watchdog: BUG: soft lockup - CPU#1 stuck for 246s! [syz.1.1124:4431]
Modules linked in:
CPU: 1 PID: 4431 Comm: syz.1.1124 Not tainted 6.1.141-syzkaller-00036-g7011769d221c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:csd_lock_wait kernel/smp.c:453 [inline]
RIP: 0010:smp_call_function_many_cond+0x872/0x960 kernel/smp.c:998
Code: 41 8b 1f 89 de 83 e6 01 31 ff e8 39 66 09 00 83 e3 01 48 bb 00 00 00 00 00 fc ff df 75 0a e8 05 62 09 00 e9 38 ff ff ff f3 90 <41> 0f b6 44 1d 00 84 c0 75 14 41 f7 07 01 00 00 00 0f 84 1a ff ff
RSP: 0018:ffffc9000110f4a0 EFLAGS: 00000246
RAX: ffffffff8166958e RBX: dffffc0000000000 RCX: 0000000000080000
RDX: ffffc90001e9c000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc9000110f5d8 R08: dffffc0000000000 R09: ffffed103ee27213
R10: 0000000000000000 R11: ffffffff81341b30 R12: 1ffff1103ee27210
R13: 1ffff1103ee07ab9 R14: 0000000000000000 R15: ffff8881f703d5c8
FS:  00007f4a71a936c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d817ff8 CR3: 0000000133cf8000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 on_each_cpu_cond_mask+0x43/0x80 kernel/smp.c:1166
 on_each_cpu include/linux/smp.h:71 [inline]
 text_poke_sync arch/x86/kernel/alternative.c:1574 [inline]
 text_poke_bp_batch+0x1cc/0x580 arch/x86/kernel/alternative.c:1774
 text_poke_bp+0xc8/0x140 arch/x86/kernel/alternative.c:2011
 __static_call_transform+0x318/0x500 arch/x86/kernel/static_call.c:109
 arch_static_call_transform+0xd3/0x280 arch/x86/kernel/static_call.c:161
 __static_call_update+0xef/0x5c0 kernel/static_call_inline.c:136
 tracepoint_update_call kernel/tracepoint.c:317 [inline]
 tracepoint_add_func+0x650/0x900 kernel/tracepoint.c:365
 tracepoint_probe_register_prio_may_exist+0x5b/0x90 kernel/tracepoint.c:482
 tracepoint_probe_register_may_exist include/linux/tracepoint.h:52 [inline]
 __bpf_probe_register kernel/trace/bpf_trace.c:2348 [inline]
 bpf_probe_register+0x13f/0x1d0 kernel/trace/bpf_trace.c:2354
 bpf_raw_tp_link_attach+0x3d1/0x550 kernel/bpf/syscall.c:3367
 bpf_raw_tracepoint_open+0x258/0x480 kernel/bpf/syscall.c:3394
 __sys_bpf+0x4d1/0x780 kernel/bpf/syscall.c:5044
 __do_sys_bpf kernel/bpf/syscall.c:5106 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5104 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5104
 x64_sys_call+0x488/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:322
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f4a70b8e929
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4a71a93038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f4a70db6080 RCX: 00007f4a70b8e929
RDX: 0000000000000010 RSI: 0000200000000400 RDI: 0000000000000011
RBP: 00007f4a70c10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f4a70db6080 R15: 00007ffc900bee58
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4428 Comm: syz.4.1122 Not tainted 6.1.141-syzkaller-00036-g7011769d221c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
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+0xcc/0x140 arch/x86/kernel/kvm.c:1058
Code: 20 f6 44 24 21 02 75 24 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 48 0f b6 07 40 38 f0 75 a6 66 90 0f 00 2d b5 ae 13 04 f4 <eb> 9a fa 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 3f 0f b6 07
RSP: 0018:ffffc90000007100 EFLAGS: 00000046
RAX: 0000000000000003 RBX: ffff8881f7027c40 RCX: ffffffff84f06582
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff8881f7027c40
RBP: ffffc90000007190 R08: dffffc0000000000 R09: ffffed103ee04f89
R10: ffffed103ee04f89 R11: 1ffff1103ee04f88 R12: 1ffff1103ee00001
R13: ffff8881f7038c94 R14: dffffc0000000000 R15: 1ffff92000000e20
FS:  00007f9101a316c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000010000 CR3: 0000000133885000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 pv_wait arch/x86/include/asm/paravirt.h:603 [inline]
 pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
 __pv_queued_spin_lock_slowpath+0x690/0xc40 kernel/locking/qspinlock.c:511
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline]
 queued_spin_lock_slowpath+0x47/0x50 arch/x86/include/asm/qspinlock.h:51
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock include/linux/spinlock.h:187 [inline]
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
 _raw_spin_lock_irqsave+0x108/0x110 kernel/locking/spinlock.c:162
 lock_timer_base+0x127/0x270 kernel/time/timer.c:1005
