watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [syz-executor.7:13104] Modules linked in: irq event stamp: 4978417 hardirqs last enabled at (4978416): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4978417): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (4956514): [] irq_exit_rcu+0x11f/0x190 softirqs last disabled at (4956517): [] irq_exit_rcu+0x11f/0x190 CPU: 1 PID: 13104 Comm: syz-executor.7 Not tainted 6.2.0-rc4-next-20230117 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 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 de 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:ffff88806cf09a30 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff8444746b RDX: fffffbfff0b49155 RSI: 0000000000000004 RDI: ffffffff85a48aa0 RBP: ffffffff85a48aa0 R08: 0000000000000000 R09: ffffffff85a48aa3 R10: fffffbfff0b49154 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0b49154 R14: 0000000000000001 R15: 1ffff1100d9e1347 FS: 00007f1e9862d700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0046a91718 CR3: 000000001eb5c000 CR4: 0000000000350ee0 Call Trace: 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+0x274/0x8ff irq_exit_rcu+0x11f/0x190 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:folio_unlock+0x4/0xb0 Code: 00 f0 ff ff 0f 86 58 5c d4 02 e9 4c 5c d4 02 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <55> 48 89 fd 53 e8 12 21 ea ff be 08 00 00 00 48 89 ef e8 15 02 1e RSP: 0018:ffff8880452f7a18 EFLAGS: 00000216 RAX: 000000000001c4f4 RBX: 0000000000000001 RCX: ffffc90002fe7000 RDX: 0000000000040000 RSI: ffffffff8162a72d RDI: ffffea0000c341c0 RBP: ffffea0000c341c0 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff88801bf36610 R14: 0000000000001000 R15: 0000000000000000 generic_write_end+0xef/0x3d0 ext4_da_write_end+0x162/0x950 generic_perform_write+0x318/0x580 ext4_buffered_write_iter+0x164/0x460 ext4_file_write_iter+0x3ff/0x1930 vfs_write+0x9c7/0xdd0 ksys_write+0x12b/0x260 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f1e9b0b7b19 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:00007f1e9862d188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1e9b1caf60 RCX: 00007f1e9b0b7b19 RDX: 00000000000292e9 RSI: 0000000020000080 RDI: 0000000000000006 RBP: 00007f1e9b111f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd480f8b2f R14: 00007f1e9862d300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 13092 Comm: syz-executor.2 Not tainted 6.2.0-rc4-next-20230117 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:irqentry_enter+0x0/0x60 Code: 3c 24 e8 c3 f8 ff ff e9 4e 3f 0e fd 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <66> 0f 1f 00 f6 87 88 00 00 00 03 75 3d 48 8b 3c 24 65 48 8b 04 25 RSP: 0018:ffff88806ce09798 EFLAGS: 00000083 RAX: ffff88806ce097b8 RBX: 0000000000000000 RCX: ffffffff846016cd RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88806ce097b8 RBP: ffff88806ce097b8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007fc39ef13700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020010000 CR3: 000000000f128000 CR4: 0000000000350ef0 DR0: 0000000020000100 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: sysvec_apic_timer_interrupt+0xf/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:__is_insn_slot_addr+0x88/0x290 Code: ff 4c 8d b3 a8 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 80 3c 02 00 0f 85 fa 01 00 00 48 8b 9b a8 00 00 00 <4c> 39 f3 74 78 49 bd 00 00 00 00 00 fc ff df e8 c4 82 ff ff 48 8d RSP: 0018:ffff88806ce09868 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffffffff85651d88 RCX: 0000000000000100 RDX: 1ffffffff0aca3b1 RSI: ffffffff8149ff6f RDI: 0000000000000001 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 00007fc3a199db19 R13: 0000000000000000 R14: ffffffff85651d88 R15: ffff8880439e0e30 kernel_text_address+0x5b/0xc0 __kernel_text_address+0xd/0x40 unwind_get_return_address+0x59/0xa0 arch_stack_walk+0x9d/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 __kasan_record_aux_stack+0x95/0xb0 __call_rcu_common.constprop.0+0x6a/0xa00 kmem_cache_free+0xb9/0x510 kfree_skbmem+0xef/0x1b0 consume_skb+0xd8/0x170 mac80211_hwsim_tx_frame+0x1f6/0x2a0 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+0x274/0x8ff do_softirq.part.0+0xd1/0x120 __local_bh_enable_ip+0x10a/0x130 ip_finish_output2+0x73b/0x2120 ip_do_fragment+0x1e14/0x24e0 ip_fragment.constprop.0+0x16b/0x240 __ip_finish_output.part.0+0x883/0xd10 ip_output+0x2ec/0x8e0 ip_push_pending_frames+0x30b/0x5c0 raw_sendmsg+0x120d/0x2c00 inet_sendmsg+0x121/0x150 sock_sendmsg+0x19b/0x200 ____sys_sendmsg+0x74e/0x980 ___sys_sendmsg+0x110/0x1b0 __sys_sendmsg+0xf7/0x1d0 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fc3a199db19 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:00007fc39ef13188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fc3a1ab0f60 RCX: 00007fc3a199db19 RDX: 0000000000000000 RSI: 0000000020000780 RDI: 0000000000000005 RBP: 00007fc3a19f7f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffea5efcfdf R14: 00007fc39ef13300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 00 65 48 add %ah,0x48(%rbp) 5: 2b 04 25 28 00 00 00 sub 0x28,%eax c: 0f 85 e6 0a 00 00 jne 0xaf8 12: 48 81 c4 88 00 00 00 add $0x88,%rsp 19: 5b pop %rbx 1a: 5d pop %rbp 1b: 41 5c pop %r12 1d: 41 5d pop %r13 1f: 41 5e pop %r14 21: 41 5f pop %r15 23: e9 de 1f 00 00 jmpq 0x2006 28: f3 90 pause * 2a: e9 71 ff ff ff jmpq 0xffffffa0 <-- trapping instruction 2f: 44 8b 74 24 48 mov 0x48(%rsp),%r14d 34: 41 81 fe 00 01 00 00 cmp $0x100,%r14d 3b: 0f .byte 0xf 3c: 84 e4 test %ah,%ah