watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.7:5389] Modules linked in: irq event stamp: 3977191 hardirqs last enabled at (3977190): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (3977191): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1094 softirqs last enabled at (3965764): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (3965767): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 5389 Comm: syz-executor.7 Not tainted 5.10.223 #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:162 [inline] RIP: 0010:unwind_next_frame+0x1dd/0x1a90 arch/x86/kernel/unwind_orc.c:448 Code: 57 04 00 00 49 81 ff 82 40 20 84 0f 83 4a 04 00 00 44 8b 15 25 8a b8 03 4c 89 fe 48 81 ee 00 00 00 81 48 c1 ee 08 41 8d 52 ff <39> d6 0f 83 0f 11 00 00 48 ba 00 00 00 00 00 fc ff df 89 f1 48 8d RSP: 0018:ffff88806ce09670 EFLAGS: 00000212 RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffffff84eb8d20 RDX: 0000000000032041 RSI: 000000000001c986 RDI: ffff88806ce09748 RBP: ffff88806ce0977d R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000032042 R11: 1ffff1100d9c12d6 R12: ffff88806ce09790 R13: ffff88806ce09748 R14: 1ffff1100d9c12d6 R15: ffffffff82c98621 FS: 00007f47dfffb700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056357a6ce030 CR3: 000000004853a000 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 mm/kasan/common.c:56 [inline] __kasan_kmalloc.constprop.0+0xc9/0xd0 mm/kasan/common.c:461 slab_post_alloc_hook mm/slab.h:532 [inline] slab_alloc_node mm/slub.c:2896 [inline] kmem_cache_alloc_node+0x14b/0x330 mm/slub.c:2932 __alloc_skb+0x6d/0x5b0 net/core/skbuff.c:199 skb_copy+0x183/0x350 net/core/skbuff.c:1529 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb1d/0x13d0 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:1584 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1648 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1665 __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:1094 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:ffff888049977860 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 00000000000c000c RCX: ffff888049515b40 RDX: ffff888049515b40 RSI: ffffea0001254540 RDI: ffff888008805a00 RBP: ffff888049977940 R08: ffff888008805a00 R09: ffffffff816c9615 R10: ffff888049515b40 R11: 0000000000000001 R12: ffffea0001254540 R13: 0000000080000000 R14: ffff888008805a00 R15: ffff88800e1fdc00 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 kmem_cache_zalloc include/linux/slab.h:654 [inline] alloc_buffer_head+0x20/0x110 fs/buffer.c:3336 alloc_page_buffers+0x14d/0x700 fs/buffer.c:856 grow_dev_page fs/buffer.c:993 [inline] grow_buffers fs/buffer.c:1043 [inline] __getblk_slow+0x2e5/0x7f0 fs/buffer.c:1070 __getblk_gfp+0x74/0x80 fs/buffer.c:1354 sb_getblk include/linux/buffer_head.h:359 [inline] fat_zeroed_cluster.constprop.0+0x162/0x720 fs/fat/dir.c:1092 fat_alloc_new_dir+0x8b1/0xd00 fs/fat/dir.c:1185 vfat_mkdir+0x105/0x440 fs/fat/namei_vfat.c:860 vfs_mkdir+0x493/0x750 fs/namei.c:3706 do_mkdirat+0x150/0x2b0 fs/namei.c:3728 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f47e2a85b19 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:00007f47dfffb188 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00007f47e2b98f60 RCX: 00007f47e2a85b19 RDX: 0000000000000002 RSI: 0000000020000280 RDI: 0000000000000005 RBP: 00007f47e2adff6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdae64933f R14: 00007f47dfffb300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 5378 Comm: syz-executor.0 Not tainted 5.10.223 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__lock_acquire+0x8a/0x5b00 kernel/locking/lockdep.c:4813 Code: 24 08 48 89 44 24 30 48 01 d0 48 c7 84 24 98 00 00 00 f0 c9 26 81 c7 00 f1 f1 f1 f1 c7 40 04 f1 f1 04 f2 c7 40 08 00 f3 f3 f3 <65> 48 8b 04 25 28 00 00 00 48 89 84 24 00 01 00 00 31 c0 48 c7 c0 RSP: 0018:ffff88806cf09618 EFLAGS: 00000086 RAX: ffffed100d9e12d4 RBX: 1ffff1100d9e12f1 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff88806cf2ea58 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000046 R11: 0000000000000001 R12: ffff88804d524ec0 R13: 0000000000000000 R14: ffff88806cf2ea58 R15: 0000000000000000 FS: 00007f9573edf700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2cc2c000 CR3: 000000004888c000 CR4: 0000000000350ee0 Call Trace: lock_acquire kernel/locking/lockdep.c:5566 [inline] lock_acquire+0x197/0x470 kernel/locking/lockdep.c:5531 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x36/0x60 kernel/locking/spinlock.c:159 hrtimer_interrupt+0xcf/0x9b0 kernel/time/hrtimer.c:1691 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:memory_is_nonzero mm/kasan/generic.c:107 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:134 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:165 [inline] RIP: 0010:check_memory_region_inline mm/kasan/generic.c:183 [inline] RIP: 0010:check_memory_region+0x64/0x1f0 mm/kasan/generic.c:192 Code: 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 ca 48 c1 ed 03 49 c1 ea 03 48 01 c5 49 01 c2 48 89 e8 49 8d 5a 01 48 89 da 48 29 ea <48> 83 fa 10 0f 8e 14 01 00 00 41 89 eb 41 83 e3 07 0f 85 a9 00 00 RSP: 0018:ffff88806cf09a18 EFLAGS: 00000202 RAX: fffffbfff0f40830 RBX: fffffbfff0f40831 RCX: ffffffff81279957 RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff87a04180 RBP: fffffbfff0f40830 R08: 0000000000000000 R09: ffffffff87a04183 R10: fffffbfff0f40830 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0f40830 R14: 0000000000000001 R15: 1ffff1100d9e1348 instrument_atomic_read include/linux/instrumented.h:71 [inline] atomic_read include/asm-generic/atomic-instrumented.h:27 [inline] virt_spin_lock arch/x86/include/asm/qspinlock.h:99 [inline] queued_spin_lock_slowpath+0xa7/0x8c0 kernel/locking/qspinlock.c:326 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+0x695/0x13d0 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:1584 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1648 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1665 __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:1094 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:slab_post_alloc_hook mm/slab.h:532 [inline] RIP: 0010:slab_alloc_node mm/slub.c:2896 [inline] RIP: 0010:slab_alloc mm/slub.c:2904 [inline] RIP: 0010:__kmalloc_track_caller+0x15c/0x370 mm/slub.c:4465 Code: 00 00 41 f7 c5 00 01 00 00 0f 85 06 01 00 00 44 8b 25 28 16 fb 03 4c 89 c6 48 89 ef 45 21 ec 44 89 e2 e8 67 2a 00 00 8b 75 1c <48> 89 44 24 10 48 89 c7 f6 45 0a 80 75 0d 44 89 e1 ba 01 00 00 00 RSP: 0018:ffff88804eae7bc0 EFLAGS: 00000286 RAX: ffff88800cdc0800 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 00000000e5338bfd RSI: 0000000000000400 RDI: 0000000000000000 RBP: ffff888008041140 R08: 00000000d6dd428c R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000cc0 R13: 0000000000000cc0 R14: 0000000000000380 R15: 0000000000000000 kmemdup+0x23/0x50 mm/util.c:128 kmemdup include/linux/string.h:465 [inline] netfilter_log_sysctl_init net/netfilter/nf_log.c:474 [inline] nf_log_net_init+0x9c/0x370 net/netfilter/nf_log.c:550 ops_init+0xbb/0x6b0 net/core/net_namespace.c:156 setup_net+0x2d8/0x810 net/core/net_namespace.c:354 copy_net_ns+0x2c0/0x5d0 net/core/net_namespace.c:495 create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0xbd/0x1f0 kernel/nsproxy.c:231 ksys_unshare+0x449/0x8a0 kernel/fork.c:3003 __do_sys_unshare kernel/fork.c:3071 [inline] __se_sys_unshare kernel/fork.c:3069 [inline] __x64_sys_unshare+0x2d/0x40 kernel/fork.c:3069 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f9576969b19 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:00007f9573edf188 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00007f9576a7cf60 RCX: 00007f9576969b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000048020200 RBP: 00007f95769c3f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe5c3ab47f R14: 00007f9573edf300 R15: 0000000000022000 netlink: 'syz-executor.5': attribute type 17 has an invalid length. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=5424 comm=syz-executor.5 ---------------- Code disassembly (best guess): 0: 57 push %rdi 1: 04 00 add $0x0,%al 3: 00 49 81 add %cl,-0x7f(%rcx) 6: ff 82 40 20 84 0f incl 0xf842040(%rdx) c: 83 4a 04 00 orl $0x0,0x4(%rdx) 10: 00 44 8b 15 add %al,0x15(%rbx,%rcx,4) 14: 25 8a b8 03 4c and $0x4c03b88a,%eax 19: 89 fe mov %edi,%esi 1b: 48 81 ee 00 00 00 81 sub $0xffffffff81000000,%rsi 22: 48 c1 ee 08 shr $0x8,%rsi 26: 41 8d 52 ff lea -0x1(%r10),%edx * 2a: 39 d6 cmp %edx,%esi <-- trapping instruction 2c: 0f 83 0f 11 00 00 jae 0x1141 32: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 39: fc ff df 3c: 89 f1 mov %esi,%ecx 3e: 48 rex.W 3f: 8d .byte 0x8d