BUG: soft lockup in corrupted

Status: upstream: reported C repro on 2021/04/04 06:30
Reported-by: syzbot+2a71de52f2f0ac18414c@syzkaller.appspotmail.com
First crash: 1948d, last: 1465d
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Similar bugs (17)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-5-15 BUG: soft lockup in corrupted origin:upstream 1 syz, C error 33 689d 845d 0/2 upstream: reported C repro on 2024/04/11 09:01
upstream BUG: workqueue lockup (5) prio:low wireguard arm 1 syz, C done 17150 50m 2394d 0/29 upstream: reported C repro on 2020/01/14 22:04
linux-4.19 BUG: soft lockup in corrupted 1 syz, C error 3 1494d 1682d 0/1 upstream: reported C repro on 2021/12/26 20:46
linux-6.1 INFO: rcu detected stall in corrupted origin:upstream missing-backport 1 syz, C inconclusive 4053 1d20h 1240d 0/3 upstream: reported C repro on 2023/03/13 04:03
upstream INFO: task hung in inet_rtm_newaddr prio:normal net 1 syz, C done 157 1d03h 586d 0/29 upstream: reported C repro on 2024/12/26 09:45
upstream INFO: task hung in exit_aio (4) fs 1 6 599d 665d 0/29 auto-obsoleted due to no activity on 2025/03/13 05:51
upstream INFO: task hung in nsim_destroy (4) prio:high net 1 syz, C error error 447 16d 795d 0/29 upstream: reported C repro on 2024/05/31 11:16
upstream INFO: task hung in hub_port_init (3) prio:low usb 1 syz, C error 1151 5d00h 1225d 0/29 upstream: reported C repro on 2023/03/28 12:23
upstream INFO: task hung in reg_process_self_managed_hints prio:high wireless 1 syz, C done 1284 5h06m 1079d 0/29 upstream: reported C repro on 2023/08/21 16:36
linux-6.6 INFO: rcu detected stall in corrupted origin:lts-only 1 syz, C done 118 30d 407d 0/2 upstream: reported C repro on 2025/06/23 09:19
upstream INFO: rcu detected stall in corrupted (4) prio:low tipc 1 syz, C done inconclusive 832 8d06h 2160d 0/29 upstream: reported C repro on 2020/09/04 18:49
upstream INFO: task hung in reg_check_chans_work (7) prio:normal wireless 1 syz, C error 1071 14h52m 680d 0/29 upstream: reported C repro on 2024/09/23 08:39
android-6-12 INFO: rcu detected stall in corrupted origin:lts 1 syz 2 162d 283d 0/1 auto-obsoleted due to no activity on 2026/05/24 04:58
upstream INFO: task hung in linkwatch_event (4) prio:low net 1 syz, C done 3660 21m 738d 0/29 upstream: reported C repro on 2024/07/27 06:21
linux-4.19 INFO: rcu detected stall in corrupted 1 syz, C error 2 1657d 2364d 0/1 upstream: reported C repro on 2020/02/13 05:06
upstream INFO: task hung in uevent_show (2) kernel 1 syz, C inconclusive 8325 395d 633d 29/29 fixed on 2025/07/17 21:22
linux-5.15 INFO: rcu detected stall in corrupted origin:lts-only 1 syz, C error 151 2d22h 1016d 0/3 upstream: reported C repro on 2023/10/23 02:41
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2023/03/03 03:32 0m retest repro linux-4.14.y error
2023/03/03 01:32 0m retest repro linux-4.14.y error
2023/03/03 00:32 0m retest repro linux-4.14.y error
2023/03/02 23:32 0m retest repro linux-4.14.y error
2023/03/02 22:32 14m retest repro linux-4.14.y report log
2023/03/02 21:32 13m retest repro linux-4.14.y report log
2023/03/02 20:32 11m retest repro linux-4.14.y report log
2023/03/02 19:32 13m retest repro linux-4.14.y report log
2023/03/02 18:32 9m retest repro linux-4.14.y report log
2023/03/02 17:32 19m retest repro linux-4.14.y report log
▶ ▼ Fix bisection attempts (10)
Created Duration User Patch Repo Result
2022/05/01 11:56 13m bisect fix linux-4.14.y error job log
2022/02/19 23:10 26m bisect fix linux-4.14.y OK (0) job log log
2022/01/10 16:30 25m bisect fix linux-4.14.y OK (0) job log log
2021/12/11 06:16 27m bisect fix linux-4.14.y OK (0) job log log
2021/11/11 05:54 22m bisect fix linux-4.14.y OK (0) job log log
2021/10/04 06:14 24m bisect fix linux-4.14.y OK (0) job log log
2021/09/04 05:47 26m bisect fix linux-4.14.y OK (0) job log log
2021/08/05 05:20 26m bisect fix linux-4.14.y OK (0) job log log
2021/07/06 04:59 21m bisect fix linux-4.14.y OK (0) job log log
2021/05/20 03:33 23m bisect fix linux-4.14.y OK (0) job log log

Sample crash report:
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor197:8348]
Modules linked in:
irq event stamp: 12326
hardirqs last  enabled at (12325): [<ffffffff812307db>] kvm_wait arch/x86/kernel/kvm.c:600 [inline]
