netlink: 'syz-executor.1': attribute type 33 has an invalid length. netlink: 'syz-executor.1': attribute type 33 has an invalid length. Process accounting resumed watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.7:6041] Modules linked in: irq event stamp: 10573091 hardirqs last enabled at (10573090): [] asm_sysvec_irq_work+0x12/0x20 arch/x86/include/asm/idtentry.h:661 hardirqs last disabled at (10573091): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (10570912): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (10570915): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 6041 Comm: syz-executor.7 Not tainted 5.10.246 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:get_freepointer mm/slub.c:279 [inline] RIP: 0010:slab_free_freelist_hook+0x5f/0x180 mm/slub.c:1566 Code: 0f 44 ed eb 22 8b 43 28 49 8b 14 24 49 89 14 07 48 8b 04 24 4d 89 3c 24 48 83 38 00 0f 84 06 01 00 00 4d 39 ef 74 5e 8b 43 28 <49> 89 ef 48 8b 6c 05 00 0f 1f 44 00 00 8b 43 08 a9 00 00 80 00 0f RSP: 0018:ffff88806ce09b78 EFLAGS: 00000246 RAX: 0000000000000200 RBX: ffff888008041140 RCX: ffff88806ce09bcc RDX: ffff88806ce09bd8 RSI: ffff88806ce09bd0 RDI: ffff888008041140 RBP: ffff888020395000 R08: 0000000000000001 R09: ffff8880203952e3 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88806ce09bd0 R13: ffff888020395000 R14: ffff888008041140 R15: 0000000000000000 FS: 00007fbdff789700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055d371ebb60c CR3: 00000000449b4000 CR4: 0000000000350ef0 Call Trace: slab_free mm/slub.c:3154 [inline] kfree+0xd7/0x340 mm/slub.c:4130 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] kfree_skb.part.0+0xa4/0x1c0 net/core/skbuff.c:712 kfree_skb+0x7d/0x100 include/linux/refcount.h:279 __dev_kfree_skb_any net/core/dev.c:3125 [inline] __dev_kfree_skb_any+0x95/0xa0 net/core/dev.c:3120 dev_kfree_skb_any include/linux/netdevice.h:3881 [inline] e1000_unmap_and_free_tx_resource+0x141/0x200 drivers/net/ethernet/intel/e1000/e1000_main.c:1969 e1000_clean_tx_irq drivers/net/ethernet/intel/e1000/e1000_main.c:3860 [inline] e1000_clean+0x4ae/0x1c50 drivers/net/ethernet/intel/e1000/e1000_main.c:3801 napi_poll net/core/dev.c:6867 [inline] net_rx_action+0x3ff/0xf40 net/core/dev.c:6937 __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:cmpxchg_double_slab mm/slub.c:402 [inline] RIP: 0010:__slab_free+0xb5/0x5d0 mm/slub.c:3028 Code: 85 ed 89 c6 41 0f 94 c1 66 45 85 ff 74 08 45 31 f6 45 84 c9 74 0c 45 31 f6 40 84 f6 0f 84 e7 00 00 00 48 8b 8c 24 88 00 00 00 <41> f6 40 0b 40 74 61 48 83 7c 24 50 00 0f 85 0a 03 00 00 48 89 da RSP: 0018:ffff88803f8df8f0 EFLAGS: 00000246 RAX: 0000000000000001 RBX: 0000000080120011 RCX: 0000000080120010 RDX: ffff88800e287cb0 RSI: 0000000000000001 RDI: ffff88800804d640 RBP: ffff88803f8df9d0 R08: ffff88800804d640 R09: ffffffff816cea00 R10: ffff88800e287cb0 R11: 0000000000000001 R12: ffffea000038a180 R13: ffff88800e286bd0 R14: 0000000000000000 R15: 0000000080120010 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:529 [inline] slab_alloc_node mm/slub.c:2901 [inline] slab_alloc mm/slub.c:2909 [inline] kmem_cache_alloc_trace+0x133/0x320 mm/slub.c:2926 kmalloc include/linux/slab.h:555 [inline] kzalloc include/linux/slab.h:667 [inline] kset_create lib/kobject.c:982 [inline] kset_create_and_add+0x4b/0x1a0 lib/kobject.c:1025 register_queue_kobjects net/core/net-sysfs.c:1742 [inline] netdev_register_kobject+0x1c3/0x3b0 net/core/net-sysfs.c:2001 register_netdevice+0xd73/0x1480 