watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor:5482] Modules linked in: irq event stamp: 2181239 hardirqs last enabled at (2181238): [] asm_sysvec_apic_timer_interrupt+0x16/0x20 hardirqs last disabled at (2181239): [] sysvec_apic_timer_interrupt+0xb/0xc0 softirqs last enabled at (2138678): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (2138689): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 5482 Comm: syz-executor Not tainted 6.0.0-rc3-next-20220829 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:__sanitizer_cov_trace_pc+0xd/0x70 Code: a8 01 00 00 e8 b4 ff ff ff 31 c0 e9 2d 60 1a 03 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 65 8b 05 99 93 bc 7e 89 c1 48 8b 34 24 <81> e1 00 01 00 00 65 48 8b 14 25 c0 6e 02 00 a9 00 01 ff 00 74 0e RSP: 0018:ffff88806ce09c88 EFLAGS: 00000202 RAX: 0000000000000101 RBX: 0000000000000001 RCX: 0000000000000101 RDX: ffff88803725b580 RSI: ffffffff821833fd RDI: 0000000000000005 RBP: ffff88800c0f7440 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88800c0f7410 R13: 0000000000000000 R14: ffff8880091ce600 R15: ffffe8ffffc03400 FS: 00005555559ab400(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffea9e74080 CR3: 000000001bd36000 CR4: 0000000000350ef0 Call Trace: __sbq_wake_up+0x6d/0x3d0 sbitmap_queue_clear+0xad/0x210 blk_mq_put_tag+0xd8/0x160 __blk_mq_free_request+0x2e0/0x380 blk_mq_free_request+0x35d/0x500 __blk_mq_end_request+0x358/0x580 scsi_end_request+0x472/0x9a0 scsi_io_completion+0xbc/0x2070 scsi_complete+0x114/0x560 blk_complete_reqs+0xb2/0xf0 __do_softirq+0x1c8/0x8d0 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x5/0x20 common_interrupt+0xa4/0xc0 asm_common_interrupt+0x22/0x40 RIP: 0010:_raw_spin_unlock_irqrestore+0x2e/0x60 Code: 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 4a 4e 05 fd 48 89 ef e8 b2 c3 05 fd 80 e7 02 74 06 e8 68 df 27 fd fb bf 01 00 00 00 0d 51 fb fc 65 8b 05 b6 99 dd 7b 85 c0 74 07 5b 5d e9 2b 66 3b RSP: 0018:ffff888038c37ae8 EFLAGS: 00000206 RAX: 000000000020a23f RBX: 0000000000000286 RCX: ffffffff8129855f RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffff8880102975f0 R08: 0000000000000001 R09: ffffffff86cb4817 R10: fffffbfff0d96902 R11: 0000000000000001 R12: ffffc90006c08000 R13: ffffed1002052ec6 R14: ffffc90006be3000 R15: 0000000000000286 scan_gray_list+0x192/0x400 kmemleak_scan+0x85a/0x16f0 kmemleak_write+0x570/0x680 full_proxy_write+0x11d/0x190 vfs_write+0x2cb/0xd90 ksys_write+0x127/0x250 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f6ba98a15c3 Code: 16 00 00 00 eb ae 90 b8 6e 00 00 00 eb a6 e8 44 ef 04 00 0f 1f 40 00 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18 RSP: 002b:00007ffea9e366b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007ffea9e36cf8 RCX: 00007f6ba98a15c3 RDX: 0000000000000004 RSI: 00007f6ba9957ed9 RDI: 0000000000000003 RBP: 0000000000000003 R08: 00000000000001e5 R09: 00007ffea9e74080 R10: 00007ffea9e74090 R11: 0000000000000246 R12: 00007f6ba98a3b10 R13: 00007ffea9e37ee6 R14: 0000000000000000 R15: 0000000000076888 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0xb/0x10 ---------------- Code disassembly (best guess): 0: a8 01 test $0x1,%al 2: 00 00 add %al,(%rax) 4: e8 b4 ff ff ff callq 0xffffffbd 9: 31 c0 xor %eax,%eax b: e9 2d 60 1a 03 jmpq 0x31a603d 10: 66 66 2e 0f 1f 84 00 data16 nopw %cs:0x0(%rax,%rax,1) 17: 00 00 00 00 1b: 66 90 xchg %ax,%ax 1d: 65 8b 05 99 93 bc 7e mov %gs:0x7ebc9399(%rip),%eax # 0x7ebc93bd 24: 89 c1 mov %eax,%ecx 26: 48 8b 34 24 mov (%rsp),%rsi * 2a: 81 e1 00 01 00 00 and $0x100,%ecx <-- trapping instruction 30: 65 48 8b 14 25 c0 6e mov %gs:0x26ec0,%rdx 37: 02 00 39: a9 00 01 ff 00 test $0xff0100,%eax 3e: 74 0e je 0x4e