watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.2:4247] Modules linked in: irq event stamp: 3231051 hardirqs last enabled at (3231050): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (3231051): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1094 softirqs last enabled at (3228498): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (3228507): [] asm_call_irq_on_stack+0x12/0x20 CPU: 1 PID: 4247 Comm: syz-executor.2 Not tainted 5.10.205 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x1242/0x1a90 arch/x86/kernel/unwind_orc.c:589 Code: 49 8d 55 40 48 be 00 00 00 00 00 fc ff df 48 89 f8 48 c1 e8 03 44 0f b6 04 30 48 8d 41 03 49 89 c1 49 c1 e9 03 41 0f b6 34 31 <49> 89 f9 41 83 e1 07 45 38 c8 41 0f 9e c1 45 84 c0 41 0f 95 c0 45 RSP: 0018:ffff88806cf09870 EFLAGS: 00000213 RAX: ffffffff85d0f0e5 RBX: 0000000000000002 RCX: ffffffff85d0f0e2 RDX: ffff88806cf09988 RSI: 0000000000000000 RDI: ffffffff85d0f0e4 RBP: ffff88806cf0997d R08: 0000000000000000 R09: 1ffffffff0ba1e1c R10: 0000000000032042 R11: 1ffff1100d9e1316 R12: ffff88806cf09de8 R13: ffff88806cf09948 R14: 1ffff1100d9e1316 R15: ffffffff85d0f0e6 FS: 00007fed6cdcc700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa59b85c9ec CR3: 0000000049f6c000 CR4: 0000000000350ee0 Call Trace: 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:198 __netdev_alloc_skb+0x6e/0x360 net/core/skbuff.c:446 netdev_alloc_skb include/linux/skbuff.h:2842 [inline] dev_alloc_skb include/linux/skbuff.h:2855 [inline] __ieee80211_beacon_get+0x3af/0x1440 net/mac80211/tx.c:4875 ieee80211_beacon_get_tim+0x88/0x9f0 net/mac80211/tx.c:4989 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:1583 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1647 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1664 __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:1094 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:refill_obj_stock+0x18c/0x320 mm/memcontrol.c:3228 Code: f4 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 45 01 00 00 44 89 65 18 41 81 fc 00 10 00 00 77 56 4d 85 f6 75 4a 41 55 9d <48> 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f e9 d1 29 b2 02 48 b8 00 RSP: 0018:ffff88801b8bf6e0 EFLAGS: 00000282 RAX: 0000000000314359 RBX: ffff88806cf38cf8 RCX: 1ffffffff0d11932 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff816e16e8 RBP: ffff88806cf38ce0 R08: 0000000000000001 R09: ffffffff86861757 R10: fffffbfff0d0c2ea R11: 0000000000000001 R12: 0000000000000700 R13: 0000000000000282 R14: 0000000000000200 R15: ffff88806cf38cf0 memcg_slab_free_hook mm/slab.h:382 [inline] memcg_slab_free_hook mm/slab.h:351 [inline] do_slab_free mm/slub.c:3105 [inline] ___cache_free+0x101/0x360 mm/slub.c:3156 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/0x310 mm/slub.c:2909 ptlock_alloc+0x1d/0x70 mm/memory.c:5332 ptlock_init include/linux/mm.h:2196 [inline] pgtable_pte_page_ctor include/linux/mm.h:2223 [inline] __pte_alloc_one include/asm-generic/pgalloc.h:66 [inline] pte_alloc_one+0x68/0x1a0 arch/x86/mm/pgtable.c:33 __pte_alloc+0x1d/0x330 mm/memory.c:428 copy_pte_range mm/memory.c:952 [inline] copy_pmd_range mm/memory.c:1070 [inline] copy_pud_range mm/memory.c:1107 [inline] copy_p4d_range mm/memory.c:1131 [inline] copy_page_range+0x1b62/0x3810 mm/memory.c:1204 dup_mmap kernel/fork.c:596 [inline] dup_mm kernel/fork.c:1380 [inline] copy_mm kernel/fork.c:1436 [inline] copy_process+0x759b/0x7800 