CC: [email protected] CC: [email protected] BCC: [email protected] CC: [email protected] TO: Cong Wang <[email protected]> CC: Alexei Starovoitov <[email protected]>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: f022814633e1c600507b3a99691b4d624c2813f0 commit: b01fd6e802b6d0a635176f943315670b679d8d7b skmsg: Introduce a spinlock to protect ingress_msg date: 12 months ago :::::: branch date: 20 hours ago :::::: commit date: 12 months ago config: arm-randconfig-c002-20220327 (https://download.01.org/0day-ci/archive/20220328/[email protected]/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 0f6d9501cf49ce02937099350d08f20c4af86f3d) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b01fd6e802b6d0a635176f943315670b679d8d7b git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout b01fd6e802b6d0a635176f943315670b679d8d7b # save the config file to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm clang-analyzer If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> clang-analyzer warnings: (new ones prefixed by >>) ^~~~~~~~~~~~~~~~~~ fs/fscache/operation.c:597:3: note: Taking false branch if (object->n_ops == 0) ^ fs/fscache/operation.c:601:3: note: Memory is released kfree(op); ^~~~~~~~~ fs/fscache/operation.c:571:2: note: Loop condition is true. Execution continues on line 572 do { ^ fs/fscache/operation.c:573:7: note: Assuming the condition is false if (list_empty(&cache->op_gc_list)) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/fscache/operation.c:573:3: note: Taking false branch if (list_empty(&cache->op_gc_list)) { ^ fs/fscache/operation.c:578:8: note: Left side of '&&' is false op = list_entry(cache->op_gc_list.next, ^ include/linux/list.h:511:2: note: expanded from macro 'list_entry' container_of(ptr, type, member) ^ include/linux/kernel.h:709:61: note: expanded from macro 'container_of' BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ ^ fs/fscache/operation.c:578:8: note: Taking false branch op = list_entry(cache->op_gc_list.next, ^ include/linux/list.h:511:2: note: expanded from macro 'list_entry' container_of(ptr, type, member) ^ include/linux/kernel.h:709:2: note: expanded from macro 'container_of' BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ ^ include/linux/build_bug.h:39:37: note: expanded from macro 'BUILD_BUG_ON_MSG' #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) ^ include/linux/compiler_types.h:320:2: note: expanded from macro 'compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ^ include/linux/compiler_types.h:308:2: note: expanded from macro '_compiletime_assert' __compiletime_assert(condition, msg, prefix, suffix) ^ include/linux/compiler_types.h:300:3: note: expanded from macro '__compiletime_assert' if (!(condition)) \ ^ fs/fscache/operation.c:578:8: note: Loop condition is false. Exiting loop op = list_entry(cache->op_gc_list.next, ^ include/linux/list.h:511:2: note: expanded from macro 'list_entry' container_of(ptr, type, member) ^ include/linux/kernel.h:709:2: note: expanded from macro 'container_of' BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ ^ include/linux/build_bug.h:39:37: note: expanded from macro 'BUILD_BUG_ON_MSG' #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) ^ include/linux/compiler_types.h:320:2: note: expanded from macro 'compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ^ include/linux/compiler_types.h:308:2: note: expanded from macro '_compiletime_assert' __compiletime_assert(condition, msg, prefix, suffix) ^ include/linux/compiler_types.h:298:2: note: expanded from macro '__compiletime_assert' do { \ ^ fs/fscache/operation.c:580:3: note: Calling 'list_del' list_del(&op->pend_link); ^~~~~~~~~~~~~~~~~~~~~~~~ include/linux/list.h:147:14: note: Use of memory after it is freed entry->next = LIST_POISON1; ~~~~~~~~~~~ ^ Suppressed 2 warnings (1 in non-user code, 1 with check filters). