watchdog: BUG: soft lockup - CPU#0 stuck for 144s! [syz.1.33:6046] Modules linked in: irq event stamp: 14755447 hardirqs last enabled at (14755446): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (14755447): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (5574302): [] __do_softirq kernel/softirq.c:595 [inline] softirqs last enabled at (5574302): [] invoke_softirq kernel/softirq.c:435 [inline] softirqs last enabled at (5574302): [] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662 softirqs last disabled at (5574305): [] __do_softirq kernel/softirq.c:595 [inline] softirqs last disabled at (5574305): [] invoke_softirq kernel/softirq.c:435 [inline] softirqs last disabled at (5574305): [] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662 CPU: 0 UID: 0 PID: 6046 Comm: syz.1.33 Not tainted 6.13.0-syzkaller-g5b670712e18c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 RIP: 0010:unwind_next_frame+0x805/0x22d0 arch/x86/kernel/unwind_orc.c:521 Code: 08 48 89 df e8 cc 26 ba 00 48 8b 1b 48 85 db 0f 84 84 0a 00 00 48 83 c3 38 48 89 df e8 44 27 00 00 48 89 04 24 e9 da 02 00 00 <49> 8d 5d 40 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 0d 48 89 df e8 RSP: 0018:ffffc90000006970 EFLAGS: 00000246 RAX: ffffc90000006a75 RBX: 0000000000000004 RCX: ffffffff90932758 RDX: ffffffff913ca718 RSI: ffffffff913ca718 RDI: 0000000000000001 RBP: ffffc90000006a90 R08: 0000000000000001 R09: ffffc90000006b30 R10: ffffc90000006a90 R11: ffffffff81ab2ef0 R12: dffffc0000000000 R13: ffffc90000006a40 R14: ffffc90000006a78 R15: ffffffff913ca71c FS: 00007fb4953a06c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa413b94d90 CR3: 000000001efe0000 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+0x3f/0x60 mm/kasan/common.c:47 kasan_record_aux_stack+0xaa/0xc0 mm/kasan/generic.c:548 kvfree_call_rcu+0xa9/0x3e0 mm/slab_common.c:1947 cfg80211_update_known_bss+0xb45/0x1590 net/wireless/scan.c:1925 __cfg80211_bss_update+0x153/0x2030 net/wireless/scan.c:1972 cfg80211_inform_single_bss_data+0xd82/0x2070 net/wireless/scan.c:2363 cfg80211_inform_bss_data+0x3c8/0x5d60 net/wireless/scan.c:3222 cfg80211_inform_bss_frame_data+0x3bb/0x720 net/wireless/scan.c:3317 ieee80211_bss_info_update+0x8a7/0xbc0 net/mac80211/scan.c:226 ieee80211_scan_rx+0x526/0x9c0 net/mac80211/scan.c:340 __ieee80211_rx_handle_packet net/mac80211/rx.c:5246 [inline] ieee80211_rx_list+0x2c44/0x3810 net/mac80211/rx.c:5483 ieee80211_rx_napi+0x18a/0x3c0 net/mac80211/rx.c:5506 ieee80211_rx include/net/mac80211.h:5172 [inline] ieee80211_handle_queued_frames+0xe7/0x1e0 net/mac80211/main.c:441 tasklet_action_common+0x426/0x620 kernel/softirq.c:811 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561 __do_softirq kernel/softirq.c:595 [inline] invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678 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:finish_task_switch+0x1ea/0x870 kernel/sched/core.c:5251 Code: c9 50 e8 e9 08 0c 00 48 83 c4 08 4c 89 f7 e8 fd 39 00 00 0f 1f 44 00 00 4c 89 f7 e8 60 21 69 0a e8 0b 66 38 00 fb 48 8b 5d c0 <48> 8d bb 08 16 00 00 48 89 f8 48 c1 e8 03 49 be 00 00 00 00 00 fc RSP: 0018:ffffc9000513f2c8 EFLAGS: 00000282 RAX: 749241035f6cbf00 RBX: ffff888020779e00 RCX: ffffffff819b4cfa RDX: dffffc0000000000 RSI: ffffffff8c0aa660 RDI: ffffffff8c608160 RBP: ffffc9000513f310 R08: ffffffff942f6847 R09: 1ffffffff285ed08 R10: dffffc0000000000 R11: fffffbfff285ed09 R12: 1ffff110170c7ee6 R13: dffffc0000000000 R14: ffff8880b863e900 R15: ffff8880b863f730 context_switch kernel/sched/core.c:5380 [inline] __schedule+0x1916/0x4c90 kernel/sched/core.c:6764 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7086 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_schedule+0xe1/0xf0 Code: 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 44 24 48 75 18 48 8d 65 e0 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc e8 1f 00 00 00 c8 e8 c8 df fe ff 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 RSP: 0018:ffffc9000513f6a0 EFLAGS: 00000246 RAX: 1ffff110040ef3c0 RBX: 1ffff92000a27ed4 RCX: 1ffff92000a27eac RDX: dffffc0000000000 RSI: ffffffff8c0aa660 RDI: ffff88802077b408 RBP: ffffc9000513f728 R08: ffffffff942f6847 R09: 1ffffffff285ed08 R10: dffffc0000000000 R11: fffffbfff285ed09 R12: 1ffff92000a27ed8 R13: ffffffff931e9caa R14: ffffc9000513f6c0 R15: dffffc0000000000 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12 on_each_cpu_cond_mask+0x79/0x80 kernel/smp.c:1053 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:2114 [inline] text_poke_bp_batch+0x726/0xb30 arch/x86/kernel/alternative.c:2386 text_poke_flush arch/x86/kernel/alternative.c:2515 [inline] text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2522 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+0x973/0xaa0 kernel/tracepoint.c:315 tracepoint_probe_register_prio kernel/tracepoint.c:464 [inline] tracepoint_probe_register+0x105/0x160 kernel/tracepoint.c:484 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:10450 perf_try_init_event+0x146/0x810 kernel/events/core.c:11985 perf_init_event kernel/events/core.c:12071 [inline] perf_event_alloc+0x1324/0x1e30 kernel/events/core.c:12353 __do_sys_perf_event_open kernel/events/core.c:12875 [inline] __se_sys_perf_event_open+0xa5d/0x34b0 kernel/events/core.c:12765 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: 0033:0x7fb49458cda9 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:00007fb4953a0038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007fb4947a5fa0 RCX: 00007fb49458cda9 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000000 RBP: 00007fb49460e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb4947a5fa0 R15: 00007ffdac0d1bd8 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 6080 Comm: kworker/u8:14 Not tainted 6.13.0-syzkaller-g5b670712e18c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Workqueue: bat_events batadv_nc_worker RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:217 [inline] RIP: 0010:unwind_next_frame+0x1cb/0x22d0 arch/x86/kernel/unwind_orc.c:494 Code: 5a c5 0c 00 0f 45 d1 8d 42 ff 44 39 f0 0f 86 55 18 00 00 44 89 f0 48 8d 1c 85 4c ea 4b 91 48 89 d8 48 c1 e8 03 42 0f b6 04 20 <84> c0 4c 89 e5 0f 85 97 1a 00 00 44 8b 23 44 89 f0 ff c0 48 8d 1c RSP: 0018:ffffc90000a18250 EFLAGS: 00000a07 RAX: 0000000000000000 RBX: ffffffff914e1064 RCX: 00000000000af90f RDX: 00000000000af90f RSI: ffffffff81898700 RDI: 0000000000000001 RBP: ffffc90000a18355 R08: 0000000000000016 R09: ffffc90000a18410 R10: ffffc90000a18370 R11: ffffffff81ab2ef0 R12: dffffc0000000000 R13: ffffc90000a18320 R14: 0000000000008986 R15: ffffffff818986ff FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055b08e0fe068 CR3: 000000003314a000 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:250 [inline] slab_post_alloc_hook mm/slub.c:4115 [inline] slab_alloc_node mm/slub.c:4164 [inline] kmem_cache_alloc_node_noprof+0x1d9/0x380 mm/slub.c:4216 kmalloc_reserve+0xa8/0x2a0 net/core/skbuff.c:587 __alloc_skb+0x1f3/0x440 net/core/skbuff.c:678 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+0x297/0x570 net/mac80211/util.c:760 ieee80211_iterate_active_interfaces_atomic+0xd8/0x170 net/mac80211/util.c:796 mac80211_hwsim_beacon+0xd4/0x1f0 drivers/net/wireless/virtual/mac80211_hwsim.c:2345 __run_hrtimer kernel/time/hrtimer.c:1738 [inline] __hrtimer_run_queues+0x59b/0xd30 kernel/time/hrtimer.c:1802 hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1819 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561 __do_softirq kernel/softirq.c:595 [inline] invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678 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:lock_acquire+0x468/0x550 Code: fd ff ff 48 89 df e8 07 2a 8b 00 e9 fe fc ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 33 ff ff ff e8 dd 2a 8b 00 e9 29 ff ff ff 0f 1e fa 45 89 f7 65 8b 05 f6 fd 68 7e 83 f8 08 0f 83 bf 00 00 RSP: 0018:ffffc9000538f940 EFLAGS: 00000a06 RAX: f2f2f200f1f1f1f1 RBX: ffff88802eed5180 RCX: 0000000000000002 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e938760 RBP: ffffc9000538faa0 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: fffffbfff20367af R12: 1ffff92000a71f30 R13: dffffc0000000000 R14: 0000000000000000 R15: dffffc0000000000 rcu_lock_acquire include/linux/rcupdate.h:337 [inline] rcu_read_lock include/linux/rcupdate.h:849 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline] batadv_nc_worker+0xec/0x610 net/batman-adv/network-coding.c:719 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317 worker_thread+0x870/0xd30 kernel/workqueue.c:3398 kthread+0x7a9/0x920 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244