op-tee patch set: Enable OP-TEE #59
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andr2000
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When either "goto wait_interrupted;" or "goto wait_error;" paths are taken, socket lock has already been released. This patch fixes following syzbot splat : WARNING: bad unlock balance detected! 5.0.0-rc4+ xen-troops#59 Not tainted ------------------------------------- syz-executor223/8256 is trying to release lock (sk_lock-AF_RXRPC) at: [<ffffffff86651353>] rxrpc_recvmsg+0x6d3/0x3099 net/rxrpc/recvmsg.c:598 but there are no more locks to release! other info that might help us debug this: 1 lock held by syz-executor223/8256: #0: 00000000fa9ed0f4 (slock-AF_RXRPC){+...}, at: spin_lock_bh include/linux/spinlock.h:334 [inline] #0: 00000000fa9ed0f4 (slock-AF_RXRPC){+...}, at: release_sock+0x20/0x1c0 net/core/sock.c:2798 stack backtrace: CPU: 1 PID: 8256 Comm: syz-executor223 Not tainted 5.0.0-rc4+ xen-troops#59 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 print_unlock_imbalance_bug kernel/locking/lockdep.c:3391 [inline] print_unlock_imbalance_bug.cold+0x114/0x123 kernel/locking/lockdep.c:3368 __lock_release kernel/locking/lockdep.c:3601 [inline] lock_release+0x67e/0xa00 kernel/locking/lockdep.c:3860 sock_release_ownership include/net/sock.h:1471 [inline] release_sock+0x183/0x1c0 net/core/sock.c:2808 rxrpc_recvmsg+0x6d3/0x3099 net/rxrpc/recvmsg.c:598 sock_recvmsg_nosec net/socket.c:794 [inline] sock_recvmsg net/socket.c:801 [inline] sock_recvmsg+0xd0/0x110 net/socket.c:797 __sys_recvfrom+0x1ff/0x350 net/socket.c:1845 __do_sys_recvfrom net/socket.c:1863 [inline] __se_sys_recvfrom net/socket.c:1859 [inline] __x64_sys_recvfrom+0xe1/0x1a0 net/socket.c:1859 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x446379 Code: e8 2c b3 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fe5da89fd98 EFLAGS: 00000246 ORIG_RAX: 000000000000002d RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446379 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c R13: 0000000000000000 R14: 0000000000000000 R15: 20c49ba5e353f7cf Fixes: 248f219 ("rxrpc: Rewrite the data and ack handling code") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: David Howells <dhowells@redhat.com> Reported-by: syzbot <syzkaller@googlegroups.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Adds TEE_IOCTL_PARAM_ATTR_META which can be used to indicate meta parameters when communicating with user space. These meta parameters can be used by supplicant support multiple parallel requests at a time. Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Adds support for asynchronous supplicant requests, meaning that the supplicant can process several requests in parallel or block in a request for some time. Acked-by: Etienne Carriere <etienne.carriere@linaro.org> Tested-by: Etienne Carriere <etienne.carriere@linaro.org> (b2260 pager=y/n) Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Makes creation of shm pools more flexible by adding new more primitive functions to allocate a shm pool. This makes it easier to add driver specific shm pool management. Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org> Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
Added new ioctl to allow users register own buffers as a shared memory. Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com> [jw: moved tee_shm_is_registered() declaration] [jw: added space after __tee_shm_alloc() implementation] Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
There were changes in REE<->OP-TEE ABI recently. Now ABI allows us to pass non-contiguous memory buffers as list of pages to OP-TEE. This can be achieved by using new parameter attribute OPTEE_MSG_ATTR_NONCONTIG. OP-TEE also is able to use all non-secure RAM for shared buffers. This new capability is enabled with OPTEE_SMC_SEC_CAP_DYNAMIC_SHM flag. This patch adds necessary definitions to the protocol definition files at Linux side. Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
These functions will be used to pass information about shared buffers to OP-TEE. ABI between Linux and OP-TEE is defined in optee_msg.h and optee_smc.h. optee_msg.h defines OPTEE_MSG_ATTR_NONCONTIG attribute for shared memory references and describes how such references should be passed. Note that it uses 64-bit page addresses even on 32 bit systems. This is done to support LPAE and to unify interface. Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com> [jw: replacing uint64_t with u64 in optee_fill_pages_list()] Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
