FAT-fs (loop5): Directory bread(block 5) failed FAT-fs (loop5): Directory bread(block 6) failed FAT-fs (loop5): Directory bread(block 7) failed FAT-fs (loop5): Directory bread(block 8) failed FAT-fs (loop5): Directory bread(block 9) failed watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.0:4012] Modules linked in: irq event stamp: 5174833 hardirqs last enabled at (5174832): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (5174833): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (5146918): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (5146921): [] asm_call_irq_on_stack+0x12/0x20 CPU: 1 PID: 4012 Comm: syz-executor.0 Not tainted 5.10.237 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 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: 37 00 0f 1f 00 55 48 89 fd 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 7a 12 3e fd 48 89 ef e8 d2 cc 3e fd f6 c7 02 75 10 53 9d <65> ff 0d 54 3f 19 7c 5b 5d e9 cd 0f 37 00 e8 08 fa 5d fd eb e9 66 RSP: 0018:ffff88806cf09b78 EFLAGS: 00000202 RAX: 00000000004ef626 RBX: 0000000000000202 RCX: 1ffffffff0d0dcaa RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff83e92ff8 RBP: ffff888048ab57a0 R08: 0000000000000001 R09: ffffffff8686c6a7 R10: fffffbfff0d0d8d4 R11: 0000000000000001 R12: ffff888048ab5830 R13: ffff888048ab57e0 R14: ffff888008041280 R15: ffff888048ab2800 FS: 00007fc37be3a700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8f24b12cc0 CR3: 000000000ead2000 CR4: 0000000000350ee0 Call Trace: __delete_object+0xb3/0x100 mm/kmemleak.c:672 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] kfree+0xd7/0x340 mm/slub.c:4125 skb_free_head net/core/skbuff.c:606 [inline] skb_release_data+0x604/0x820 net/core/skbuff.c:626 skb_release_all net/core/skbuff.c:680 [inline] __kfree_skb net/core/skbuff.c:694 [inline] consume_skb net/core/skbuff.c:850 [inline] consume_skb+0x110/0x2b0 net/core/skbuff.c:844 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: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:compound_head include/linux/page-flags.h:188 [inline] RIP: 0010:virt_to_head_page include/linux/mm.h:862 [inline] RIP: 0010:qlink_to_cache mm/kasan/quarantine.c:130 [inline] RIP: 0010:qlist_free_all+0x91/0xe0 mm/kasan/quarantine.c:167 Code: 75 cc 48 89 f0 4c 01 e8 72 5a 4c 89 f2 48 2b 15 05 31 5c 03 48 01 d0 48 c1 e8 0c 48 c1 e0 06 48 03 05 e3 30 5c 03 48 8b 50 08 <48> 8d 4a ff 83 e2 01 48 0f 45 c1 48 8b 78 18 eb 93 49 c7 44 24 08 RSP: 0018:ffff888048167418 EFLAGS: 00000286 RAX: ffffea0000353200 RBX: 0000000000000000 RCX: 0000000080200017 RDX: ffffea0000389380 RSI: ffff88800d4c80a0 RDI: 0000000000000000 RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff816cc600 R10: ffff88801bf40d80 R11: 0000000000000001 R12: ffff888048167450 R13: 0000000080000000 R14: ffffffff80000000 R15: ffff88800d4c80a0 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 kmem_cache_zalloc include/linux/slab.h:654 [inline] __kernfs_new_node+0xd4/0x860 fs/kernfs/dir.c:635 kernfs_new_node+0x18d/0x250 fs/kernfs/dir.c:711 __kernfs_create_file+0x51/0x350 fs/kernfs/file.c:985 sysfs_add_file_mode_ns+0x221/0x560 fs/sysfs/file.c:306 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x324/0xb30 fs/sysfs/group.c:149 sysfs_slab_add+0x188/0x200 mm/slub.c:5630 __kmem_cache_create+0x3db/0x520 mm/slub.c:4445 create_cache mm/slab_common.c:255 [inline] kmem_cache_create_usercopy+0x1db/0x2f0 mm/slab_common.c:350 kmem_cache_create+0xd/0x20 mm/slab_common.c:408 create_pid_cachep kernel/pid_namespace.c:54 [inline] create_pid_namespace kernel/pid_namespace.c:97 [inline] copy_pid_ns+0x7df/0x990 kernel/pid_namespace.c:149 create_new_namespaces+0x2b2/0xb20 kernel/nsproxy.c:97 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: 0033:0x7fc37e8c4b19 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:00007fc37be3a188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007fc37e9d7f60 RCX: 00007fc37e8c4b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020000940 RBP: 00007fc37e91ef6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdc13a735f R14: 00007fc37be3a300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline] NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline] NMI backtrace for cpu 0 skipped: idling at default_idle+0xe/0x20 arch/x86/kernel/process.c:711 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 0f 1f 00 nopl (%rax) 3: 55 push %rbp 4: 48 89 fd mov %rdi,%rbp 7: 48 83 c7 18 add $0x18,%rdi b: 53 push %rbx c: 48 89 f3 mov %rsi,%rbx f: 48 8b 74 24 10 mov 0x10(%rsp),%rsi 14: e8 7a 12 3e fd callq 0xfd3e1293 19: 48 89 ef mov %rbp,%rdi 1c: e8 d2 cc 3e fd callq 0xfd3eccf3 21: f6 c7 02 test $0x2,%bh 24: 75 10 jne 0x36 26: 53 push %rbx 27: 9d popfq * 28: 65 ff 0d 54 3f 19 7c decl %gs:0x7c193f54(%rip) # 0x7c193f83 <-- trapping instruction 2f: 5b pop %rbx 30: 5d pop %rbp 31: e9 cd 0f 37 00 jmpq 0x371003 36: e8 08 fa 5d fd callq 0xfd5dfa43 3b: eb e9 jmp 0x26 3d: 66 data16