syzbot


WARNING in switch_mm_irqs_off (2)

Status: upstream: reported on 2024/03/30 01:29
Subsystems: kernel
[Documentation on labels]
Reported-by: syzbot+6096471e27db19305af0@syzkaller.appspotmail.com
First crash: 21d, last: 12d
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [kernel?] WARNING in switch_mm_irqs_off (2) 0 (1) 2024/03/30 01:29
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in switch_mm_irqs_off kernel 1 2103d 2102d 0/26 auto-closed as invalid on 2019/02/22 10:29

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 44 at arch/x86/mm/tlb.c:515 switch_mm_irqs_off+0x890/0xbc0 arch/x86/mm/tlb.c:515
Modules linked in:
CPU: 0 PID: 44 Comm: kworker/u32:2 Not tainted 6.9.0-rc2-syzkaller-00080-gc85af715cac0 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: bat_events batadv_nc_worker
RIP: 0010:switch_mm_irqs_off+0x890/0xbc0 arch/x86/mm/tlb.c:515
Code: ff 44 8d 6b 02 48 63 d3 49 8d 8e 18 06 00 00 4d 63 ed 49 c1 e5 04 4d 8d 8d 80 d8 03 00 49 81 c5 88 d8 03 00 e9 75 fd ff ff 90 <0f> 0b 90 e9 e3 f7 ff ff 90 0f 0b 90 e8 df f5 ff ff e9 20 f8 ff ff
RSP: 0018:ffffc900009c77c0 EFLAGS: 00010202
RAX: 0000000000000296 RBX: ffff88801a440000 RCX: ffff8880234d6880
RDX: 1ffff1100469adea RSI: ffffffff8b8f5260 RDI: ffffffff8b8f52a0
RBP: ffff8880234d6880 R08: 0000000000000001 R09: ffffed1003488734
R10: ffff88801a4439a7 R11: 00000000000002bb R12: ffff88806b03f501
R13: ffff88804219c880 R14: ffff8880234d6880 R15: ffff88806b03ea40
FS:  0000000000000000(0000) GS:ffff88806b000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f860f5025a3 CR3: 0000000024398000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5393 [inline]
 __schedule+0xd2b/0x5d00 kernel/sched/core.c:6746
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7068
 irqentry_exit+0x36/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x1f2/0x560 kernel/locking/lockdep.c:5722
Code: c1 05 aa ed 96 7e 83 f8 01 0f 85 ea 02 00 00 9c 58 f6 c4 02 0f 85 d5 02 00 00 48 85 ed 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc900009c7aa8 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92000138f57 RCX: 0000000057cba33e
RDX: 0000000000000001 RSI: ffffffff8b2cce40 RDI: ffffffff8b8f52e0
RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff2841830
R10: ffffffff9420c187 R11: 0000000000000002 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8dbb1560 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
 rcu_read_lock include/linux/rcupdate.h:781 [inline]
 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
 batadv_nc_worker+0x16e/0x10f0 net/batman-adv/network-coding.c:719
 process_one_work+0x9a9/0x1ac0 kernel/workqueue.c:3254
 process_scheduled_works kernel/workqueue.c:3335 [inline]
 worker_thread+0x6c8/0xf70 kernel/workqueue.c:3416
 kthread+0x2c1/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243
 </TASK>
----------------
Code disassembly (best guess):
   0:	c1 05 aa ed 96 7e 83 	roll   $0x83,0x7e96edaa(%rip)        # 0x7e96edb1
   7:	f8                   	clc
   8:	01 0f                	add    %ecx,(%rdi)
   a:	85 ea                	test   %ebp,%edx
   c:	02 00                	add    (%rax),%al
   e:	00 9c 58 f6 c4 02 0f 	add    %bl,0xf02c4f6(%rax,%rbx,2)
  15:	85 d5                	test   %edx,%ebp
  17:	02 00                	add    (%rax),%al
  19:	00 48 85             	add    %cl,-0x7b(%rax)
  1c:	ed                   	in     (%dx),%eax
  1d:	74 01                	je     0x20
  1f:	fb                   	sti
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df
* 2a:	48 01 c3             	add    %rax,%rbx <-- trapping instruction
  2d:	48 c7 03 00 00 00 00 	movq   $0x0,(%rbx)
  34:	48 c7 43 08 00 00 00 	movq   $0x0,0x8(%rbx)
  3b:	00
  3c:	48                   	rex.W
  3d:	8b                   	.byte 0x8b
  3e:	84                   	.byte 0x84
  3f:	24                   	.byte 0x24

