watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.6:5113] Modules linked in: irq event stamp: 4865145 hardirqs last enabled at (4865144): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (4865145): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (4814102): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (4814105): [] asm_call_irq_on_stack+0x12/0x20 CPU: 1 PID: 5113 Comm: syz-executor.6 Not tainted 5.10.237 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:mac80211_hwsim_beacon_tx+0x32/0x940 drivers/net/wireless/mac80211_hwsim.c:1724 Code: fd 41 54 49 89 d4 55 53 48 83 ec 18 e8 87 b6 76 fe 49 8d 7d 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 35 08 00 00 49 8d bc 24 d8 02 00 00 49 8b 5d 18 48 b8 00 00 RSP: 0018:ffff88806cf09d38 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffff88804732cbc0 RCX: ffffffff83c47ac5 RDX: 1ffff110039d563b RSI: ffffffff82ca0659 RDI: ffff88801ceab1d8 RBP: dffffc0000000000 R08: 0000000000000000 R09: ffff88804732cf87 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88804732dd98 R13: ffff88801ceab1c0 R14: ffff88801ceaa678 R15: 0000000000000002 FS: 00007fb693c7f700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0fa8f1ad58 CR3: 000000004817e000 CR4: 0000000000350ee0 Call Trace: __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:1588 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1652 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1669 __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:preempt_schedule_common+0xa/0x70 kernel/sched/core.c:4689 Code: e9 58 ff ff ff e8 46 87 84 fd e9 12 ff ff ff e8 6c 87 84 fd e9 76 ff ff ff 0f 1f 80 00 00 00 00 48 b8 00 00 00 00 00 fc ff df <55> 53 65 48 8b 1c 25 80 6f 02 00 48 89 dd 48 c1 ed 03 48 01 c5 65 RSP: 0018:ffff8880495cfc40 EFLAGS: 00000202 RAX: dffffc0000000000 RBX: 0000000000000138 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffff8880483ea318 RBP: ffff88800804d640 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffffffff816f6fca R13: ffff88800d60bf00 R14: 0000000000092cc0 R15: 0000000000092cc0 _cond_resched+0x23/0x30 kernel/sched/core.c:6129 slab_pre_alloc_hook mm/slab.h:513 [inline] slab_alloc_node mm/slub.c:2821 [inline] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc+0x29c/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] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc+0x159/0x310 mm/slub.c:2909 __d_alloc+0x2a/0x990 fs/dcache.c:1714 d_alloc_pseudo+0x19/0x70 fs/dcache.c:1843 alloc_file_pseudo+0xce/0x250 fs/file_table.c:226 sock_alloc_file+0x4f/0x1a0 net/socket.c:411 sock_map_fd net/socket.c:435 [inline] __sys_socket+0x13d/0x200 net/socket.c:1532 __do_sys_socket net/socket.c:1537 [inline] __se_sys_socket net/socket.c:1535 [inline] __x64_sys_socket+0x6f/0xb0 net/socket.c:1535 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7fb696709b19 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:00007fb693c7f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007fb69681cf60 RCX: 00007fb696709b19 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000010 RBP: 00007fb696763f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff3b5787ff R14: 00007fb693c7f300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 5117 Comm: syz-executor.3 Not tainted 5.10.237 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x138f/0x1a90 arch/x86/kernel/unwind_orc.c:606 Code: 5f 04 00 00 49 8b 45 10 48 39 dd 0f 87 7a fa ff ff 48 39 d8 0f 86 71 fa ff ff 48 8d 53 08 48 39 d0 0f 93 c1 48 39 d5 0f 92 c0 <84> c1 0f 84 59 fa ff ff 48 39 5c 24 18 0f 82 4e fa ff ff 48 b8 00 RSP: 0018:ffff88806ce095d8 