netlink: 16 bytes leftover after parsing attributes in process `syz-executor.7'. Module has invalid ELF structures watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [syz-executor.5:4121] Modules linked in: irq event stamp: 4796635 hardirqs last enabled at (4796634): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (4796635): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (4774426): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (4774429): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 4121 Comm: syz-executor.5 Not tainted 5.10.234 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:deref_stack_reg+0x10a/0x160 arch/x86/kernel/unwind_orc.c:362 Code: 00 00 00 00 fc ff df 48 89 d9 48 89 ef e8 de f8 ff ff 48 c1 e9 03 80 3c 11 00 75 35 48 89 03 b8 01 00 00 00 48 83 c4 08 5b 5d <41> 5c 41 5d e9 4d cd 0f 03 e8 98 3d 5c 00 e9 17 ff ff ff e8 9e 3d RSP: 0018:ffff88806ce09858 EFLAGS: 00000286 RAX: 0000000000000001 RBX: 0000000000000002 RCX: 1ffff1100d9c1331 RDX: dffffc0000000000 RSI: ffff88806ce09f58 RDI: ffff88806ce09f58 RBP: ffff88806ce0997d R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000032042 R11: 1ffff1100d9c1316 R12: ffff88806ce09948 R13: ffff88806ce02000 R14: 1ffff1100d9c1316 R15: ffffffff859bdb8e FS: 00007f95a1b07700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000004a1ba000 CR4: 0000000000350ef0 DR0: 0000000100000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: unwind_next_frame+0x1289/0x1a90 arch/x86/kernel/unwind_orc.c:589 arch_stack_walk+0x83/0xf0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 __save_stack_trace mm/kmemleak.c:563 [inline] create_object.isra.0+0x372/0xa20 mm/kmemleak.c:618 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 __netdev_alloc_skb+0x6e/0x360 net/core/skbuff.c:448 netdev_alloc_skb include/linux/skbuff.h:2855 [inline] dev_alloc_skb include/linux/skbuff.h:2868 [inline] __ieee80211_beacon_get+0x3af/0x1440 net/mac80211/tx.c:4876 ieee80211_beacon_get_tim+0x88/0x9f0 net/mac80211/tx.c:4990 ieee80211_beacon_get include/net/mac80211.h:4912 [inline] mac80211_hwsim_beacon_tx+0x111/0x940 drivers/net/wireless/mac80211_hwsim.c:1740 __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:1586 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1650 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1667 __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:qlink_free mm/kasan/quarantine.c:151 [inline] RIP: 0010:qlist_free_all+0x3f/0xe0 mm/kasan/quarantine.c:170 Code: a3 00 00 00 49 89 fc 41 bd 00 00 00 80 49 c7 c6 00 00 00 80 48 bd 00 00 00 00 00 fc ff df eb 2c 48 63 87 c0 00 00 00 4c 8b 3e <48> c7 c2 65 b3 6c 81 48 29 c6 48 89 f0 48 c1 e8 03 c6 04 28 fb e8 RSP: 0018:ffff888048016fb8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffea00011e737f RDX: 0000000000000000 RSI: ffff88800cad8bd0 RDI: ffff88800804d640 RBP: dffffc0000000000 R08: 0000000000000011 R09: ffffffff816cb301 R10: ffff88800e634f30 R11: 0000000000000001 R12: ffff888048016ff0 R13: 0000000080000000 R14: ffffffff80000000 R15: ffff8880479cef30 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_skb_with_frags+0x92/0x570 net/core/skbuff.c:5972 sock_alloc_send_pskb+0x7af/0x930 net/core/sock.c:2375 __ip6_append_data.isra.0+0x1c12/0x3a70 net/ipv6/ip6_output.c:1650 