hardirqs last  enabled at (12325): [<ffffffff812307db>] kvm_wait+0x14b/0x240 arch/x86/kernel/kvm.c:580
hardirqs last disabled at (12326): [<ffffffff874018ae>] apic_timer_interrupt+0x8e/0xa0 arch/x86/entry/entry_64.S:793
softirqs last  enabled at (1658): [<ffffffff8760068b>] __do_softirq+0x68b/0x9ff kernel/softirq.c:314
softirqs last disabled at (1215): [<ffffffff81321cf3>] invoke_softirq kernel/softirq.c:368 [inline]
softirqs last disabled at (1215): [<ffffffff81321cf3>] irq_exit+0x193/0x240 kernel/softirq.c:409
CPU: 0 PID: 8348 Comm: syz-executor197 Not tainted 4.14.290-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
task: ffff8880ac184140 task.stack: ffff8880af6c8000
RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61
RSP: 0018:ffff8880af6cfb68 EFLAGS: 000002c6 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff11e1344 RBX: ffffffff89dd846c RCX: 1ffff1101583094c
RDX: dffffc0000000000 RSI: ffff8880ac184a40 RDI: ffff8880ac1849c4
RBP: 0000000000000003 R08: 0000000000000001 R09: 0000000000000000
watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor197:8347]
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000286
R13: dffffc0000000000 R14: ffffffff89dd846d R15: ffffed10174869f8
Modules linked in:
FS:  0000555557520300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
irq event stamp: 39208
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
hardirqs last  enabled at (39207): [<ffffffff87400976>] restore_regs_and_return_to_kernel+0x0/0x2a
CR2: 00007f2d6d6a36c8 CR3: 0000000095b40000 CR4: 00000000003406f0
hardirqs last disabled at (39208): [<ffffffff874018ae>] apic_timer_interrupt+0x8e/0xa0 arch/x86/entry/entry_64.S:793
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
softirqs last  enabled at (39206): [<ffffffff8760068b>] __do_softirq+0x68b/0x9ff kernel/softirq.c:314
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
softirqs last disabled at (39195): [<ffffffff81321cf3>] invoke_softirq kernel/softirq.c:368 [inline]
softirqs last disabled at (39195): [<ffffffff81321cf3>] irq_exit+0x193/0x240 kernel/softirq.c:409
Call Trace:
CPU: 1 PID: 8347 Comm: syz-executor197 Not tainted 4.14.290-syzkaller #0
 arch_safe_halt arch/x86/include/asm/paravirt.h:94 [inline]
 kvm_wait arch/x86/kernel/kvm.c:600 [inline]
 kvm_wait+0x179/0x240 arch/x86/kernel/kvm.c:580
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
 pv_wait arch/x86/include/asm/paravirt.h:679 [inline]
 pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:447 [inline]
 __pv_queued_spin_lock_slowpath+0x722/0x910 kernel/locking/qspinlock.c:465
task: ffff888093c9a100 task.stack: ffff8880aef70000
RIP: 0010:__read_once_size include/linux/compiler.h:185 [inline]
RIP: 0010:atomic_read arch/x86/include/asm/atomic.h:27 [inline]
RIP: 0010:queued_write_lock_slowpath+0xcb/0x1d0 kernel/locking/qrwlock.c:139
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:669 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:52 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:90 [inline]
 queued_read_lock_slowpath+0x150/0x190 kernel/locking/qrwlock.c:90
RSP: 0018:ffff8880aef77d10 EFLAGS: 00000206
 hci_send_to_channel+0x3c/0x200 net/bluetooth/hci_sock.c:272
 ORIG_RAX: ffffffffffffff10
 hci_send_monitor_ctrl_event+0x3dd/0x500 net/bluetooth/hci_sock.c:402
RAX: 0000000000000101 RBX: ffffffff89dd8468 RCX: 00000000000017e2
 mgmt_send_event+0x2b3/0x330 net/bluetooth/mgmt_util.c:86
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffff89dd8468
 mgmt_index_event net/bluetooth/mgmt.c:256 [inline]
 mgmt_index_added+0x1d5/0x210 net/bluetooth/mgmt.c:6565
RBP: ffffffff89dd846c R08: ffffffff8b9aca10 R09: 000000000004057d
R10: ffff888093c9a9d8 R11: ffff888093c9a100 R12: 0000000000000003
 hci_sock_release+0x3d7/0x4c0 net/bluetooth/hci_sock.c:871
R13: fffffbfff13bb08d R14: 00000000000000ff R15: ffff8880b04c7d50
 __sock_release+0xcd/0x2b0 net/socket.c:602
FS:  0000555557520300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 sock_close+0x15/0x20 net/socket.c:1139
CR2: 0000555557520608 CR3: 000000009e7ac000 CR4: 00000000003406e0
 __fput+0x25f/0x7a0 fs/file_table.c:210
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
 task_work_run+0x11f/0x190 kernel/task_work.c:113
