Ignore - just FTR #266

arjun024 · 2016-03-19T07:49:18Z

No description provided.

split __bpf_prog_run() interpreter into stack allocation and execution parts. The code section shrinks which helps interpreter performance in some cases. text data bss dec hex filename 26350 10328 624 37302 91b6 kernel/bpf/core.o.before 25777 10328 624 36729 8f79 kernel/bpf/core.o.after Very short programs got slower (due to extra function call): Before: test_bpf: torvalds#89 ALU64_ADD_K: 1 + 2 = 3 jited:0 7 PASS test_bpf: torvalds#90 ALU64_ADD_K: 3 + 0 = 3 jited:0 8 PASS test_bpf: torvalds#91 ALU64_ADD_K: 1 + 2147483646 = 2147483647 jited:0 7 PASS test_bpf: torvalds#92 ALU64_ADD_K: 4294967294 + 2 = 4294967296 jited:0 11 PASS test_bpf: torvalds#93 ALU64_ADD_K: 2147483646 + -2147483647 = -1 jited:0 7 PASS After: test_bpf: torvalds#89 ALU64_ADD_K: 1 + 2 = 3 jited:0 11 PASS test_bpf: torvalds#90 ALU64_ADD_K: 3 + 0 = 3 jited:0 11 PASS test_bpf: torvalds#91 ALU64_ADD_K: 1 + 2147483646 = 2147483647 jited:0 11 PASS test_bpf: torvalds#92 ALU64_ADD_K: 4294967294 + 2 = 4294967296 jited:0 14 PASS test_bpf: torvalds#93 ALU64_ADD_K: 2147483646 + -2147483647 = -1 jited:0 10 PASS Longer programs got faster: Before: test_bpf: torvalds#266 BPF_MAXINSNS: Ctx heavy transformations jited:0 20286 20513 PASS test_bpf: torvalds#267 BPF_MAXINSNS: Call heavy transformations jited:0 31853 31768 PASS test_bpf: torvalds#268 BPF_MAXINSNS: Jump heavy test jited:0 9815 PASS test_bpf: torvalds#269 BPF_MAXINSNS: Very long jump backwards jited:0 6 PASS test_bpf: torvalds#270 BPF_MAXINSNS: Edge hopping nuthouse jited:0 13959 PASS test_bpf: torvalds#271 BPF_MAXINSNS: Jump, gap, jump, ... jited:0 210 PASS test_bpf: torvalds#272 BPF_MAXINSNS: ld_abs+get_processor_id jited:0 21724 PASS test_bpf: torvalds#273 BPF_MAXINSNS: ld_abs+vlan_push/pop jited:0 19118 PASS After: test_bpf: torvalds#266 BPF_MAXINSNS: Ctx heavy transformations jited:0 19008 18827 PASS test_bpf: torvalds#267 BPF_MAXINSNS: Call heavy transformations jited:0 29238 28450 PASS test_bpf: torvalds#268 BPF_MAXINSNS: Jump heavy test jited:0 9485 PASS test_bpf: torvalds#269 BPF_MAXINSNS: Very long jump backwards jited:0 12 PASS test_bpf: torvalds#270 BPF_MAXINSNS: Edge hopping nuthouse jited:0 13257 PASS test_bpf: torvalds#271 BPF_MAXINSNS: Jump, gap, jump, ... jited:0 213 PASS test_bpf: torvalds#272 BPF_MAXINSNS: ld_abs+get_processor_id jited:0 19389 PASS test_bpf: torvalds#273 BPF_MAXINSNS: ld_abs+vlan_push/pop jited:0 19583 PASS For real world production programs the difference is noise. This patch is first step towards reducing interpreter stack consumption. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>

