syzbot


general protection fault in dequeue_task

Status: closed as invalid on 2024/09/13 10:29
Subsystems: kernel
[Documentation on labels]
First crash: 183d, last: 175d

Sample crash report:
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.11.0-rc5-next-20240827-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:rb_set_parent_color include/linux/rbtree_augmented.h:191 [inline]
RIP: 0010:____rb_erase_color lib/rbtree.c:255 [inline]
RIP: 0010:rb_erase+0x530/0xe70 lib/rbtree.c:445
Code: 00 00 74 08 4c 89 ef e8 6e 58 44 f6 4d 89 7d 00 49 8d 6f 01 48 8b 5c 24 08 48 89 d8 48 c1 e8 03 49 bd 00 00 00 00 00 fc ff df <42> 80 3c 28 00 74 08 48 89 df e8 41 58 44 f6 48 89 2b 4c 89 fd 48
RSP: 0018:ffffc900001a7900 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: dffffc0000000000 RSI: ffff8880b903f8e0 RDI: ffff88807c5bdcc8
RBP: ffff88801f30dcc1 R08: ffffffff901c3647 R09: 1ffffffff20386c8
R10: dffffc0000000000 R11: ffffffff816786e0 R12: ffff88801f30dcc0
R13: dffffc0000000000 R14: 1ffff11003e61b98 R15: ffff88801f30dcc0
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f15a233ef98 CR3: 000000006658a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 sched_core_dequeue kernel/sched/core.c:283 [inline]
 dequeue_task+0x34d/0x550 kernel/sched/core.c:2031
 deactivate_task kernel/sched/core.c:2074 [inline]
 try_steal_cookie kernel/sched/core.c:6306 [inline]
 steal_cookie_task kernel/sched/core.c:6333 [inline]
 sched_core_balance+0xc6f/0x1180 kernel/sched/core.c:6353
 do_balance_callbacks kernel/sched/core.c:4963 [inline]
 __balance_callbacks+0x188/0x280 kernel/sched/core.c:5017
 finish_lock_switch kernel/sched/core.c:5064 [inline]
 finish_task_switch+0x1d3/0x870 kernel/sched/core.c:5183
 context_switch kernel/sched/core.c:5314 [inline]
 __schedule+0x1852/0x4b30 kernel/sched/core.c:6677
 schedule_idle+0x53/0x90 kernel/sched/core.c:6795
 do_idle+0x56a/0x5d0 kernel/sched/idle.c:354
 cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:424
 start_secondary+0x102/0x110 arch/x86/kernel/smpboot.c:313
 common_startup_64+0x13e/0x147
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:rb_set_parent_color include/linux/rbtree_augmented.h:191 [inline]
RIP: 0010:____rb_erase_color lib/rbtree.c:255 [inline]
RIP: 0010:rb_erase+0x530/0xe70 lib/rbtree.c:445
Code: 00 00 74 08 4c 89 ef e8 6e 58 44 f6 4d 89 7d 00 49 8d 6f 01 48 8b 5c 24 08 48 89 d8 48 c1 e8 03 49 bd 00 00 00 00 00 fc ff df <42> 80 3c 28 00 74 08 48 89 df e8 41 58 44 f6 48 89 2b 4c 89 fd 48
RSP: 0018:ffffc900001a7900 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: dffffc0000000000 RSI: ffff8880b903f8e0 RDI: ffff88807c5bdcc8
RBP: ffff88801f30dcc1 R08: ffffffff901c3647 R09: 1ffffffff20386c8
R10: dffffc0000000000 R11: ffffffff816786e0 R12: ffff88801f30dcc0
R13: dffffc0000000000 R14: 1ffff11003e61b98 R15: ffff88801f30dcc0
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f15a233ef98 CR3: 000000006658a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	74 08                	je     0xc
   4:	4c 89 ef             	mov    %r13,%rdi
   7:	e8 6e 58 44 f6       	call   0xf644587a
   c:	4d 89 7d 00          	mov    %r15,0x0(%r13)
  10:	49 8d 6f 01          	lea    0x1(%r15),%rbp
  14:	48 8b 5c 24 08       	mov    0x8(%rsp),%rbx
  19:	48 89 d8             	mov    %rbx,%rax
  1c:	48 c1 e8 03          	shr    $0x3,%rax
  20:	49 bd 00 00 00 00 00 	movabs $0xdffffc0000000000,%r13
  27:	fc ff df
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 df             	mov    %rbx,%rdi
  34:	e8 41 58 44 f6       	call   0xf644587a
  39:	48 89 2b             	mov    %rbp,(%rbx)
  3c:	4c 89 fd             	mov    %r15,%rbp
  3f:	48                   	rex.W

