WARNING in __put_task

Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported
WARNING: ODEBUG bug in io_sq_offload_create io-uring	C			8	21h47m	1d21h

21h47m

1d21h

Title	Replies (including bot)	Last reply
[syzbot] [mm?] WARNING in __put_task_struct (5)	2 (3)	2025/06/18 22:49

Title

Replies (including bot)

Last reply

[syzbot] [mm?] WARNING in __put_task_struct (5)

2 (3)

2025/06/18 22:49

Kernel	Title	Repro	Cause bisect	Count	Last	Reported	Patched	Status
upstream	WARNING in __put_task_struct (4) kernel			1	295d	295d	0/29	closed as invalid on 2024/09/06 13:45
upstream	WARNING in __put_task_struct kernel			1	2743d	2739d	0/29	closed as invalid on 2018/02/13 19:55
linux-4.19	WARNING in __put_task_struct			20	2088d	2097d	0/1	auto-closed as invalid on 2019/12/30 00:10
upstream	WARNING in __put_task_struct (3) io-uring	C	error	4	888d	888d	0/29	auto-obsoleted due to no activity on 2023/04/22 22:53
upstream	WARNING in __put_task_struct (2) kernel	C		17	2437d	2445d	11/29	fixed on 2018/11/12 21:25

RBP: 00007ff5f3810b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ff5f39b5fa0 R15: 00007ffd192cb478 </TASK> ------------[ cut here ]------------ WARNING: CPU: 1 PID: 6071 at kernel/fork.c:731 __put_task_struct+0x340/0x530 kernel/fork.c:731 Modules linked in: CPU: 1 UID: 0 PID: 6071 Comm: syz.2.22 Not tainted 6.16.0-rc2-syzkaller-00045-g4663747812d1 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:__put_task_struct+0x340/0x530 kernel/fork.c:731 Code: f6 ac 41 00 be 03 00 00 00 4c 89 e7 e8 f9 c2 5e 03 e9 ed fe ff ff e8 df ac 41 00 90 0f 0b 90 e9 6d fd ff ff e8 d1 ac 41 00 90 <0f> 0b 90 e9 0b fd ff ff e8 c3 ac 41 00 90 0f 0b 90 e9 67 fd ff ff RSP: 0018:ffffc90002fd7c50 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff888026d18000 RCX: ffffffff8179d88b RDX: ffff888032081e00 RSI: ffffffff8179db7f RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888026d18000 R13: 1ffff920005faf96 R14: ffff888026d18028 R15: 0000000000000000 FS: 00007ff5f452f6c0(0000) GS:ffff888124861000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff5f3725b20 CR3: 0000000073166000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> put_task_struct include/linux/sched/task.h:145 [inline] put_task_struct include/linux/sched/task.h:132 [inline] io_sq_offload_create+0xe4b/0x1330 io_uring/sqpoll.c:517 io_uring_create io_uring/io_uring.c:3747 [inline] io_uring_setup+0x1493/0x2080 io_uring/io_uring.c:3830 __do_sys_io_uring_setup io_uring/io_uring.c:3864 [inline] __se_sys_io_uring_setup io_uring/io_uring.c:3855 [inline] __x64_sys_io_uring_setup+0xc2/0x170 io_uring/io_uring.c:3855 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x490 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff5f378e929 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:00007ff5f452f038 EFLAGS: 00000246 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 00007ff5f39b5fa0 RCX: 00007ff5f378e929 RDX: 0000000000000000 RSI: 0000200000000080 RDI: 0000000000000059 RBP: 00007ff5f3810b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ff5f39b5fa0 R15: 00007ffd192cb478 </TASK>

Crashes (3):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	VM info	Assets (help?)	Manager	Title
2025/06/18 02:16	upstream	4663747812d1	74c9d252	.config	console log	report	syz / log		[disk image] [vmlinux] [kernel image]	ci-qemu-gce-upstream-auto	WARNING in __put_task_struct
2025/06/18 09:06	upstream	52da431bf03b	e77fae15	.config	console log	report		info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-badwrites-root	WARNING in __put_task_struct
2025/06/17 23:51	upstream	4663747812d1	74c9d252	.config	console log	report		info	[disk image] [vmlinux] [kernel image]	ci-qemu-gce-upstream-auto	WARNING in __put_task_struct

Crashes (3):

Assets (help?)