…rnel-result rust/kernel: move from_kernel_result! macro to error.rs

WARNING: please, no spaces at the start of a line torvalds#249: FILE: mm/page-writeback.c:2089: + {$ ERROR: code indent should use tabs where possible torvalds#250: FILE: mm/page-writeback.c:2090: + .procname = "dirty_background_ratio",$ WARNING: please, no spaces at the start of a line torvalds#250: FILE: mm/page-writeback.c:2090: + .procname = "dirty_background_ratio",$ ERROR: code indent should use tabs where possible torvalds#251: FILE: mm/page-writeback.c:2091: + .data = &dirty_background_ratio,$ WARNING: please, no spaces at the start of a line torvalds#251: FILE: mm/page-writeback.c:2091: + .data = &dirty_background_ratio,$ ERROR: code indent should use tabs where possible torvalds#252: FILE: mm/page-writeback.c:2092: + .maxlen = sizeof(dirty_background_ratio),$ WARNING: please, no spaces at the start of a line torvalds#252: FILE: mm/page-writeback.c:2092: + .maxlen = sizeof(dirty_background_ratio),$ ERROR: code indent should use tabs where possible torvalds#253: FILE: mm/page-writeback.c:2093: + .mode = 0644,$ WARNING: please, no spaces at the start of a line torvalds#253: FILE: mm/page-writeback.c:2093: + .mode = 0644,$ ERROR: code indent should use tabs where possible torvalds#254: FILE: mm/page-writeback.c:2094: + .proc_handler = dirty_background_ratio_handler,$ WARNING: please, no spaces at the start of a line torvalds#254: FILE: mm/page-writeback.c:2094: + .proc_handler = dirty_background_ratio_handler,$ ERROR: code indent should use tabs where possible torvalds#255: FILE: mm/page-writeback.c:2095: + .extra1 = SYSCTL_ZERO,$ WARNING: please, no spaces at the start of a line torvalds#255: FILE: mm/page-writeback.c:2095: + .extra1 = SYSCTL_ZERO,$ ERROR: code indent should use tabs where possible torvalds#256: FILE: mm/page-writeback.c:2096: + .extra2 = SYSCTL_ONE_HUNDRED,$ WARNING: please, no spaces at the start of a line torvalds#256: FILE: mm/page-writeback.c:2096: + .extra2 = SYSCTL_ONE_HUNDRED,$ WARNING: please, no spaces at the start of a line torvalds#257: FILE: mm/page-writeback.c:2097: + },$ WARNING: please, no spaces at the start of a line torvalds#258: FILE: mm/page-writeback.c:2098: + {$ ERROR: code indent should use tabs where possible torvalds#259: FILE: mm/page-writeback.c:2099: + .procname = "dirty_background_bytes",$ WARNING: please, no spaces at the start of a line torvalds#259: FILE: mm/page-writeback.c:2099: + .procname = "dirty_background_bytes",$ ERROR: code indent should use tabs where possible torvalds#260: FILE: mm/page-writeback.c:2100: + .data = &dirty_background_bytes,$ WARNING: please, no spaces at the start of a line torvalds#260: FILE: mm/page-writeback.c:2100: + .data = &dirty_background_bytes,$ ERROR: code indent should use tabs where possible torvalds#261: FILE: mm/page-writeback.c:2101: + .maxlen = sizeof(dirty_background_bytes),$ WARNING: please, no spaces at the start of a line torvalds#261: FILE: mm/page-writeback.c:2101: + .maxlen = sizeof(dirty_background_bytes),$ ERROR: code indent should use tabs where possible torvalds#262: FILE: mm/page-writeback.c:2102: + .mode = 0644,$ WARNING: please, no spaces at the start of a line torvalds#262: FILE: mm/page-writeback.c:2102: + .mode = 0644,$ ERROR: code indent should use tabs where possible torvalds#263: FILE: mm/page-writeback.c:2103: + .proc_handler = dirty_background_bytes_handler,$ WARNING: please, no spaces at the start of a line torvalds#263: FILE: mm/page-writeback.c:2103: + .proc_handler = dirty_background_bytes_handler,$ ERROR: code indent should use tabs where possible torvalds#264: FILE: mm/page-writeback.c:2104: + .extra1 = SYSCTL_LONG_ONE,$ WARNING: please, no spaces at the start of a line torvalds#264: FILE: mm/page-writeback.c:2104: + .extra1 = SYSCTL_LONG_ONE,$ WARNING: please, no spaces at the start of a line torvalds#265: FILE: mm/page-writeback.c:2105: + },$ WARNING: please, no spaces at the start of a line torvalds#266: FILE: mm/page-writeback.c:2106: + {$ ERROR: code indent should use tabs where possible torvalds#267: FILE: mm/page-writeback.c:2107: + .procname = "dirty_ratio",$ WARNING: please, no spaces at the start of a line torvalds#267: FILE: mm/page-writeback.c:2107: + .procname = "dirty_ratio",$ ERROR: code indent should use tabs where possible torvalds#268: FILE: mm/page-writeback.c:2108: + .data = &vm_dirty_ratio,$ WARNING: please, no spaces at the start of a line torvalds#268: FILE: mm/page-writeback.c:2108: + .data = &vm_dirty_ratio,$ ERROR: code indent should use tabs where possible torvalds#269: FILE: mm/page-writeback.c:2109: + .maxlen = sizeof(vm_dirty_ratio),$ WARNING: please, no spaces at the start of a line torvalds#269: FILE: mm/page-writeback.c:2109: + .maxlen = sizeof(vm_dirty_ratio),$ ERROR: code indent should use tabs where possible torvalds#270: FILE: mm/page-writeback.c:2110: + .mode = 0644,$ WARNING: please, no spaces at the start of a line torvalds#270: FILE: mm/page-writeback.c:2110: + .mode = 0644,$ ERROR: code indent should use tabs where possible torvalds#271: FILE: mm/page-writeback.c:2111: + .proc_handler = dirty_ratio_handler,$ WARNING: please, no spaces at the start of a line torvalds#271: FILE: mm/page-writeback.c:2111: + .proc_handler = dirty_ratio_handler,$ ERROR: code indent should use tabs where possible torvalds#272: FILE: mm/page-writeback.c:2112: + .extra1 = SYSCTL_ZERO,$ WARNING: please, no spaces at the start of a line torvalds#272: FILE: mm/page-writeback.c:2112: + .extra1 = SYSCTL_ZERO,$ ERROR: code indent should use tabs where possible torvalds#273: FILE: mm/page-writeback.c:2113: + .extra2 = SYSCTL_ONE_HUNDRED,$ WARNING: please, no spaces at the start of a line torvalds#273: FILE: mm/page-writeback.c:2113: + .extra2 = SYSCTL_ONE_HUNDRED,$ WARNING: please, no spaces at the start of a line torvalds#274: FILE: mm/page-writeback.c:2114: + },$ WARNING: please, no spaces at the start of a line torvalds#275: FILE: mm/page-writeback.c:2115: + {$ ERROR: code indent should use tabs where possible torvalds#276: FILE: mm/page-writeback.c:2116: + .procname = "dirty_bytes",$ WARNING: please, no spaces at the start of a line torvalds#276: FILE: mm/page-writeback.c:2116: + .procname = "dirty_bytes",$ ERROR: code indent should use tabs where possible torvalds#277: FILE: mm/page-writeback.c:2117: + .data = &vm_dirty_bytes,$ WARNING: please, no spaces at the start of a line torvalds#277: FILE: mm/page-writeback.c:2117: + .data = &vm_dirty_bytes,$ ERROR: code indent should use tabs where possible torvalds#278: FILE: mm/page-writeback.c:2118: + .maxlen = sizeof(vm_dirty_bytes),$ WARNING: please, no spaces at the start of a line torvalds#278: FILE: mm/page-writeback.c:2118: + .maxlen = sizeof(vm_dirty_bytes),$ ERROR: code indent should use tabs where possible torvalds#279: FILE: mm/page-writeback.c:2119: + .mode = 0644,$ WARNING: please, no spaces at the start of a line torvalds#279: FILE: mm/page-writeback.c:2119: + .mode = 0644,$ ERROR: code indent should use tabs where possible torvalds#280: FILE: mm/page-writeback.c:2120: + .proc_handler = dirty_bytes_handler,$ WARNING: please, no spaces at the start of a line torvalds#280: FILE: mm/page-writeback.c:2120: + .proc_handler = dirty_bytes_handler,$ ERROR: code indent should use tabs where possible torvalds#281: FILE: mm/page-writeback.c:2121: + .extra1 = (void *)&dirty_bytes_min,$ WARNING: please, no spaces at the start of a line torvalds#281: FILE: mm/page-writeback.c:2121: + .extra1 = (void *)&dirty_bytes_min,$ WARNING: please, no spaces at the start of a line torvalds#282: FILE: mm/page-writeback.c:2122: + },$ WARNING: please, no spaces at the start of a line torvalds#283: FILE: mm/page-writeback.c:2123: + {$ ERROR: code indent should use tabs where possible torvalds#284: FILE: mm/page-writeback.c:2124: + .procname = "dirty_writeback_centisecs",$ WARNING: please, no spaces at the start of a line torvalds#284: FILE: mm/page-writeback.c:2124: + .procname = "dirty_writeback_centisecs",$ ERROR: code indent should use tabs where possible torvalds#285: FILE: mm/page-writeback.c:2125: + .data = &dirty_writeback_interval,$ WARNING: please, no spaces at the start of a line torvalds#285: FILE: mm/page-writeback.c:2125: + .data = &dirty_writeback_interval,$ ERROR: code indent should use tabs where possible torvalds#286: FILE: mm/page-writeback.c:2126: + .maxlen = sizeof(dirty_writeback_interval),$ WARNING: please, no spaces at the start of a line torvalds#286: FILE: mm/page-writeback.c:2126: + .maxlen = sizeof(dirty_writeback_interval),$ ERROR: code indent should use tabs where possible torvalds#287: FILE: mm/page-writeback.c:2127: + .mode = 0644,$ WARNING: please, no spaces at the start of a line torvalds#287: FILE: mm/page-writeback.c:2127: + .mode = 0644,$ ERROR: code indent should use tabs where possible torvalds#288: FILE: mm/page-writeback.c:2128: + .proc_handler = dirty_writeback_centisecs_handler,$ WARNING: please, no spaces at the start of a line torvalds#288: FILE: mm/page-writeback.c:2128: + .proc_handler = dirty_writeback_centisecs_handler,$ WARNING: please, no spaces at the start of a line torvalds#289: FILE: mm/page-writeback.c:2129: + },$ WARNING: please, no spaces at the start of a line torvalds#290: FILE: mm/page-writeback.c:2130: + {$ ERROR: code indent should use tabs where possible torvalds#291: FILE: mm/page-writeback.c:2131: + .procname = "dirty_expire_centisecs",$ WARNING: please, no spaces at the start of a line torvalds#291: FILE: mm/page-writeback.c:2131: + .procname = "dirty_expire_centisecs",$ ERROR: code indent should use tabs where possible torvalds#292: FILE: mm/page-writeback.c:2132: + .data = &dirty_expire_interval,$ WARNING: please, no spaces at the start of a line torvalds#292: FILE: mm/page-writeback.c:2132: + .data = &dirty_expire_interval,$ ERROR: code indent should use tabs where possible torvalds#293: FILE: mm/page-writeback.c:2133: + .maxlen = sizeof(dirty_expire_interval),$ WARNING: please, no spaces at the start of a line torvalds#293: FILE: mm/page-writeback.c:2133: + .maxlen = sizeof(dirty_expire_interval),$ ERROR: code indent should use tabs where possible torvalds#294: FILE: mm/page-writeback.c:2134: + .mode = 0644,$ WARNING: please, no spaces at the start of a line torvalds#294: FILE: mm/page-writeback.c:2134: + .mode = 0644,$ ERROR: code indent should use tabs where possible torvalds#295: FILE: mm/page-writeback.c:2135: + .proc_handler = proc_dointvec_minmax,$ WARNING: please, no spaces at the start of a line torvalds#295: FILE: mm/page-writeback.c:2135: + .proc_handler = proc_dointvec_minmax,$ ERROR: code indent should use tabs where possible torvalds#296: FILE: mm/page-writeback.c:2136: + .extra1 = SYSCTL_ZERO,$ WARNING: please, no spaces at the start of a line torvalds#296: FILE: mm/page-writeback.c:2136: + .extra1 = SYSCTL_ZERO,$ WARNING: please, no spaces at the start of a line torvalds#297: FILE: mm/page-writeback.c:2137: + },$ total: 37 errors, 49 warnings, 287 lines checked NOTE: For some of the reported defects, checkpatch may be able to mechanically convert to the typical style using --fix or --fix-inplace. NOTE: Whitespace errors detected. You may wish to use scripts/cleanpatch or scripts/cleanfile ./patches/mm-move-page-writeback-sysctls-to-is-own-file.patch has style problems, please review. NOTE: If any of the errors are false positives, please report them to the maintainer, see CHECKPATCH in MAINTAINERS. Please run checkpatch prior to sending patches Cc: Iurii Zaikin <yzaikin@google.com> Cc: Kees Cook <keescook@chromium.org> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: zhanglianjie <zhanglianjie@uniontech.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