EFLAGS: 00000297 RAX: ffff88800f610001 RBX: ffff88800f60f6e0 RCX: ffffffff85d42b01 RDX: ffff88800f60f6e8 RSI: 0000000000000001 RDI: ffff88806ce096c0 RBP: ffff88800f608000 R08: 0000000000000001 R09: ffff88800f60f6e0 R10: 0000000000032042 R11: 1ffff1100d9c12c3 R12: ffff88800f60f6e0 R13: ffff88806ce096b0 R14: 1ffff1100d9c12c3 R15: ffffffff85d42bb8 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555560b8c58 CR3: 000000000cb22000 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] 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 skb_copy+0x183/0x350 net/core/skbuff.c:1530 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb50/0x1410 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:1588 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1652 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1669 __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:debug_lockdep_rcu_enabled+0x0/0x30 kernel/rcu/update.c:278 Code: 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 65 81 05 e0 12 1b 7c 00 00 00 f0 e9 bb b2 38 00 cc cc cc cc cc cc cc cc cc cc cc <8b> 05 0e fb 7f 01 85 c0 74 21 8b 05 5c 0a 80 01 85 c0 74 17 65 48 RSP: 0018:ffff88800f60f6d8 EFLAGS: 00000282 RAX: 0000000000000000 RBX: ffffea0000fbe380 RCX: 000000006f935260 RDX: 1ffff11001e55470 RSI: e2cac880f9f1263e RDI: 0000000000000001 RBP: ffffea0000fbe380 R08: 0000000000000000 R09: ffffffff8686c6a7 R10: 0000000000000246 R11: 0000000000000001 R12: 0000000000000000 R13: ffffea0000fbe388 R14: dffffc0000000000 R15: 00007f7c6fb10000 rcu_read_lock include/linux/rcupdate.h:718 [inline] lock_page_memcg+0x6a/0x270 mm/memcontrol.c:2145 page_remove_rmap+0x21/0x7c0 mm/rmap.c:1328 zap_pte_range mm/memory.c:1287 [inline] zap_pmd_range mm/memory.c:1404 [inline] zap_pud_range mm/memory.c:1433 [inline] zap_p4d_range mm/memory.c:1454 [inline] unmap_page_range+0x110f/0x1fe0 mm/memory.c:1475 unmap_single_vma+0x198/0x300 mm/memory.c:1520 unmap_vmas+0x16d/0x300 mm/memory.c:1552 exit_mmap+0x27f/0x4f0 mm/mmap.c:3253 __mmput kernel/fork.c:1101 [inline] mmput+0xca/0x340 kernel/fork.c:1122 exit_mm kernel/exit.c:536 [inline] do_exit+0xa96/0x2600 kernel/exit.c:847 do_group_exit+0x125/0x310 kernel/exit.c:982 get_signal+0x4bc/0x2350 kernel/signal.c:2762 arch_do_signal_or_restart+0x2b7/0x1990 arch/x86/kernel/signal.c:805 handle_signal_work kernel/entry/common.c:145 [inline] exit_to_user_mode_loop kernel/entry/common.c:169 [inline] exit_to_user_mode_prepare+0x10f/0x190 kernel/entry/common.c:199 syscall_exit_to_user_mode+0x38/0x1d0 kernel/entry/common.c:274 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f7c711b3b19 Code: Unable to access opcode bytes at RIP 0x7f7c711b3aef. RSP: 002b:00007f7c6e729188 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: 0000000000000004 RBX: 00007f7c712c6f60 RCX: 00007f7c711b3b19 RDX: 0000000000000010 RSI: 0000000000000003 RDI: 0000000000000010 RBP: 00007f7c7120df6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc2c4fdfbf R14: 00007f7c6e729300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: fd std 1: 41 54 push %r12 3: 49 89 d4 mov %rdx,%r12 6: 55 push %rbp 7: 53 push %rbx 8: 48 83 ec 18 sub $0x18,%rsp c: e8 87 b6 76 fe callq 0xfe76b698 11: 49 8d 7d 18 lea 0x18(%r13),%rdi 15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1c: fc ff df 1f: 48 89 fa mov %rdi,%rdx 22: 48 c1 ea 03 shr $0x3,%rdx 26: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) * 2a: 0f 85 35 08 00 00 jne 0x865 <-- trapping instruction 30: 49 8d bc 24 d8 02 00 lea 0x2d8(%r12),%rdi 37: 00 38: 49 8b 5d 18 mov 0x18(%r13),%rbx 3c: 48 rex.W 3d: b8 .byte 0xb8