syzbot

watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz.1.4397:24819]
Modules linked in:
irq event stamp: 10699727
hardirqs last  enabled at (10699726): [<ffffffff8b794234>] irqentry_exit+0x74/0x90 kernel/entry/common.c:200
hardirqs last disabled at (10699727): [<ffffffff8b792e6e>] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1050
softirqs last  enabled at (10658384): [<ffffffff8184f4da>] __do_softirq kernel/softirq.c:613 [inline]
softirqs last  enabled at (10658384): [<ffffffff8184f4da>] invoke_softirq kernel/softirq.c:453 [inline]
softirqs last  enabled at (10658384): [<ffffffff8184f4da>] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
softirqs last disabled at (10658387): [<ffffffff8184f4da>] __do_softirq kernel/softirq.c:613 [inline]
softirqs last disabled at (10658387): [<ffffffff8184f4da>] invoke_softirq kernel/softirq.c:453 [inline]
softirqs last disabled at (10658387): [<ffffffff8184f4da>] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
CPU: 0 UID: 0 PID: 24819 Comm: syz.1.4397 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:kasan_save_track+0x0/0x80 mm/kasan/common.c:65
Code: 8b 04 25 08 40 a0 92 8b 80 d8 05 00 00 89 07 89 77 04 e9 83 40 59 09 cc 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <66> 0f 1f 00 55 48 89 e5 41 57 41 56 53 48 83 e4 f0 48 81 ec 10 02
RSP: 0000:ffffc900000077e0 EFLAGS: 00000246
RAX: ffff88808841c600 RBX: ffff88808841c340 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 00000000000a2820 RDI: ffff88808841c600
RBP: 00000000000a2820 R08: 00000000ffffffff R09: 0000000000000000
R10: ffff88808841c600 R11: fffff91ffff907cd R12: 00000000000002c0
R13: ffff88808841c340 R14: ffff888140ee4c80 R15: 0000000000000001
FS:  00007f80fd2af6c0(0000) GS:ffff888125c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000ffffffff CR3: 0000000033bf2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 unpoison_slab_object mm/kasan/common.c:330 [inline]
 __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:356
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4180 [inline]
 slab_alloc_node mm/slub.c:4229 [inline]
 kmem_cache_alloc_node_noprof+0x1bb/0x3c0 mm/slub.c:4281
 kmalloc_reserve+0xbd/0x290 net/core/skbuff.c:578
 __alloc_skb+0x142/0x2d0 net/core/skbuff.c:669
 __netdev_alloc_skb+0x108/0x970 net/core/skbuff.c:733
 netdev_alloc_skb include/linux/skbuff.h:3437 [inline]
 dev_alloc_skb include/linux/skbuff.h:3450 [inline]
 hsr_init_skb+0xef/0x6e0 net/hsr/hsr_device.c:264
 send_hsr_supervision_frame+0x133/0xb30 net/hsr/hsr_device.c:313
 hsr_announce+0x1d5/0x360 net/hsr/hsr_device.c:415
 call_timer_fn+0x17b/0x5f0 kernel/time/timer.c:1747
 expire_timers kernel/time/timer.c:1798 [inline]
 __run_timers kernel/time/timer.c:2372 [inline]
 __run_timer_base+0x61a/0x860 kernel/time/timer.c:2384
 run_timer_base kernel/time/timer.c:2393 [inline]
 run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2403
 handle_softirqs+0x283/0x870 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:rcu_read_unlock_special+0x87/0x5e0 kernel/rcu/tree_plugin.h:776
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 b2 27 f9 10 41 f7 c6 00 00 f0 00 74 49 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0000:ffffc90005376cc0 EFLAGS: 00000206