ip6_make_skb+0x2de/0x4e0 net/ipv6/ip6_output.c:2019 udpv6_sendmsg+0x20d3/0x2ad0 net/ipv6/udp.c:1554 inet6_sendmsg+0x105/0x140 net/ipv6/af_inet6.c:661 sock_sendmsg_nosec net/socket.c:651 [inline] __sock_sendmsg+0xf2/0x190 net/socket.c:663 ____sys_sendmsg+0x334/0x870 net/socket.c:2378 ___sys_sendmsg+0xf3/0x170 net/socket.c:2432 __sys_sendmmsg+0x195/0x470 net/socket.c:2518 __do_sys_sendmmsg net/socket.c:2547 [inline] __se_sys_sendmmsg net/socket.c:2544 [inline] __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2544 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f95a4591b19 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:00007f95a1b07188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f95a46a4f60 RCX: 00007f95a4591b19 RDX: 000000007ffff000 RSI: 0000000020004d00 RDI: 0000000000000004 RBP: 00007f95a45ebf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc479f104f R14: 00007f95a1b07300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.10.234 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__lock_acquire+0xd71/0x5b00 kernel/locking/lockdep.c:4825 Code: 01 00 00 00 0f 86 c0 00 00 00 89 05 f9 17 19 05 e9 b5 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 80 3c 02 00 <0f> 85 75 2f 00 00 49 81 3e 00 62 15 86 0f 84 5f f3 ff ff 83 fe 01 RSP: 0018:ffff88806cf09a08 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: 1ffff1100d9e136f RCX: 0000000000000000 RDX: 1ffff11001124458 RSI: 0000000000000000 RDI: ffff8880089222c0 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000046 R11: 0000000000000001 R12: ffff888008978000 R13: 0000000000000001 R14: ffff8880089222c0 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055a1e5a15678 CR3: 000000000f5a8000 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 try_to_wake_up+0x99/0x1290 kernel/sched/core.c:2878 call_timer_fn+0x182/0x4a0 kernel/time/timer.c:1444 expire_timers kernel/time/timer.c:1489 [inline] __run_timers.part.0+0x667/0x9a0 kernel/time/timer.c:1783 __run_timers kernel/time/timer.c:1761 [inline] run_timer_softirq+0x80/0x120 kernel/time/timer.c:1796 __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:707 Code: 4e ff ff ff 4c 89 e7 e8 80 c6 84 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 c4 55 5a 00 fb f4 fd 55 38 00 cc cc cc cc cc cc cc cc cc cc cc cc cc 41 55 41 54 RSP: 0018:ffff888008987e70 EFLAGS: 00000202 RAX: ffffffff83e7e9b0 RBX: 0000000000000001 RCX: ffffffff83e6658c RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff83e7efb8 RBP: 0000000000000001 R08: 0000000000000001 R09: ffff88806cf3c12b R10: ffffed100d9e7825 R11: 0000000000000001 R12: 0000000000000001 R13: ffffffff85678508 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), 6 bytes skipped: 0: df 48 89 fisttps -0x77(%rax) 3: d9 48 89 (bad) -0x77(%rax) 6: ef out %eax,(%dx) 7: e8 de f8 ff ff callq 0xfffff8ea c: 48 c1 e9 03 shr $0x3,%rcx 10: 80 3c 11 00 cmpb $0x0,(%rcx,%rdx,1) 14: 75 35 jne 0x4b 16: 48 89 03 mov %rax,(%rbx) 19: b8 01 00 00 00 mov $0x1,%eax 1e: 48 83 c4 08 add $0x8,%rsp 22: 5b pop %rbx 23: 5d pop %rbp * 24: 41 5c pop %r12 <-- trapping instruction 26: 41 5d pop %r13 28: e9 4d cd 0f 03 jmpq 0x30fcd7a 2d: e8 98 3d 5c 00 callq 0x5c3dca 32: e9 17 ff ff ff jmpq 0xffffff4e 37: e8 .byte 0xe8 38: 9e sahf 39: 3d .byte 0x3d