This change adds ops for shm_(un)register functions in tee interface. Client application can use these functions to (un)register an own shared buffer in OP-TEE address space. This allows zero copy data sharing between Normal and Secure Worlds. Please note that while those functions were added to optee code, it does not report to userspace that those functions are available. OP-TEE code does not set TEE_GEN_CAP_REG_MEM flag. This flag will be enabled only after all other features of dynamic shared memory will be implemented in subsequent patches. Of course user can ignore presence of TEE_GEN_CAP_REG_MEM flag and try do call those functions. This is okay, driver will register shared buffer in OP-TEE, but any attempts to use this shared buffer will fail. Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Now, when client applications can register own shared buffers in OP-TEE, we need to extend ABI for parameter passing to/from OP-TEE. So, if OP-TEE core detects that parameter belongs to registered shared memory, it will use corresponding parameter attribute. Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
With latest changes to OP-TEE we can use any buffers as a shared memory. Thus, it is possible for supplicant to provide part of own memory when OP-TEE asks to allocate a shared buffer. This patch adds support for such feature into RPC handling code. Now when OP-TEE asks supplicant to allocate shared buffer, supplicant can use TEE_IOC_SHM_REGISTER to provide such buffer. RPC handler is aware of this, so it will pass list of allocated pages to OP-TEE. Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com> [jw: fix parenthesis alignment in free_pages_list()] Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Those capabilities will be used in subsequent patches. Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
This is simple pool that uses kernel page allocator. This pool can be used in case OP-TEE supports dynamic shared memory. Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Previous patches added various features that are needed for dynamic SHM. Dynamic SHM allows Normal World to share any buffers with OP-TEE. While original design suggested to use pre-allocated region (usually of 1M to 2M of size), this new approach allows to use all non-secure RAM for command buffers, RPC allocations and TA parameters. This patch checks capability OPTEE_SMC_SEC_CAP_DYNAMIC_SHM. If it was set by OP-TEE, then kernel part of OP-TEE will use kernel page allocator to allocate command buffers. Also it will set TEE_GEN_CAP_REG_MEM capability to tell userspace that it supports shared memory registration. Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
We need to ensure that tee_context is present until last shared buffer will be freed. Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Now, when struct tee_shm is defined in public header, we can inline small getter functions like this one. Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
The optee driver includes the header files in an unusual order, with asm/pgtable.h before the linux/*.h headers. For some reason this seems to trigger a build failure: drivers/tee/optee/call.c: In function 'optee_fill_pages_list': include/asm-generic/memory_model.h:64:14: error: implicit declaration of function 'page_to_section'; did you mean '__nr_to_section'? [-Werror=implicit-function-declaration] int __sec = page_to_section(__pg); \ drivers/tee/optee/call.c:494:15: note: in expansion of macro 'page_to_phys' optee_page = page_to_phys(*pages) + Let's just include linux/mm.h, which will then get the other header implicitly. Fixes: 3bb48ba ("tee: optee: add page list manipulation functions") Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Adds a start argument to the shm_register callback to allow the callback to check memory type of the passed pages. Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Checks the memory type of the pages to be registered as shared memory. Only normal cached memory is allowed. Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
The function __tee_shm_alloc is local to the source and does not need to be in global scope, so make it static. Cleans up sparse warning: symbol '__tee_shm_alloc' was not declared. Should it be static? Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
In the case that shm->pages fails to allocate, the current exit
error path will try to put_page on a null shm->pages and cause
a null pointer dereference when accessing shm->pages[n]. Fix this
by only performing the put_page and kfree on shm->pages if it
is not null.