RAX: f53b351bd486d600 RBX: 1ffff92000a6eda0 RCX: f53b351bd486d600
RDX: 0000000000000007 RSI: ffffffff8d9b694e RDI: ffffffff8be33280
RBP: ffffc90005376dc0 R08: ffffffff8fa37f37 R09: 1ffffffff1f46fe6
R10: dffffc0000000000 R11: fffffbfff1f46fe7 R12: ffffffff8e13f200
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
 __rcu_read_unlock+0x84/0xe0 kernel/rcu/tree_plugin.h:438
 rcu_read_unlock include/linux/rcupdate.h:873 [inline]
 trace_call_bpf+0x5ae/0x850 kernel/trace/bpf_trace.c:148
 perf_trace_run_bpf_submit+0x78/0x170 kernel/events/core.c:10911
 do_perf_trace_lock include/trace/events/lock.h:50 [inline]
 perf_trace_lock+0x2f8/0x3b0 include/trace/events/lock.h:50
 __do_trace_lock_release include/trace/events/lock.h:69 [inline]
 trace_lock_release include/trace/events/lock.h:69 [inline]
 lock_release+0x3b2/0x3e0 kernel/locking/lockdep.c:5879
 rcu_lock_release include/linux/rcupdate.h:341 [inline]
 rcu_read_unlock_sched include/linux/rcupdate.h:953 [inline]
 pfn_valid include/linux/mmzone.h:2172 [inline]
 __virt_addr_valid+0x475/0x5c0 arch/x86/mm/physaddr.c:65
 kasan_addr_to_slab+0xf/0x90 mm/kasan/common.c:37
 kasan_record_aux_stack+0xf/0xd0 mm/kasan/generic.c:533
 __call_rcu_common kernel/rcu/tree.c:3123 [inline]
 call_rcu+0x157/0x9c0 kernel/rcu/tree.c:3243
 context_switch kernel/sched/core.c:5360 [inline]
 __schedule+0x17a0/0x4cc0 kernel/sched/core.c:6961
 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7288
 irqentry_exit+0x6f/0x90 kernel/entry/common.c:197
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__sanitizer_cov_trace_pc+0x46/0x70 kernel/kcov.c:222
Code: ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 3c 16 00 00 00 74 2c 8b 91 18 16 00 00 83 fa 02 75 21 48 8b 91 20 16 00 00 48 8b 32 <48> 8d 7e 01 8b 89 1c 16 00 00 48 39 cf 73 08 48 89 3a 48 89 44 f2
RSP: 0000:ffffc90005377610 EFLAGS: 00000246
RAX: ffffffff8174859b RBX: ffff8880753f1ec0 RCX: ffff888032e73c00
RDX: ffffc9000dd41000 RSI: 0000000000007390 RDI: ffff8880753f1ec0
RBP: ffff8880753f1ec0 R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1f46fe7 R12: ffffea0000000000
R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
 __phys_addr+0x1b/0x180 arch/x86/mm/physaddr.c:16
 virt_to_folio include/linux/mm.h:1180 [inline]
 virt_to_slab mm/slab.h:187 [inline]
 qlink_to_cache mm/kasan/quarantine.c:131 [inline]
 qlist_free_all+0x39/0x140 mm/kasan/quarantine.c:176
 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:340
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4180 [inline]
 slab_alloc_node mm/slub.c:4229 [inline]
 __kmalloc_cache_noprof+0x1be/0x3d0 mm/slub.c:4391
 kmalloc_noprof include/linux/slab.h:905 [inline]
 kzalloc_noprof include/linux/slab.h:1039 [inline]
 nf_nat_masq_schedule+0x239/0x550 net/netfilter/nf_nat_masquerade.c:118
 masq_inet_event+0x193/0x230 net/netfilter/nf_nat_masquerade.c:208
 notifier_call_chain+0x1b3/0x3e0 kernel/notifier.c:85
 blocking_notifier_call_chain+0x6a/0x90 kernel/notifier.c:380
 __inet_del_ifa+0x87d/0x1040 net/ipv4/devinet.c:451
 inet_del_ifa net/ipv4/devinet.c:488 [inline]
 devinet_ioctl+0xb27/0x1b50 net/ipv4/devinet.c:1224