 __mod_timer+0x10a/0xb30 kernel/time/timer.c:1078
 add_timer+0x68/0x80 kernel/time/timer.c:1218
 __queue_delayed_work+0x173/0x200 kernel/workqueue.c:1686
 queue_delayed_work_on+0xdb/0x150 kernel/workqueue.c:1711
 queue_delayed_work include/linux/workqueue.h:525 [inline]
 schedule_delayed_monitor_work kernel/rcu/tree.c:3216 [inline]
 kvfree_call_rcu+0x436/0x7a0 kernel/rcu/tree.c:3472
 trie_delete_elem+0x572/0x720 kernel/bpf/lpm_trie.c:545
 bpf_prog_2c29ac5cdc6b1842+0x3a/0x3e
 bpf_dispatcher_nop_func include/linux/bpf.h:987 [inline]
 __bpf_prog_run include/linux/filter.h:603 [inline]
 bpf_prog_run include/linux/filter.h:610 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2283 [inline]
 bpf_trace_run3+0x113/0x270 kernel/trace/bpf_trace.c:2323
 __bpf_trace_timer_start+0x2b/0x40 include/trace/events/timer.h:53
 trace_timer_start include/trace/events/timer.h:53 [inline]
 enqueue_timer+0x337/0x480 kernel/time/timer.c:615
 __mod_timer+0x79f/0xb30 kernel/time/timer.c:-1
 add_timer+0x68/0x80 kernel/time/timer.c:1218
 __queue_delayed_work+0x173/0x200 kernel/workqueue.c:1686
 queue_delayed_work_on+0xdb/0x150 kernel/workqueue.c:1711
 queue_delayed_work include/linux/workqueue.h:525 [inline]
 srcu_funnel_gp_start kernel/rcu/srcutree.c:951 [inline]
 srcu_gp_start_if_needed+0xbd8/0xfe0 kernel/rcu/srcutree.c:1151
 __call_srcu kernel/rcu/srcutree.c:1196 [inline]
 call_srcu+0x49/0x50 kernel/rcu/srcutree.c:1219
 rcu_free_old_probes+0x23/0x30 kernel/tracepoint.c:121
 rcu_do_batch+0x515/0xb90 kernel/rcu/tree.c:2297
 rcu_core+0x5a5/0xe70 kernel/rcu/tree.c:2557
 rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2574
 handle_softirqs+0x1d7/0x600 kernel/softirq.c:642
 __do_softirq kernel/softirq.c:680 [inline]
 invoke_softirq kernel/softirq.c:497 [inline]
 __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:729
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:741
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:console_emit_next_record+0x9e3/0xbc0 kernel/printk/printk.c:2797
Code: de 48 81 e6 00 02 00 00 31 ff e8 28 49 19 00 48 81 e3 00 02 00 00 75 07 e8 5a 44 19 00 eb 06 e8 53 44 19 00 fb 0f b6 5c 24 07 <48> c7 84 24 80 00 00 00 0e 36 e0 45 4b c7 04 2e 00 00 00 00 4b c7
RSP: 0018:ffffc9000dd8f740 EFLAGS: 00000293
RAX: ffffffff8156b31d RBX: 0000000000000001 RCX: ffff88810bcfbcc0
RDX: 0000000000000000 RSI: 0000000000000200 RDI: 0000000000000000
RBP: ffffc9000dd8f950 R08: 0000000000000004 R09: 0000000000000003
R10: fffff52001bb1ed8 R11: 1ffff92001bb1ed8 R12: ffffc9000dd8f99f
R13: dffffc0000000000 R14: 1ffff92001bb1ef8 R15: 000000000000008d
 console_flush_all kernel/printk/printk.c:-1 [inline]
 console_unlock+0x23d/0x550 kernel/printk/printk.c:2917
 vprintk_emit+0x14d/0x410 kernel/printk/printk.c:2308
 vprintk_default+0x26/0x30 kernel/printk/printk.c:2323
 vprintk+0x7a/0x80 kernel/printk/printk_safe.c:45
 _printk+0xcc/0x118 kernel/printk/printk.c:2333
 fail_dump lib/fault-inject.c:45 [inline]
 should_fail_ex+0x3ad/0x520 lib/fault-inject.c:147
 __should_failslab+0xac/0xf0 mm/failslab.c:44
 should_failslab+0x9/0x20 mm/slab_common.c:1446
 slab_pre_alloc_hook+0x30/0x1e0 mm/slab.h:743
 slab_alloc_node mm/slub.c:3341 [inline]
 slab_alloc mm/slub.c:3431 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3438 [inline]
 kmem_cache_alloc_lru+0x49/0x280 mm/slub.c:3454
 alloc_inode_sb include/linux/fs.h:3263 [inline]
 sock_alloc_inode+0x28/0xc0 net/socket.c:304
 alloc_inode fs/inode.c:261 [inline]
 new_inode_pseudo+0x70/0x1f0 fs/inode.c:1063
 sock_alloc net/socket.c:629 [inline]
 __sock_create+0x12c/0x7c0 net/socket.c:1504
 sock_create net/socket.c:1596 [inline]
 __sys_socketpair+0x1a1/0x5b0 net/socket.c:1723
 __do_sys_socketpair net/socket.c:1776 [inline]
 __se_sys_socketpair net/socket.c:1773 [inline]
 __x64_sys_socketpair+0x9b/0xb0 net/socket.c:1773
 x64_sys_call+0x6e/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:54
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f9100b8e929
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9101a31038 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: ffffffffffffffda RBX: 00007f9100db5fa0 RCX: 00007f9100b8e929
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 000000000000001e
RBP: 00007f9101a31090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000940 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 00007f9100db5fa0 R15: 00007ffc0a385508
 </TASK>