watchdog: BUG: soft lockup - CPU#0 stuck for 24s! [syz-executor.7:4331] Modules linked in: irq event stamp: 5550561 hardirqs last enabled at (5550560): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (5550561): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (5476308): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (5476311): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 4331 Comm: syz-executor.7 Not tainted 6.2.0-rc2-next-20230106 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:___slab_alloc+0x31/0x1080 Code: 54 41 89 d4 55 48 89 fd 53 4c 89 c3 65 4c 8b 34 25 80 89 03 00 48 81 ec 88 00 00 00 89 74 24 08 48 89 4c 24 20 44 89 4c 24 1c <65> 48 8b 04 25 28 00 00 00 48 89 84 24 80 00 00 00 31 c0 48 8b 43 RSP: 0018:ffff88806ce09968 EFLAGS: 00000292 RAX: 0000000000000000 RBX: ffff88806ce3cb80 RCX: ffffffff834da63d RDX: 00000000ffffffff RSI: 0000000000082a20 RDI: ffff888008441c80 RBP: ffff888008441c80 R08: ffff88806ce3cb80 R09: 0000000000000200 R10: fffffbfff0ec9d29 R11: 0000000000000001 R12: 00000000ffffffff R13: 00000000ffffffff R14: ffff888016899ac0 R15: 0000000000000200 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f81a0acf1f0 CR3: 0000000013572000 CR4: 0000000000350ef0 Call Trace: __slab_alloc.constprop.0+0x4d/0x90 __kmem_cache_alloc_node+0x2d0/0x2f0 __kmalloc_node_track_caller+0x43/0xb0 __alloc_skb+0xe9/0x310 skb_copy+0x13d/0x3d0 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb6d/0x1360 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xb10 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xcb0 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x913 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x9/0x30 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:lock_acquire.part.0+0x14d/0x340 Code: 87 84 48 83 c4 20 e8 c2 34 16 03 b8 ff ff ff ff 65 0f c1 05 6d 68 d6 7e 83 f8 01 0f 85 9f 01 00 00 48 85 ed 0f 85 90 01 00 00 <48> b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00 00 00 00 48 c7 RSP: 0018:ffff888018a9f558 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff11003153ead RCX: 0000000000000f94 RDX: 1ffff11002d13483 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000200 R08: 0000000000000000 R09: ffffffff8764e94f R10: fffffbfff0ec9d29 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff88806ce35000 lru_add_drain+0x83/0x410 free_pages_and_swap_cache+0x1c/0xa0 tlb_batch_pages_flush+0xa8/0x1b0 unmap_page_range+0x164b/0x2c10 unmap_single_vma+0x190/0x2a0 unmap_vmas+0x226/0x380 exit_mmap+0x158/0x6a0 mmput+0xd5/0x390 do_exit+0x99b/0x2780 do_group_exit+0xd4/0x2a0 get_signal+0x2255/0x2390 arch_do_signal_or_restart+0x79/0x5a0 exit_to_user_mode_prepare+0x131/0x1a0 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f4dd9bcab19 Code: Unable to access opcode bytes at 0x7f4dd9bcaaef. RSP: 002b:00007f4dd7140188 EFLAGS: 00000246 ORIG_RAX: 00000000000001ae RAX: 000000000000000b RBX: 00007f4dd9cddf60 RCX: 00007f4dd9bcab19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000 RBP: 00007f4dd9c24f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffff87d443f R14: 00007f4dd7140300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4328 Comm: syz-executor.4 Not tainted 6.2.0-rc2-next-20230106 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:lapic_next_deadline+0x25/0x50 Code: 90 90 90 90 90 f3 0f 1e fa 0f ae f0 0f ae e8 0f 31 48 c1 e2 20 b9 e0 06 00 00 48 09 c2 48 8d 04 fa 48 89 c2 48 c1 ea 20 0f 30 <66> 90 31 c0 e9 76 79 