Hello, syzbot found the following crash on: HEAD commit: 673b41e0 staging/octeon: fix up merge error git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=141bd4b7e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=acf766c0e3d3f8c6 dashboard link: https://syzkaller.appspot.com/bug?extid=0c3370f235b74b3cfd97 compiler: clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13ac1b9de00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10449493e00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+0c3370f235b74b3cfd97@xxxxxxxxxxxxxxxxxxxxxxxxx RSP: 002b:00007ffe08a3a528 EFLAGS: 00000246 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412a9 RDX: 0000000000000001 RSI: 0000000020000000 RDI: 0000000000000910 RBP: 000000000000acfd R08: 0000000000000001 R09: 00000000004002c8 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004021f0 R13: 0000000000402280 R14: 0000000000000000 R15: 0000000000000000 INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. CPU: 1 PID: 7017 Comm: syz-executor095 Not tainted 5.6.0-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+0x1e9/0x30e lib/dump_stack.c:118 register_lock_class+0x76a/0x1000 kernel/locking/lockdep.c:472 __lock_acquire+0x102/0x2b90 kernel/locking/lockdep.c:4223 lock_acquire+0x169/0x480 kernel/locking/lockdep.c:4923 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x9e/0xc0 kernel/locking/spinlock.c:159 __wake_up_common_lock kernel/sched/wait.c:122 [inline] __wake_up+0xb8/0x150 kernel/sched/wait.c:142 io_cqring_ev_posted+0x9f/0x1c0 fs/io_uring.c:1150 io_poll_remove_all fs/io_uring.c:4343 [inline] io_ring_ctx_wait_and_kill+0x537/0xfd0 fs/io_uring.c:7223 io_uring_create fs/io_uring.c:7761 [inline] io_uring_setup fs/io_uring.c:7788 [inline] __do_sys_io_uring_setup fs/io_uring.c:7801 [inline] __se_sys_io_uring_setup+0x1e49/0x2650 fs/io_uring.c:7798 do_syscall_64+0xf3/0x1b0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4412a9 Code: e8 5c ae 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 bb 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffe08a3a528 EFLAGS: 00000246 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412a9 RDX: 0000000000000001 RSI: 0000000020000000 RDI: 0000000000000910 RBP: 000000000000acfd R08: 0000000000000001 R09: 00000000004002c8 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004021f0 R13: 0000000000402280 R14: 0000000000000000 R15: 0000000000000000 general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 PID: 7017 Comm: syz-executor095 Not tainted 5.6.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__wake_up_common+0x297/0x4d0 kernel/sched/wait.c:86 Code: fb 01 00 00 45 31 f6 eb 13 66 2e 0f 1f 84 00 00 00 00 00 4d 39 fc 0f 84 e3 01 00 00 4c 89 fb 49 8d 6f e8 4c 89 f8 48 c1 e8 03 <80> 3c 10 00 74 12 48 89 df e8 6b b5 59 00 48 ba 00 00 00 00 00 fc RSP: 0018:ffffc900043e7c00 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff8880a6860120 RBP: ffffffffffffffe8 R08: 0000000000000000 R09: ffffc900043e7c68 R10: fffff5200087cf80 R11: 0000000000000000 R12: ffff8880a6860160 R13: 1ffff9200087cf8d R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000afd880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 00000000a6821000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __wake_up_common_lock kernel/sched/wait.c:123 [inline] __wake_up+0xd4/0x150 kernel/sched/wait.c:142 io_cqring_ev_posted+0x9f/0x1c0 fs/io_uring.c:1150 io_poll_remove_all fs/io_uring.c:4343 [inline] io_ring_ctx_wait_and_kill+0x537/0xfd0 fs/io_uring.c:7223 io_uring_create fs/io_uring.c:7761 [inline] io_uring_setup fs/io_uring.c:7788 [inline] __do_sys_io_uring_setup fs/io_uring.c:7801 [inline] __se_sys_io_uring_setup+0x1e49/0x2650 fs/io_uring.c:7798 do_syscall_64+0xf3/0x1b0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4412a9 Code: e8 5c ae 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 bb 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffe08a3a528 EFLAGS: 00000246 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412a9 RDX: 0000000000000001 RSI: 0000000020000000 RDI: 0000000000000910 RBP: 000000000000acfd R08: 0000000000000001 R09: 00000000004002c8 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004021f0 R13: 0000000000402280 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace c289123c7e157e7b ]--- RIP: 0010:__wake_up_common+0x297/0x4d0 kernel/sched/wait.c:86 Code: fb 01 00 00 45 31 f6 eb 13 66 2e 0f 1f 84 00 00 00 00 00 4d 39 fc 0f 84 e3 01 00 00 4c 89 fb 49 8d 6f e8 4c 89 f8 48 c1 e8 03 <80> 3c 10 00 74 12 48 89 df e8 6b b5 59 00 48 ba 00 00 00 00 00 fc RSP: 0018:ffffc900043e7c00 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff8880a6860120 RBP: ffffffffffffffe8 R08: 0000000000000000 R09: ffffc900043e7c68 R10: fffff5200087cf80 R11: 0000000000000000 R12: ffff8880a6860160 R13: 1ffff9200087cf8d R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000afd880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 00000000a6821000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This bug is generated by a bot. 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