WARNING: please, no spaces at the start of a line torvalds#249: FILE: mm/page-writeback.c:2089: + {$ ERROR: code indent should use tabs where possible torvalds#250: FILE: mm/page-writeback.c:2090: + .procname = "dirty_background_ratio",$ WARNING: please, no spaces at the start of a line torvalds#250: FILE: mm/page-writeback.c:2090: + .procname = "dirty_background_ratio",$ ERROR: code indent should use tabs where possible torvalds#251: FILE: mm/page-writeback.c:2091: + .data = &dirty_background_ratio,$ WARNING: please, no spaces at the start of a line torvalds#251: FILE: mm/page-writeback.c:2091: + .data = &dirty_background_ratio,$ ERROR: code indent should use tabs where possible torvalds#252: FILE: mm/page-writeback.c:2092: + .maxlen = sizeof(dirty_background_ratio),$ WARNING: please, no spaces at the start of a line torvalds#252: FILE: mm/page-writeback.c:2092: + .maxlen = sizeof(dirty_background_ratio),$ ERROR: code indent should use tabs where possible torvalds#253: FILE: mm/page-writeback.c:2093: + .mode = 0644,$ WARNING: please, no spaces at the start of a line torvalds#253: FILE: mm/page-writeback.c:2093: + .mode = 0644,$ ERROR: code indent should use tabs where possible torvalds#254: FILE: mm/page-writeback.c:2094: + .proc_handler = dirty_background_ratio_handler,$ WARNING: please, no spaces at the start of a line torvalds#254: FILE: mm/page-writeback.c:2094: + .proc_handler = dirty_background_ratio_handler,$ ERROR: code indent should use tabs where possible torvalds#255: FILE: mm/page-writeback.c:2095: + .extra1 = SYSCTL_ZERO,$ WARNING: please, no spaces at the start of a line torvalds#255: FILE: mm/page-writeback.c:2095: + .extra1 = SYSCTL_ZERO,$ ERROR: code indent should use tabs where possible torvalds#256: FILE: mm/page-writeback.c:2096: + .extra2 = SYSCTL_ONE_HUNDRED,$ WARNING: please, no spaces at the start of a line torvalds#256: FILE: mm/page-writeback.c:2096: + .extra2 = SYSCTL_ONE_HUNDRED,$ WARNING: please, no spaces at the start of a line torvalds#257: FILE: mm/page-writeback.c:2097: + },$ WARNING: please, no spaces at the start of a line torvalds#258: FILE: mm/page-writeback.c:2098: + {$ ERROR: code indent should use tabs where possible torvalds#259: FILE: mm/page-writeback.c:2099: + .procname = "dirty_background_bytes",$ WARNING: please, no spaces at the start of a line torvalds#259: FILE: mm/page-writeback.c:2099: + .procname = "dirty_background_bytes",$ ERROR: code indent should use tabs where possible torvalds#260: FILE: mm/page-writeback.c:2100: + .data = &dirty_background_bytes,$ WARNING: please, no spaces at the start of a line torvalds#260: FILE: mm/page-writeback.c:2100: + .data = &dirty_background_bytes,$ ERROR: code indent should use tabs where possible torvalds#261: FILE: mm/page-writeback.c:2101: + .maxlen = sizeof(dirty_background_bytes),$ WARNING: please, no spaces at the start of a line torvalds#261: FILE: mm/page-writeback.c:2101: + .maxlen = sizeof(dirty_background_bytes),$ ERROR: code indent should use tabs where possible torvalds#262: FILE: mm/page-writeback.c:2102: + .mode = 0644,$ WARNING: please, no spaces at the start of a line torvalds#262: FILE: mm/page-writeback.c:2102: + .mode = 0644,$ ERROR: code indent should use tabs where possible torvalds#263: FILE: mm/page-writeback.c:2103: + .proc_handler = dirty_background_bytes_handler,$ WARNING: please, no spaces at the start of a line torvalds#263: FILE: mm/page-writeback.c:2103: + .proc_handler = dirty_background_bytes_handler,$ ERROR: code indent should use tabs where possible torvalds#264: FILE: mm/page-writeback.c:2104: + .extra1 = SYSCTL_LONG_ONE,$ WARNING: please, no spaces at the start of a line torvalds#264: FILE: mm/page-writeback.c:2104: + .extra1 = SYSCTL_LONG_ONE,$ WARNING: please, no spaces at the start of a line torvalds#265: FILE: mm/page-writeback.c:2105: + },$ WARNING: please, no spaces at the start of a line torvalds#266: FILE: mm/page-writeback.c:2106: + {$ ERROR: code indent should use tabs where possible torvalds#267: FILE: mm/page-writeback.c:2107: + .procname = "dirty_ratio",$ WARNING: please, no spaces at the start of a line torvalds#267: FILE: mm/page-writeback.c:2107: + .procname = "dirty_ratio",$ ERROR: code indent should use tabs where possible torvalds#268: FILE: mm/page-writeback.c:2108: + .data = &vm_dirty_ratio,$ WARNING: please, no spaces at the start of a line torvalds#268: FILE: mm/page-writeback.c:2108: + .data = &vm_dirty_ratio,$ ERROR: code indent should use tabs where possible torvalds#269: FILE: mm/page-writeback.c:2109: + .maxlen = sizeof(vm_dirty_ratio),$ WARNING: please, no spaces at the start of a line torvalds#269: FILE: mm/page-writeback.c:2109: + .maxlen = sizeof(vm_dirty_ratio),$ ERROR: code indent should use tabs where possible torvalds#270: FILE: mm/page-writeback.c:2110: + .mode = 0644,$ WARNING: please, no spaces at the start of a line torvalds#270: FILE: mm/page-writeback.c:2110: + .mode = 0644,$ ERROR: code indent should use tabs where possible torvalds#271: FILE: mm/page-writeback.c:2111: + .proc_handler = dirty_ratio_handler,$ WARNING: please, no spaces at the start of a line torvalds#271: FILE: mm/page-writeback.c:2111: + .proc_handler = dirty_ratio_handler,$ ERROR: code indent should use tabs where possible torvalds#272: FILE: mm/page-writeback.c:2112: + .extra1 = SYSCTL_ZERO,$ WARNING: please, no spaces at the start of a line torvalds#272: FILE: mm/page-writeback.c:2112: + .extra1 = SYSCTL_ZERO,$ ERROR: code indent should use tabs where possible torvalds#273: FILE: mm/page-writeback.c:2113: + .extra2 = SYSCTL_ONE_HUNDRED,$ WARNING: please, no spaces at the start of a line torvalds#273: FILE: mm/page-writeback.c:2113: + .extra2 = SYSCTL_ONE_HUNDRED,$ WARNING: please, no spaces at the start of a line torvalds#274: FILE: mm/page-writeback.c:2114: + },$ WARNING: please, no spaces at the start of a line torvalds#275: FILE: mm/page-writeback.c:2115: + {$ ERROR: code indent should use tabs where possible torvalds#276: FILE: mm/page-writeback.c:2116: + .procname = "dirty_bytes",$ WARNING: please, no spaces at the start of a line torvalds#276: FILE: mm/page-writeback.c:2116: + .procname = "dirty_bytes",$ ERROR: code indent should use tabs where possible torvalds#277: FILE: mm/page-writeback.c:2117: + .data = &vm_dirty_bytes,$ WARNING: please, no spaces at the start of a line torvalds#277: FILE: mm/page-writeback.c:2117: + .data = &vm_dirty_bytes,$ ERROR: code indent should use tabs where possible torvalds#278: FILE: mm/page-writeback.c:2118: + .maxlen = sizeof(vm_dirty_bytes),$ WARNING: please, no spaces at the start of a line torvalds#278: FILE: mm/page-writeback.c:2118: + .maxlen = sizeof(vm_dirty_bytes),$ ERROR: code indent should use tabs where possible torvalds#279: FILE: mm/page-writeback.c:2119: + .mode = 0644,$ WARNING: please, no spaces at the start of a line torvalds#279: FILE: mm/page-writeback.c:2119: + .mode = 0644,$ ERROR: code indent should use tabs where possible torvalds#280: FILE: mm/page-writeback.c:2120: + .proc_handler = dirty_bytes_handler,$ WARNING: please, no spaces at the start of a line torvalds#280: FILE: mm/page-writeback.c:2120: + .proc_handler = dirty_bytes_handler,$ ERROR: code indent should use tabs where possible torvalds#281: FILE: mm/page-writeback.c:2121: + .extra1 = (void *)&dirty_bytes_min,$ WARNING: please, no spaces at the start of a line torvalds#281: FILE: mm/page-writeback.c:2121: + .extra1 = (void *)&dirty_bytes_min,$ WARNING: please, no spaces at the start of a line torvalds#282: FILE: mm/page-writeback.c:2122: + },$ WARNING: please, no spaces at the start of a line torvalds#283: FILE: mm/page-writeback.c:2123: + {$ ERROR: code indent should use tabs where possible torvalds#284: FILE: mm/page-writeback.c:2124: + .procname = "dirty_writeback_centisecs",$ WARNING: please, no spaces at the start of a line torvalds#284: FILE: mm/page-writeback.c:2124: + .procname = "dirty_writeback_centisecs",$ ERROR: code indent should use tabs where possible torvalds#285: FILE: mm/page-writeback.c:2125: + .data = &dirty_writeback_interval,$ WARNING: please, no spaces at the start of a line torvalds#285: FILE: mm/page-writeback.c:2125: + .data = &dirty_writeback_interval,$ ERROR: code indent should use tabs where possible torvalds#286: FILE: mm/page-writeback.c:2126: + .maxlen = sizeof(dirty_writeback_interval),$ WARNING: please, no spaces at the start of a line torvalds#286: FILE: mm/page-writeback.c:2126: + .maxlen = sizeof(dirty_writeback_interval),$ ERROR: code indent should use tabs where possible torvalds#287: FILE: mm/page-writeback.c:2127: + .mode = 0644,$ WARNING: please, no spaces at the start of a line torvalds#287: FILE: mm/page-writeback.c:2127: + .mode = 0644,$ ERROR: code indent should use tabs where possible torvalds#288: FILE: mm/page-writeback.c:2128: + .proc_handler = dirty_writeback_centisecs_handler,$ WARNING: please, no spaces at the start of a line torvalds#288: FILE: mm/page-writeback.c:2128: + .proc_handler = dirty_writeback_centisecs_handler,$ WARNING: please, no spaces at the start of a line torvalds#289: FILE: mm/page-writeback.c:2129: + },$ WARNING: please, no spaces at the start of a line torvalds#290: FILE: mm/page-writeback.c:2130: + {$ ERROR: code indent should use tabs where possible torvalds#291: FILE: mm/page-writeback.c:2131: + .procname = "dirty_expire_centisecs",$ WARNING: please, no spaces at the start of a line torvalds#291: FILE: mm/page-writeback.c:2131: + .procname = "dirty_expire_centisecs",$ ERROR: code indent should use tabs where possible torvalds#292: FILE: mm/page-writeback.c:2132: + .data = &dirty_expire_interval,$ WARNING: please, no spaces at the start of a line torvalds#292: FILE: mm/page-writeback.c:2132: + .data = &dirty_expire_interval,$ ERROR: code indent should use tabs where possible torvalds#293: FILE: mm/page-writeback.c:2133: + .maxlen = sizeof(dirty_expire_interval),$ WARNING: please, no spaces at the start of a line torvalds#293: FILE: mm/page-writeback.c:2133: + .maxlen = sizeof(dirty_expire_interval),$ ERROR: code indent should use tabs where possible torvalds#294: FILE: mm/page-writeback.c:2134: + .mode = 0644,$ WARNING: please, no spaces at the start of a line torvalds#294: FILE: mm/page-writeback.c:2134: + .mode = 0644,$ ERROR: code indent should use tabs where possible torvalds#295: FILE: mm/page-writeback.c:2135: + .proc_handler = proc_dointvec_minmax,$ WARNING: please, no spaces at the start of a line torvalds#295: FILE: mm/page-writeback.c:2135: + .proc_handler = proc_dointvec_minmax,$ ERROR: code indent should use tabs where possible torvalds#296: FILE: mm/page-writeback.c:2136: + .extra1 = SYSCTL_ZERO,$ WARNING: please, no spaces at the start of a line torvalds#296: FILE: mm/page-writeback.c:2136: + .extra1 = SYSCTL_ZERO,$ WARNING: please, no spaces at the start of a line torvalds#297: FILE: mm/page-writeback.c:2137: + },$ total: 37 errors, 49 warnings, 287 lines checked NOTE: For some of the reported defects, checkpatch may be able to mechanically convert to the typical style using --fix or --fix-inplace. NOTE: Whitespace errors detected. You may wish to use scripts/cleanpatch or scripts/cleanfile ./patches/mm-move-page-writeback-sysctls-to-is-own-file.patch has style problems, please review. NOTE: If any of the errors are false positives, please report them to the maintainer, see CHECKPATCH in MAINTAINERS. Please run checkpatch prior to sending patches Cc: Iurii Zaikin <yzaikin@google.com> Cc: Kees Cook <keescook@chromium.org> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: zhanglianjie <zhanglianjie@uniontech.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Mark Brown <broonie@kernel.org>

