audit: type=1400 audit(1734775987.373:13): avc: denied { write } for pid=17641 comm="syz-executor.6" 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 26s! [syz-executor.6:17643] Modules linked in: irq event stamp: 2596833 hardirqs last enabled at (2596832): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2596833): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2539844): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2539855): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 17643 Comm: syz-executor.6 Not tainted 6.13.0-rc3-next-20241220 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:stack_trace_consume_entry+0x26/0x170 Code: 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 48 c1 ea 03 48 83 ec 08 0f b6 04 02 <84> c0 74 08 3c 03 0f 8e e7 00 00 00 48 8d 7b 08 8b 6b 10 48 b8 00 RSP: 0018:ffff88806cf09698 EFLAGS: 00000292 RAX: 0000000000000000 RBX: ffff88806cf09780 RCX: ffffffff8679ba01 RDX: 1ffff1100d9e12f2 RSI: ffffffff84a81150 RDI: ffff88806cf09790 RBP: ffff88806cf09750 R08: ffffffff8679ba3e R09: ffff88806cf096f8 R10: 000000000003aab6 R11: 00000000000084a5 R12: ffff88806cf09780 R13: 0000000000000000 R14: ffff88801c8fb780 R15: 0000000000000820 FS: 00007f2e02077700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2e04c2b558 CR3: 000000003bbf6000 CR4: 0000000000350ef0 Call Trace: arch_stack_walk+0x77/0xf0 stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc_node_noprof+0x14c/0x3e0 __alloc_skb+0x2ad/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:_raw_spin_unlock_irqrestore+0x34/0x50 Code: c7 18 53 48 89 f3 48 8b 74 24 10 e8 f6 f1 a5 fc 48 89 ef e8 7e 60 a6 fc 80 e7 02 74 06 e8 b4 77 cf fc fb 65 ff 0d 54 5b 59 7b <74> 07 5b 5d e9 a3 1e 00 00 0f 1f 44 00 00 5b 5d e9 97 1e 00 00 0f RSP: 0018:ffff88804225fb38 EFLAGS: 00000246 RAX: 000000000026c14d RBX: 0000000000000246 RCX: 1ffffffff0c7f249 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff84aa4bac RBP: ffffffff85c67cc0 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff863fcc97 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000246 R14: 0000000000000000 R15: ffffffff821f3c50 __wake_up+0x3f/0x60 audit_log_end+0x10d/0x2b0 common_lsm_audit+0x2c6/0x1ff0 slow_avc_audit+0x13b/0x1d0 avc_has_perm+0x170/0x1a0 security_perf_event_write+0x38/0x80 perf_ioctl+0x43/0xb0 __x64_sys_ioctl+0x1a7/0x210 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2e04b22b19 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:00007f2e02077188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f2e04c36020 RCX: 00007f2e04b22b19 RDX: 0000000020000140 RSI: 0000000040046629 RDI: 0000000000000004 RBP: 00007f2e04b7cf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff32950bcf R14: 00007f2e02077300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0x1e/0x30 loop7: detected capacity change from 0 to 512 EXT4-fs error (device loop7): __ext4_iget:4984: inode #2: block 65280: comm syz-executor.7: invalid block EXT4-fs (loop7): get root inode failed EXT4-fs (loop7): mount failed loop7: detected capacity change from 0 to 512 EXT4-fs error (device loop7): __ext4_iget:4984: inode #2: block 65280: comm syz-executor.7: invalid block EXT4-fs (loop7): get root inode failed EXT4-fs (loop7): mount failed loop1: detected capacity change from 0 to 8 vfat: Unknown parameter 'YcpAe-F5Z":;٭-_ZWwX?dx UD22HǶBt5ApX`I.݊UāC0AMhKxAEG.4[%ß){c"g(?G$pŸa C& #&DuY1mNNOt#e' loop1: detected capacity change from 0 to 8 vfat: Unknown parameter 'YcpAe-F5Z":;٭-_ZWwX?dx UD22HǶBt5ApX`I.݊UāC0AMhKxAEG.4[%ß){c"g(?G$pŸa C& #&DuY1mNNOt#e' loop6: detected capacity change from 0 to 256 msdos: Unknown parameter 'dtsDV' loop6: detected capacity change from 0 to 256 msdos: Unknown parameter 'dtsDV' ---------------- Code disassembly (best guess): 0: 90 nop 1: 90 nop 2: 90 nop 3: 90 nop 4: f3 0f 1e fa endbr64 8: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax f: fc ff df 12: 55 push %rbp 13: 53 push %rbx 14: 48 89 fb mov %rdi,%rbx 17: 48 83 c7 10 add $0x10,%rdi 1b: 48 89 fa mov %rdi,%rdx 1e: 48 c1 ea 03 shr $0x3,%rdx 22: 48 83 ec 08 sub $0x8,%rsp 26: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax * 2a: 84 c0 test %al,%al <-- trapping instruction 2c: 74 08 je 0x36 2e: 3c 03 cmp $0x3,%al 30: 0f 8e e7 00 00 00 jle 0x11d 36: 48 8d 7b 08 lea 0x8(%rbx),%rdi 3a: 8b 6b 10 mov 0x10(%rbx),%ebp 3d: 48 rex.W 3e: b8 .byte 0xb8