kauditd_printk_skb: 35 callbacks suppressed audit: type=1326 audit(1727773670.908:1367): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5876 comm="syz-executor.6" exe="/syz-executor.6" sig=0 arch=c000003e syscall=18 compat=0 ip=0x7f2344cc2ab7 code=0x7ffc0000 watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.0:5875] Modules linked in: irq event stamp: 5195449 hardirqs last enabled at (5195448): [<ffffffff84000d02>] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (5195449): [<ffffffff83e5e2fb>] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1094 softirqs last enabled at (5129330): [<ffffffff84001092>] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (5129333): [<ffffffff84001092>] asm_call_irq_on_stack+0x12/0x20 CPU: 1 PID: 5875 Comm: syz-executor.0 Not tainted 5.10.226 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:call_rcu+0x2bd/0x9c0 kernel/rcu/tree.c:3051 Code: 85 ab 05 00 00 8b 85 28 01 00 00 65 ff 0d 4b e7 d3 7e a8 02 0f 84 8d 01 00 00 48 83 7c 24 08 00 0f 85 f0 00 00 00 ff 34 24 9d <48> 83 c4 28 5b 5d 41 5c 41 5d 41 5e 41 5f e9 a0 b7 f1 02 4c 89 c7 RSP: 0018:ffff88806cf09bb0 EFLAGS: 00000246 RAX: 00000000004f4644 RBX: ffff88801cde9820 RCX: 1ffffffff0ace561 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff812e8985 RBP: ffff88806cf3c0f0 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000001 R12: 000000000000049c R13: ffff88806cf3c000 R14: ffff88806cf3c0e0 R15: ffff88806cf3c098 FS: 00007f6aded7b700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0bcd9fb718 CR3: 0000000046914000 CR4: 0000000000350ee0 Call Trace: <IRQ> kmemleak_free_recursive include/linux/kmemleak.h:49 [inline] slab_free_hook mm/slub.c:1517 [inline] slab_free_freelist_hook+0x13e/0x180 mm/slub.c:1576 slab_free mm/slub.c:3149 [inline] kmem_cache_free+0xa7/0x2d0 mm/slub.c:3165 kfree_skbmem+0xef/0x1b0 net/core/skbuff.c:637 __kfree_skb net/core/skbuff.c:694 [inline] consume_skb net/core/skbuff.c:849 [inline] consume_skb+0x11d/0x2b0 net/core/skbuff.c:843 mac80211_hwsim_tx_frame+0x15a/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1717 mac80211_hwsim_beacon_tx+0x494/0x940 drivers/net/wireless/mac80211_hwsim.c:1770 __iterate_interfaces+0x1f0/0x550 net/mac80211/util.c:792 ieee80211_iterate_active_interfaces_atomic+0x71/0x1c0 net/mac80211/util.c:828 mac80211_hwsim_beacon+0xd1/0x1d0 drivers/net/wireless/mac80211_hwsim.c:1793 __run_hrtimer kernel/time/hrtimer.c:1586 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1650 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1667 __do_softirq+0x1b8/0x7c9 kernel/softirq.c:298 asm_call_irq_on_stack+0x12/0x20 </IRQ> __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0x80/0xa0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x114/0x1b0 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x43/0xa0 arch/x86/kernel/apic/apic.c:1094 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:__sanitizer_cov_trace_pc+0x30/0x60 kernel/kcov.c:197 Code: 8b 14 25 80 6f 02 00 65 8b 05 ec cf c1 7e a9 00 01 ff 00 74 0f f6 c4 01 74 35 8b 82 fc 13 00 00 85 c0 74 2b 8b 82 d8 13 00 00 <83> f8 02 75 20 48 8b 8a e0 13 00 00 8b 92 dc 13 00 00 48 8b 01 48 RSP: 0018:ffff88804756f910 EFLAGS: 00000246 RAX: 0000000000000002 RBX: ffffffff84497e04 RCX: ffffffff8200cc2a RDX: ffff888048a39a40 RSI: ffffffff8200cb8e RDI: 0000000000000001 RBP: ffff888049502089 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000065 R13: ffff8880495026c0 R14: ffffffff84497e00 R15: 0000000000000003 string_nocheck lib/vsprintf.c:640 [inline] string+0x13e/0x3e0 lib/vsprintf.c:719 vsnprintf+0x9e3/0x1600 lib/vsprintf.c:2651 audit_log_vformat+0x202/0x8b0 kernel/audit.c:1979 audit_log_format+0xc5/0x120 kernel/audit.c:2013 audit_log_d_path+0x30/0x190 kernel/audit.c:2147 audit_log_d_path_exe+0x40/0x70 