watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.1:6742] Modules linked in: irq event stamp: 4549647 hardirqs last enabled at (4549646): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (4549647): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1095 softirqs last enabled at (4519350): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (4519353): [] asm_call_irq_on_stack+0x12/0x20 CPU: 1 PID: 6742 Comm: syz-executor.1 Not tainted 5.10.156 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:deref_stack_reg+0xe/0x160 arch/x86/kernel/unwind_orc.c:356 Code: 89 0c 24 e8 84 51 5b 00 48 8b 0c 24 eb 99 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 b8 00 00 00 00 00 fc ff df 41 55 41 54 <49> 89 fc 55 48 89 f5 53 48 89 d3 48 89 fa 48 c1 ea 03 48 83 ec 08 RSP: 0018:ffff88806cf09860 EFLAGS: 00000283 RAX: dffffc0000000000 RBX: 0000000000000002 RCX: ffffffff85d3011c RDX: ffff88806cf09990 RSI: ffff88804709fa10 RDI: ffff88806cf09950 RBP: ffff88806cf09985 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000032042 R11: 1ffff1100d9e1317 R12: ffff88804709fa20 R13: ffff88806cf09950 R14: 1ffff1100d9e1317 R15: ffffffff85d30120 FS: 00007f7952cbc700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055c71053b120 CR3: 00000000470ee000 CR4: 0000000000350ee0 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+0x169/0x370 mm/slub.c:2932 __alloc_skb+0x6d/0x620 net/core/skbuff.c:198 skb_copy+0x137/0x2f0 net/core/skbuff.c:1522 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb1d/0x13d0 drivers/net/wireless/mac80211_hwsim.c:1494 mac80211_hwsim_tx_frame+0x152/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1711 mac80211_hwsim_beacon_tx+0x494/0x8f0 drivers/net/wireless/mac80211_hwsim.c:1765 __iterate_interfaces+0x1f0/0x530 net/mac80211/util.c:792 ieee80211_iterate_active_interfaces_atomic+0x72/0x180 net/mac80211/util.c:828 mac80211_hwsim_beacon+0xd1/0x1d0 drivers/net/wireless/mac80211_hwsim.c:1788 __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+0x1b8/0x86b 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:1095 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:do_slab_free mm/slub.c:3115 [inline] RIP: 0010:___cache_free+0x1e7/0x340 mm/slub.c:3156 Code: 7e e8 5d 0d c2 ff 48 c7 c7 a0 81 ff 84 48 c7 c6 97 9d 6b 81 e8 8a 56 bb ff 48 89 ef e8 b2 7f ff ff 49 8b 04 24 65 48 8b 50 08 <65> 48 03 05 99 77 96 7e 48 8b 3c 24 48 39 78 10 0f 85 06 01 00 00 RSP: 0018:ffff88804709fb00 EFLAGS: 00000246 RAX: 000000000003e730 RBX: ffff88800f792300 RCX: 0000000000000006 RDX: 0000000000023b72 RSI: 0000000000000000 RDI: ffff888045090a00 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff816bd500 R10: ffff88801b060c80 R11: 0000000000000001 R12: ffff888007c418c0 R13: ffffea00003de480 R14: ffff888007c418c0 R15: ffff88800f792100 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/0x360 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+0x1ae/0x4b0 mm/slub.c:4015 kmalloc_node include/linux/slab.h:575 [inline] kvmalloc_node+0x119/0x170 mm/util.c:607 kvmalloc include/linux/mm.h:765 [inline] kvzalloc include/linux/mm.h:773 [inline] bucket_table_alloc.isra.0+0x88/0x490 lib/rhashtable.c:184 rhashtable_init+0x341/0x760 lib/rhashtable.c:1061 ipc_init_ids+0x8e/0x240 ipc/util.c:119 create_ipc_ns ipc/namespace.c:64 [inline] copy_ipcs+0x3dc/0x490 ipc/namespace.c:84 create_new_namespaces+0x210/0xb20 kernel/nsproxy.c:90 unshare_nsproxy_namespaces+0xc1/0x1f0 kernel/nsproxy.c:231 ksys_unshare+0x449/0x8a0 kernel/fork.c:2960 __do_sys_unshare kernel/fork.c:3028 [inline] __se_sys_unshare kernel/fork.c:3026 [inline] __x64_sys_unshare+0x2d/0x40 kernel/fork.c:3026 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7f7955746b19 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:00007f7952cbc188 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00007f7955859f60 RCX: 00007f7955746b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000028020600 RBP: 00007f79557a0f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc3430013f R14: 00007f7952cbc300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.10.156 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:91 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:108 [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+0x198/0x1f0 mm/kasan/generic.c:192 Code: 7d 85 41 bb 01 00 00 00 5b 5d 44 89 d8 41 5c e9 ce 6f b4 02 48 85 d2 74 e9 48 01 ea eb 09 48 83 c0 01 48 39 d0 74 db 80 38 00 <74> f2 e9 28 ff ff ff 48 29 c3 48 89 da 49 89 d3 49 c1 fb 3f 49 c1 RSP: 0018:ffff88806ce09a18 EFLAGS: 00000246 RAX: fffffbfff0f269b4 RBX: fffffbfff0f269b5 RCX: ffffffff81275d27 RDX: fffffbfff0f269b5 RSI: 0000000000000004 RDI: ffffffff87934da0 RBP: fffffbfff0f269b4 R08: 0000000000000000 R09: ffffffff87934da3 R10: fffffbfff0f269b4 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0f269b4 R14: 0000000000000001 R15: 1ffff1100d9c1348 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055c710528678 CR3: 00000000087ca000 CR4: 0000000000350ef0 Call Trace: 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:1445 mac80211_hwsim_tx_frame+0x152/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1711 mac80211_hwsim_beacon_tx+0x494/0x8f0 drivers/net/wireless/mac80211_hwsim.c:1765 __iterate_interfaces+0x1f0/0x530 net/mac80211/util.c:792 ieee80211_iterate_active_interfaces_atomic+0x72/0x180 net/mac80211/util.c:828 mac80211_hwsim_beacon+0xd1/0x1d0 drivers/net/wireless/mac80211_hwsim.c:1788 __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+0x1b8/0x86b 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:1095 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:690 Code: 89 fd e9 4b ff ff ff 4c 89 e7 e8 4d da 89 fd eb 8f 66 66 2e 0f 1f 84 00 00 00 00 00 e9 07 00 00 00 0f 00 2d 84 49 60 00 fb f4 fd 47 3e 00 cc cc cc cc cc cc cc cc cc cc cc cc cc 41 55 41 54 RSP: 0018:ffffffff84e07e40 EFLAGS: 00000202 RAX: ffffffff83e1f7f0 RBX: ffffffff84e322c0 RCX: ffffffff83e0753c RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff83e1fbb3 RBP: fffffbfff09c6458 R08: 0000000000000001 R09: ffff88806ce3c12b R10: ffffed100d9c7825 R11: 0000000000000001 R12: 0000000000000000 R13: ffffffff85670cc8 R14: 0000000000000000 R15: dffffc0000000000 default_idle_call+0x8b/0xd0 kernel/sched/idle.c:112 cpuidle_idle_call kernel/sched/idle.c:194 [inline] do_idle+0x3ad/0x520 kernel/sched/idle.c:300 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:396 start_kernel+0x469/0x48e init/main.c:1055 secondary_startup_64_no_verify+0xc2/0xcb ---------------- Code disassembly (best guess): 0: 89 0c 24 mov %ecx,(%rsp) 3: e8 84 51 5b 00 callq 0x5b518c 8: 48 8b 0c 24 mov (%rsp),%rcx c: eb 99 jmp 0xffffffa7 e: 66 66 2e 0f 1f 84 00 data16 nopw %cs:0x0(%rax,%rax,1) 15: 00 00 00 00 19: 0f 1f 00 nopl (%rax) 1c: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 23: fc ff df 26: 41 55 push %r13 28: 41 54 push %r12 * 2a: 49 89 fc mov %rdi,%r12 <-- trapping instruction 2d: 55 push %rbp 2e: 48 89 f5 mov %rsi,%rbp 31: 53 push %rbx 32: 48 89 d3 mov %rdx,%rbx 35: 48 89 fa mov %rdi,%rdx 38: 48 c1 ea 03 shr $0x3,%rdx 3c: 48 83 ec 08 sub $0x8,%rsp