syz_tun: refused to change device tx_queue_len watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.5:6368] Modules linked in: irq event stamp: 5408187 hardirqs last enabled at (5408186): [] _raw_spin_unlock_irqrestore+0x2c/0x60 hardirqs last disabled at (5408187): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (5407164): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (5407167): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 6368 Comm: syz-executor.5 Not tainted 6.1.0-rc7-next-20221202 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:_raw_spin_unlock_irqrestore+0x32/0x60 Code: 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 86 c7 ea fc 48 89 ef e8 4e 3f eb fc 80 e7 02 74 06 e8 e4 d7 0e fd fb bf 01 00 00 00 19 9c e0 fc 65 8b 05 9a 36 c2 7b 85 c0 74 07 5b 5d e9 4b 29 00 RSP: 0018:ffff88806ce09ea0 EFLAGS: 00000202 RAX: 00000000005285ba RBX: 0000000000000246 RCX: ffffffff812b7bcf RDX: 0000000000000000 RSI: 0000000000000101 RDI: 0000000000000001 RBP: ffff88801fef95d0 R08: 0000000000000001 R09: ffffffff8762b91f R10: fffffbfff0ec5723 R11: 0000000000000001 R12: 0000000000000000 R13: ffff88801fef95d0 R14: ffff88801fef9610 R15: 0000000000000001 FS: 00007f39e3f58700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002001c000 CR3: 00000000166a2000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: skb_dequeue+0x129/0x180 ieee80211_tasklet_handler+0x38/0x140 tasklet_action_common.constprop.0+0x208/0x2f0 __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+0x0/0x70 Code: be a8 01 00 00 e8 a0 ff ff ff 31 c0 e9 8d 67 f8 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 0f 1e fa 65 8b 05 ad 74 ba 7e 89 c1 48 8b 34 24 81 e1 00 01 00 RSP: 0018:ffff88804863f4c0 EFLAGS: 00000246 RAX: 0000000000000002 RBX: ffff8880491a0184 RCX: ffffffff81ad5e63 RDX: ffff8880459ad040 RSI: 0000000000000000 RDI: 0000000000000007 RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880491a1000 R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000 ext4_free_data+0xf7/0x3d0 ext4_free_branches+0x53b/0x6b0 ext4_free_branches+0x44d/0x6b0 ext4_free_branches+0x44d/0x6b0 ext4_ind_truncate+0x696/0x910 ext4_truncate+0x7e9/0x13d0 ext4_setattr+0x1cba/0x2940 notify_change+0xca5/0x1400 do_truncate+0x143/0x200 path_openat+0x20cc/0x29b0 do_filp_open+0x1ba/0x410 do_sys_openat2+0x171/0x4c0 __x64_sys_creat+0xcd/0x120 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f39e69e2b19 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:00007f39e3f58188 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f39e6af5f60 RCX: 00007f39e69e2b19 RDX: 0000000000000000 RSI: 0000000000000119 RDI: 0000000020000240 RBP: 00007f39e6a3cf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd0f6f942f R14: 00007f39e3f58300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0xf/0x20 ---------------- Code disassembly (best guess): 0: 48 83 c7 18 add $0x18,%rdi 4: 53 push %rbx 5: 48 89 f3 mov %rsi,%rbx 8: 48 8b 74 24 10 mov 0x10(%rsp),%rsi d: e8 86 c7 ea fc callq 0xfceac798 12: 48 89 ef mov %rbp,%rdi 15: e8 4e 3f eb fc callq 0xfceb3f68 1a: 80 e7 02 and $0x2,%bh 1d: 74 06 je 0x25 1f: e8 e4 d7 0e fd callq 0xfd0ed808 24: fb sti 25: bf 01 00 00 00 mov $0x1,%edi * 2a: e8 19 9c e0 fc callq 0xfce09c48 <-- trapping instruction 2f: 65 8b 05 9a 36 c2 7b mov %gs:0x7bc2369a(%rip),%eax # 0x7bc236d0 36: 85 c0 test %eax,%eax 38: 74 07 je 0x41 3a: 5b pop %rbx 3b: 5d pop %rbp 3c: e9 .byte 0xe9 3d: 4b 29 00 rex.WXB sub %rax,(%r8)