There is issue as follows when test f2fs atomic write: F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock F2FS-fs (loop0): invalid crc_offset: 0 F2FS-fs (loop0): f2fs_check_nid_range: out-of-range nid=1, run fsck to fix. F2FS-fs (loop0): f2fs_check_nid_range: out-of-range nid=2, run fsck to fix. ================================================================== BUG: KASAN: null-ptr-deref in f2fs_get_dnode_of_data+0xac/0x16d0 Read of size 8 at addr 0000000000000028 by task rep/1990 CPU: 4 PID: 1990 Comm: rep Not tainted 5.19.0-rc6-next-20220715 torvalds#266 Call Trace: <TASK> dump_stack_lvl+0x6e/0x91 print_report.cold+0x49a/0x6bb kasan_report+0xa8/0x130 f2fs_get_dnode_of_data+0xac/0x16d0 f2fs_do_write_data_page+0x2a5/0x1030 move_data_page+0x3c5/0xdf0 do_garbage_collect+0x2015/0x36c0 f2fs_gc+0x554/0x1d30 f2fs_balance_fs+0x7f5/0xda0 f2fs_write_single_data_page+0xb66/0xdc0 f2fs_write_cache_pages+0x716/0x1420 f2fs_write_data_pages+0x84f/0x9a0 do_writepages+0x130/0x3a0 filemap_fdatawrite_wbc+0x87/0xa0 file_write_and_wait_range+0x157/0x1c0 f2fs_do_sync_file+0x206/0x12d0 f2fs_sync_file+0x99/0xc0 vfs_fsync_range+0x75/0x140 f2fs_file_write_iter+0xd7b/0x1850 vfs_write+0x645/0x780 ksys_write+0xf1/0x1e0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd As 3db1de0 commit changed atomic write way which new a cow_inode for atomic write file, and also mark cow_inode as FI_ATOMIC_FILE. When f2fs_do_write_data_page write cow_inode will use cow_inode's cow_inode which is NULL. Then will trigger null-ptr-deref. To solve above issue, don't mark cow_inode as FI_ATOMIC_FILE. Fiexes: 3db1de0("f2fs: change the current atomic write way") Signed-off-by: Ye Bin <yebin10@huawei.com>

