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BUG: soft lockup in __do_softirq

Status: auto-obsoleted due to no activity on 2024/11/02 12:24
Reported-by: syzbot+d265ed4cd2b9cc613e5f@syzkaller.appspotmail.com
First crash: 109d, last: 109d
▶ ▼ Similar bugs (5)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 BUG: soft lockup in __do_softirq syz error 3 1296d 1338d 0/1 upstream: reported syz repro on 2021/03/23 20:32
linux-6.1 INFO: rcu detected stall in __do_softirq 1 168d 168d 0/3 auto-obsoleted due to no activity on 2024/09/14 06:04
linux-5.15 INFO: rcu detected stall in __do_softirq 2 387d 406d 0/3 auto-obsoleted due to no activity on 2024/02/08 12:45
upstream INFO: rcu detected stall in __do_softirq (2) kernel 1 197d 197d 0/28 auto-obsoleted due to no activity on 2024/08/06 06:26
upstream INFO: rcu detected stall in __do_softirq net syz done 35 701d 1934d 0/28 auto-obsoleted due to no activity on 2023/04/21 04:43

Sample crash report:
 worker_thread+0xad5/0x12a0 kernel/workqueue.c:2472
 kthread+0x421/0x510 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </TASK>
watchdog: BUG: soft lockup - CPU#1 stuck for 226s! [kworker/u4:0:8]
Modules linked in:
CPU: 1 PID: 8 Comm: kworker/u4:0 Tainted: G        W         5.15.152-syzkaller-00143-g70e1a731d986 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:ffs arch/x86/include/asm/bitops.h:297 [inline]
RIP: 0010:__do_softirq+0x10e/0x5bf kernel/softirq.c:553
Code: a0 21 48 85 e8 83 3d bf ff 65 66 c7 05 09 6f e3 7a 00 00 48 c7 c7 a0 21 48 85 e8 6d 3d bf ff 65 89 1d ee 70 e2 7a fb 89 5d b8 <b8> ff ff ff ff 0f bc 45 b8 41 89 c4 41 ff c4 0f 85 c5 00 00 00 48
RSP: 0018:ffffc900001d0f48 EFLAGS: 00000282
RAX: 0000000000000001 RBX: 0000000000000080 RCX: ffff88810026a780
RDX: 1ffffffff0e98a08 RSI: ffffffff854821a0 RDI: ffffffff85a312a0
RBP: ffffc900001d0fc0 R08: ffffffff874c5040 R09: ffffffff874c5048
R10: ffffffff874c5058 R11: ffffffff874c5050 R12: ffff88810026a780
R13: 0000000000000000 R14: 0000000004208060 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffe8 CR3: 0000000006a0f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 invoke_softirq kernel/softirq.c:425 [inline]
 __irq_exit_rcu+0x50/0xf0 kernel/softirq.c:648
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:660
 sysvec_apic_timer_interrupt+0x9a/0xc0 arch/x86/kernel/apic/apic.c:1096
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline]
RIP: 0010:smp_call_function_many_cond+0x843/0x9b0 kernel/smp.c:969
Code: 45 8b 7d 00 44 89 fe 83 e6 01 31 ff e8 76 a8 0a 00 41 83 e7 01 49 bf 00 00 00 00 00 fc ff df 75 07 e8 b1 a4 0a 00 eb 38 f3 90 <42> 0f b6 04 3b 84 c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 95 a4
RSP: 0018:ffffc90000087880 EFLAGS: 00000293
RAX: ffffffff81659ddb RBX: 1ffff1103ee07af1 RCX: ffff88810026a780
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000087998 R08: ffffffff81659daa R09: ffffed103ee271d3
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: ffff8881f703d788 R14: ffff8881f7138e80 R15: dffffc0000000000
 on_each_cpu_cond_mask+0x40/0x80 kernel/smp.c:1135
 on_each_cpu include/linux/smp.h:71 [inline]
 text_poke_sync arch/x86/kernel/alternative.c:1201 [inline]
 text_poke_bp_batch+0x1c4/0x5d0 arch/x86/kernel/alternative.c:1392
 text_poke_flush arch/x86/kernel/alternative.c:1560 [inline]
 text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:1567
 arch_jump_label_transform_apply+0x15/0x30 arch/x86/kernel/jump_label.c:146
