------------[ cut here ]------------ WARNING: CPU: 1 PID: 7343 at kernel/fork.c:845 __put_task_struct+0x330/0x3d0 kernel/fork.c:845 Modules linked in: CPU: 1 PID: 7343 Comm: syz-executor.3 Not tainted 6.2.0-rc3-next-20230112-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:__put_task_struct+0x330/0x3d0 kernel/fork.c:845 Code: 0e 4c 89 e6 e8 f1 3a 85 00 e9 22 ff ff ff e8 c7 aa 37 00 be 03 00 00 00 4c 89 e7 e8 fa 91 bf 02 e9 0b ff ff ff e8 b0 aa 37 00 <0f> 0b e9 1a fd ff ff e8 a4 aa 37 00 0f 0b e9 62 fd ff ff e8 98 aa RSP: 0018:ffffc9000c2378e8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff8880750e8000 RSI: ffffffff814a1230 RDI: 0000000000000005 RBP: ffff8880750e8000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880750e8028 R13: ffff88802844ba00 R14: ffff888140abf150 R15: ffff888140abf148 FS: 00007fa22c35b700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f163881f000 CR3: 000000001e115000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: put_task_struct include/linux/sched/task.h:119 [inline] io_wq_exit_workers io_uring/io-wq.c:1266 [inline] io_wq_put_and_exit+0xb47/0xd80 io_uring/io-wq.c:1294 io_uring_clean_tctx+0x117/0x178 io_uring/tctx.c:193 io_uring_cancel_generic+0x5ae/0x606 io_uring/io_uring.c:3229 io_uring_files_cancel include/linux/io_uring.h:55 [inline] do_exit+0x522/0x2a90 kernel/exit.c:822 do_group_exit+0xd4/0x2a0 kernel/exit.c:1012 get_signal+0x225f/0x24f0 kernel/signal.c:2859 arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306 exit_to_user_mode_loop kernel/entry/common.c:168 [inline] exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:297 do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fa22b68c0c9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa22c35b218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007fa22b7abf88 RCX: 00007fa22b68c0c9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fa22b7abf88 RBP: 00007fa22b7abf80 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa22b7abf8c R13: 00007ffce94ab83f R14: 00007fa22c35b300 R15: 0000000000022000