syzbot


kernel BUG in do_task_dead

Status: closed as invalid on 2024/09/13 10:29
Subsystems: kernel
[Documentation on labels]
First crash: 375d, last: 372d

Sample crash report:
------------[ cut here ]------------
kernel BUG at kernel/sched/core.c:6694!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 0 UID: 0 PID: 5329 Comm: syz.1.2 Not tainted 6.11.0-rc4-next-20240823-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:do_task_dead+0xc5/0xd0 kernel/sched/core.c:6694
Code: 03 42 0f b6 04 20 84 c0 74 14 89 d9 80 e1 07 80 c1 03 38 c1 7c 08 48 89 df e8 a7 5c 98 00 80 4b 01 80 31 ff e8 bc e3 62 0a 90 <0f> 0b 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90003d8fd10 EFLAGS: 00010246
RAX: 4343609c79743600 RBX: ffff888022449e2c RCX: 1ffff920007b1f7c
RDX: dffffc0000000000 RSI: ffffffff8c0aca40 RDI: ffffffff8c6080a0
RBP: ffffc90003d8fe98 R08: ffffffff901c1baf R09: 1ffffffff2038375
R10: dffffc0000000000 R11: fffffbfff2038376 R12: dffffc0000000000
R13: ffffffff816435d9 R14: ffff88802244a800 R15: 0000000000000246
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32613ff8 CR3: 000000007c672000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_exit+0x1f7f/0x28e0 kernel/exit.c:990
 do_group_exit+0x207/0x2c0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1097
 x64_sys_call+0x26a8/0x26b0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f62e9979e79
Code: Unable to access opcode bytes at 0x7f62e9979e4f.
RSP: 002b:00007fff5d9a7078 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f62e9979e79
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000003 R08: 00007fff5d9a715f R09: 00007f62e9ae5260
R10: 0000000000000006 R11: 0000000000000246 R12: 00007f62e9ae5f68
R13: 00007f62e9ae5260 R14: 0000000000000003 R15: 00007fff5d9a7120
 </TASK>
Modules linked in:

Crashes (11):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/08/23 11:45 linux-next c79c85875f1a ce8a9099 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in do_task_dead
2024/08/23 11:44 linux-next c79c85875f1a ce8a9099 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in do_task_dead
2024/08/22 21:35 linux-next 6a7917c89f21 295a4b50 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in do_task_dead
2024/08/22 19:57 linux-next 6a7917c89f21 295a4b50 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in do_task_dead
2024/08/22 10:43 linux-next 6a7917c89f21 ca02180f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in do_task_dead
2024/08/22 09:03 linux-next 6a7917c89f21 ca02180f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in do_task_dead
2024/08/22 04:37 linux-next eb8c5ca373cb ca02180f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in do_task_dead
2024/08/22 04:29 linux-next eb8c5ca373cb ca02180f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in do_task_dead
2024/08/21 18:24 linux-next eb8c5ca373cb db5852f9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in do_task_dead
2024/08/21 17:30 linux-next eb8c5ca373cb db5852f9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in do_task_dead
2024/08/20 08:33 linux-next bb1b0acdcd66 9f0ab3fb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in do_task_dead
* Struck through repros no longer work on HEAD.