kernel/fork.c:2126 kernel_clone+0xe7/0x980 kernel/fork.c:2506 __do_sys_fork+0x8a/0xc0 kernel/fork.c:2569 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x62/0xc7 RIP: 0033:0x7fed6f877b19 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:00007fed6cdcc188 EFLAGS: 00000246 ORIG_RAX: 0000000000000039 RAX: ffffffffffffffda RBX: 00007fed6f98b020 RCX: 00007fed6f877b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fed6f8d1f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc4bfec55f R14: 00007fed6cdcc300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.10.205 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:lock_is_held_type+0x6/0x110 kernel/locking/lockdep.c:5599 Code: e0 9c 46 84 89 44 24 04 e8 f7 e8 f2 ff 0f 0b 8b 44 24 04 eb b5 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 8b 0d e6 d5 82 01 <41> b8 01 00 00 00 85 c9 0f 84 d4 00 00 00 65 8b 05 b5 1d 1e 7c 85 RSP: 0018:ffff88806ce09be8 EFLAGS: 00000002 RAX: 0000000000000001 RBX: ffffffff84e32280 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffff88806ce3b2d8 RBP: ffff88806ce3b2c0 R08: 0000000000000000 R09: ffffffff84e32287 R10: fffffbfff09c6450 R11: 0000000000000001 R12: ffffffff84c85ce0 R13: ffff88806ce3bca8 R14: ffffffff84c85da0 R15: ffff88806ce3b2c0 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000560c0e0736cc CR3: 000000000e4f2000 CR4: 0000000000350ef0 Call Trace: lock_is_held include/linux/lockdep.h:282 [inline] rq_clock_skip_update kernel/sched/sched.h:1183 [inline] check_preempt_curr+0x1f6/0x2a0 kernel/sched/core.c:1708 ttwu_do_wakeup+0x1c/0x490 kernel/sched/core.c:2475 ttwu_queue kernel/sched/core.c:2722 [inline] try_to_wake_up+0x5a0/0x1290 kernel/sched/core.c:3000 call_timer_fn+0x182/0x4a0 kernel/time/timer.c:1414 expire_timers kernel/time/timer.c:1459 [inline] __run_timers.part.0+0x667/0x9a0 kernel/time/timer.c:1753 __run_timers kernel/time/timer.c:1731 [inline] run_timer_softirq+0x80/0x120 kernel/time/timer.c:1766 __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:1094 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: 86 fd e9 4b ff ff ff 4c 89 e7 e8 6d 78 86 fd eb 8f 66 66 2e 0f 1f 84 00 00 00 00 00 e9 07 00 00 00 0f 00 2d 34 5a 5c 00 fb f4 ed 5b 3a 00 cc cc cc cc cc cc cc cc cc cc cc cc cc 41 55 41 54 RSP: 0018:ffffffff84e07e38 EFLAGS: 00000206 RAX: ffffffff83e5e480 RBX: 0000000000000000 RCX: ffffffff83e4653c RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff83e5ea88 RBP: fffffbfff09c6450 R08: 0000000000000001 R09: ffff88806ce3c12b R10: ffffed100d9c7825 R11: 0000000000000001 R12: 0000000000000000 R13: ffffffff85672788 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+0x3ad/0x520 kernel/sched/idle.c:300 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:396 start_kernel+0x464/0x489 init/main.c:1044 secondary_startup_64_no_verify+0xc2/0xcb ---------------- Code disassembly (best guess): 0: 49 8d 55 40 lea 0x40(%r13),%rdx 4: 48 be 00 00 00 00 00 movabs $0xdffffc0000000000,%rsi b: fc ff df e: 48 89 f8 mov %rdi,%rax 11: 48 c1 e8 03 shr $0x3,%rax 15: 44 0f b6 04 30 movzbl (%rax,%rsi,1),%r8d 1a: 48 8d 41 03 lea 0x3(%rcx),%rax 1e: 49 89 c1 mov %rax,%r9 21: 49 c1 e9 03 shr $0x3,%r9 25: 41 0f b6 34 31 movzbl (%r9,%rsi,1),%esi * 2a: 49 89 f9 mov %rdi,%r9 <-- trapping instruction 2d: 41 83 e1 07 and $0x7,%r9d 31: 45 38 c8 cmp %r9b,%r8b 34: 41 0f 9e c1 setle %r9b 38: 45 84 c0 test %r8b,%r8b 3b: 41 0f 95 c0 setne %r8b 3f: 45 rex.RB