watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.4:13302] Modules linked in: irq event stamp: 2762597 hardirqs last enabled at (2762596): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2762597): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2754668): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2754671): [] irq_exit_rcu+0x94/0xc0 CPU: 0 UID: 0 PID: 13302 Comm: syz-executor.4 Not tainted 6.12.0-rc5-next-20241104 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:stack_trace_consume_entry+0x4/0x170 Code: ff ff ff eb c7 e8 1c 96 44 03 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <48> b8 00 00 00 00 00 fc ff df 55 53 48 89 fb 48 83 c7 10 48 89 fa RSP: 0018:ffff88806ce097e0 EFLAGS: 00000286 RAX: ffffffff813ef6ff RBX: ffffffff813ef450 RCX: ffff88806ce09888 RDX: 1ffff1100d9c1308 RSI: ffffffff813ef6ff RDI: ffff88806ce098b0 RBP: ffff88806ce09880 R08: 0000000000000001 R09: ffff88806ce09828 R10: 000000000003c001 R11: 0000000000003eff R12: ffff88806ce098b0 R13: 0000000000000000 R14: ffff88801e430000 R15: 0000000000082820 FS: 00007f078bb86700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff76ad33018 CR3: 000000003d654000 CR4: 0000000000350ef0 DR0: ffff7fffffff01dd DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: arch_stack_walk+0x77/0xf0 stack_trace_save+0x8f/0xc0 set_track_prepare+0x36/0x70 __alloc_object+0xf4/0x270 __create_object+0x1d/0x80 kmem_cache_alloc_node_noprof+0x311/0x3e0 kmalloc_reserve+0x189/0x2b0 __alloc_skb+0x162/0x370 __netdev_alloc_skb+0x7a/0x7a0 __ieee80211_beacon_get+0x3f4/0xfc0 ieee80211_beacon_get_tim+0xa6/0x280 mac80211_hwsim_beacon_tx+0x49b/0x950 __iterate_interfaces+0x2e0/0x650 ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x1ab/0xa70 hrtimer_run_softirq+0x14c/0x310 handle_softirqs+0x1b1/0x770 irq_exit_rcu+0x94/0xc0 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:__sanitizer_cov_trace_switch+0x57/0x90 Code: 00 00 00 4c 8b 75 00 31 db 4d 85 f6 74 1e 48 8b 74 dd 10 48 8b 4c 24 28 4c 89 e2 4c 89 ef 48 83 c3 01 e8 7c fd ff ff 49 39 de <75> e2 5b 5d 41 5c 41 5d 41 5e e9 9a fb 33 03 41 bd 07 00 00 00 48 RSP: 0018:ffff88803f4ef8b8 EFLAGS: 00000206 RAX: 0000000000000002 RBX: 0000000000000002 RCX: ffffffff848123f4 RDX: ffff88801e430000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffffff852cce20 R08: 000000000000000f R09: ffffed1007e9df76 R10: 000000000000000f R11: fffffffffffc7480 R12: 000000000000000f R13: 0000000000000001 R14: 0000000000000008 R15: ffff88803f4ef9e8 vsnprintf+0x184/0x1620 sprintf+0xc4/0x100 info_print_prefix+0x1c4/0x210 find_first_fitting_seq+0xd7/0x250 syslog_print_all+0x152/0x3b0 do_syslog.part.0+0x35d/0x5c0 __x64_sys_syslog+0x10d/0x170 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f078e610b19 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f078bb86188 EFLAGS: 00000246 ORIG_RAX: 0000000000000067 RAX: ffffffffffffffda RBX: 00007f078e723f60 RCX: 00007f078e610b19 RDX: 00000000000000fb RSI: 0000000020000380 RDI: 0000000000000003 RBP: 00007f078e66af6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe5ba915af R14: 00007f078bb86300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0x1e/0x30 ---------------- Code disassembly (best guess), 3 bytes skipped: 0: eb c7 jmp 0xffffffc9 2: e8 1c 96 44 03 callq 0x3449623 7: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1) e: 00 00 00 11: 66 90 xchg %ax,%ax 13: 90 nop 14: 90 nop 15: 90 nop 16: 90 nop 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 90 nop 1e: 90 nop 1f: 90 nop 20: 90 nop 21: 90 nop 22: 90 nop 23: f3 0f 1e fa endbr64 * 27: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax <-- trapping instruction 2e: fc ff df 31: 55 push %rbp 32: 53 push %rbx 33: 48 89 fb mov %rdi,%rbx 36: 48 83 c7 10 add $0x10,%rdi 3a: 48 89 fa mov %rdi,%rdx