kernel/audit.c:2221 audit_log_task+0x278/0x310 kernel/auditsc.c:2678 audit_seccomp+0x76/0x200 kernel/auditsc.c:2725 seccomp_log kernel/seccomp.c:773 [inline] __seccomp_filter+0x669/0x1530 kernel/seccomp.c:1016 __secure_computing+0x191/0x2f0 kernel/seccomp.c:1082 syscall_trace_enter.constprop.0+0x84/0x1e0 kernel/entry/common.c:58 do_syscall_64+0xf/0x40 arch/x86/entry/common.c:41 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f6ae17b8ab7 Code: 08 89 3c 24 48 89 4c 24 18 e8 e5 f8 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 48 8b 74 24 08 8b 3c 24 b8 12 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 04 24 e8 15 f9 ff ff 48 8b RSP: 002b:00007f6aded7af20 EFLAGS: 00000293 ORIG_RAX: 0000000000000012 RAX: ffffffffffffffda RBX: 00007f6ae184f970 RCX: 00007f6ae17b8ab7 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006 RBP: 0000000000000005 R08: 0000000000000000 R09: 0000034446505853 R10: 00000000007ffff8 R11: 0000000000000293 R12: 0000000000000006 R13: 0000000000000006 R14: 0000000020000470 R15: 0000000000000002 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 5877 Comm: syz-executor.6 Not tainted 5.10.226 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:check_kcov_mode kernel/kcov.c:163 [inline] RIP: 0010:write_comp_data+0x25/0x80 kernel/kcov.c:218 Code: 00 00 00 00 00 49 89 f2 65 8b 05 e6 d7 c1 7e 65 48 8b 34 25 80 6f 02 00 a9 00 01 ff 00 74 0f f6 c4 01 74 59 8b 86 fc 13 00 00 <85> c0 74 4f 8b 86 d8 13 00 00 83 f8 03 75 44 48 8b 86 e0 13 00 00 RSP: 0018:ffff88806ce095f0 EFLAGS: 00000002 RAX: 0000000000000000 RBX: 00000000000c20ac RCX: ffffffff8131aed5 RDX: 0000000000000000 RSI: ffff888048a3cec0 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888036547158 R13: 0000000000002710 R14: 0000000000000001 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9541216c68 CR3: 0000000015a2c000 CR4: 0000000000350ef0 Call Trace: <NMI> </NMI> <IRQ> ktime_get+0xb5/0x1f0 kernel/time/timekeeping.c:833 hrtimer_forward_now include/linux/hrtimer.h:503 [inline] perf_swevent_hrtimer+0x244/0x3f0 kernel/events/core.c:10498 __run_hrtimer kernel/time/hrtimer.c:1586 [inline] __hrtimer_run_queues+0x1ca/0xb40 kernel/time/hrtimer.c:1650 hrtimer_interrupt+0x2fd/0x9b0 kernel/time/hrtimer.c:1712 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1083 [inline] __sysvec_apic_timer_interrupt+0xfb/0x310 arch/x86/kernel/apic/apic.c:1100 run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:91 [inline] sysvec_apic_timer_interrupt+0x3e/0xa0 arch/x86/kernel/apic/apic.c:1094 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:__preempt_count_sub arch/x86/include/asm/preempt.h:84 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x25/0x40 kernel/locking/spinlock.c:191 Code: 38 00 0f 1f 00 55 48 89 fd 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 9a a1 3f fd 48 89 ef e8 62 5b 40 fd f6 c7 02 75 10 53 9d <65> ff 0d 34 de 1a 7c 5b 5d e9 ad ae 38 00 e8 a8 7c 5f fd eb e9 66 RSP: 0018:ffff88806ce09aa0 EFLAGS: 00000246 RAX: 0000000000244244 RBX: 0000000000000246 RCX: 1ffffffff0d0d512 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff83e79118 RBP: ffffffff850a6880 R08: 0000000000000001 R09: ffffffff868686e7 R10: fffffbfff0d0d0dc R11: 0000000000000001 R12: 0000000000000a20 R13: 0000000000000a20 R14: 00000000ffffffff R15: 0000000000000000 kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] slab_post_alloc_hook mm/slab.h:534 [inline] slab_alloc_node mm/slub.c:2896 [inline] kmem_cache_alloc_node+0x169/0x330 mm/slub.c:2932 __alloc_skb+0x6d/0x5b0 net/core/skbuff.c:199 __netdev_alloc_skb+0x6e/0x360 net/core/skbuff.c:447 netdev_alloc_skb include/linux/skbuff.h:2857 [inline] dev_alloc_skb include/linux/skbuff.h:2870 [inline] __ieee80211_beacon_get+0x3af/0x1440 net/mac80211/tx.c:4876 