 __jump_label_update+0x36a/0x380 kernel/jump_label.c:459
 jump_label_update+0x3af/0x450 kernel/jump_label.c:830
 static_key_enable_cpuslocked+0x12f/0x250 kernel/jump_label.c:177
 static_key_enable+0x1a/0x30 kernel/jump_label.c:190
 toggle_allocation_gate+0xbf/0x460 mm/kfence/core.c:729
 process_one_work+0x6bb/0xc10 kernel/workqueue.c:2325
 worker_thread+0xad5/0x12a0 kernel/workqueue.c:2472
 kthread+0x421/0x510 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 14 Comm: rcu_preempt Tainted: G        W         5.15.152-syzkaller-00143-g70e1a731d986 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:native_halt arch/x86/include/asm/irqflags.h:57 [inline]
RIP: 0010:halt arch/x86/include/asm/irqflags.h:98 [inline]
RIP: 0010:kvm_wait+0x117/0x180 arch/x86/kernel/kvm.c:912
Code: 48 c1 e8 03 42 0f b6 04 20 84 c0 44 8b 74 24 1c 75 53 41 0f b6 45 00 44 38 f0 0f 85 63 ff ff ff 66 90 0f 00 2d 5a 02 13 04 f4 <e9> 54 ff ff ff fa 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 44 8b
RSP: 0018:ffffc90000007b60 EFLAGS: 00000046
RAX: 0000000000000003 RBX: 1ffff92000000f70 RCX: ffffffff8155068f
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff8881f7027900
RBP: ffffc90000007c10 R08: dffffc0000000000 R09: ffffed103ee04f21
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff8881f7027900 R14: 0000000000000003 R15: 1ffff92000000f74
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffe8 CR3: 0000000118feb000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 pv_wait arch/x86/include/asm/paravirt.h:597 [inline]
 pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
 __pv_queued_spin_lock_slowpath+0x6bc/0xc40 kernel/locking/qspinlock.c:508
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
 do_raw_spin_lock include/linux/spinlock.h:187 [inline]
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:129 [inline]
 _raw_spin_lock_irq+0x13a/0x1b0 kernel/locking/spinlock.c:170
 __run_timers+0x115/0xa10 kernel/time/timer.c:1725
 run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1756
 __do_softirq+0x26d/0x5bf kernel/softirq.c:565
 do_softirq+0xf6/0x150 kernel/softirq.c:452
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x75/0x80 kernel/softirq.c:379
 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:176 [inline]
 _raw_spin_unlock_bh+0x51/0x60 kernel/locking/spinlock.c:210
 __sock_map_delete net/core/sock_map.c:426 [inline]
 sock_map_delete_elem+0xcb/0x130 net/core/sock_map.c:448
 bpf_prog_2c29ac5cdc6b1842+0x3a/0xbf0
 bpf_dispatcher_nop_func include/linux/bpf.h:785 [inline]
 __bpf_prog_run include/linux/filter.h:625 [inline]
 bpf_prog_run include/linux/filter.h:632 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:1880 [inline]
 bpf_trace_run3+0x11e/0x250 kernel/trace/bpf_trace.c:1918
 __bpf_trace_timer_start+0x2b/0x40 include/trace/events/timer.h:52
 trace_timer_start include/trace/events/timer.h:52 [inline]
 enqueue_timer+0x351/0x4c0 kernel/time/timer.c:592
 internal_add_timer kernel/time/timer.c:617 [inline]
 __mod_timer+0x8d3/0xcf0 kernel/time/timer.c:1068
 schedule_timeout+0x187/0x370 kernel/time/timer.c:1889
 rcu_gp_fqs_loop+0x2af/0xf80 kernel/rcu/tree.c:1972
 rcu_gp_kthread+0xa4/0x350 kernel/rcu/tree.c:2145
 kthread+0x421/0x510 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/08/04 12:17 android13-5.15-lts 70e1a731d986 1786a2a8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: soft lockup in __do_softirq
* Struck through repros no longer work on HEAD.