There is issue as follows when test f2fs atomic write: F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock F2FS-fs (loop0): invalid crc_offset: 0 F2FS-fs (loop0): f2fs_check_nid_range: out-of-range nid=1, run fsck to fix. F2FS-fs (loop0): f2fs_check_nid_range: out-of-range nid=2, run fsck to fix. ================================================================== BUG: KASAN: null-ptr-deref in f2fs_get_dnode_of_data+0xac/0x16d0 Read of size 8 at addr 0000000000000028 by task rep/1990 CPU: 4 PID: 1990 Comm: rep Not tainted 5.19.0-rc6-next-20220715 torvalds#266 Call Trace: <TASK> dump_stack_lvl+0x6e/0x91 print_report.cold+0x49a/0x6bb kasan_report+0xa8/0x130 f2fs_get_dnode_of_data+0xac/0x16d0 f2fs_do_write_data_page+0x2a5/0x1030 move_data_page+0x3c5/0xdf0 do_garbage_collect+0x2015/0x36c0 f2fs_gc+0x554/0x1d30 f2fs_balance_fs+0x7f5/0xda0 f2fs_write_single_data_page+0xb66/0xdc0 f2fs_write_cache_pages+0x716/0x1420 f2fs_write_data_pages+0x84f/0x9a0 do_writepages+0x130/0x3a0 filemap_fdatawrite_wbc+0x87/0xa0 file_write_and_wait_range+0x157/0x1c0 f2fs_do_sync_file+0x206/0x12d0 f2fs_sync_file+0x99/0xc0 vfs_fsync_range+0x75/0x140 f2fs_file_write_iter+0xd7b/0x1850 vfs_write+0x645/0x780 ksys_write+0xf1/0x1e0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd As 3db1de0 commit changed atomic write way which new a cow_inode for atomic write file, and also mark cow_inode as FI_ATOMIC_FILE. When f2fs_do_write_data_page write cow_inode will use cow_inode's cow_inode which is NULL. Then will trigger null-ptr-deref. To solve above issue, introduce FI_COW_FILE flag for COW inode. Fiexes: 3db1de0("f2fs: change the current atomic write way") Signed-off-by: Ye Bin <yebin10@huawei.com>