ieee80211_beacon_get_tim+0x88/0x9f0 net/mac80211/tx.c:4990 ieee80211_beacon_get include/net/mac80211.h:4912 [inline] mac80211_hwsim_beacon_tx+0x111/0x940 drivers/net/wireless/mac80211_hwsim.c:1740 __iterate_interfaces+0x1f0/0x550 net/mac80211/util.c:792 ieee80211_iterate_active_interfaces_atomic+0x71/0x1c0 net/mac80211/util.c:828 mac80211_hwsim_beacon+0xd1/0x1d0 drivers/net/wireless/mac80211_hwsim.c:1793 __run_hrtimer kernel/time/hrtimer.c:1586 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1650 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1667 __do_softirq+0x1b8/0x7c9 kernel/softirq.c:298 asm_call_irq_on_stack+0x12/0x20 </IRQ> __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0x80/0xa0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x114/0x1b0 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x43/0xa0 arch/x86/kernel/apic/apic.c:1094 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:193 Code: ff ff b9 ff ff ff ff b8 08 00 00 00 4d 8b 17 49 8b 16 48 0f bd c8 48 63 c9 e9 5e ff ff ff 4c 01 d2 49 89 17 e9 cd fd ff ff 90 <48> 8b 34 24 65 48 8b 14 25 80 6f 02 00 65 8b 05 ec cf c1 7e a9 00 RSP: 0018:ffff88804642f758 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 8000000000000007 RCX: ffffffff815fe2d3 RDX: 0000000000000000 RSI: ffff888048a3cec0 RDI: 0000000000000005 RBP: ffffea0000ea0700 R08: 0000000000000000 R09: ffff888048a3cec7 R10: 0000000000000000 R11: 0000000000000001 R12: ffffea0000ea0708 R13: ffff88800d1184d0 R14: dffffc0000000000 R15: 00007f234429b000 pte_young arch/x86/include/asm/pgtable.h:160 [inline] zap_pte_range mm/memory.c:1282 [inline] zap_pmd_range mm/memory.c:1404 [inline] zap_pud_range mm/memory.c:1433 [inline] zap_p4d_range mm/memory.c:1454 [inline] unmap_page_range+0xf74/0x1fe0 mm/memory.c:1475 unmap_single_vma+0x198/0x300 mm/memory.c:1520 unmap_vmas+0x16d/0x300 mm/memory.c:1552 exit_mmap+0x27f/0x4f0 mm/mmap.c:3235 __mmput kernel/fork.c:1101 [inline] mmput+0xca/0x340 kernel/fork.c:1122 exit_mm kernel/exit.c:536 [inline] do_exit+0xa96/0x2600 kernel/exit.c:847 do_group_exit+0x125/0x310 kernel/exit.c:982 get_signal+0x4bc/0x2350 kernel/signal.c:2759 arch_do_signal_or_restart+0x2b7/0x1990 arch/x86/kernel/signal.c:805 handle_signal_work kernel/entry/common.c:145 [inline] exit_to_user_mode_loop kernel/entry/common.c:169 [inline] exit_to_user_mode_prepare+0x10f/0x190 kernel/entry/common.c:199 syscall_exit_to_user_mode+0x38/0x1d0 kernel/entry/common.c:274 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f2344cc2ab7 Code: Unable to access opcode bytes at RIP 0x7f2344cc2a8d. RSP: 002b:00007f2342284f20 EFLAGS: 00000293 ORIG_RAX: 0000000000000012 RAX: 0000000000000000 RBX: 00007f2344d59970 RCX: 00007f2344cc2ab7 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 0000000000000005 R08: 0000000000000000 R09: 0000034446505853 R10: 00000000000004e0 R11: 0000000000000293 R12: 0000000000000005 R13: 0000000000000005 R14: 0000000020000458 R15: 0000000000000001 audit: type=1326 audit(1727773670.806:1365): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5872 comm="syz-executor.0" exe="/syz-executor.0" sig=0 arch=c000003e syscall=18 compat=0 ip=0x7f6ae17b8ab7 code=0x7ffc0000 ---------------- Code disassembly (best guess): 0: 85 ab 05 00 00 8b test %ebp,-0x74fffffb(%rbx) 6: 85 28 test %ebp,(%rax) 8: 01 00 add %eax,(%rax) a: 00 65 ff add %ah,-0x1(%rbp) d: 0d 4b e7 d3 7e or $0x7ed3e74b,%eax 12: a8 02 test $0x2,%al 14: 0f 84 8d 01 00 00 je 0x1a7 1a: 48 83 7c 24 08 00 cmpq $0x0,0x8(%rsp) 20: 0f 85 f0 00 00 00 jne 0x116 26: ff 34 24 pushq (%rsp) 29: 9d popfq * 2a: 48 83 c4 28 add $0x28,%rsp <-- trapping instruction 2e: 5b pop %rbx 2f: 5d pop %rbp 30: 41 5c pop %r12 32: 41 5d pop %r13 34: 41 5e pop %r14 36: 41 5f pop %r15 38: e9 a0 b7 f1 02 jmpq 0x2f1b7dd 3d: 4c 89 c7 mov %r8,%rdi