------------[ cut here ]------------ WARNING: CPU: 1 PID: 12384 at kernel/fork.c:731 __put_task_struct+0x2e0/0x460 kernel/fork.c:731 Modules linked in: CPU: 1 UID: 0 PID: 12384 Comm: syz.3.10713 Not tainted 6.16.0-rc2-syzkaller-00162-g41687a5c6f8b #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:__put_task_struct+0x2e0/0x460 kernel/fork.c:731 Code: 20 11 4c 89 f6 e8 50 ed 95 00 48 89 df e8 58 0a 19 00 48 89 df 5b 41 5c 41 5d 41 5e 41 5f 5d e9 f6 f3 ff ff e8 71 36 3d 00 90 <0f> 0b 90 e9 6c fd ff ff e8 63 36 3d 00 90 0f 0b 90 e9 9c fd ff ff RSP: 0018:ffffc90003d5fc28 EFLAGS: 00010293 RAX: ffffffff818325df RBX: ffff8880308b0000 RCX: ffff88802a2b0000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 000000000000ff00 R09: 00000000d06f8e0c R10: 00000000851db375 R11: 000000003d4e2d16 R12: dffffc0000000000 R13: ffff8880308b0028 R14: ffff8880308b0570 R15: ffff8880308b0000 FS: 00007f0738dd56c0(0000) GS:ffff888125d51000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555569ecd5c8 CR3: 00000000786e2000 CR4: 00000000003526f0 Call Trace: put_task_struct include/linux/sched/task.h:145 [inline] io_sq_offload_create+0xcaa/0x10e0 io_uring/sqpoll.c:517 io_uring_create+0x60d/0xb60 io_uring/io_uring.c:3747 io_uring_setup io_uring/io_uring.c:3830 [inline] __do_sys_io_uring_setup io_uring/io_uring.c:3864 [inline] __se_sys_io_uring_setup+0x264/0x270 io_uring/io_uring.c:3855 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f073af8e929 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0738dd5038 EFLAGS: 00000246 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 00007f073b1b6160 RCX: 00007f073af8e929 RDX: 0000000000000000 RSI: 0000200000002380 RDI: 0000000000007d2e RBP: 00007f073b010b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f073b1b6160 R15: 00007f073b2dfa28