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
 tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164
Call Trace:
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
 do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
 queued_write_lock include/asm-generic/qrwlock.h:134 [inline]
 do_raw_write_lock+0xc2/0x1d0 kernel/locking/spinlock_debug.c:203
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
 bt_sock_unlink+0x1d/0x170 net/bluetooth/af_bluetooth.c:151
RIP: 0033:0x7f2d6d60f1fb
 hci_sock_release+0xc1/0x4c0 net/bluetooth/hci_sock.c:855
RSP: 002b:00007fff792e4f30 EFLAGS: 00000293
 __sock_release+0xcd/0x2b0 net/socket.c:602
 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00007f2d6d60f1fb
RDX: ffffffffffffffb8 RSI: 00000000200000c0 RDI: 0000000000000004
 sock_close+0x15/0x20 net/socket.c:1139
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000150
 __fput+0x25f/0x7a0 fs/file_table.c:210
R10: 0000000000000000 R11: 0000000000000293 R12: 000000000001007a
 task_work_run+0x11f/0x190 kernel/task_work.c:113
R13: 00007fff792e4fc0 R14: 00007fff792e4fb0 R15: 00007fff792e4f68
 tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164
Code: 
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
 do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
0b 
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
5b 
RIP: 0033:0x7f2d6d60f1fb
fa 
RSP: 002b:00007fff792e4f30 EFLAGS: 00000293
e9 
 ORIG_RAX: 0000000000000003
4f 
RAX: 0000000000000000 RBX: 0000000000000006 RCX: 00007f2d6d60f1fb
ff 
RDX: ffffffffffffffb8 RSI: 00000000200000c0 RDI: 0000000000000005
ff 
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000150
ff 
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000010080
48 
R13: 00007fff792e4fc0 R14: 00007fff792e4fb0 R15: 00007fff792e4f68
89 
Code: 
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49 
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41 
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49 
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c1 
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90 
03 
90 
41 
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83 
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34 
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90 
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63 
0f 
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b6 
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45 
c3 
00 
90 
41 
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38 
41 
c4 
55 
7c 
41 
08 
84

Crashes (12):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/07/31 17:33 linux-4.14.y b641242202ed fef302b1 .config console log report syz C ci2-linux-4-14 BUG: soft lockup in corrupted
2022/07/13 01:15 linux-4.14.y 424a46ea058e d91dd8ea .config console log report syz C ci2-linux-4-14 BUG: soft lockup in corrupted
2022/04/01 11:56 linux-4.14.y af1af6ebca0e 68fc921a .config console log report syz C ci2-linux-4-14 BUG: soft lockup in corrupted
2022/03/12 03:20 linux-4.14.y af48f51cb593 9e8eaa75 .config console log report syz C ci2-linux-4-14 BUG: soft lockup in corrupted
2022/02/27 19:43 linux-4.14.y fa33f9094f36 45a13a73 .config console log report syz C ci2-linux-4-14 BUG: soft lockup in corrupted
2022/01/20 23:08 linux-4.14.y 4ba8e26127c3 b838eb76 .config console log report syz C ci2-linux-4-14 BUG: soft lockup in corrupted
2021/12/11 16:30 linux-4.14.y c01d4d1b885d 49ca1f59 .config console log report syz C ci2-linux-4-14 BUG: soft lockup in corrupted
2021/10/12 05:54 linux-4.14.y 756db2ba8bde 838e7e2c .config console log report syz C ci2-linux-4-14 BUG: soft lockup in corrupted
2021/06/06 04:59 linux-4.14.y a6b2dae3ee3a 500c2339 .config console log report syz C ci2-linux-4-14 BUG: soft lockup in corrupted
2021/06/04 08:30 linux-4.14.y a6b2dae3ee3a 0740de69 .config console log report syz C ci2-linux-4-14 BUG: soft lockup in corrupted
2021/04/20 03:32 linux-4.14.y cf256fbcbe34 4285c989 .config console log report syz C ci2-linux-4-14 BUG: soft lockup in corrupted
2021/04/04 06:29 linux-4.14.y bd634aa64163 6a81331a .config console log report syz C ci2-linux-4-14 BUG: soft lockup in corrupted
* Struck through repros no longer work on HEAD.