watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.5:5603] Modules linked in: irq event stamp: 3924507 hardirqs last enabled at (3924506): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (3924507): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (3853230): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (3853233): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 5603 Comm: syz-executor.5 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:kfree+0x10f/0x190 Code: e8 e6 cf ff ff 65 ff 0d 77 85 9a 7e 0f 85 1b ff ff ff 0f 1f 44 00 00 e9 11 ff ff ff 65 ff 05 60 85 9a 7e 48 8b 05 f1 97 65 04 1c e8 c9 ff 85 c0 74 17 65 ff 0d 49 85 9a 7e 0f 85 04 ff ff ff RSP: 0018:ffff88806ce09c40 EFLAGS: 00000203 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000100 RDX: ffff888038d45040 RSI: ffffffff834b2828 RDI: ffff888043325800 RBP: ffff888043325800 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888043325800 R13: 0000000000000000 R14: 0000000000000002 R15: ffff888043ac8e30 FS: 00007f380b616700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8e917d5427 CR3: 0000000044932000 CR4: 0000000000350ef0 Call Trace: skb_release_data+0x6d8/0x810 consume_skb+0xcb/0x170 mac80211_hwsim_tx_frame+0x1f6/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xab0 __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:_raw_spin_unlock_irqrestore+0x32/0x60 Code: 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 26 29 eb fc 48 89 ef e8 3e a0 eb fc 80 e7 02 74 06 e8 24 41 0f fd fb bf 01 00 00 00 09 fd e0 fc 65 8b 05 da d8 c2 7b 85 c0 74 07 5b 5d e9 4b 29 00 RSP: 0018:ffff888044d67408 EFLAGS: 00000202 RAX: 0000000000368c43 RBX: 0000000000000282 RCX: ffffffff812b3b2f RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffffff856c8320 R08: 0000000000000001 R09: ffffffff8763291f R10: fffffbfff0ec6523 R11: 0000000000000001 R12: ffff88800d567980 R13: 0000000000092c40 R14: 0000000000092c40 R15: 00000000000000f0 kasan_quarantine_reduce+0x18c/0x230 __kasan_slab_alloc+0x4c/0x70 kmem_cache_alloc+0x1e1/0x410 __create_object+0x3d/0xc40 __kmem_cache_alloc_node+0x25b/0x400 __kmalloc+0x46/0xc0 ext4_ext_remove_space+0x1593/0x40d0 ext4_ext_truncate+0x330/0x3f0 ext4_truncate+0xe2a/0x13d0 ext4_setattr+0x1c73/0x2700 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: 0033:0x7f380e0c1b19 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:00007f380b616188 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f380e1d5020 RCX: 00007f380e0c1b19 RDX: 0000000000000000 RSI: 0000000000000119 RDI: 0000000020000240 RBP: 00007f380e11bf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe751cf1bf R14: 00007f380b616300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 5568 Comm: syz-executor.2 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:lock_is_held_type+0x9e/0x130 Code: 09 00 00 65 ff 05 7a e7 c3 7b 85 c0 7f 12 e9 87 00 00 00 83 c3 01 41 3b 9c 24 58 09 00 00 7d 7a 48 63 c3 48 89 ee 48 8d 04 80 <4d> 8d 7c c5 00 4c 89 ff e8 75 fe ff ff 85 c0 74 d8 41 bd 01 00 00 RSP: 0018:ffff88806cf09268 EFLAGS: 00000097 RAX: 0000000000000005 RBX: 0000000000000001 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffff88806cf2b858 RDI: ffff888045dcd9a0 RBP: ffff88806cf2b858 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff888045dcd040 R13: ffff888045dcd9a0 R14: 00000000ffffffff R15: ffff888045dcd9a0 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555565bec58 CR3: 0000000018e5e000 CR4: 0000000000350ee0 Call Trace: __hrtimer_run_queues+0x77a/0xc70 hrtimer_interrupt+0x319/0x770 __sysvec_apic_timer_interrupt+0x148/0x500 sysvec_apic_timer_interrupt+0x3f/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 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 0f 1e fa 65 8b 05 7d ab ba 7e 89 c1 48 8b 34 24 81 e1 00 01 00 RSP: 0018:ffff88806cf09520 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 1ffff1100d9e12a5 RCX: ffffffff835110bf RDX: ffff888045dcd040 RSI: 0000000000000100 RDI: 0000000000000001 RBP: ffff8880145f6140 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000000 R14: ffff8880145f6198 R15: 0000000000000000 netif_rx_internal+0x3a7/0x5b0 __netif_rx+0x87/0xb0 loopback_xmit+0x283/0x730 dev_hard_start_xmit+0x175/0x810 __dev_queue_xmit+0x2aef/0x38d0 ip_finish_output2+0x137c/0x1fb0 __ip_finish_output.part.0+0x560/0xd10 ip_output+0x2ec/0x8e0 ip_local_out+0x357/0x4c0 __ip_queue_xmit+0x852/0x1a50 __tcp_transmit_skb+0x2a2a/0x3520 __tcp_send_ack.part.0+0x3b1/0x620 tcp_send_ack+0x81/0xa0 tcp_delack_timer_handler+0x212/0x330 tcp_delack_timer+0xa6/0x330 call_timer_fn+0x17d/0x600 expire_timers+0x225/0x320 run_timer_softirq+0x31f/0x8e0 __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_const_cmp1+0x4/0x20 Code: f2 48 89 fe bf 06 00 00 00 e9 b8 fe ff ff 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 <48> 8b 0c 24 40 0f b6 d6 40 0f b6 f7 bf 01 00 00 00 e9 86 fe ff ff RSP: 0018:ffff88801eab76f8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffffff816cca74 RDX: fffff940001e0249 RSI: 0000000000000000 RDI: 0000000000000000 RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffea0000f01247 R10: fffff940001e0248 R11: 0000000000000001 R12: ffff88800dd25890 R13: ffffea0000f01240 R14: ffffea0000f01270 R15: ffff88801eab7ad8 unmap_page_range+0x204d/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: 0033:0x7fdcaf5c5b19 Code: Unable to access opcode bytes at 0x7fdcaf5c5aef. RSP: 002b:00007fdcacb3b188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: 0000000000000000 RBX: 00007fdcaf6d8f60 RCX: 00007fdcaf5c5b19 RDX: 0000000020000000 RSI: 0000000000008914 RDI: 0000000000000003 RBP: 00007fdcaf61ff6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffde9fc040f R14: 00007fdcacb3b300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: e8 e6 cf ff ff callq 0xffffcfeb 5: 65 ff 0d 77 85 9a 7e decl %gs:0x7e9a8577(%rip) # 0x7e9a8583 c: 0f 85 1b ff ff ff jne 0xffffff2d 12: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 17: e9 11 ff ff ff jmpq 0xffffff2d 1c: 65 ff 05 60 85 9a 7e incl %gs:0x7e9a8560(%rip) # 0x7e9a8583 23: 48 8b 05 f1 97 65 04 mov 0x46597f1(%rip),%rax # 0x465981b * 2a: e8 1c e8 c9 ff callq 0xffc9e84b <-- trapping instruction 2f: 85 c0 test %eax,%eax 31: 74 17 je 0x4a 33: 65 ff 0d 49 85 9a 7e decl %gs:0x7e9a8549(%rip) # 0x7e9a8583 3a: 0f 85 04 ff ff ff jne 0xffffff44