There is issue as follows when test f2fs atomic write: F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock F2FS-fs (loop0): invalid crc_offset: 0 F2FS-fs (loop0): f2fs_check_nid_range: out-of-range nid=1, run fsck to fix. F2FS-fs (loop0): f2fs_check_nid_range: out-of-range nid=2, run fsck to fix. ================================================================== BUG: KASAN: null-ptr-deref in f2fs_get_dnode_of_data+0xac/0x16d0 Read of size 8 at addr 0000000000000028 by task rep/1990 CPU: 4 PID: 1990 Comm: rep Not tainted 5.19.0-rc6-next-20220715 torvalds#266 Call Trace: <TASK> dump_stack_lvl+0x6e/0x91 print_report.cold+0x49a/0x6bb kasan_report+0xa8/0x130 f2fs_get_dnode_of_data+0xac/0x16d0 f2fs_do_write_data_page+0x2a5/0x1030 move_data_page+0x3c5/0xdf0 do_garbage_collect+0x2015/0x36c0 f2fs_gc+0x554/0x1d30 f2fs_balance_fs+0x7f5/0xda0 f2fs_write_single_data_page+0xb66/0xdc0 f2fs_write_cache_pages+0x716/0x1420 f2fs_write_data_pages+0x84f/0x9a0 do_writepages+0x130/0x3a0 filemap_fdatawrite_wbc+0x87/0xa0 file_write_and_wait_range+0x157/0x1c0 f2fs_do_sync_file+0x206/0x12d0 f2fs_sync_file+0x99/0xc0 vfs_fsync_range+0x75/0x140 f2fs_file_write_iter+0xd7b/0x1850 vfs_write+0x645/0x780 ksys_write+0xf1/0x1e0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd As 3db1de0 commit changed atomic write way which new a cow_inode for atomic write file, and also mark cow_inode as FI_ATOMIC_FILE. When f2fs_do_write_data_page write cow_inode will use cow_inode's cow_inode which is NULL. Then will trigger null-ptr-deref. To solve above issue, don't mark cow_inode as FI_ATOMIC_FILE. Fiexes: 3db1de0("f2fs: change the current atomic write way") Signed-off-by: Ye Bin <yebin10@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

There is issue as follows when test f2fs atomic write: F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock F2FS-fs (loop0): invalid crc_offset: 0 F2FS-fs (loop0): f2fs_check_nid_range: out-of-range nid=1, run fsck to fix. F2FS-fs (loop0): f2fs_check_nid_range: out-of-range nid=2, run fsck to fix. ================================================================== BUG: KASAN: null-ptr-deref in f2fs_get_dnode_of_data+0xac/0x16d0 Read of size 8 at addr 0000000000000028 by task rep/1990 CPU: 4 PID: 1990 Comm: rep Not tainted 5.19.0-rc6-next-20220715 torvalds#266 Call Trace: <TASK> dump_stack_lvl+0x6e/0x91 print_report.cold+0x49a/0x6bb kasan_report+0xa8/0x130 f2fs_get_dnode_of_data+0xac/0x16d0 f2fs_do_write_data_page+0x2a5/0x1030 move_data_page+0x3c5/0xdf0 do_garbage_collect+0x2015/0x36c0 f2fs_gc+0x554/0x1d30 f2fs_balance_fs+0x7f5/0xda0 f2fs_write_single_data_page+0xb66/0xdc0 f2fs_write_cache_pages+0x716/0x1420 f2fs_write_data_pages+0x84f/0x9a0 do_writepages+0x130/0x3a0 filemap_fdatawrite_wbc+0x87/0xa0 file_write_and_wait_range+0x157/0x1c0 f2fs_do_sync_file+0x206/0x12d0 f2fs_sync_file+0x99/0xc0 vfs_fsync_range+0x75/0x140 f2fs_file_write_iter+0xd7b/0x1850 vfs_write+0x645/0x780 ksys_write+0xf1/0x1e0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd As 3db1de0 commit changed atomic write way which new a cow_inode for atomic write file, and also mark cow_inode as FI_ATOMIC_FILE. When f2fs_do_write_data_page write cow_inode will use cow_inode's cow_inode which is NULL. Then will trigger null-ptr-deref. To solve above issue, introduce FI_COW_FILE flag for COW inode. Fiexes: 3db1de0("f2fs: change the current atomic write way") Signed-off-by: Ye Bin <yebin10@huawei.com> Reviewed-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

