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WARNING in __put_task_struct (3)

Status: auto-obsoleted due to no activity on 2023/04/22 22:53
Subsystems: io-uring
[Documentation on labels]
Reported-by: syzbot+394b8403503a77a4aa45@syzkaller.appspotmail.com
First crash: 746d, last: 746d
Cause bisection: failed (error log, bisect log)
  
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[syzbot] WARNING in __put_task_struct (3) 0 (2) 2023/01/12 20:12
▶ ▼ Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in __put_task_struct (4) kernel 1 152d 152d 0/28 closed as invalid on 2024/09/06 13:45
upstream WARNING in __put_task_struct kernel 1 2601d 2597d 0/28 closed as invalid on 2018/02/13 19:55
linux-4.19 WARNING in __put_task_struct 20 1946d 1955d 0/1 auto-closed as invalid on 2019/12/30 00:10
upstream WARNING in __put_task_struct (2) kernel C 17 2294d 2303d 11/28 fixed on 2018/11/12 21:25
▶ ▼ Last patch testing requests (2)
Created Duration User Patch Repo Result
2023/04/22 22:17 20m retest repro linux-next OK log
2023/04/22 22:17 21m retest repro linux-next OK log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5072 at kernel/fork.c:845 __put_task_struct+0x330/0x3d0 kernel/fork.c:845
Modules linked in:

CPU: 1 PID: 5072 Comm: syz-executor214 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:ffffc90003bffa68 EFLAGS: 00010293

RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888027d7d7c0 RSI: ffffffff814a1230 RDI: 0000000000000005
RBP: ffff888027d7d7c0 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000403
R13: ffff888017c51940 R14: fffffffffffffbfd R15: ffff888017c51800
FS:  00007fafe995a700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fafe9a1edb8 CR3: 00000000720f8000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 put_task_struct_many include/linux/sched/task.h:125 [inline]
 io_uring_drop_tctx_refs+0xfc/0x109 io_uring/io_uring.c:745
 io_uring_cancel_generic+0x259/0x606 io_uring/io_uring.c:3186

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/01/12 21:32 linux-next 0a093b2893c7 96166539 .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in __put_task_struct
2023/01/12 20:11 linux-next 0a093b2893c7 96166539 .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in __put_task_struct
2023/01/12 10:19 linux-next 0a093b2893c7 96166539 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in __put_task_struct
2023/01/12 09:44 linux-next 0a093b2893c7 96166539 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in __put_task_struct
* Struck through repros no longer work on HEAD.