watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.1:16715] Modules linked in: irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x1dba/0x6df0 softirqs last enabled at (0): [] copy_process+0x1dfe/0x6df0 softirqs last disabled at (0): [<0000000000000000>] 0x0 CPU: 0 PID: 16715 Comm: syz-executor.1 Tainted: G B 6.0.0-rc4-next-20220906 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:__sbq_wake_up+0x106/0x3d0 Code: 2e ff 4c 63 c3 48 8b 04 24 48 b9 00 00 00 00 00 fc ff df 49 c1 e0 07 4e 8d 34 00 4d 8d 6e 48 4c 89 e8 48 c1 e8 03 80 3c 08 00 <0f> 85 57 02 00 00 49 8b 46 48 49 39 c5 75 3d e8 16 5b 2e ff 83 c5 RSP: 0018:ffff88806ce09c90 EFLAGS: 00000246 RAX: 1ffff11001206669 RBX: 0000000000000006 RCX: dffffc0000000000 RDX: ffff888046171ac0 RSI: ffffffff8217c8ce RDI: ffff888008fd7a38 RBP: 0000000000000000 R08: 0000000000000300 R09: ffff888008fd7a37 R10: ffffed10011faf46 R11: 0000000000000001 R12: ffff888008fd7a10 R13: ffff888009033348 R14: ffff888009033300 R15: ffff888008fd7a34 FS: 00007f3150d46700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa52b22c3a4 CR3: 000000004c06a000 CR4: 0000000000350ef0 Call Trace: 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:folio_wait_bit+0x2/0x30 Code: 12 fd ff ff 4c 89 f7 e8 8c d0 1c 00 e9 50 fd ff ff e8 82 d0 1c 00 e9 50 ff ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 41 54 <41> 89 f4 55 48 89 fd e8 92 6e ea ff 44 89 e6 48 89 ef b9 01 00 00 RSP: 0018:ffff88801dba7430 EFLAGS: 00000212 RAX: 000000000001262a RBX: 0000000000000001 RCX: ffffc900007db000 RDX: 0000000000040000 RSI: 000000000000000f RDI: ffffea00012c2c80 RBP: ffffea00012c2c80 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: fffff94000258590 R13: dffffc0000000000 R14: 1ffffffff0b5bc04 R15: ffff888046a5de48 folio_wait_writeback+0x45/0x2b0 __filemap_fdatawait_range+0x12b/0x350 file_write_and_wait_range+0xed/0x130 ext4_sync_file+0x21d/0xfa0 vfs_fsync_range+0x13d/0x230 ext4_buffered_write_iter+0x37d/0x460 ext4_file_write_iter+0x3d5/0x1820 do_iter_readv_writev+0x211/0x3c0 do_iter_write+0x18b/0x700 vfs_iter_write+0x70/0xa0 iter_file_splice_write+0x73a/0xca0 direct_splice_actor+0x10f/0x170 splice_direct_to_actor+0x336/0x8c0 do_splice_direct+0x1b8/0x290 do_sendfile+0xb1d/0x1280 __x64_sys_sendfile64+0x1d1/0x210 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f31537d0b19 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:00007f3150d46188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f31538e3f60 RCX: 00007f31537d0b19 RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000008 RBP: 00007f315382af6d R08: 0000000000000000 R09: 0000000000000000 R10: 00000000fffffdef R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff74c3041f R14: 00007f3150d46300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 16729 Comm: syz-executor.0 Tainted: G B 6.0.0-rc4-next-20220906 #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 ed 16 1a 03 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 65 8b 05 59 4a 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:ffff88806cf09c88 EFLAGS: 00000246 RAX: 0000000000000102 RBX: 0000000000000006 RCX: 0000000000000102 RDX: ffff888044321ac0 RSI: ffffffff8217c999 RDI: 0000000000000004 RBP: 0000000000000006 R08: 0000000000000004 R09: 0000000000000006 R10: 0000000000000006 R11: 0000000000000001 R12: ffff888008fd7a10 R13: ffff888009033348 R14: ffff888009033300 R15: ffff888008fd7a34 FS: 00007fcaddc65700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2db22000 CR3: 0000000046524000 CR4: 0000000000350ee0 Call Trace: __sbq_wake_up+0x1a9/0x3d0 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 sysvec_call_function_single+0x8e/0xc0 asm_sysvec_call_function_single+0x16/0x20 RIP: 0010:_raw_spin_unlock_irqrestore+0x2e/0x60 Code: 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 ea 18 05 fd 48 89 ef e8 42 8e 05 fd 80 e7 02 74 06 e8 f8 d2 27 fd fb bf 01 00 00 00 3d 19 fb fc 65 8b 05 d6 44 dd 7b 85 c0 74 07 5b 5d e9 4b 11 3b RSP: 0018:ffff88804bd0f7f8 EFLAGS: 00000246 RAX: 0000000000000007 RBX: 0000000000000282 RCX: 1ffffffff0b5f9e1 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001 RBP: ffff888007c4e900 R08: 0000000000000000 R09: 0000000000000000 R10: ffffed1000f89d20 R11: 0000000000000001 R12: ffff88801b5c1290 R13: ffff888007c4f780 R14: ffff888007c4e900 R15: ffff88800997e870 get_partial_node.part.0+0x1e5/0x3a0 ___slab_alloc+0xb66/0x10d0 __slab_alloc.constprop.0+0x45/0x90 kmem_cache_alloc+0x2f1/0x3e0 __create_object+0x3d/0xc10 kmem_cache_alloc+0x23c/0x3e0 __alloc_file+0x21/0x240 alloc_empty_file+0x6d/0x170 path_openat+0xd4/0x2800 do_filp_open+0x1b6/0x410 do_sys_openat2+0x171/0x4c0 __x64_sys_openat+0x13f/0x1f0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fcae06efb19 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:00007fcaddc65188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fcae0802f60 RCX: 00007fcae06efb19 RDX: 000000000000c042 RSI: 0000000020000100 RDI: ffffffffffffff9c RBP: 00007fcae0749f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe3b4ddd9f R14: 00007fcaddc65300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 2e ff 4c 63 c3 decl %cs:-0x3d(%rbx,%riz,2) 5: 48 8b 04 24 mov (%rsp),%rax 9: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 10: fc ff df 13: 49 c1 e0 07 shl $0x7,%r8 17: 4e 8d 34 00 lea (%rax,%r8,1),%r14 1b: 4d 8d 6e 48 lea 0x48(%r14),%r13 1f: 4c 89 e8 mov %r13,%rax 22: 48 c1 e8 03 shr $0x3,%rax 26: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) * 2a: 0f 85 57 02 00 00 jne 0x287 <-- trapping instruction 30: 49 8b 46 48 mov 0x48(%r14),%rax 34: 49 39 c5 cmp %rax,%r13 37: 75 3d jne 0x76 39: e8 16 5b 2e ff callq 0xff2e5b54 3e: 83 .byte 0x83 3f: c5 .byte 0xc5