commit 4a2c5b7 upstream. There is issue as follows when test f2fs atomic write: F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock F2FS-fs (loop0): invalid crc_offset: 0 F2FS-fs (loop0): f2fs_check_nid_range: out-of-range nid=1, run fsck to fix. F2FS-fs (loop0): f2fs_check_nid_range: out-of-range nid=2, run fsck to fix. ================================================================== BUG: KASAN: null-ptr-deref in f2fs_get_dnode_of_data+0xac/0x16d0 Read of size 8 at addr 0000000000000028 by task rep/1990 CPU: 4 PID: 1990 Comm: rep Not tainted 5.19.0-rc6-next-20220715 torvalds#266 Call Trace: <TASK> dump_stack_lvl+0x6e/0x91 print_report.cold+0x49a/0x6bb kasan_report+0xa8/0x130 f2fs_get_dnode_of_data+0xac/0x16d0 f2fs_do_write_data_page+0x2a5/0x1030 move_data_page+0x3c5/0xdf0 do_garbage_collect+0x2015/0x36c0 f2fs_gc+0x554/0x1d30 f2fs_balance_fs+0x7f5/0xda0 f2fs_write_single_data_page+0xb66/0xdc0 f2fs_write_cache_pages+0x716/0x1420 f2fs_write_data_pages+0x84f/0x9a0 do_writepages+0x130/0x3a0 filemap_fdatawrite_wbc+0x87/0xa0 file_write_and_wait_range+0x157/0x1c0 f2fs_do_sync_file+0x206/0x12d0 f2fs_sync_file+0x99/0xc0 vfs_fsync_range+0x75/0x140 f2fs_file_write_iter+0xd7b/0x1850 vfs_write+0x645/0x780 ksys_write+0xf1/0x1e0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd As 3db1de0 commit changed atomic write way which new a cow_inode for atomic write file, and also mark cow_inode as FI_ATOMIC_FILE. When f2fs_do_write_data_page write cow_inode will use cow_inode's cow_inode which is NULL. Then will trigger null-ptr-deref. To solve above issue, introduce FI_COW_FILE flag for COW inode. Fiexes: 3db1de0("f2fs: change the current atomic write way") Signed-off-by: Ye Bin <yebin10@huawei.com> Reviewed-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

./test_progs -t tc_opts [ 1.406778] tsc: Refined TSC clocksource calibration: 3407.990 MHz [ 1.408863] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x311fcaf6eb0, max_idle_ns: 440795321766 ns [ 1.412419] clocksource: Switched to clocksource tsc [ 1.428671] bpf_testmod: loading out-of-tree module taints kernel. [ 1.430260] bpf_testmod: module verification failed: signature and/or required key missing - tainting kernel torvalds#252 tc_opts_after:OK torvalds#253 tc_opts_append:OK torvalds#254 tc_opts_basic:OK torvalds#255 tc_opts_before:OK torvalds#256 tc_opts_chain_classic:OK torvalds#257 tc_opts_chain_mixed:OK torvalds#258 tc_opts_delete_empty:OK torvalds#259 tc_opts_demixed:OK torvalds#260 tc_opts_detach:OK torvalds#261 tc_opts_detach_after:OK torvalds#262 tc_opts_detach_before:OK torvalds#263 tc_opts_dev_cleanup:OK torvalds#264 tc_opts_invalid:OK torvalds#265 tc_opts_max:OK torvalds#266 tc_opts_mixed:OK torvalds#267 tc_opts_prepend:OK torvalds#268 tc_opts_query:OK torvalds#269 tc_opts_query_attach:OK <--- (new test) torvalds#270 tc_opts_replace:OK torvalds#271 tc_opts_revision:OK Summary: 20/0 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

Add a new test case to query on an empty bpf_mprog and pass the revision directly into exprected_revision for attachment to assert that this does succeed. ./test_progs -t tc_opts [ 1.406778] tsc: Refined TSC clocksource calibration: 3407.990 MHz [ 1.408863] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x311fcaf6eb0, max_idle_ns: 440795321766 ns [ 1.412419] clocksource: Switched to clocksource tsc [ 1.428671] bpf_testmod: loading out-of-tree module taints kernel. [ 1.430260] bpf_testmod: module verification failed: signature and/or required key missing - tainting kernel torvalds#252 tc_opts_after:OK torvalds#253 tc_opts_append:OK torvalds#254 tc_opts_basic:OK torvalds#255 tc_opts_before:OK torvalds#256 tc_opts_chain_classic:OK torvalds#257 tc_opts_chain_mixed:OK torvalds#258 tc_opts_delete_empty:OK torvalds#259 tc_opts_demixed:OK torvalds#260 tc_opts_detach:OK torvalds#261 tc_opts_detach_after:OK torvalds#262 tc_opts_detach_before:OK torvalds#263 tc_opts_dev_cleanup:OK torvalds#264 tc_opts_invalid:OK torvalds#265 tc_opts_max:OK torvalds#266 tc_opts_mixed:OK torvalds#267 tc_opts_prepend:OK torvalds#268 tc_opts_query:OK torvalds#269 tc_opts_query_attach:OK <--- (new test) torvalds#270 tc_opts_replace:OK torvalds#271 tc_opts_revision:OK Summary: 20/0 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

