audit: type=1400 audit(1748958971.769:11): avc: denied { write } for pid=4027 comm="syz-executor.1" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 process 'syz-executor.6' launched '/dev/fd/-1' with NULL argv: empty string added syz-executor.2 (4020) used greatest stack depth: 23656 bytes left watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.1:4058] Modules linked in: irq event stamp: 6230739 hardirqs last enabled at (6230738): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (6230739): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (6194980): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (6194983): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 4058 Comm: syz-executor.1 Not tainted 5.10.237 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:slab_post_alloc_hook mm/slab.h:530 [inline] RIP: 0010:slab_alloc_node mm/slub.c:2896 [inline] RIP: 0010:__kmalloc_node_track_caller+0x17f/0x3b0 mm/slub.c:4496 Code: 44 24 10 0f 18 0c 03 0f 1f 44 00 00 0f 1f 44 00 00 41 f7 c4 00 01 00 00 0f 85 06 01 00 00 8b 1d 57 2a fb 03 4c 89 c6 48 89 ef <44> 21 e3 89 da e8 47 3f 00 00 8b 75 1c 48 89 44 24 10 48 89 c7 f6 RSP: 0018:ffff88806ce09ab8 EFLAGS: 00000246 RAX: 0000000000000100 RBX: 0000000000ffffff RCX: 0000000000005941 RDX: 0000000000005940 RSI: ffff888048165400 RDI: ffff888008041280 RBP: ffff888008041280 R08: ffff888048165400 R09: 0000000000000200 R10: fffffbfff0d0d8dd R11: 0000000000000001 R12: 0000000000082a20 R13: 0000000000000200 R14: 00000000ffffffff R15: 0000000000000000 FS: 00007f369083d700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4ac1c70998 CR3: 0000000017514000 CR4: 0000000000350ef0 Call Trace: __kmalloc_reserve net/core/skbuff.c:144 [inline] __alloc_skb+0xb1/0x5b0 net/core/skbuff.c:212 skb_copy+0x183/0x350 net/core/skbuff.c:1530 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb50/0x1410 drivers/net/wireless/mac80211_hwsim.c:1499 mac80211_hwsim_tx_frame+0x152/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1716 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:1588 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1652 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1669 __do_softirq+0x1b8/0x7c9 kernel/softirq.c:298 asm_call_irq_on_stack+0x12/0x20 __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:1106 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:__slab_free+0x61/0x5d0 mm/slub.c:2989 Code: 00 00 00 31 c0 0f 1f 44 00 00 49 8d 44 24 20 41 89 db 4d 89 f0 48 89 44 24 48 4c 89 e0 83 e0 0f 48 89 44 24 50 49 8b 5c 24 28 <4d> 8b 6c 24 20 41 8b 40 28 41 89 df 48 89 9c 24 88 00 00 00 4d 89 RSP: 0018:ffff88804777f4c0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000080170014 RCX: ffff88800cb1c718 RDX: ffff88800cb1c718 RSI: ffffea000032c600 RDI: ffff8880083fb780 RBP: ffff88804777f598 R08: ffff8880083fb780 R09: ffffffff816cc605 R10: ffff88800cb1c718 R11: 0000000000000001 R12: ffffea000032c600 R13: 0000000080000000 R14: ffff8880083fb780 R15: ffff888045c44000 qlink_free mm/kasan/quarantine.c:151 [inline] qlist_free_all+0x59/0xe0 mm/kasan/quarantine.c:170 quarantine_reduce+0x184/0x210 mm/kasan/quarantine.c:267 __kasan_kmalloc.constprop.0+0xa2/0xd0 mm/kasan/common.c:442 slab_post_alloc_hook mm/slab.h:532 [inline] slab_alloc_node mm/slub.c:2896 [inline] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc+0x13b/0x310 mm/slub.c:2909 mem_pool_alloc mm/kmemleak.c:423 [inline] create_object.isra.0+0x3a/0xa20 mm/kmemleak.c:578 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:200 alloc_skb include/linux/skbuff.h:1099 [inline] alloc_uevent_skb+0x7b/0x210 lib/kobject_uevent.c:290 uevent_net_broadcast_tagged lib/kobject_uevent.c:351 [inline] kobject_uevent_net_broadcast lib/kobject_uevent.c:412 [inline] kobject_uevent_env+0xce1/0xfd0 lib/kobject_uevent.c:608 nfs_netns_sysfs_destroy+0x48/0xa0 fs/nfs/sysfs.c:186 nfs_clients_exit+0x56/0x150 fs/nfs/client.c:1125 ops_exit_list+0xb3/0x180 net/core/net_namespace.c:190 setup_net+0x5af/0x900 net/core/net_namespace.c:380 