34 03 48 89 c6 31 d2 bf e0 06 00 00 e8 83 d3 RSP: 0018:ffff88806cf09840 EFLAGS: 00000017 RAX: 000000d1ce07d200 RBX: 0000000000000000 RCX: 00000000000006e0 RDX: 00000000000000d1 RSI: ffff88806cf28140 RDI: 000000000000015d RBP: ffff88806cf28140 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000246 R11: 0000000000000001 R12: 000000000000015d R13: 0000000000000000 R14: 0000000000000000 R15: ffff88806cf2b8c0 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa7f43ca540 CR3: 000000003cbf4000 CR4: 0000000000350ee0 Call Trace: clockevents_program_event+0x248/0x360 tick_program_event+0xb0/0x150 hrtimer_interrupt+0x36a/0x770 __sysvec_apic_timer_interrupt+0x148/0x510 sysvec_apic_timer_interrupt+0x3f/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:queued_spin_lock_slowpath+0x128/0xc90 Code: 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 e6 0a 00 00 48 81 c4 88 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 fe 1f 00 00 f3 90 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e4 00 00 RSP: 0018:ffff88806cf09a28 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff844463cb RDX: fffffbfff0b48a71 RSI: 0000000000000004 RDI: ffffffff85a45380 RBP: ffffffff85a45380 R08: 0000000000000000 R09: ffffffff85a45383 R10: fffffbfff0b48a70 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0b48a70 R14: 0000000000000001 R15: 1ffff1100d9e1346 do_raw_spin_lock+0x1e0/0x270 mac80211_hwsim_tx_frame_no_nl.isra.0+0x6f1/0x1360 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xb10 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xcb0 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x913 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x9/0x30 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:page_remove_rmap+0x4/0x7e0 Code: e8 41 b5 0a 00 e9 31 fe ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 <41> 57 41 56 41 55 41 54 49 89 f4 55 48 89 fd 53 89 d3 e8 65 9c d6 RSP: 0018:ffff8880451576f8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff8880158d9340 RDI: ffffea00011c4d40 RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880096b53f0 R13: ffffea00011c4d40 R14: ffffea00011c4d70 R15: ffff888045157ad8 unmap_page_range+0x1fdf/0x2c10 unmap_single_vma+0x190/0x2a0 unmap_vmas+0x226/0x380 exit_mmap+0x158/0x6a0 mmput+0xd5/0x390 do_exit+0x99b/0x2780 do_group_exit+0xd4/0x2a0 get_signal+0x2255/0x2390 arch_do_signal_or_restart+0x79/0x5a0 exit_to_user_mode_prepare+0x131/0x1a0 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fe8f832ab19 Code: Unable to access opcode bytes at 0x7fe8f832aaef. RSP: 002b:00007fe8f58a0188 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: 0000000000000009 RBX: 00007fe8f843df60 RCX: 00007fe8f832ab19 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000002 RBP: 00007fe8f8384f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffffe46e38f R14: 00007fe8f58a0300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 54 push %rsp 1: 41 89 d4 mov %edx,%r12d 4: 55 push %rbp 5: 48 89 fd mov %rdi,%rbp 8: 53 push %rbx 9: 4c 89 c3 mov %r8,%rbx c: 65 4c 8b 34 25 80 89 mov %gs:0x38980,%r14 13: 03 00 15: 48 81 ec 88 00 00 00 sub $0x88,%rsp 1c: 89 74 24 08 mov %esi,0x8(%rsp) 20: 48 89 4c 24 20 mov %rcx,0x20(%rsp) 25: 44 89 4c 24 1c mov %r9d,0x1c(%rsp) * 2a: 65 48 8b 04 25 28 00 mov %gs:0x28,%rax <-- trapping instruction 31: 00 00 33: 48 89 84 24 80 00 00 mov %rax,0x80(%rsp) 3a: 00 3b: 31 c0 xor %eax,%eax 3d: 48 rex.W 3e: 8b .byte 0x8b 3f: 43 rex.XB