Hello, syzbot found the following issue on: HEAD commit: b765a32a Merge tag 'scsi-fixes' of git://git.kernel.org/pu.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13188279900000 kernel config: https://syzkaller.appspot.com/x/.config?x=e1c560d0f4e121c9 dashboard link: https://syzkaller.appspot.com/bug?extid=1b5d053eb77554ea5d77 compiler: clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81) Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+1b5d053eb77554ea5d77@xxxxxxxxxxxxxxxxxxxxxxxxx BUG: spinlock bad magic on CPU#0, systemd-udevd/3905 lock: 0xffff888000146cc8, .magic: 000f0f00, .owner: <none>/-1, .owner_cpu: -1 CPU: 0 PID: 3905 Comm: systemd-udevd Not tainted 5.9.0-rc3-syzkaller #0 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+0x1d6/0x29e lib/dump_stack.c:118 spin_dump kernel/locking/spinlock_debug.c:67 [inline] spin_bug kernel/locking/spinlock_debug.c:75 [inline] debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline] do_raw_spin_lock+0x2cc/0x800 kernel/locking/spinlock_debug.c:112 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:117 [inline] _raw_spin_lock_irqsave+0xb6/0xd0 kernel/locking/spinlock.c:159 try_to_wake_up+0x5f/0xbb0 kernel/sched/core.c:2859 autoremove_wake_function+0x12/0x110 kernel/sched/wait.c:389 __wake_up_common+0x30a/0x4e0 kernel/sched/wait.c:93 __wake_up_common_lock kernel/sched/wait.c:123 [inline] __wake_up+0xd4/0x150 kernel/sched/wait.c:142 ep_poll_callback+0x50e/0x910 fs/eventpoll.c:1273 __wake_up_common+0x30a/0x4e0 kernel/sched/wait.c:93 __wake_up_common_lock kernel/sched/wait.c:123 [inline] __wake_up_sync_key+0xd3/0x150 kernel/sched/wait.c:190 sock_def_readable+0x10f/0x210 net/core/sock.c:2908 __netlink_sendskb net/netlink/af_netlink.c:1251 [inline] netlink_sendskb+0x8d/0x130 net/netlink/af_netlink.c:1257 netlink_unicast+0x5b2/0x940 net/netlink/af_netlink.c:1345 netlink_sendmsg+0xa57/0xd70 net/netlink/af_netlink.c:1919 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg net/socket.c:671 [inline] ____sys_sendmsg+0x519/0x800 net/socket.c:2353 ___sys_sendmsg net/socket.c:2407 [inline] __sys_sendmsg+0x2b1/0x360 net/socket.c:2440 do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fb6a57a8e67 Code: 89 02 48 c7 c0 ff ff ff ff eb d0 0f 1f 84 00 00 00 00 00 8b 05 6a b5 20 00 85 c0 75 2e 48 63 ff 48 63 d2 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 8b 15 11 71 20 00 f7 d8 64 89 02 48 RSP: 002b:00007ffcc6917278 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000056206161bcb0 RCX: 00007fb6a57a8e67 RDX: 0000000000000000 RSI: 00007ffcc6917290 RDI: 0000000000000004 RBP: 00007ffcc6917290 R08: 000056206161bdf4 R09: 0000000000000000 R10: 0000000000000018 R11: 0000000000000246 R12: 000056206162d8c0 R13: 000000000000009b R14: 0000562061620970 R15: 0000000000000000 --- 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 syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
