audit: type=1400 audit(1733182003.024:17): avc: denied { write } for pid=7233 comm="syz-executor.5" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.7:7242] Modules linked in: irq event stamp: 2262329 hardirqs last enabled at (2262328): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2262329): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2246536): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2246543): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 7242 Comm: syz-executor.7 Not tainted 6.12.0-next-20241128 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_get_return_address+0x72/0xa0 Code: ea 03 80 3c 02 00 75 36 48 8b 7b 58 e8 f7 7e 0d 00 85 c0 74 cf 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 80 3c 02 00 <75> 1c 48 8b 43 58 5b 5d e9 a1 9a 72 03 e8 4c 59 77 00 eb a0 48 89 RSP: 0018:ffff88806cf09590 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffff88806cf095a8 RCX: 0000000000000001 RDX: 1ffff1100d9e12c0 RSI: ffff88806cf09f48 RDI: ffffffff811a9621 RBP: ffff88806cf09600 R08: 0000000000000001 R09: ffff88806cf095e8 R10: 000000000003c001 R11: 0000000000012b75 R12: ffff88806cf09670 R13: 0000000000000000 R14: ffff88803967d280 R15: 0000000000092820 FS: 00007fb680b68700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffad3c1ff8 CR3: 000000003d776000 CR4: 0000000000350ef0 Call Trace: arch_stack_walk+0x9d/0xf0 stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __alloc_object+0x2f/0x270 __create_object+0x1d/0x80 kmem_cache_alloc_node_noprof+0x311/0x3e0 kmalloc_reserve+0x189/0x2b0 __alloc_skb+0x162/0x370 __netdev_alloc_skb+0x7a/0x7c0 __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/0xa80 hrtimer_run_softirq+0x14c/0x310 handle_softirqs+0x1b1/0x770 __irq_exit_rcu+0xc4/0x100 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:put_cpu_partial+0x10a/0x1b0 Code: 24 28 75 5b 49 c7 44 24 28 00 00 00 00 4c 89 e7 48 8d 35 00 00 00 00 e8 84 92 ab ff 4d 85 ed 74 06 e8 6a 64 d5 ff fb 4d 85 f6 <74> 1c 5b 4c 89 f6 48 89 ef 5d 41 5c 41 5d 41 5e e9 c1 fa ff ff 44 RSP: 0018:ffff888040857980 EFLAGS: 00000246 RAX: 000000000022478d RBX: ffffea00003a9a00 RCX: 1ffffffff0fdfeb6 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8184a476 RBP: ffff888008c4f780 R08: 0000000000000001 R09: fffffbfff0fdddf1 R10: ffffffff87eeef8f R11: 0000000000000000 R12: ffff88806cf40350 R13: 0000000000000200 R14: 0000000000000000 R15: ffff88800ea68cb8 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 jbd2__journal_start+0x193/0x6b0 __ext4_journal_start_sb+0x331/0x600 ext4_dirty_inode+0xa5/0x130 __mark_inode_dirty+0x1b6/0xd50 generic_update_time+0xcb/0xf0 file_modified+0x1f0/0x230 ext4_file_write_iter+0x109c/0x18e0 vfs_write+0xbdb/0x10a0 ksys_write+0x122/0x240 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb6835f2b19 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:00007fb680b68188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fb683705f60 RCX: 00007fb6835f2b19 RDX: 0000000000140000 RSI: 0000000020000200 RDI: 0000000000000003 RBP: 00007fb68364cf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd26a77f9f R14: 00007fb680b68300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0x1e/0x30 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 03 80 3c 02 00 75 add 0x7500023c(%rax),%eax 6: 36 48 8b 7b 58 mov %ss:0x58(%rbx),%rdi b: e8 f7 7e 0d 00 callq 0xd7f07 10: 85 c0 test %eax,%eax 12: 74 cf je 0xffffffe3 14: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1b: fc ff df 1e: 48 89 ea mov %rbp,%rdx 21: 48 c1 ea 03 shr $0x3,%rdx 25: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) * 29: 75 1c jne 0x47 <-- trapping instruction 2b: 48 8b 43 58 mov 0x58(%rbx),%rax 2f: 5b pop %rbx 30: 5d pop %rbp 31: e9 a1 9a 72 03 jmpq 0x3729ad7 36: e8 4c 59 77 00 callq 0x775987 3b: eb a0 jmp 0xffffffdd 3d: 48 rex.W 3e: 89 .byte 0x89