watchdog: BUG: soft lockup - CPU#0 stuck for 144s! [syz.4.12:6012] Modules linked in: irq event stamp: 12316337 hardirqs last enabled at (12316336): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (12316337): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (9685410): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last enabled at (9685410): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last enabled at (9685410): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 softirqs last disabled at (9685413): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last disabled at (9685413): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (9685413): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 CPU: 0 UID: 0 PID: 6012 Comm: syz.4.12 Not tainted 6.12.0-rc6-syzkaller-gfb86c42a2a5d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 RIP: 0010:lock_is_held_type+0x13b/0x190 Code: 75 44 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 75 4c 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 04 25 28 00 00 00 <48> 3b 44 24 08 75 42 89 d8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f RSP: 0018:ffffc90000006f18 EFLAGS: 00000206 RAX: ec09672ebe4b3200 RBX: 0000000000000001 RCX: 0000000000000102 RDX: ffff88807e413c00 RSI: ffffffff8c0adc40 RDI: ffffffff8c610860 RBP: 0000000000000006 R08: ffffffff89999f16 R09: ffffc90000007290 R10: ffffc90000007280 R11: fffff52000000e1e R12: 0000000000000246 R13: ffff88807e413c00 R14: 00000000ffffffff R15: ffffffff8e937da0 FS: 00007fcc4ccee6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30a1fffc CR3: 0000000031d06000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __in6_dev_get include/net/addrconf.h:330 [inline] ip6_ignore_linkdown include/net/addrconf.h:421 [inline] find_match+0xf9/0xc10 net/ipv6/route.c:744 __find_rr_leaf+0x275/0x8e0 net/ipv6/route.c:832 find_rr_leaf net/ipv6/route.c:853 [inline] rt6_select net/ipv6/route.c:897 [inline] fib6_table_lookup+0x413/0xbb0 net/ipv6/route.c:2195 ip6_pol_route+0x273/0x15d0 net/ipv6/route.c:2231 pol_lookup_func include/net/ip6_fib.h:616 [inline] fib6_rule_lookup+0x58c/0x790 net/ipv6/fib6_rules.c:117 ip6_route_input_lookup net/ipv6/route.c:2300 [inline] ip6_route_input+0x859/0xd90 net/ipv6/route.c:2596 ip6_rcv_finish+0x144/0x180 net/ipv6/ip6_input.c:77 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314 __netif_receive_skb_one_core net/core/dev.c:5670 [inline] __netif_receive_skb+0x1ea/0x650 net/core/dev.c:5783 process_backlog+0x662/0x15b0 net/core/dev.c:6115 __napi_poll+0xcb/0x490 net/core/dev.c:6779 napi_poll net/core/dev.c:6848 [inline] net_rx_action+0x89b/0x1240 net/core/dev.c:6970 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:strlen+0x31/0x70 lib/string.c:402 Code: 56 41 54 53 49 89 fe 48 c7 c0 ff ff ff ff 49 bf 00 00 00 00 00 fc ff df 48 89 fb 49 89 c4 48 89 d8 48 c1 e8 03 42 0f b6 04 38 <84> c0 75 12 48 ff c3 49 8d 44 24 01 43 80 7c 26 01 00 75 dd eb 13 RSP: 0018:ffffc900044cf338 EFLAGS: 00000a06 RAX: 0000000000000000 RBX: ffffffff8c087a20 RCX: 00000000044cf403 RDX: ffffffff813565ab RSI: ffff88801ac7b078 RDI: ffffffff8c087a20 RBP: ffffc900044cf470 R08: ffffffff901d08af R09: 1ffffffff203a115 R10: dffffc0000000000 R11: fffffbfff203a116 R12: ffffffffffffffff R13: ffffffff813565ab R14: ffffffff8c087a20 R15: dffffc0000000000 trace_event_get_offsets_lock