watchdog: BUG: soft lockup - CPU#1 stuck for 144s! [syz.1.22:6029] Modules linked in: irq event stamp: 14015883 hardirqs last enabled at (14015882): [] irqentry_exit+0x5dd/0x660 kernel/entry/common.c:219 hardirqs last disabled at (14015883): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1056 softirqs last enabled at (13403092): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last enabled at (13403092): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last enabled at (13403092): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 softirqs last disabled at (13403095): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last disabled at (13403095): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last disabled at (13403095): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 CPU: 1 UID: 0 PID: 6029 Comm: syz.1.22 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:unwind_next_frame+0x5/0x2390 arch/x86/kernel/unwind_orc.c:469 Code: e1 07 80 c1 03 38 c1 7c 92 48 89 df e8 34 4b b3 00 eb 88 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 <41> 57 41 56 41 55 41 54 53 48 81 ec 98 00 00 00 49 89 fe 48 bd 00 RSP: 0018:ffffc90000a086f8 EFLAGS: 00000202 RAX: 0000000000000001 RBX: ffffc90000a087c0 RCX: 41f08784701db800 RDX: dffffc0000000000 RSI: ffffffff82166362 RDI: ffffc90000a08708 RBP: ffffc90000a08790 R08: ffffc90000a087d0 R09: 000000000000001d R10: ffffc90000a08758 R11: ffffffff81ad4ad0 R12: ffff8880789c1e80 R13: 0000000000000000 R14: ffffffff81ad4ad0 R15: ffffc90000a08708 FS: 00007f4d339936c0(0000) GS:ffff8881261b0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4d33971f98 CR3: 0000000075a1c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: 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:56 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:77 __kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:587 kasan_save_free_info mm/kasan/kasan.h:406 [inline] poison_slab_object mm/kasan/common.c:252 [inline] __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:284 kasan_slab_free include/linux/kasan.h:234 [inline] slab_free_hook mm/slub.c:2540 [inline] slab_free mm/slub.c:6663 [inline] kmem_cache_free+0x197/0x620 mm/slub.c:6774 pagetable_dtor include/linux/mm.h:3074 [inline] pagetable_dtor_free include/linux/mm.h:3081 [inline] __tlb_remove_table+0x68/0x230 include/asm-generic/tlb.h:220 __tlb_remove_table_free mm/mmu_gather.c:227 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xd70/0x1870 kernel/rcu/tree.c:2857 handle_softirqs+0x27d/0x850 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:98 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:115 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:140 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:172 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:191 [inline] RIP: 0010:kasan_check_range+0x9f/0x2c0 mm/kasan/generic.c:200 Code: 00 fc ff df 4d 8d 34 19 4d 89 f4 4d 29 dc 49 83 fc 10 7f 29 4d 85 e4 0f 84 41 01 00 00 4c 89 cb 48 f7 d3 4c 01 fb 41 80 3b 00 <0f> 85 de 01 00 00 49 ff c3 48 ff c3 75 ee e9 21 01 00 00 44 89 dd RSP: 0018:ffffc900055be848 EFLAGS: 00000246 RAX: f2f2f200f2f2f201 RBX: fffffffffffffffe RCX: ffffffff8b4a1c1a RDX: 0000000000000001 RSI: 0000000000000010 RDI: ffffc900055bea40 RBP: 0000000000000000 R08: ffffc900055bea4f R09: 1ffff92000ab7d49 R10: dffffc0000000000 R11: fffff52000ab7d48 R12: 0000000000000002 R13: 0000000000000001 R14: fffff52000ab7d4a R15: 1ffff92000ab7d48 __asan_memset+0x22/0x50 mm/kasan/shadow.c:84 __schedule+0xaa/0x5000 kernel/sched/core.c:6729 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7190 irqentry_exit+0x5d8/0x660 kernel/entry/common.c:216 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:__rcu_read_unlock+0x0/0xe0 