 inet_ioctl+0x3c0/0x4c0 net/ipv4/af_inet.c:1001
 sock_do_ioctl+0xd9/0x300 net/socket.c:1238
 sock_ioctl+0x576/0x790 net/socket.c:1359
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:598 [inline]
 __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:584
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f80fc38ebe9
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:00007f80fd2af038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f80fc5b6090 RCX: 00007f80fc38ebe9
RDX: 0000200000000040 RSI: 0000000000008916 RDI: 0000000000000008
RBP: 00007f80fc411e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f80fc5b6128 R14: 00007f80fc5b6090 R15: 00007ffcfaf1f778
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 24835 Comm: syz.5.4398 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:36 [inline]
RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:139 [inline]
RIP: 0010:wrmsrq arch/x86/include/asm/msr.h:199 [inline]
RIP: 0010:native_apic_msr_write+0x39/0x50 arch/x86/include/asm/apic.h:212
Code: 74 2a 83 ff 30 74 25 eb 10 81 ff d0 00 00 00 74 1b 81 ff e0 00 00 00 74 13 c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 <66> 90 c3 cc cc cc cc cc f3 0f 1e fa 89 f6 31 d2 e9 d2 57 8e 03 66
RSP: 0018:ffffc90000a07958 EFLAGS: 00000046
RAX: 0000000000000115 RBX: ffff8880b8723900 RCX: 0000000000000838
RDX: 0000000000000000 RSI: 0000000000000115 RDI: 0000000000000838
RBP: 0000000000000000 R08: ffffc90000a0764f R09: 0000000000000000
R10: ffffc90000a07640 R11: ffffffff81703490 R12: 0000000010005087
R13: dffffc0000000000 R14: 0000000000000115 R15: 0000000000000020
FS:  00007f6036ff06c0(0000) GS:ffff888125d1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc1ef8ce18 CR3: 00000000751c2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 apic_write arch/x86/include/asm/apic.h:405 [inline]
 lapic_next_event+0x11/0x20 arch/x86/kernel/apic/apic.c:416
 clockevents_program_event+0x1cc/0x360 kernel/time/clockevents.c:334
 hrtimer_interrupt+0x620/0xaa0 kernel/time/hrtimer.c:1900
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1039 [inline]
 __sysvec_apic_timer_interrupt+0x108/0x410 arch/x86/kernel/apic/apic.c:1056
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1050
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:do_perf_trace_lock include/trace/events/lock.h:50 [inline]
RIP: 0010:perf_trace_lock+0x2d3/0x3b0 include/trace/events/lock.h:50
Code: 24 00 48 83 c3 10 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 2b 6a 86 00 48 8b 44 24 30 48 8b 7c 24 18 48 89 47 10 <8b> 94 24 80 00 00 00 4c 8b 4c 24 60 41 b8 01 00 00 00 44 89 f6 48
RSP: 0018:ffffc90000a07bc0 EFLAGS: 00000246
RAX: ffffffff8e139ea0 RBX: ffffe8ffffd83e50 RCX: ffffffff819cab0a
RDX: 000000000000000d RSI: ffffffff8b8bd2a0 RDI: ffffe8ffffd83e40
RBP: ffffc90000a07cc0 R08: 646165725f756372 R09: 6b636f6c5f646165
R10: dffffc0000000000 R11: fffff91ffffb07cd R12: ffffe8ffffd83e65
R13: 000000000000000e R14: 000000000000002c R15: dffffc0000000000
 __do_trace_lock_release include/trace/events/lock.h:69 [inline]
 trace_lock_release include/trace/events/lock.h:69 [inline]
 lock_release+0x3b2/0x3e0 kernel/locking/lockdep.c:5879