include/trace/events/lock.h:50 [inline] perf_trace_lock+0x10a/0x490 include/trace/events/lock.h:50 trace_lock_release include/trace/events/lock.h:69 [inline] lock_release+0x9cc/0xa30 kernel/locking/lockdep.c:5836 __raw_spin_unlock include/linux/spinlock_api_smp.h:141 [inline] _raw_spin_unlock+0x16/0x50 kernel/locking/spinlock.c:186 spin_unlock include/linux/spinlock.h:391 [inline] __text_poke+0xa6b/0xd30 arch/x86/kernel/alternative.c:1960 text_poke arch/x86/kernel/alternative.c:1984 [inline] text_poke_bp_batch+0x59c/0xb30 arch/x86/kernel/alternative.c:2317 text_poke_flush arch/x86/kernel/alternative.c:2486 [inline] text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2493 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_enable_cpuslocked+0x136/0x260 kernel/jump_label.c:210 static_key_enable+0x1a/0x20 kernel/jump_label.c:223 tracepoint_add_func+0x953/0x9e0 kernel/tracepoint.c:361 tracepoint_probe_register_prio kernel/tracepoint.c:511 [inline] tracepoint_probe_register+0x105/0x160 kernel/tracepoint.c:531 perf_trace_event_reg kernel/trace/trace_event_perf.c:129 [inline] perf_trace_event_init+0x478/0x930 kernel/trace/trace_event_perf.c:202 perf_trace_init+0x243/0x2e0 kernel/trace/trace_event_perf.c:226 perf_tp_event_init+0x8d/0x110 kernel/events/core.c:10357 perf_try_init_event+0x146/0x810 kernel/events/core.c:11891 perf_init_event kernel/events/core.c:11977 [inline] perf_event_alloc+0x135f/0x2310 kernel/events/core.c:12259 __do_sys_perf_event_open kernel/events/core.c:12766 [inline] __se_sys_perf_event_open+0xb1f/0x3870 kernel/events/core.c:12657 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fcc4bf7e719 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:00007fcc4ccee038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007fcc4c135f80 RCX: 00007fcc4bf7e719 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 00007fcc4bff139e R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fcc4c135f80 R15: 00007ffeacbe0d48 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 6011 Comm: syz.3.11 Not tainted 6.12.0-rc6-syzkaller-gfb86c42a2a5d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 RIP: 0010:unwind_next_frame+0x638/0x22d0 arch/x86/kernel/unwind_orc.c:517 Code: f7 e8 1c 44 bd 00 48 8b 54 24 10 49 8b 06 48 89 04 24 48 8d 5a 01 48 89 d0 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 75 18 00 00 <48> 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 84 8b 04 00 00 89 d9 RSP: 0018:ffffc90000a182b0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffffff90aec115 RCX: ffffffff903570a8 RDX: ffffffff90aec114 RSI: ffffffff90aec114 RDI: 0000000000000001 RBP: ffffc90000a183d0 R08: 0000000000000001 R09: ffffc90000a18470 R10: ffffc90000a183d0 R11: ffffffff818092c0 R12: dffffc0000000000 R13: ffffc90000a18380 R14: ffffc90000a183b8 R15: ffffffff90aec118 FS: 00007ff72c3296c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000564ba8151ff8 CR3: 000000007f640000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:247 [inline] slab_post_alloc_hook mm/slub.c:4085 [inline] slab_alloc_node mm/slub.c:4134 [inline] kmem_cache_alloc_node_noprof+0x16b/0x320 mm/slub.c:4186 __alloc_skb+0x1c3/0x440 net/core/skbuff.c:668 skb_copy+0x19d/0x9c0 net/core/skbuff.c:2159 mac80211_hwsim_tx_frame_no_nl+0x106b/0x18d0 drivers/net/wireless/virtual/mac80211_hwsim.c:1866 mac80211_hwsim_tx_frame+0x1cc/0x220 