EXT4-fs error (device loop2): ext4_add_entry:2350: inode #2: comm syz-executor.2: Directory hole found for htree leaf block 0 EXT4-fs error (device loop2): ext4_add_entry:2350: inode #2: comm syz-executor.2: Directory hole found for htree leaf block 0 watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.6:3993] Modules linked in: irq event stamp: 5492175 hardirqs last enabled at (5492174): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (5492175): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (5457616): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (5457619): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 3993 Comm: syz-executor.6 Not tainted 5.10.237 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:168 [inline] RIP: 0010:unwind_next_frame+0x205/0x1a90 arch/x86/kernel/unwind_orc.c:448 Code: 52 ff 39 d6 0f 83 0f 11 00 00 48 ba 00 00 00 00 00 fc ff df 89 f1 48 8d 3c 8d 00 e9 d6 85 49 89 f8 49 c1 e8 03 45 0f b6 04 10 <48> 89 fa 83 e2 07 83 c2 03 44 38 c2 7c 09 45 84 c0 0f 85 67 12 00 RSP: 0018:ffff88806ce09760 EFLAGS: 00000212 RAX: 0000000000000000 RBX: 0000000000000002 RCX: 000000000002c47a RDX: dffffc0000000000 RSI: 000000000002c47a RDI: ffffffff85e1fae8 RBP: ffff88806ce0986d R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000032042 R11: 1ffff1100d9c12f4 R12: ffff88806ce09880 R13: ffff88806ce09838 R14: 1ffff1100d9c12f4 R15: ffffffff83c47aef FS: 00007f03a7e89700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffdc5695ba8 CR3: 000000001ceda000 CR4: 0000000000350ef0 Call Trace: arch_stack_walk+0x83/0xf0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48 kasan_set_track+0x1c/0x30 mm/kasan/common.c:56 kasan_set_free_info+0x1b/0x30 mm/kasan/generic.c:355 __kasan_slab_free+0x110/0x160 mm/kasan/common.c:422 slab_free_hook mm/slub.c:1542 [inline] slab_free_freelist_hook+0xa9/0x180 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:stack_depot_save+0x140/0x400 lib/stackdepot.c:318 Code: 8b 74 c5 18 49 39 34 c4 75 db 48 83 c0 01 49 39 c6 75 ec 48 8b 7c 24 08 48 85 ff 74 0a be 02 00 00 00 e8 b3 9f 68 ff 8b 45 10 <48> 8b 4c 24 10 65 48 2b 0c 25 28 00 00 00 0f 85 99 02 00 00 48 83 RSP: 0018:ffff88804837f240 EFLAGS: 00000246 RAX: 00000000b1e001b5 RBX: 00000000c2549a2e RCX: 1ffffffff0d0edba RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff88804834d8f0 R08: 0000000000000001 R09: ffffffff8686c6bf R10: fffffbfff0d0d8d7 R11: 0000000000000001 R12: ffff88804837f290 R13: 0000000000000018 R14: 00000000000000e0 R15: 0000000000049a2e kasan_save_stack+0x32/0x40 mm/kasan/common.c:50 kasan_set_track+0x1c/0x30 mm/kasan/common.c:56 kasan_set_free_info+0x1b/0x30 mm/kasan/generic.c:355 __kasan_slab_free+0x110/0x160 mm/kasan/common.c:422 slab_free_hook mm/slub.c:1542 [inline] slab_free_freelist_hook+0xa9/0x180 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 netlink_broadcast_filtered+0x336/0xe00 net/netlink/af_netlink.c:1517 netlink_broadcast net/netlink/af_netlink.c:1539 [inline] nlmsg_multicast include/net/netlink.h:1033 [inline] nlmsg_notify+0x94/0x290 net/netlink/af_netlink.c:2528 rtnl_notify net/core/rtnetlink.c:737 [inline] rtmsg_ifinfo_send net/core/rtnetlink.c:3868 [inline] rtmsg_ifinfo_event net/core/rtnetlink.c:3883 [inline] rtmsg_ifinfo_event net/core/rtnetlink.c:3871 [inline] rtmsg_ifinfo+0xf5/0x120 net/core/rtnetlink.c:3889 register_netdevice+0x11bd/0x1480 net/core/dev.c:10094 register_netdev+0x2d/0x50 net/core/dev.c:10173 loopback_net_init+0x76/0x170 drivers/net/loopback.c:216 ops_init+0xbb/0x6b0 net/core/net_namespace.c:156 setup_net+0x2f4/0x900 net/core/net_namespace.c:348 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: 0033:0x7f03aa913b19 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:00007f03a7e89188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f03aaa26f60 RCX: 00007f03aa913b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020000740 RBP: 00007f03aa96df6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff3b2b37df R14: 00007f03a7e89300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline] NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline] NMI backtrace for cpu 1 skipped: idling at default_idle+0xe/0x20 arch/x86/kernel/process.c:711 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 39 d6 cmp %edx,%esi 2: 0f 83 0f 11 00 00 jae 0x1117 8: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx f: fc ff df 12: 89 f1 mov %esi,%ecx 14: 48 8d 3c 8d 00 e9 d6 lea -0x7a291700(,%rcx,4),%rdi 1b: 85 1c: 49 89 f8 mov %rdi,%r8 1f: 49 c1 e8 03 shr $0x3,%r8 23: 45 0f b6 04 10 movzbl (%r8,%rdx,1),%r8d * 28: 48 89 fa mov %rdi,%rdx <-- trapping instruction 2b: 83 e2 07 and $0x7,%edx 2e: 83 c2 03 add $0x3,%edx 31: 44 38 c2 cmp %r8b,%dl 34: 7c 09 jl 0x3f 36: 45 84 c0 test %r8b,%r8b 39: 0f .byte 0xf 3a: 85 67 12 test %esp,0x12(%rdi)