Crashes (43):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/04 15:57 upstream c85af715cac0 0ee3535e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in switch_mm_irqs_off
2024/04/04 13:31 upstream c85af715cac0 0ee3535e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in switch_mm_irqs_off
2024/04/04 10:29 upstream c85af715cac0 51c4dcff .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in switch_mm_irqs_off
2024/04/03 21:52 upstream 3e92c1e6cd87 9d2a90af .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in switch_mm_irqs_off
2024/04/03 05:45 upstream b1e6ec0a0fd0 7925100d .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in switch_mm_irqs_off
2024/04/02 23:31 upstream b1e6ec0a0fd0 7925100d .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in switch_mm_irqs_off
2024/04/01 23:38 upstream 026e680b0a08 6baf5069 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in switch_mm_irqs_off
2024/04/01 18:55 upstream 39cd87c4eb2b 6baf5069 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in switch_mm_irqs_off
2024/04/01 00:06 upstream 18737353cca0 6baf5069 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in switch_mm_irqs_off
2024/03/31 23:58 upstream 18737353cca0 6baf5069 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in switch_mm_irqs_off
2024/03/29 20:48 upstream 4535e1a4174c c52bcb23 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in switch_mm_irqs_off
2024/03/29 08:43 upstream 317c7bc0ef03 c52bcb23 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in switch_mm_irqs_off
2024/03/29 07:02 upstream 317c7bc0ef03 c52bcb23 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in switch_mm_irqs_off
2024/03/28 22:59 upstream 8d025e2092e2 ceaf7ddd .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in switch_mm_irqs_off
2024/04/04 19:30 upstream c85af715cac0 0ee3535e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
2024/04/04 10:36 upstream c85af715cac0 51c4dcff .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
2024/04/04 07:42 upstream c85af715cac0 51c4dcff .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
2024/04/04 07:40 upstream c85af715cac0 51c4dcff .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
2024/04/04 07:25 upstream c85af715cac0 51c4dcff .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
2024/04/04 07:16 upstream c85af715cac0 51c4dcff .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
2024/04/04 04:32 upstream c85af715cac0 51c4dcff .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
2024/04/04 00:11 upstream c85af715cac0 51c4dcff .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
2024/04/04 00:04 upstream c85af715cac0 51c4dcff .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
2024/04/03 21:49 upstream 3e92c1e6cd87 9d2a90af .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
2024/04/03 19:37 upstream 3e92c1e6cd87 9d2a90af .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
2024/04/03 07:38 upstream b1e6ec0a0fd0 7925100d .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
2024/04/03 07:28 upstream b1e6ec0a0fd0 7925100d .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
2024/04/02 19:04 upstream 026e680b0a08 f861ecca .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
2024/04/01 23:41 upstream 026e680b0a08 6baf5069 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
2024/04/01 21:57 upstream 39cd87c4eb2b 6baf5069 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
2024/04/01 18:55 upstream 39cd87c4eb2b 6baf5069 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
2024/04/01 04:57 upstream 39cd87c4eb2b 6baf5069 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
2024/03/31 03:46 upstream 712e14250dd2 6baf5069 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
2024/03/30 23:54 upstream 486291a0e624 6baf5069 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
2024/03/30 15:23 upstream 486291a0e624 6baf5069 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
2024/03/29 20:59 upstream 4535e1a4174c c52bcb23 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
2024/03/29 08:42 upstream 317c7bc0ef03 c52bcb23 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
2024/03/28 22:48 upstream 8d025e2092e2 ceaf7ddd .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
2024/03/26 13:08 upstream 928a87efa423 bcd9b39f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
2024/03/26 09:02 upstream 928a87efa423 bcd9b39f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
2024/03/26 07:20 upstream 928a87efa423 bcd9b39f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
2024/03/26 01:21 upstream 928a87efa423 bcd9b39f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in switch_mm_irqs_off
* Struck through repros no longer work on HEAD.