Add a new test case which performs double query of the bpf_mprog through libbpf API, but also via raw bpf(2) syscall. This is testing to gather first the count and then in a subsequent probe the full information with the program array without clearing passed structs in between. # ./vmtest.sh -- ./test_progs -t tc_opts [...] ./test_progs -t tc_opts [ 1.398818] tsc: Refined TSC clocksource calibration: 3407.999 MHz [ 1.400263] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x311fd336761, max_idle_ns: 440795243819 ns [ 1.402734] clocksource: Switched to clocksource tsc [ 1.426639] bpf_testmod: loading out-of-tree module taints kernel. [ 1.428112] bpf_testmod: module verification failed: signature and/or required key missing - tainting kernel torvalds#252 tc_opts_after:OK torvalds#253 tc_opts_append:OK torvalds#254 tc_opts_basic:OK torvalds#255 tc_opts_before:OK torvalds#256 tc_opts_chain_classic:OK torvalds#257 tc_opts_chain_mixed:OK torvalds#258 tc_opts_delete_empty:OK torvalds#259 tc_opts_demixed:OK torvalds#260 tc_opts_detach:OK torvalds#261 tc_opts_detach_after:OK torvalds#262 tc_opts_detach_before:OK torvalds#263 tc_opts_dev_cleanup:OK torvalds#264 tc_opts_invalid:OK torvalds#265 tc_opts_max:OK torvalds#266 tc_opts_mixed:OK torvalds#267 tc_opts_prepend:OK torvalds#268 tc_opts_query:OK <--- (new test) torvalds#269 tc_opts_replace:OK torvalds#270 tc_opts_revision:OK Summary: 19/0 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

Add a new test case to query on an empty bpf_mprog and pass the revision directly into exprected_revision for attachment to assert that this does succeed. ./test_progs -t tc_opts [ 1.406778] tsc: Refined TSC clocksource calibration: 3407.990 MHz [ 1.408863] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x311fcaf6eb0, max_idle_ns: 440795321766 ns [ 1.412419] clocksource: Switched to clocksource tsc [ 1.428671] bpf_testmod: loading out-of-tree module taints kernel. [ 1.430260] bpf_testmod: module verification failed: signature and/or required key missing - tainting kernel torvalds#252 tc_opts_after:OK torvalds#253 tc_opts_append:OK torvalds#254 tc_opts_basic:OK torvalds#255 tc_opts_before:OK torvalds#256 tc_opts_chain_classic:OK torvalds#257 tc_opts_chain_mixed:OK torvalds#258 tc_opts_delete_empty:OK torvalds#259 tc_opts_demixed:OK torvalds#260 tc_opts_detach:OK torvalds#261 tc_opts_detach_after:OK torvalds#262 tc_opts_detach_before:OK torvalds#263 tc_opts_dev_cleanup:OK torvalds#264 tc_opts_invalid:OK torvalds#265 tc_opts_max:OK torvalds#266 tc_opts_mixed:OK torvalds#267 tc_opts_prepend:OK torvalds#268 tc_opts_query:OK torvalds#269 tc_opts_query_attach:OK <--- (new test) torvalds#270 tc_opts_replace:OK torvalds#271 tc_opts_revision:OK Summary: 20/0 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

Add a new test case which performs double query of the bpf_mprog through libbpf API, but also via raw bpf(2) syscall. This is testing to gather first the count and then in a subsequent probe the full information with the program array without clearing passed structs in between. # ./vmtest.sh -- ./test_progs -t tc_opts [...] ./test_progs -t tc_opts [ 1.398818] tsc: Refined TSC clocksource calibration: 3407.999 MHz [ 1.400263] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x311fd336761, max_idle_ns: 440795243819 ns [ 1.402734] clocksource: Switched to clocksource tsc [ 1.426639] bpf_testmod: loading out-of-tree module taints kernel. [ 1.428112] bpf_testmod: module verification failed: signature and/or required key missing - tainting kernel torvalds#252 tc_opts_after:OK torvalds#253 tc_opts_append:OK torvalds#254 tc_opts_basic:OK torvalds#255 tc_opts_before:OK torvalds#256 tc_opts_chain_classic:OK torvalds#257 tc_opts_chain_mixed:OK torvalds#258 tc_opts_delete_empty:OK torvalds#259 tc_opts_demixed:OK torvalds#260 tc_opts_detach:OK torvalds#261 tc_opts_detach_after:OK torvalds#262 tc_opts_detach_before:OK torvalds#263 tc_opts_dev_cleanup:OK torvalds#264 tc_opts_invalid:OK torvalds#265 tc_opts_max:OK torvalds#266 tc_opts_mixed:OK torvalds#267 tc_opts_prepend:OK torvalds#268 tc_opts_query:OK <--- (new test) torvalds#269 tc_opts_replace:OK torvalds#270 tc_opts_revision:OK Summary: 19/0 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

Add a new test case to query on an empty bpf_mprog and pass the revision directly into expected_revision for attachment to assert that this does succeed. ./test_progs -t tc_opts [ 1.406778] tsc: Refined TSC clocksource calibration: 3407.990 MHz [ 1.408863] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x311fcaf6eb0, max_idle_ns: 440795321766 ns [ 1.412419] clocksource: Switched to clocksource tsc [ 1.428671] bpf_testmod: loading out-of-tree module taints kernel. [ 1.430260] bpf_testmod: module verification failed: signature and/or required key missing - tainting kernel torvalds#252 tc_opts_after:OK torvalds#253 tc_opts_append:OK torvalds#254 tc_opts_basic:OK torvalds#255 tc_opts_before:OK torvalds#256 tc_opts_chain_classic:OK torvalds#257 tc_opts_chain_mixed:OK torvalds#258 tc_opts_delete_empty:OK torvalds#259 tc_opts_demixed:OK torvalds#260 tc_opts_detach:OK torvalds#261 tc_opts_detach_after:OK torvalds#262 tc_opts_detach_before:OK torvalds#263 tc_opts_dev_cleanup:OK torvalds#264 tc_opts_invalid:OK torvalds#265 tc_opts_max:OK torvalds#266 tc_opts_mixed:OK torvalds#267 tc_opts_prepend:OK torvalds#268 tc_opts_query:OK torvalds#269 tc_opts_query_attach:OK <--- (new test) torvalds#270 tc_opts_replace:OK torvalds#271 tc_opts_revision:OK Summary: 20/0 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>