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 4 warnings generated. Suppressed 4 warnings (2 in non-user code, 2 with check filters). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 1 warning generated. Suppressed 1 warnings (1 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 1 warning generated. Suppressed 1 warnings (1 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 1 warning generated. Suppressed 1 warnings (1 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 1 warning generated. Suppressed 1 warnings (1 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 2 warnings generated. drivers/power/supply/88pm860x_battery.c:197:3: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores] ret = ((buf[4] >> 6) << 10) | ((buf[3] >> 6) << 8) ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/power/supply/88pm860x_battery.c:197:3: note: Value stored to 'ret' is never read ret = ((buf[4] >> 6) << 10) | ((buf[3] >> 6) << 8) ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Suppressed 1 warnings (1 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. >> include/linux/skmsg.h:312:2: warning: Use of memory after it is freed >> [clang-analyzer-unix.Malloc] return msg; ^ net/ipv4/tcp_bpf.c:21:11: note: Calling 'sk_psock_peek_msg' msg_rx = sk_psock_peek_msg(psock); ^~~~~~~~~~~~~~~~~~~~~~~~ include/linux/skmsg.h:310:8: note: Left side of '||' is false msg = list_first_entry_or_null(&psock->ingress_msg, struct sk_msg, list); ^ include/linux/list.h:545:28: note: expanded from macro 'list_first_entry_or_null' struct list_head *pos__ = READ_ONCE(head__->next); \ ^ include/asm-generic/rwonce.h:49:2: note: expanded from macro 'READ_ONCE' compiletime_assert_rwonce_type(x); \ ^ include/asm-generic/rwonce.h:36:21: note: expanded from macro 'compiletime_assert_rwonce_type' compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ ^ include/linux/compiler_types.h:282:3: note: expanded from macro '__native_word' (sizeof(t) == sizeof(char) || sizeof(t) == sizeof(short) || \ ^ include/linux/skmsg.h:310:8: note: Left side of '||' is false msg = list_first_entry_or_null(&psock->ingress_msg, struct sk_msg, list); ^ include/linux/list.h:545:28: note: expanded from macro 'list_first_entry_or_null' struct list_head *pos__ = READ_ONCE(head__->next); \ ^ include/asm-generic/rwonce.h:49:2: note: expanded from macro 'READ_ONCE' compiletime_assert_rwonce_type(x); \ ^ include/asm-generic/rwonce.h:36:21: note: expanded from macro 'compiletime_assert_rwonce_type' compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ ^ include/linux/compiler_types.h:282:3: note: expanded from macro '__native_word' (sizeof(t) == sizeof(char) || sizeof(t) == sizeof(short) || \ ^ include/linux/skmsg.h:310:8: note: Left side of '||' is true msg = list_first_entry_or_null(&psock->ingress_msg, struct sk_msg, list); ^ include/linux/list.h:545:28: note: expanded from macro 'list_first_entry_or_null' struct list_head *pos__ = READ_ONCE(head__->next); \ ^ include/asm-generic/rwonce.h:49:2: note: expanded from macro 'READ_ONCE' compiletime_assert_rwonce_type(x); \ ^ include/asm-generic/rwonce.h:36:21: note: expanded from macro 'compiletime_assert_rwonce_type' compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ ^ include/linux/compiler_types.h:283:28: note: expanded from macro '__native_word' sizeof(t) == sizeof(int) || sizeof(t) == sizeof(long)) ^ include/linux/skmsg.h:310:8: note: Taking false branch msg = list_first_entry_or_null(&psock->ingress_msg, struct sk_msg, list); ^ include/linux/list.h:545:28: note: expanded from macro 'list_first_entry_or_null' struct list_head *pos__ = READ_ONCE(head__->next); \ ^ include/asm-generic/rwonce.h:49:2: note: expanded from macro 'READ_ONCE' compiletime_assert_rwonce_type(x); \ ^ include/asm-generic/rwonce.h:36:2: note: expanded from macro 'compiletime_assert_rwonce_type' compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ ^ include/linux/compiler_types.h:320:2: note: expanded from macro 'compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ^ include/linux/compiler_types.h:308:2: note: expanded from macro '_compiletime_assert' __compiletime_assert(condition, msg, prefix, suffix) ^ include/linux/compiler_types.h:300:3: note: expanded from macro '__compiletime_assert' if (!