Detected by CoverityScan, CID#1463283 ("Dereference after null check")
Fixes: 033ddf1 ("tee: add register user memory")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
get_user_pages_fast() can return zero in certain error paths. We should handle that or else it means we accidentally return ERR_PTR(0) which is NULL instead of an error pointer. The callers are not expecting that and will crash with a NULL dereference. Fixes: 033ddf1 ("tee: add register user memory") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
The privileged dev id range is [TEE_NUM_DEVICES / 2, TEE_NUM_DEVICES). The non-privileged dev id range is [0, TEE_NUM_DEVICES / 2). So when finding a slot for them, need to use different max value. Signed-off-by: Peng Fan <peng.fan@nxp.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
In the OPTEE_SMC_CALL_GET_OS_REVISION request, the previously reserved parameter a2 is now documented as being an optional build identifier (such as an SCM revision or commit ID, for instance). A new structure optee_smc_call_get_os_revision_result is introduced to be used when querying the secure OS version, instead of re-using the struct defined for OPTEE_SMC_CALLS_REVISION. Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org> Reviewed-by: Matthias Brugger <mbruger@suse.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
When the driver initializes, report the following information about the OP-TEE OS: - major and minor version, - build identifier (if available). Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org> Reviewed-by: Matthias Brugger <mbruger@suse.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
The two do the same thing, but we want to have a consistent naming in the kernel. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
This change adds KCONFIG option to set number of pages out of whole shared memory to be used for OP-TEE driver private data structures. Signed-off-by: Sahil Malhotra <sahil.malhotra@nxp.com> [jw: fixing trivial merge conflict] Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Adds a kernel internal TEE client interface to be used by other drivers. Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
This change allows userland to create a tee_shm object that refers to a dmabuf reference. Userland provides a dmabuf file descriptor as buffer reference. The created tee_shm object exported as a brand new dmabuf reference used to provide a clean fd to userland. Userland shall closed this new fd to release the tee_shm object resources. The initial dmabuf resources are tracked independently through original dmabuf file descriptor. Once the buffer is registered and until it is released, TEE driver keeps a refcount on the registered dmabuf structure. This change only support dmabuf references that relates to physically contiguous memory buffers. New tee_shm flag to identify tee_shm objects built from a registered dmabuf: TEE_SHM_EXT_DMA_BUF. Such tee_shm structures are flagged both TEE_SHM_DMA_BUF and TEE_SHM_EXT_DMA_BUF. Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org> Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Add Benchmark support Reviewed-by: Joakim Bech <joakim.bech@linaro.org> Signed-off-by: Igor Opaniuk <igor.opaniuk@linaro.org>
<linux/tee_drv.h> is not used by the benchmark code and happens to
introduce a compile warning if it is included without
<linux/platform_device.h> (or, more exactly, <linux/device.h>).
In file included from drivers/tee/optee/optee_bench.h:19:0,
from drivers/tee/optee/bench.c:15:
./include/linux/tee_drv.h:127:16: warning: 'struct device' declared inside parameter list will not be visible outside of this definition or declaration
struct device *dev,
^~~~~~
Fixes: 4867f93 ("OP-TEE Benchmark **not for mainline**")
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Joakim Bech <joakim.bech@linaro.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
Suggested-by: Jerome Forissier <jerome.forissier@linaro.org> Signed-off-by: Victor Chong <victor.chong@linaro.org> Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