copy_net_ns+0x2c0/0x5d0 net/core/net_namespace.c:518 create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110 copy_namespaces+0x3fb/0x4f0 kernel/nsproxy.c:179 copy_process+0x385b/0x7800 kernel/fork.c:2129 kernel_clone+0xe7/0x980 kernel/fork.c:2506 __do_sys_clone3+0x1e5/0x320 kernel/fork.c:2781 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f369332ab19 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:00007f369083d188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f369343e1a0 RCX: 00007f369332ab19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020000200 RBP: 00007f3693384f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffd98729ef R14: 00007f369083d300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.10.237 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:cpu_relax arch/x86/include/asm/vdso/processor.h:19 [inline] RIP: 0010:virt_spin_lock arch/x86/include/asm/qspinlock.h:100 [inline] RIP: 0010:queued_spin_lock_slowpath+0x122/0x8c0 kernel/locking/qspinlock.c:326 Code: 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 09 07 00 00 48 81 c4 88 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 b0 93 f8 02 f3 90 73 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e1 00 00 RSP: 0018:ffff88806cf09a38 EFLAGS: 00000202 RAX: 0000000000000000 RBX: ffffffff87a08080 RCX: ffffffff8127ab97 RDX: fffffbfff0f41011 RSI: 0000000000000004 RDI: ffffffff87a08080 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff87a08083 R10: fffffbfff0f41010 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0f41010 R14: 0000000000000001 R15: 1ffff1100d9e1348 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005574ecb3552c CR3: 0000000004e26000 CR4: 0000000000350ee0 Call Trace: queued_spin_lock include/asm-generic/qspinlock.h:85 [inline] do_raw_spin_lock+0x1dc/0x260 kernel/locking/spinlock_debug.c:113 spin_lock include/linux/spinlock.h:354 [inline] mac80211_hwsim_tx_frame_no_nl.isra.0+0x6c8/0x1410 drivers/net/wireless/mac80211_hwsim.c:1450 mac80211_hwsim_tx_frame+0x152/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1716 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:1588 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1652 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1669 __do_softirq+0x1b8/0x7c9 kernel/softirq.c:298 asm_call_irq_on_stack+0x12/0x20 __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:1106 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:default_idle+0xe/0x20 arch/x86/kernel/process.c:712 Code: 4e ff ff ff 4c 89 e7 e8 40 af 83 fd eb 8f 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 e9 07 00 00 00 0f 00 2d 24 2c 59 00 fb f4 1d 2c 37 00 cc cc cc cc cc cc cc cc cc cc cc cc cc 41 55 41 54 RSP: 0018:ffff888008987e70 EFLAGS: 00000202 RAX: ffffffff83e91390 RBX: 0000000000000001 RCX: ffffffff83e78f2c RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff83e91998 RBP: 0000000000000001 R08: 0000000000000001 R09: ffff88806cf3c12b R10: ffffed100d9e7825 R11: 0000000000000001 R12: 0000000000000001 R13: ffffffff85678748 R14: 0000000000000000 R15: dffffc0000000000 default_idle_call+0xbf/0x2c0 kernel/sched/idle.c:112 cpuidle_idle_call kernel/sched/idle.c:194 [inline] do_idle+0x3b3/0x520 kernel/sched/idle.c:306 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:402 secondary_startup_64_no_verify+0xbe/0xcb ---------------- Code disassembly (best guess): 0: 44 24 10 rex.R and $0x10,%al 3: 0f 18 0c 03 prefetcht0 (%rbx,%rax,1) 7: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) c: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 11: 41 f7 c4 00 01 00 00 test $0x100,%r12d 18: 0f 85 06 01 00 00 jne 0x124 1e: 8b 1d 57 2a fb 03 mov 0x3fb2a57(%rip),%ebx # 0x3fb2a7b 24: 4c 89 c6 mov %r8,%rsi 27: 48 89 ef mov %rbp,%rdi * 2a: 44 21 e3 and %r12d,%ebx <-- trapping instruction 2d: 89 da mov %ebx,%edx 2f: e8 47 3f 00 00 callq 0x3f7b 34: 8b 75 1c mov 0x1c(%rbp),%esi 37: 48 89 44 24 10 mov %rax,0x10(%rsp) 3c: 48 89 c7 mov %rax,%rdi 3f: f6 .byte 0xf6