(condition)) \ ^ include/linux/skmsg.h:310:8: note: Loop condition is false. Exiting loop msg = list_first_entry_or_null(&psock->ingress_msg, struct sk_msg, list); ^ include/linux/list.h:545:28: note: expanded from macro 'list_first_entry_or_null' struct list_head *pos__ = READ_ONCE(head__->next); \ ^ include/asm-generic/rwonce.h:49:2: note: expanded from macro 'READ_ONCE' compiletime_assert_rwonce_type(x); \ ^ include/asm-generic/rwonce.h:36:2: note: expanded from macro 'compiletime_assert_rwonce_type' compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ ^ include/linux/compiler_types.h:320:2: note: expanded from macro 'compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ^ include/linux/compiler_types.h:308:2: note: expanded from macro '_compiletime_assert' __compiletime_assert(condition, msg, prefix, suffix) ^ include/linux/compiler_types.h:298:2: note: expanded from macro '__compiletime_assert' do { \ ^ include/linux/skmsg.h:310:8: note: Assuming 'pos__' is not equal to 'head__' msg = list_first_entry_or_null(&psock->ingress_msg, struct sk_msg, list); ^ include/linux/list.h:546:2: note: expanded from macro 'list_first_entry_or_null' pos__ != head__ ? list_entry(pos__, type, member) : NULL; \ ^~~~~~~~~~~~~~~ include/linux/skmsg.h:310:8: note: '?' condition is true msg = list_first_entry_or_null(&psock->ingress_msg, struct sk_msg, list); -- 1 warning generated. Suppressed 1 warnings (1 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 1 warning generated. Suppressed 1 warnings (1 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 1 warning generated. Suppressed 1 warnings (1 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 1 warning generated. Suppressed 1 warnings (1 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 1 warning generated. Suppressed 1 warnings (1 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 1 warning generated. Suppressed 1 warnings (1 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 1 warning generated. Suppressed 1 warnings (1 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 2 warnings generated. Suppressed 2 warnings (2 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 6 warnings generated. drivers/bus/mhi/core/pm.c:322:17: warning: Value stored to 'dev' during its initialization is never read [clang-analyzer-deadcode.DeadStores] struct device *dev = &mhi_cntrl->mhi_dev->dev; ^~~ ~~~~~~~~~~~~~~~~~~~~~~~~ drivers/bus/mhi/core/pm.c:322:17: note: Value stored to 'dev' during its initialization is never read struct device *dev = &mhi_cntrl->mhi_dev->dev; ^~~ ~~~~~~~~~~~~~~~~~~~~~~~~ drivers/bus/mhi/core/pm.c:379:17: warning: Value stored to 'dev' during its initialization is never read [clang-analyzer-deadcode.DeadStores] struct device *dev = &mhi_cntrl->mhi_dev->dev; ^~~ ~~~~~~~~~~~~~~~~~~~~~~~~ drivers/bus/mhi/core/pm.c:379:17: note: Value stored to 'dev' during its initialization is never read struct device *dev = &mhi_cntrl->mhi_dev->dev; ^~~ ~~~~~~~~~~~~~~~~~~~~~~~~ drivers/bus/mhi/core/pm.c:709:17: warning: Value stored to 'dev' during its initialization is never read [clang-analyzer-deadcode.DeadStores] struct device *dev = &mhi_cntrl->mhi_dev->dev; ^~~ ~~~~~~~~~~~~~~~~~~~~~~~~ drivers/bus/mhi/core/pm.c:709:17: note: Value stored to 'dev' during its initialization is never read struct device *dev = &mhi_cntrl->mhi_dev->dev; ^~~ ~~~~~~~~~~~~~~~~~~~~~~~~ drivers/bus/mhi/core/pm.c:728:17: warning: Value stored to 'dev' during its initialization is never read [clang-analyzer-deadcode.DeadStores] struct device *dev = &mhi_cntrl->mhi_dev->dev; ^~~ ~~~~~~~~~~~~~~~~~~~~~~~~ drivers/bus/mhi/core/pm.c:728:17: note: Value stored to 'dev' during its initialization is never read struct device *dev = &mhi_cntrl->mhi_dev->dev; ^~~ ~~~~~~~~~~~~~~~~~~~~~~~~ drivers/bus/mhi/core/pm.c:1203:17: warning: Value stored to 'dev' during its initialization is never read [clang-analyzer-deadcode.DeadStores] struct device *dev = &mhi_cntrl->mhi_dev->dev; ^~~ ~~~~~~~~~~~~~~~~~~~~~~~~ drivers/bus/mhi/core/pm.c:1203:17: note: Value stored to 'dev' during its initialization is never read struct device *dev = &mhi_cntrl->mhi_dev->dev; ^~~ ~~~~~~~~~~~~~~~~~~~~~~~~ Suppressed 1 warnings (1 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 1 warning generated. Suppressed 1 warnings (1 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 1 warning generated. Suppressed 1 warnings (1 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 2 warnings generated. Suppressed 2 warnings (2 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 1 warning generated. Suppressed 1 warnings (1 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 1 warning generated. Suppressed 1 warnings (1 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 1 warning generated. Suppressed 1 warnings (1 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 1 warning generated. Suppressed 1 warnings (1 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 2 warnings generated. Suppressed 2 warnings (2 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 1 warning generated. Suppressed 1 warnings (1 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 1 warning generated. Suppressed 1 warnings (1 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 1 warning generated. Suppressed 1 warnings (1 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 1 warning generated. Suppressed 1 warnings (1 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 1 warning generated. Suppressed 1 warnings (1 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 1 warning generated. Suppressed 1 warnings (1 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. >> include/linux/skmsg.h:312:2: warning: Use of memory after it is freed >> [clang-analyzer-unix.Malloc] return msg; ^ net/ipv4/tcp_bpf.c:21:11: note: Calling 'sk_psock_peek_msg' msg_rx = sk_psock_peek_msg(psock); ^~~~~~~~~~~~~~~~~~~~~~~~ include/linux/skmsg.h:310:8: note: Left side of '||' is false msg = list_first_entry_or_null(&psock->ingress_msg, struct sk_msg, list); ^ include/linux/list.h:545:28: note: expanded from macro 'list_first_entry_or_null' struct list_head *pos__ = READ_ONCE(head__->next); \ ^ include/asm-generic/rwonce.h:49:2: note: expanded from macro 'READ_ONCE' compiletime_assert_rwonce_type(x); \ ^ include/asm-generic/rwonce.h:36:21: note: expanded from macro 'compiletime_assert_rwonce_type' compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ ^ include/linux/compiler_types.h:282:3: note: expanded from macro '__native_word' (sizeof(t) == sizeof(char) || sizeof(t) == sizeof(short) || \ ^ include/linux/skmsg.h:310:8: note: Left side of '||' is false msg = list_first_entry_or_null(&psock->ingress_msg, struct sk_msg, list); ^ include/linux/list.h:545:28: note: expanded from macro 'list_first_entry_or_null' struct list_head *pos__ = READ_ONCE(head__->next); \ ^ include/asm-generic/rwonce.h:49:2: note: expanded from macro 'READ_ONCE' compiletime_assert_rwonce_type(x); \ ^ include/asm-generic/rwonce.h:36:21: note: expanded from macro 'compiletime_assert_rwonce_type' compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ ^ include/linux/compiler_types.h:282:3: note: expanded from macro '__native_word' (sizeof(t) == sizeof(char) || sizeof(t) == sizeof(short) || \ ^ include/linux/skmsg.h:310:8: note: Left side of '||' is true msg = list_first_entry_or_null(&psock->ingress_msg, struct sk_msg, list); ^ include/linux/list.h:545:28: note: expanded from macro 'list_first_entry_or_null' struct list_head *pos__ = READ_ONCE(head__->next); \ ^ include/asm-generic/rwonce.h:49:2: note: expanded from macro 'READ_ONCE' compiletime_assert_rwonce_type(x); \ ^ include/asm-generic/rwonce.h:36:21: note: expanded from macro 'compiletime_assert_rwonce_type' compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ ^ include/linux/compiler_types.h:283:28: note: expanded from macro '__native_word' sizeof(t) == sizeof(int) || sizeof(t) == sizeof(long)) ^ include/linux/skmsg.h:310:8: note: Taking false branch msg = list_first_entry_or_null(&psock->ingress_msg, struct sk_msg, list); ^ include/linux/list.h:545:28: note: expanded from macro 'list_first_entry_or_null' struct list_head *pos__ = READ_ONCE(head__->next); \ ^ include/asm-generic/rwonce.h:49:2: note: expanded from macro 'READ_ONCE' compiletime_assert_rwonce_type(x); \ ^ include/asm-generic/rwonce.h:36:2: note: expanded from macro 'compiletime_assert_rwonce_type' compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ ^ include/linux/compiler_types.h:320:2: note: expanded from macro 'compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ^ include/linux/compiler_types.h:308:2: note: expanded from macro '_compiletime_assert' __compiletime_assert(condition, msg, prefix, suffix) ^ include/linux/compiler_types.h:300:3: note: expanded from macro '__compiletime_assert' if (!(condition)) \ ^ include/linux/skmsg.h:310:8: note: Loop condition is false. Exiting loop msg = list_first_entry_or_null(&psock->ingress_msg, struct sk_msg, list); ^ include/linux/list.h:545:28: note: expanded from macro 'list_first_entry_or_null' struct list_head *pos__ = READ_ONCE(head__->next); \ ^ include/asm-generic/rwonce.h:49:2: note: expanded from macro 'READ_ONCE' compiletime_assert_rwonce_type(x); \ ^ include/asm-generic/rwonce.h:36:2: note: expanded from macro 'compiletime_assert_rwonce_type' compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ ^ include/linux/compiler_types.h:320:2: note: expanded from macro 'compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ^ include/linux/compiler_types.h:308:2: note: expanded from macro '_compiletime_assert' __compiletime_assert(condition, msg, prefix, suffix) ^ include/linux/compiler_types.h:298:2: note: expanded from macro '__compiletime_assert' do { \ ^ include/linux/skmsg.h:310:8: note: Assuming 'pos__' is not equal to 'head__' msg = list_first_entry_or_null(&psock->ingress_msg, struct sk_msg, list); ^ include/linux/list.h:546:2: note: expanded from macro 'list_first_entry_or_null' pos__ != head__ ? list_entry(pos__, type, member) : NULL; \ ^~~~~~~~~~~~~~~ include/linux/skmsg.h:310:8: note: '?' condition is true msg = list_first_entry_or_null(&psock->ingress_msg, struct sk_msg, list); vim +312 include/linux/skmsg.h b01fd6e802b6d0a Cong Wang 2021-03-30 304 b01fd6e802b6d0a Cong Wang 2021-03-30 305 static inline struct sk_msg *sk_psock_peek_msg(struct sk_psock *psock) b01fd6e802b6d0a Cong Wang 2021-03-30 306 { b01fd6e802b6d0a Cong Wang 2021-03-30 307 struct sk_msg *msg; b01fd6e802b6d0a Cong Wang 2021-03-30 308 b01fd6e802b6d0a Cong Wang 2021-03-30 309 spin_lock_bh(&psock->ingress_lock); b01fd6e802b6d0a Cong Wang 2021-03-30 310 msg = list_first_entry_or_null(&psock->ingress_msg, struct sk_msg, list); b01fd6e802b6d0a Cong Wang 2021-03-30 311 spin_unlock_bh(&psock->ingress_lock); b01fd6e802b6d0a Cong Wang 2021-03-30 @312 return msg; b01fd6e802b6d0a Cong Wang 2021-03-30 313 } b01fd6e802b6d0a Cong Wang 2021-03-30 314 -- 0-DAY CI Kernel Test Service https://01.org/lkp _______________________________________________ kbuild mailing list -- [email protected] To unsubscribe send an email to [email protected]