kernel/rcu/tree_plugin.h:431 Code: 89 d9 80 e1 07 80 c1 03 38 c1 7c dc 48 89 df e8 26 3b 7f 00 eb d2 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 41 57 41 56 41 55 41 54 53 49 bf 00 00 00 00 00 fc ff RSP: 0018:ffffc900055bec70 EFLAGS: 00000282 RAX: 41f08784701db800 RBX: ffffffff901f0501 RCX: 41f08784701db800 RDX: 0000000000000000 RSI: ffffffff8d952191 RDI: ffffffff8bbfc660 RBP: dffffc0000000000 R08: ffffc900055bf458 R09: 0000000000000000 R10: ffffc900055bed98 R11: fffff52000ab7db5 R12: ffffc900055bf468 R13: ffffc900055b8000 R14: ffffc900055bed48 R15: ffffffff8173ef25 rcu_read_unlock include/linux/rcupdate.h:899 [inline] class_rcu_destructor include/linux/rcupdate.h:1195 [inline] unwind_next_frame+0x19ae/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 save_stack+0xf5/0x1f0 mm/page_owner.c:156 __reset_page_owner+0x71/0x1f0 mm/page_owner.c:311 reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2901 ___free_pages_bulk mm/kasan/shadow.c:333 [inline] __kasan_populate_vmalloc mm/kasan/shadow.c:393 [inline] kasan_populate_vmalloc+0x1db/0x270 mm/kasan/shadow.c:435 alloc_vmap_area+0xd4e/0x1470 mm/vmalloc.c:2098 __get_vm_area_node+0x1f8/0x300 mm/vmalloc.c:3193 __vmalloc_node_range_noprof+0x30c/0x12d0 mm/vmalloc.c:3857 __vmalloc_node_noprof mm/vmalloc.c:3960 [inline] vmalloc_noprof+0xb2/0xf0 mm/vmalloc.c:3993 bpf_prog_calc_tag+0x4c/0x370 kernel/bpf/core.c:306 resolve_pseudo_ldimm64+0xbc/0xc60 kernel/bpf/verifier.c:21047 bpf_check+0x1cf9/0x1c300 kernel/bpf/verifier.c:25216 bpf_prog_load+0x13ba/0x1a10 kernel/bpf/syscall.c:3088 __sys_bpf+0x5c3/0x8a0 kernel/bpf/syscall.c:6207 __do_sys_bpf kernel/bpf/syscall.c:6320 [inline] __se_sys_bpf kernel/bpf/syscall.c:6318 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6318 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4d32b8f749 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:00007f4d33993038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f4d32de5fa0 RCX: 00007f4d32b8f749 RDX: 0000000000000094 RSI: 0000200000001580 RDI: 0000000000000005 RBP: 00007f4d32c13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f4d32de6038 R14: 00007f4d32de5fa0 R15: 00007fff27b33478 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 6031 Comm: syz.2.23 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:unwind_next_frame+0x374/0x2390 arch/x86/kernel/unwind_orc.c:505 Code: ea 48 01 d2 48 01 f2 48 bd 00 00 00 00 00 fc ff df 0f 84 37 01 00 00 4c 8d 62 04 4c 8d 6a 05 4c 89 e0 48 c1 e8 03 0f b6 04 28 <84> c0 0f 85 6d 19 00 00 4c 89 e8 48 c1 e8 03 0f b6 04 28 84 c0 0f RSP: 0018:ffffc90000006b18 EFLAGS: 00000a03 RAX: 0000000000000000 RBX: ffffffff8f9cb804 RCX: ffffffff8f9cb808 RDX: ffffffff9019eb20 RSI: ffffffff9019eb08 RDI: ffffffff8bbfc600 RBP: dffffc0000000000 R08: 0000000000000005 R09: ffffffff8df41cc0 R10: ffffc90000006748 R11: ffffffff81ad4ad0 R12: ffffffff9019eb24 R13: ffffffff9019eb25 R14: ffffc90000006be8 R15: ffffffff8f9cb804 FS: 00007eff9bb8a6c0(0000) GS:ffff8881260b0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555573fae5c8 CR3: 000000007446e000 CR4: 00000000003526f0 Call Trace: arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 kasan_save_stack+0x3e/0x60 mm/kasan/common.c:56 kasan_record_aux_stack+0xbd/0xd0 mm/kasan/generic.c:559 kvfree_call_rcu+0x11b/0x480 mm/slab_common.c:1994 cfg80211_update_known_bss+0x830/0x1590 net/wireless/scan.c:1944 __cfg80211_bss_update+0x147/0x2110 net/wireless/scan.c:1989 cfg80211_inform_single_bss_data+0xbc8/0x1ad0 net/wireless/scan.c:2369 cfg80211_inform_bss_data+0x203/0x3b40 net/wireless/scan.c:3228 cfg80211_inform_bss_frame_data+0x3c7/0x710 net/wireless/scan.c:3319 ieee80211_bss_info_update+0x749/0x9e0 net/mac80211/scan.c:230 ieee80211_scan_rx+0x593/0xa20 net/mac80211/scan.c:359 __ieee80211_rx_handle_packet net/mac80211/rx.c:5282 [inline] ieee80211_rx_list+0x2485/0x2f90 net/mac80211/rx.c:5539 ieee80211_rx_napi+0x1a8/0x3d0 net/mac80211/rx.c:5562 ieee80211_rx include/net/mac80211.h:5216 [inline] ieee80211_handle_queued_frames+0xe8/0x1e0 net/mac80211/main.c:452 tasklet_action_common+0x358/0x550 kernel/softirq.c:925 handle_softirqs+0x27d/0x850 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:26 [inline] RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:109 [inline] RIP: 0010:tracing_gen_ctx include/linux/trace_events.h:206 [inline] RIP: 0010:perf_trace_buf_update+0x7f/0x220 kernel/trace/trace_event_perf.c:429 Code: 8d 6c 24 20 49 c1 ed 03 48 b8 f1 f1 f1 f1 00 f3 f3 f3 4b 89 44 25 00 e8 6f 5d f6 ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 00 02 00 00 45 31 ff 48 23 74 24 40 41 0f 94 c7 31 ff e8 29 62 RSP: 0018:ffffc9000559ec40 EFLAGS: 00000293 RAX: ffffffff81caecf1 RBX: ffffe8ffffcad000 RCX: ffff8880789c5b80 RDX: 0000000000000000 RSI: 00000000000000ec RDI: ffffe8ffffcad000 RBP: ffffc9000559ecf0 R08: ffffc9000559eecf R09: 0000000000000000 R10: ffffc9000559eec0 R11: fffff52000ab3dda R12: dffffc0000000000 R13: 1ffff92000ab3d8c R14: 00000000000000ec R15: dffffc0000000000 perf_tp_event+0xf6/0x1380 kernel/events/core.c:11069 perf_trace_run_bpf_submit+0xee/0x170 kernel/events/core.c:11007 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+0x389/0x3b0 kernel/locking/lockdep.c:5879 rcu_lock_release include/linux/rcupdate.h:341 [inline] rcu_read_unlock include/linux/rcupdate.h:897 [inline] is_bpf_text_address+0x28d/0x2b0 kernel/bpf/core.c:748 kernel_text_address+0xa5/0xe0 kernel/extable.c:125 __kernel_text_address+0xd/0x40 kernel/extable.c:79 unwind_get_return_address+0x4d/0x90 arch/x86/kernel/unwind_orc.c:369 arch_stack_walk+0xfc/0x150 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 kasan_save_stack+0x3e/0x60 mm/kasan/common.c:56 kasan_record_aux_stack+0xbd/0xd0 mm/kasan/generic.c:559 __call_rcu_common kernel/rcu/tree.c:3119 [inline] call_rcu+0x157/0x9c0 kernel/rcu/tree.c:3239 context_switch kernel/sched/core.c:5259 [inline] __schedule+0x14c4/0x5000 kernel/sched/core.c:6863 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7190 irqentry_exit+0x5d8/0x660 kernel/entry/common.c:216 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:__cancel_work_sync+0x79/0x110 kernel/workqueue.c:4396 Code: 36 00 49 83 e7 20 75 26 e8 74 86 36 00 48 c7 c7 00 04 6a 8b be 26 11 00 00 e8 03 89 07 00 2e 2e 2e 31 c0 80 3d b7 b7 f2 10 00 <75> 31 eb 55 65 44 8b 3d 1b 3c ec 10 44 89 fe 81 e6 00 00 0f 00 31 RSP: 0018:ffffc9000559fa98 EFLAGS: 00000202 RAX: 0000000000000000 RBX: ffff88802e61a5f8 RCX: 4639d1b5fde29c00 RDX: ffff8880789c5b80 RSI: ffffffff8d952191 RDI: ffffffff8bbfc660 RBP: 0000000000000000 R08: ffffffff8f805b77 R09: 1ffffffff1f00b6e R10: dffffc0000000000 R11: fffffbfff1f00b6f R12: dffffc0000000000 R13: 0000000000000009 R14: 0000000000000000 R15: 0000000000000000 do_exit+0x352/0x2310 kernel/exit.c:914 do_group_exit+0x21c/0x2d0 kernel/exit.c:1114 get_signal+0x1285/0x1340 kernel/signal.c:3034 arch_do_signal_or_restart+0x9a/0x7a0 arch/x86/kernel/signal.c:337 __exit_to_user_mode_loop kernel/entry/common.c:41 [inline] exit_to_user_mode_loop+0x87/0x4f0 kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline] do_syscall_64+0x2e3/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7eff9ad8f749 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:00007eff9bb8a038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: 0000000000000014 RBX: 00007eff9afe5fa0 RCX: 00007eff9ad8f749 RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000006 RBP: 00007eff9ae13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007eff9afe6038 R14: 00007eff9afe5fa0 R15: 00007ffc9e25ce48