 rcu_lock_release include/linux/rcupdate.h:341 [inline]
 rcu_read_unlock include/linux/rcupdate.h:871 [inline]
 class_rcu_destructor include/linux/rcupdate.h:1155 [inline]
 unwind_next_frame+0x19a9/0x2390 arch/x86/kernel/unwind_orc.c:680
 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:388 [inline]
 __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:405
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __do_kmalloc_node mm/slub.c:4365 [inline]
 __kmalloc_noprof+0x27a/0x4f0 mm/slub.c:4377
 kmalloc_noprof include/linux/slab.h:909 [inline]
 kzalloc_noprof include/linux/slab.h:1039 [inline]
 cfg80211_inform_single_bss_data+0x905/0x1ac0 net/wireless/scan.c:2351
 cfg80211_inform_bss_data+0x1fb/0x3b30 net/wireless/scan.c:3234
 cfg80211_inform_bss_frame_data+0x3d7/0x730 net/wireless/scan.c:3325
 ieee80211_bss_info_update+0x746/0x9e0 net/mac80211/scan.c:226
 ieee80211_scan_rx+0x593/0xa20 net/mac80211/scan.c:355
 __ieee80211_rx_handle_packet net/mac80211/rx.c:5186 [inline]
 ieee80211_rx_list+0x201c/0x2a90 net/mac80211/rx.c:5423
 ieee80211_rx_napi+0x1a8/0x3d0 net/mac80211/rx.c:5446
 ieee80211_rx include/net/mac80211.h:5210 [inline]
 ieee80211_handle_queued_frames+0xe8/0x1f0 net/mac80211/main.c:453
 tasklet_action_common+0x369/0x580 kernel/softirq.c:829
 handle_softirqs+0x283/0x870 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:folio_test_slab include/linux/page-flags.h:1050 [inline]
RIP: 0010:virt_to_slab mm/slab.h:189 [inline]
RIP: 0010:___cache_free+0x40/0xf0 mm/slub.c:4738
Code: 25 cd 21 a5 0b 48 89 f7 e8 cd 42 5c ff 48 c1 e8 06 48 83 e0 c0 49 8b 4c 04 08 f6 c1 01 75 79 49 01 c4 66 90 41 0f b6 44 24 33 <c1> e0 18 45 31 c0 3d 00 00 00 f5 4d 0f 44 c4 65 48 8b 05 41 fd 87
RSP: 0018:ffffc90005317380 EFLAGS: 00000282
RAX: 00000000000000f5 RBX: ffff88802ec5a980 RCX: ffff88801a4418c0
RDX: ffffc900223be000 RSI: 0000000000023f73 RDI: 0000000000023f74
RBP: ffff88802ec5a600 R08: ffffffff8fa37f37 R09: 1ffffffff1f46fe6
R10: dffffc0000000000 R11: fffffbfff1f46fe7 R12: ffffea0000bb1680
R13: 0000000000000000 R14: ffffffff822326ec R15: ffff88801a4418c0
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:340
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4180 [inline]
 slab_alloc_node mm/slub.c:4229 [inline]
 __do_kmalloc_node mm/slub.c:4364 [inline]
 __kvmalloc_node_noprof+0x2b0/0x5f0 mm/slub.c:5052
 kvmalloc_array_node_noprof include/linux/slab.h:1065 [inline]
 compute_scc+0x13b/0xfa0 kernel/bpf/verifier.c:24418
 bpf_check+0x173f6/0x1d2d0 kernel/bpf/verifier.c:24691
 bpf_prog_load+0x1318/0x1930 kernel/bpf/syscall.c:2979
 __sys_bpf+0x528/0x870 kernel/bpf/syscall.c:6029
 __do_sys_bpf kernel/bpf/syscall.c:6139 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:6137 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6137
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f603618ebe9
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:00007f6036ff0038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f60363b6270 RCX: 00007f603618ebe9
RDX: 0000000000000094 RSI: 00002000000002c0 RDI: 0000000000000005
RBP: 00007f6036211e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f60363b6308 R14: 00007f60363b6270 R15: 00007ffdafd3d9c8
 </TASK>