==================================================================
BUG: KCSAN: data-race in p9_conn_cancel / p9_poll_workfn
write to 0xffff888132658c28 of 4 bytes by task 10836 on cpu 0:
p9_conn_cancel+0x89/0x400 net/9p/trans_fd.c:199
p9_write_work+0x3ac/0x750 net/9p/trans_fd.c:522
process_one_work kernel/workqueue.c:3267 [inline]
process_scheduled_works+0x465/0x990 kernel/workqueue.c:3348
worker_thread+0x526/0x730 kernel/workqueue.c:3429
kthread+0x1d1/0x210 kernel/kthread.c:388
ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
read to 0xffff888132658c28 of 4 bytes by task 21991 on cpu 1:
p9_poll_mux net/9p/trans_fd.c:625 [inline]
p9_poll_workfn+0xc0/0x420 net/9p/trans_fd.c:1177
process_one_work kernel/workqueue.c:3267 [inline]
process_scheduled_works+0x465/0x990 kernel/workqueue.c:3348
worker_thread+0x526/0x730 kernel/workqueue.c:3429
kthread+0x1d1/0x210 kernel/kthread.c:388
ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
value changed: 0x00000000 -> 0xffffffea
Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 21991 Comm: kworker/1:3 Not tainted 6.9.0-rc6-syzkaller-00232-gddb4c3f25b7b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: events p9_poll_workfn
==================================================================
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.