netlink: 8 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.0'. watchdog: BUG: soft lockup - CPU#1 stuck for 24s! [syz-executor.6:8642] Modules linked in: irq event stamp: 6049895 hardirqs last enabled at (6049894): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (6049895): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1095 softirqs last enabled at (5991648): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (5991651): [] asm_call_irq_on_stack+0x12/0x20 CPU: 1 PID: 8642 Comm: syz-executor.6 Not tainted 5.10.123 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:orc_ip arch/x86/kernel/unwind_orc.c:30 [inline] RIP: 0010:__orc_find+0x6f/0xf0 arch/x86/kernel/unwind_orc.c:52 Code: 72 4d 4c 89 e0 48 29 e8 48 89 c2 48 c1 e8 3f 48 c1 fa 02 48 01 d0 48 d1 f8 48 8d 5c 85 00 48 89 d8 48 c1 e8 03 42 0f b6 14 38 <48> 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 48 48 63 03 48 01 RSP: 0018:ffff88806cf09588 EFLAGS: 00000212 RAX: 1ffffffff0aca5e9 RBX: ffffffff85652f48 RCX: ffffffff82c2a3c1 RDX: 0000000000000000 RSI: ffffffff859ddaf6 RDI: ffffffff85652f38 RBP: ffffffff85652f38 R08: ffffffff859ddaf6 R09: ffffffff859ddb2c R10: 0000000000030041 R11: 1ffff1100d9e12c2 R12: ffffffff85652f58 R13: ffffffff85652f38 R14: ffffffff85652f38 R15: dffffc0000000000 FS: 00007f2d35de0700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005618665ced48 CR3: 000000004237e000 CR4: 0000000000350ee0 Call Trace: orc_find arch/x86/kernel/unwind_orc.c:173 [inline] unwind_next_frame+0x2b3/0x1a90 arch/x86/kernel/unwind_orc.c:443 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+0xc2/0xd0 mm/kasan/common.c:461 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/0x350 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] __kmalloc_node_track_caller+0x1a6/0x3f0 mm/slub.c:4496 __kmalloc_reserve net/core/skbuff.c:142 [inline] __alloc_skb+0xb1/0x620 net/core/skbuff.c:210 skb_copy+0x137/0x2f0 net/core/skbuff.c:1522 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb1d/0x13c0 drivers/net/wireless/mac80211_hwsim.c:1495 mac80211_hwsim_tx_frame+0x152/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1712 mac80211_hwsim_beacon_tx+0x494/0x8f0 drivers/net/wireless/mac80211_hwsim.c:1766 __iterate_interfaces+0x1f0/0x530 net/mac80211/util.c:792 ieee80211_iterate_active_interfaces_atomic+0x72/0x180 net/mac80211/util.c:828 mac80211_hwsim_beacon+0xcd/0x1c0 drivers/net/wireless/mac80211_hwsim.c:1789 __run_hrtimer kernel/time/hrtimer.c:1583 [inline] __hrtimer_run_queues+0x5e8/0xb50 kernel/time/hrtimer.c:1647 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1664 __do_softirq+0x1b8/0x867 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+0x110/0x1a0 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x43/0xa0 arch/x86/kernel/apic/apic.c:1095 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:cmpxchg_double_slab mm/slub.c:403 [inline] RIP: 0010:__slab_free+0x51/0x5d0 mm/slub.c:3023 Code: 24 58 65 48 8b 04 25 28 00 00 00 48 89 84 24 a8 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 RSP: 0018:ffff888040597900 EFLAGS: 00000246 RAX: ffffea00003ecf20 RBX: 0000000000000001 RCX: ffff88800fb3c800 RDX: ffff88800fb3c800 RSI: ffffea00003ecf00 RDI: ffff888007fe3000 RBP: ffff8880405979d8 R08: ffff888007fe3000 R09: ffffffff816b0715 R10: ffff88800fb3c800 R11: 0000000000000001 R12: ffffea00003ecf00 R13: 0000000080000000 R14: ffff888007fe3000 R15: ffff888034493300 qlink_free mm/kasan/quarantine.c:151 [inline] qlist_free_all+0x59/0xd0 mm/kasan/quarantine.c:170 quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:267 __kasan_kmalloc.constprop.0+0x9e/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/0x350 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] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc_trace+0x151/0x360 mm/slub.c:2921 kmalloc include/linux/slab.h:552 [inline] __memcg_init_list_lru_node+0x7f/0x1e0 mm/list_lru.c:339 memcg_init_list_lru_node mm/list_lru.c:362 [inline] memcg_init_list_lru mm/list_lru.c:448 [inline] __list_lru_init+0x403/0x7e0 mm/list_lru.c:615 alloc_super+0x7f4/0x990 fs/super.c:272 sget_fc+0x13e/0x740 fs/super.c:530 vfs_get_super fs/super.c:1186 [inline] get_tree_nodev+0x24/0x1d0 fs/super.c:1221 mqueue_get_tree+0xee/0x130 ipc/mqueue.c:434 vfs_get_tree+0x8e/0x2f0 fs/super.c:1549 fc_mount+0x13/0xc0 fs/namespace.c:978 mq_create_mount ipc/mqueue.c:484 [inline] mq_init_ns+0x39e/0x520 ipc/mqueue.c:1700 create_ipc_ns ipc/namespace.c:58 [inline] copy_ipcs+0x2f1/0x480 