drivers/net/wireless/virtual/mac80211_hwsim.c:2215 mac80211_hwsim_beacon_tx+0x3bf/0x850 drivers/net/wireless/virtual/mac80211_hwsim.c:2315 __iterate_interfaces+0x222/0x510 net/mac80211/util.c:774 ieee80211_iterate_active_interfaces_atomic+0xd8/0x170 net/mac80211/util.c:810 mac80211_hwsim_beacon+0xd4/0x1f0 drivers/net/wireless/virtual/mac80211_hwsim.c:2345 __run_hrtimer kernel/time/hrtimer.c:1691 [inline] __hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1755 hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1772 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:preempt_schedule_irq+0xf6/0x1c0 kernel/sched/core.c:7012 Code: 89 f5 49 c1 ed 03 eb 0d 48 f7 03 08 00 00 00 0f 84 8b 00 00 00 bf 01 00 00 00 e8 65 d3 93 f5 e8 f0 45 cd f5 fb bf 01 00 00 00 85 ab ff ff 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 e5 45 2f f6 48 RSP: 0018:ffffc9000442f700 EFLAGS: 00000286 RAX: c7213df53e37a000 RBX: 1ffff92000885ee8 RCX: ffffffff8170bffa RDX: dffffc0000000000 RSI: ffffffff8c0acac0 RDI: 0000000000000001 RBP: ffffc9000442f7c0 R08: ffffffff942cd837 R09: 1ffffffff2859b06 R10: dffffc0000000000 R11: fffffbfff2859b07 R12: 1ffff92000885ee0 R13: 1ffff92000885ee4 R14: ffffc9000442f720 R15: dffffc0000000000 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:preempt_count_sub+0x66/0x170 kernel/sched/core.c:5835 Code: c1 81 e1 ff ff ff 7f 39 d9 7c 27 81 fb fe 00 00 00 77 07 0f b6 c0 85 c0 74 5f 65 8b 05 1b a7 a0 7e f7 db 65 01 1d 12 a7 a0 7e <5b> 41 5e c3 cc cc cc cc 90 e8 6c 99 56 03 85 c0 74 3a 48 c7 c0 00 RSP: 0018:ffffc9000442f888 EFLAGS: 00000257 RAX: 0000000000000001 RBX: 00000000ffffffff RCX: 0000000000000001 RDX: dffffc0000000000 RSI: ffffffff8c0acac0 RDI: 0000000000000001 RBP: ffffc9000442f930 R08: ffffffff942cd837 R09: 1ffffffff2859b06 R10: dffffc0000000000 R11: fffffbfff2859b07 R12: dffffc0000000000 R13: 1ffff92000885f14 R14: dffffc0000000000 R15: 0000000000000246 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock_irqrestore+0xdd/0x140 kernel/locking/spinlock.c:194 __debug_check_no_obj_freed lib/debugobjects.c:998 [inline] debug_check_no_obj_freed+0x561/0x580 lib/debugobjects.c:1019 free_pages_prepare mm/page_alloc.c:1115 [inline] free_unref_page+0x41b/0xf20 mm/page_alloc.c:2638 __slab_free+0x31b/0x3d0 mm/slub.c:4490 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:247 [inline] slab_post_alloc_hook mm/slub.c:4085 [inline] slab_alloc_node mm/slub.c:4134 [inline] kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4141 alloc_empty_file+0x9e/0x1d0 fs/file_table.c:209 alloc_file fs/file_table.c:326 [inline] alloc_file_pseudo+0x1da/0x290 fs/file_table.c:357 sock_alloc_file+0xb8/0x280 net/socket.c:468 __sys_socketpair+0x4f9/0x720 net/socket.c:1810 __do_sys_socketpair net/socket.c:1832 [inline] __se_sys_socketpair net/socket.c:1829 [inline] __x64_sys_socketpair+0x9b/0xb0 net/socket.c:1829 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff72b57e719 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:00007ff72c329038 EFLAGS: 00000246 ORIG_RAX: 0000000000000035 RAX: ffffffffffffffda RBX: 00007ff72b735f80 RCX: 00007ff72b57e719 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000001 RBP: 00007ff72b5f139e R08: 0000000000000000 R09: 0000000000000000 R10: 00000000200029c0 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ff72b735f80 R15: 00007ffd8c1ae988