watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.0:7343] Modules linked in: irq event stamp: 5265743 hardirqs last enabled at (5265742): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (5265743): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (5225288): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (5225291): [] __irq_exit_rcu+0x11b/0x180 CPU: 1 PID: 7343 Comm: syz-executor.0 Not tainted 6.2.0-rc1-next-20221226 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__create_object+0x2be/0xc40 Code: fc ff df 41 c7 87 b4 00 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 77 07 00 00 49 8d bf d0 00 00 00 4c 8b 35 f2 9d c0 03 <48> b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f RSP: 0018:ffff88806cf09a90 EFLAGS: 00000246 RAX: 1ffffffff0a81e40 RBX: 0000000000000200 RCX: 1ffff11001b2e808 RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffff88800d9740d0 RBP: ffff88804ba3a800 R08: 0000000000000001 R09: ffff88800d974093 R10: ffffed1001b2e812 R11: 0000000000000001 R12: ffff88800d974048 R13: 0000000000000000 R14: 00000001000a70a9 R15: ffff88800d974000 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2be21000 CR3: 0000000005426000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __kmem_cache_alloc_node+0x25b/0x400 __kmalloc_node_track_caller+0x43/0xb0 __alloc_skb+0xe9/0x310 __netdev_alloc_skb+0x76/0x3e0 __ieee80211_beacon_get+0x3d9/0x1310 ieee80211_beacon_get_tim+0x99/0x4f0 mac80211_hwsim_beacon_tx+0x1d2/0xab0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x74/0x180 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xc70 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x8f9 __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:__sanitizer_cov_trace_pc+0xb/0x70 Code: c0 e9 1d fc f7 02 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 65 8b 05 7d ab ba 7e <89> c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 00 89 03 00 a9 RSP: 0018:ffff88804bba76c8 EFLAGS: 00000246 RAX: 0000000080000001 RBX: 0000000000000000 RCX: ffffffff817233f2 RDX: ffff888040ad3580 RSI: 0000000000000000 RDI: 0000000000000005 RBP: ffffea0000d4e000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880193e8680 R13: ffffea0000d4e000 R14: ffffea0000d4e030 R15: ffff88804bba7ad8 page_remove_rmap+0x4f/0x610 unmap_page_range+0x1fdf/0x2c10 unmap_single_vma+0x190/0x2a0 unmap_vmas+0x226/0x380 exit_mmap+0x158/0x680 mmput+0xd5/0x390 do_exit+0x99b/0x2760 do_group_exit+0xd4/0x2a0 get_signal+0x21b7/0x22f0 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: 0033:0x7f5df69b5b19 Code: Unable to access opcode bytes at 0x7f5df69b5aef. RSP: 002b:00007f5df3f2b188 EFLAGS: 00000246 ORIG_RAX: 00000000000000f8 RAX: ffffffffffffffed RBX: 00007f5df6ac8f60 RCX: 00007f5df69b5b19 RDX: 0000000020000540 RSI: 0000000020000ac0 RDI: 0000000020000a80 RBP: 00007f5df6a0ff6d R08: fffffffffffffffb R09: 0000000000000000 R10: 0000000000000048 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffca5394f2f R14: 00007f5df3f2b300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0xf/0x20 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: df 41 c7 filds -0x39(%rcx) 3: 87 b4 00 00 00 00 00 xchg %esi,0x0(%rax,%rax,1) a: 00 00 add %al,(%rax) c: 48 c1 e8 03 shr $0x3,%rax 10: 80 3c 10 00 cmpb $0x0,(%rax,%rdx,1) 14: 0f 85 77 07 00 00 jne 0x791 1a: 49 8d bf d0 00 00 00 lea 0xd0(%r15),%rdi 21: 4c 8b 35 f2 9d c0 03 mov 0x3c09df2(%rip),%r14 # 0x3c09e1a * 28: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax <-- trapping instruction 2f: fc ff df 32: 48 89 fa mov %rdi,%rdx 35: 48 c1 ea 03 shr $0x3,%rdx 39: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 3d: 0f .byte 0xf