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BUG: KCSAN: data-race in smc_poll / smc_switch_to_fallback
write to 0xffff8881321b9d3d of 1 bytes by task 9321 on cpu 0:
smc_switch_to_fallback+0x5f/0x730 net/smc/af_smc.c:872
smc_sendmsg+0x191/0x380 net/smc/af_smc.c:2656
sock_sendmsg_nosec net/socket.c:714 [inline]
sock_sendmsg net/socket.c:734 [inline]
____sys_sendmsg+0x38f/0x500 net/socket.c:2476
___sys_sendmsg net/socket.c:2530 [inline]
__sys_sendmsg+0x19a/0x230 net/socket.c:2559
__do_sys_sendmsg net/socket.c:2568 [inline]
__se_sys_sendmsg net/socket.c:2566 [inline]
__x64_sys_sendmsg+0x42/0x50 net/socket.c:2566
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
read to 0xffff8881321b9d3d of 1 bytes by task 9320 on cpu 1:
smc_poll+0x41/0x4a0 net/smc/af_smc.c:2737
sock_poll+0x23e/0x260 net/socket.c:1353
vfs_poll include/linux/poll.h:88 [inline]
do_pollfd fs/select.c:873 [inline]
do_poll fs/select.c:921 [inline]
do_sys_poll+0x6d5/0xca0 fs/select.c:1015
__do_sys_ppoll fs/select.c:1121 [inline]
__se_sys_ppoll+0x195/0x1d0 fs/select.c:1101
__x64_sys_ppoll+0x63/0x70 fs/select.c:1101
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
value changed: 0x00 -> 0x01
Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 9320 Comm: syz-executor.4 Tainted: G W 6.2.0-rc3-syzkaller-00008-g1fe4fd6f5cad-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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