Crashes (783):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/08/28 07:21 linux-next 6f923748057a 6c853ff9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/28 06:35 linux-next 6f923748057a 6c853ff9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/28 05:30 linux-next 6f923748057a 6c853ff9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/28 05:01 linux-next 6f923748057a 6c853ff9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/28 04:01 linux-next 6f923748057a 6c853ff9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/28 03:13 linux-next 6f923748057a 6c853ff9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/28 02:05 linux-next 6f923748057a 6c853ff9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/28 01:03 linux-next 6f923748057a 6c853ff9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/28 00:44 linux-next 6f923748057a 6c853ff9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/27 23:41 linux-next 6f923748057a 6c853ff9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/27 22:41 linux-next 6f923748057a 6c853ff9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/27 21:38 linux-next 6f923748057a 6c853ff9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/27 21:20 linux-next 6f923748057a 6c853ff9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/27 20:19 linux-next 6f923748057a 6c853ff9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/23 13:50 linux-next c79c85875f1a ce8a9099 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/23 13:38 linux-next c79c85875f1a ce8a9099 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/23 12:33 linux-next c79c85875f1a ce8a9099 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/23 12:12 linux-next c79c85875f1a ce8a9099 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/23 11:05 linux-next c79c85875f1a ce8a9099 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/23 10:14 linux-next c79c85875f1a ce8a9099 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/23 08:59 linux-next c79c85875f1a ce8a9099 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/23 08:40 linux-next c79c85875f1a ce8a9099 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/23 07:32 linux-next c79c85875f1a ce8a9099 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/23 06:24 linux-next c79c85875f1a ce8a9099 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/23 03:56 linux-next 6a7917c89f21 ce8a9099 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/23 02:01 linux-next 6a7917c89f21 295a4b50 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/23 01:29 linux-next 6a7917c89f21 295a4b50 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/23 00:11 linux-next 6a7917c89f21 295a4b50 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/23 00:10 linux-next 6a7917c89f21 295a4b50 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/22 23:07 linux-next 6a7917c89f21 295a4b50 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/22 22:33 linux-next 6a7917c89f21 295a4b50 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/22 21:19 linux-next 6a7917c89f21 295a4b50 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/22 20:48 linux-next 6a7917c89f21 295a4b50 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/22 19:46 linux-next 6a7917c89f21 295a4b50 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/22 19:13 linux-next 6a7917c89f21 295a4b50 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/22 18:10 linux-next 6a7917c89f21 295a4b50 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/22 17:13 linux-next 6a7917c89f21 295a4b50 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/22 16:09 linux-next 6a7917c89f21 295a4b50 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/22 15:07 linux-next 6a7917c89f21 295a4b50 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/22 12:51 linux-next 6a7917c89f21 ca02180f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/22 11:48 linux-next 6a7917c89f21 ca02180f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/22 11:09 linux-next 6a7917c89f21 ca02180f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/20 06:23 linux-next bb1b0acdcd66 9f0ab3fb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in dequeue_task
2024/08/22 02:25 linux-next eb8c5ca373cb ca02180f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root KASAN: slab-use-after-free Write in dequeue_task
2024/08/21 02:59 linux-next bb1b0acdcd66 9f0ab3fb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root KASAN: slab-use-after-free Read in dequeue_task
* Struck through repros no longer work on HEAD.