watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.0:4410] Modules linked in: irq event stamp: 3980989 hardirqs last enabled at (3980988): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (3980989): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (3979702): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (3979705): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 4410 Comm: syz-executor.0 Not tainted 5.10.236 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:ether_addr_equal include/linux/etherdevice.h:341 [inline] RIP: 0010:ieee80211_accept_frame net/mac80211/rx.c:4070 [inline] RIP: 0010:ieee80211_prepare_and_rx_handle+0x1e61/0x5890 net/mac80211/rx.c:4589 Code: 74 85 c0 0f 84 4a f4 ff ff e8 3b 3a 80 fd 48 8d bd 4a 0a 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 69 3e ac fd RSP: 0018:ffff88806ce09b00 EFLAGS: 00000212 RAX: dffffc0000000000 RBX: ffff88804b752450 RCX: ffffffff83c085a4 RDX: 0000000000000000 RSI: ffffffff83c085b5 RDI: ffff888046f2d60a RBP: ffff888046f2cbc0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000000 R14: ffff88806ce09d98 R15: ffff88804b5c9500 FS: 00007f541224c700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000001cdc6000 CR4: 0000000000350ef0 Call Trace: __ieee80211_rx_handle_packet net/mac80211/rx.c:4666 [inline] ieee80211_rx_list+0xdd0/0x2370 net/mac80211/rx.c:4846 ieee80211_rx_napi+0xdc/0x3c0 net/mac80211/rx.c:4867 ieee80211_rx include/net/mac80211.h:4502 [inline] ieee80211_tasklet_handler+0xd3/0x130 net/mac80211/main.c:237 tasklet_action_common.constprop.0+0x244/0x2f0 kernel/softirq.c:560 __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:unwind_next_frame+0xdea/0x1a90 arch/x86/kernel/unwind_orc.c:605 Code: 84 92 f6 ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 41 08 00 00 41 3b 5d 00 <0f> 84 16 05 00 00 b8 01 00 00 00 65 ff 0d 84 ee f1 7e e9 b8 f6 ff RSP: 0018:ffff8880485ff780 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 1ffff110090bff13 RDX: 1ffff110090bff0b RSI: ffff8880485ffba0 RDI: ffff8880485ffba0 RBP: ffff8880485ff88d R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000032042 R11: 1ffff110090bfef8 R12: ffff8880485ffbd0 R13: ffff8880485ff858 R14: 1ffff110090bfef8 R15: ffffffff85a17b52 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] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc+0x159/0x310 mm/slub.c:2909 anon_vma_chain_alloc mm/rmap.c:137 [inline] anon_vma_clone+0xdc/0x590 mm/rmap.c:283 __split_vma+0x17c/0x4e0 mm/mmap.c:2759 split_vma+0x99/0xe0 mm/mmap.c:2801 mlock_fixup+0x3d2/0x540 mm/mlock.c:550 apply_vma_lock_flags+0x293/0x380 mm/mlock.c:619 do_mlock+0x20b/0x6b0 mm/mlock.c:711 __do_sys_mlock2 mm/mlock.c:738 [inline] __se_sys_mlock2 mm/mlock.c:728 [inline] __x64_sys_mlock2+0xbd/0x100 mm/mlock.c:728 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f5414cd6b19 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:00007f541224c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000145 RAX: ffffffffffffffda RBX: 00007f5414de9f60 RCX: 00007f5414cd6b19 RDX: 0000000000000000 RSI: 0000000000004000 RDI: 0000000020ffa000 RBP: 00007f5414d30f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffd37605df R14: 00007f541224c300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline] NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline] NMI backtrace for cpu 1 skipped: idling at default_idle+0xe/0x20 arch/x86/kernel/process.c:711 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 85 c0 test %eax,%eax 2: 0f 84 4a f4 ff ff je 0xfffff452 8: e8 3b 3a 80 fd callq 0xfd803a48 d: 48 8d bd 4a 0a 00 00 lea 0xa4a(%rbp),%rdi 14: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1b: fc ff df 1e: 48 89 fa mov %rdi,%rdx 21: 48 c1 ea 03 shr $0x3,%rdx 25: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx * 29: 48 89 f8 mov %rdi,%rax <-- trapping instruction 2c: 83 e0 07 and $0x7,%eax 2f: 83 c0 03 add $0x3,%eax 32: 38 d0 cmp %dl,%al 34: 7c 09 jl 0x3f 36: 84 d2 test %dl,%dl 38: 74 05 je 0x3f 3a: e8 69 3e ac fd callq 0xfdac3ea8