net/core/dev.c:10049 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 unshare_nsproxy_namespaces+0xbd/0x1f0 kernel/nsproxy.c:231 ksys_unshare+0x449/0x8a0 kernel/fork.c:3079 __do_sys_unshare kernel/fork.c:3147 [inline] __se_sys_unshare kernel/fork.c:3145 [inline] __x64_sys_unshare+0x2d/0x40 kernel/fork.c:3145 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7fbe02213b19 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:00007fbdff789188 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00007fbe02326f60 RCX: 00007fbe02213b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000060000400 RBP: 00007fbe0226df6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe12746c0f R14: 00007fbdff789300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.10.246 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:25 [inline] RIP: 0010:static_key_false include/linux/jump_label.h:200 [inline] RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:162 [inline] RIP: 0010:wrmsrl arch/x86/include/asm/msr.h:281 [inline] RIP: 0010:lapic_next_deadline+0x21/0x50 arch/x86/kernel/apic/apic.c:479 Code: 12 ae cc 02 0f 1f 44 00 00 66 0f 1f 44 00 00 0f 31 48 c1 e2 20 b9 e0 06 00 00 48 09 c2 48 8d 04 fa 48 89 c2 48 c1 ea 20 0f 30 <0f> 1f 44 00 00 31 c0 e9 83 2c 12 03 48 89 c6 31 d2 bf e0 06 00 00 RSP: 0018:ffff88806cf09ec8 EFLAGS: 00000017 RAX: 00000124b3916d18 RBX: 0000000000000000 RCX: 00000000000006e0 RDX: 0000000000000124 RSI: ffff88806cf27980 RDI: 0000000000053403 RBP: ffff88806cf27980 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000053403 R13: 0000000000000000 R14: ffff88806cf2eab8 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c00069e000 CR3: 0000000017516000 CR4: 0000000000350ee0 Call Trace: clockevents_program_event+0x244/0x360 kernel/time/clockevents.c:334 tick_program_event+0xa0/0x140 kernel/time/tick-oneshot.c:44 hrtimer_interrupt+0x3e1/0x9b0 kernel/time/hrtimer.c:1727 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0xfb/0x310 arch/x86/kernel/apic/apic.c:1112 asm_call_irq_on_stack+0x12/0x20 __run_sysvec_on_irqstack arch/x86/include/asm/irq_stack.h:37 [inline] run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:89 [inline] sysvec_apic_timer_interrupt+0x7f/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:718 Code: ff ff 4c 89 e2 48 89 ef 31 f6 5d 41 5c e9 ea 22 3f fe cc cc cc cc cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d f4 86 58 00 fb f4 ad 85 36 00 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 41 54 be 08 RSP: 0018:ffff888008987e70 EFLAGS: 00000206 RAX: ffffffff83e9ba40 RBX: 0000000000000001 RCX: ffffffff83e836ac RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff83e9c208 RBP: 0000000000000001 R08: 0000000000000001 R09: ffff88806cf3c12b R10: ffffed100d9e7825 R11: 0000000000000001 R12: 0000000000000001 R13: ffffffff8567acc8 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: 0f 44 ed cmove %ebp,%ebp 3: eb 22 jmp 0x27 5: 8b 43 28 mov 0x28(%rbx),%eax 8: 49 8b 14 24 mov (%r12),%rdx c: 49 89 14 07 mov %rdx,(%r15,%rax,1) 10: 48 8b 04 24 mov (%rsp),%rax 14: 4d 89 3c 24 mov %r15,(%r12) 18: 48 83 38 00 cmpq $0x0,(%rax) 1c: 0f 84 06 01 00 00 je 0x128 22: 4d 39 ef cmp %r13,%r15 25: 74 5e je 0x85 27: 8b 43 28 mov 0x28(%rbx),%eax * 2a: 49 89 ef mov %rbp,%r15 <-- trapping instruction 2d: 48 8b 6c 05 00 mov 0x0(%rbp,%rax,1),%rbp 32: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 37: 8b 43 08 mov 0x8(%rbx),%eax 3a: a9 00 00 80 00 test $0x800000,%eax 3f: 0f .byte 0xf