ipc/namespace.c:84 create_new_namespaces+0x210/0xb20 kernel/nsproxy.c:90 unshare_nsproxy_namespaces+0xc1/0x1f0 kernel/nsproxy.c:231 ksys_unshare+0x445/0x8a0 kernel/fork.c:2959 __do_sys_unshare kernel/fork.c:3027 [inline] __se_sys_unshare kernel/fork.c:3025 [inline] __x64_sys_unshare+0x2d/0x40 kernel/fork.c:3025 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f2d3888bb19 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:00007f2d35de0188 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00007f2d3899f020 RCX: 00007f2d3888bb19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000028020600 RBP: 00007f2d388e5f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffe6d8a74f R14: 00007f2d35de0300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.10.123 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:cpu_relax arch/x86/include/asm/vdso/processor.h:19 [inline] RIP: 0010:virt_spin_lock arch/x86/include/asm/qspinlock.h:100 [inline] RIP: 0010:queued_spin_lock_slowpath+0x11e/0x8c0 kernel/locking/qspinlock.c:326 Code: 8b 84 24 80 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 05 07 00 00 48 81 c4 88 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f c3 f3 90 77 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e1 00 00 RSP: 0018:ffff88806ce09a38 EFLAGS: 00000202 RAX: 0000000000000000 RBX: ffffffff876edca0 RCX: ffffffff8126fcf7 RDX: fffffbfff0eddb95 RSI: 0000000000000004 RDI: ffffffff876edca0 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff876edca3 R10: fffffbfff0eddb94 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0eddb94 R14: 0000000000000001 R15: 1ffff1100d9c1348 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005618665c01f0 CR3: 000000001c9b0000 CR4: 0000000000350ef0 Call Trace: queued_spin_lock include/asm-generic/qspinlock.h:85 [inline] do_raw_spin_lock+0x1d8/0x260 kernel/locking/spinlock_debug.c:113 spin_lock include/linux/spinlock.h:354 [inline] mac80211_hwsim_tx_frame_no_nl.isra.0+0x695/0x13c0 drivers/net/wireless/mac80211_hwsim.c:1446 mac80211_hwsim_tx_frame+0x152/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1712 mac80211_hwsim_beacon_tx+0x494/0x8f0 drivers/net/wireless/mac80211_hwsim.c:1766 __iterate_interfaces+0x1f0/0x530 net/mac80211/util.c:792 ieee80211_iterate_active_interfaces_atomic+0x72/0x180 net/mac80211/util.c:828 mac80211_hwsim_beacon+0xcd/0x1c0 drivers/net/wireless/mac80211_hwsim.c:1789 __run_hrtimer kernel/time/hrtimer.c:1583 [inline] __hrtimer_run_queues+0x5e8/0xb50 kernel/time/hrtimer.c:1647 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1664 __do_softirq+0x1b8/0x867 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+0x110/0x1a0 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x43/0xa0 arch/x86/kernel/apic/apic.c:1095 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:default_idle+0xe/0x10 arch/x86/kernel/process.c:690 Code: ff ff ff 4c 89 e7 e8 91 7a 8c fd eb 93 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 e9 07 00 00 00 0f 00 2d 94 b5 43 00 fb f4 cc 41 55 41 54 55 48 89 fd 53 e8 d2 17 61 fd 48 8b 1d fb d2 03 RSP: 0018:ffffffff84c07e40 EFLAGS: 00000206 RAX: ffffffff83de8980 RBX: ffffffff84c322c0 RCX: ffffffff83dd0768 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff83de8d2f RBP: fffffbfff0986458 R08: 0000000000000001 R09: ffff88806ce3c12b R10: ffffed100d9c7825 R11: 0000000000000001 R12: 0000000000000000 R13: ffffffff8546f948 R14: 0000000000000000 R15: dffffc0000000000 default_idle_call+0x87/0xd0 kernel/sched/idle.c:112 cpuidle_idle_call kernel/sched/idle.c:194 [inline] do_idle+0x3a9/0x520 kernel/sched/idle.c:300 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:396 start_kernel+0x469/0x48a init/main.c:1055 secondary_startup_64_no_verify+0xc2/0xcb hpet_rtc_timer_reinit: 10 callbacks suppressed hpet: Lost 2 RTC interrupts ---------------- Code disassembly (best guess): 0: 72 4d jb 0x4f 2: 4c 89 e0 mov %r12,%rax 5: 48 29 e8 sub %rbp,%rax 8: 48 89 c2 mov %rax,%rdx b: 48 c1 e8 3f shr $0x3f,%rax f: 48 c1 fa 02 sar $0x2,%rdx 13: 48 01 d0 add %rdx,%rax 16: 48 d1 f8 sar %rax 19: 48 8d 5c 85 00 lea 0x0(%rbp,%rax,4),%rbx 1e: 48 89 d8 mov %rbx,%rax 21: 48 c1 e8 03 shr $0x3,%rax 25: 42 0f b6 14 38 movzbl (%rax,%r15,1),%edx * 2a: 48 89 d8 mov %rbx,%rax <-- trapping instruction 2d: 83 e0 07 and $0x7,%eax 30: 83 c0 03 add $0x3,%eax 33: 38 d0 cmp %dl,%al 35: 7c 04 jl 0x3b 37: 84 d2 test %dl,%dl 39: 75 48 jne 0x83 3b: 48 63 03 movslq (%rbx),%rax 3e: 48 rex.W 3f: 01 .byte 0x1