Successful registration of a memory reference in the scope of a TEE content must increase the context refcount. This change adds this missing refcount increase. The context refcount is already decremented when such shm reference is freed by its owner, in tee_shm_release(), hence current unbalance refcount before this path is applied. Fixes: 02b91c7 ("tee: new ioctl to a register tee_shm from a dmabuf file descriptor") Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org> Tested-by: Etienne Carriere <etienne.carriere@linaro.org> (Qemu armv7/v8) Acked-by: Jens Wiklander <jens.wiklander@linaro.org> [jf: update SHA-1 of commit in Fixes: tag after rebasing onto v4.18] Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Add support of allocating DMA shared buffers via RPC calls. The main difference with OPTEE_MSG_RPC_SHM_TYPE_KERNEL is that SHM pool manager for shared memory exported to user space is explicitly chosen. As dma-buf is used for exporting buffers to userspace, it provides a possiblity to mmap an allocated SHM buffer into multiple TEE client applications (unlike OPTEE_MSG_RPC_SHM_TYPE_APPL, which leverages tee-supplicant for private allocations). Such buffers should be used only for internal purposes, when there is a need to share meta data between different OP-TEE components (for debugging/profiling purposes). Signed-off-by: Igor Opaniuk <igor.opaniuk@linaro.org>
Fix compilation issue: drivers/tee/optee/rpc.c: In function 'handle_rpc_func_cmd_shm_alloc': drivers/tee/optee/rpc.c:236:7: error: 'OPTEE_MSG_RPC_SHM_TYPE_KERNEL_GLOBAL' undeclared (first use in this function) case OPTEE_MSG_RPC_SHM_TYPE_KERNEL_GLOBAL: Fixes: 0c23453 ("tee: support of allocating DMA shared buffers **not for mainline**") Signed-off-by: Igor Opaniuk <igor.opaniuk@linaro.org>
DT nodes may have a 'status' property which, if set to anything other than 'ok' or 'okay', indicates to the OS that the DT node should be treated as if it was not present. So add that missing logic to the OP-TEE driver. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
On virtualized systems it is possible that OP-TEE will provide only dynamic shared memory support. So it is fine to boot without static SHM enabled if dymanic one is supported. Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
These two function will be needed for shared memory registration in OP-TEE Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
In order to register a shared buffer in TEE, we need accessor function that return list of pages for that buffer. Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Suggested-by: Volodymyr Babchuk <volodymyr_babchuk@epam.com> Signed-off-by: Ruslan Shymkevych <ruslan_shymkevych@epam.com>
rshym
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otyshchenko1
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Oct 5, 2022
Since the check_user_trigger() is called outside of RCU read lock, this list_for_each_entry_rcu() caused a suspicious RCU usage warning. # echo hist:keys=pid > events/sched/sched_stat_runtime/trigger # cat events/sched/sched_stat_runtime/trigger [ 43.167032] [ 43.167418] ============================= [ 43.167992] WARNING: suspicious RCU usage [ 43.168567] 5.19.0-rc5-00029-g19ebe4651abf xen-troops#59 Not tainted [ 43.169283] ----------------------------- [ 43.169863] kernel/trace/trace_events_trigger.c:145 RCU-list traversed in non-reader section!! ... However, this file->triggers list is safe when it is accessed under event_mutex is held. To fix this warning, adds a lockdep_is_held check to the list_for_each_entry_rcu(). Link: https://lkml.kernel.org/r/166226474977.223837.1992182913048377113.stgit@devnote2 Cc: stable@vger.kernel.org Fixes: 7491e2c ("tracing: Add a probe that attaches to trace events") Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
otyshchenko1
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Some pagemap types, like MEMORY_DEVICE_GENERIC (device-dax) do not even have pagemap ops which results in crash signatures like this: BUG: kernel NULL pointer dereference, address: 0000000000000010 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 8000000205073067 P4D 8000000205073067 PUD 2062b3067 PMD 0 Oops: 0000 [#1] PREEMPT SMP PTI CPU: 22 PID: 4535 Comm: device-dax Tainted: G OE N 6.0.0-rc2+ xen-troops#59 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015 RIP: 0010:memory_failure+0x667/0xba0 [..] Call Trace: <TASK> ? _printk+0x58/0x73 do_madvise.part.0.cold+0xaf/0xc5 Check for ops before checking if the ops have a memory_failure() handler. Link: https://lkml.kernel.org/r/166153428781.2758201.1990616683438224741.stgit@dwillia2-xfh.jf.intel.com Fixes: 33a8f7f ("pagemap,pmem: introduce ->memory_failure()") Signed-off-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com> Reviewed-by: Miaohe Lin <linmiaohe@huawei.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Shiyang Ruan <ruansy.fnst@fujitsu.com> Cc: Darrick J. Wong <djwong@kernel.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Dave Chinner <david@fromorbit.com> Cc: Goldwyn Rodrigues <rgoldwyn@suse.de> Cc: Jane Chu <jane.chu@oracle.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Ritesh Harjani <riteshh@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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This pull request depends on #56