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* [syzbot] [block?] WARNING in mempool_init_node
@ 2024-06-02  4:23 syzbot
  0 siblings, 0 replies; only message in thread
From: syzbot @ 2024-06-02  4:23 UTC (permalink / raw)
  To: axboe, linux-block, linux-kernel, syzkaller-bugs

Hello,

syzbot found the following issue on:

HEAD commit:    e0cce98fe279 Merge tag 'tpmdd-next-6.10-rc2' of git://git...
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=176e80ec980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=733cc7a95171d8e7
dashboard link: https://syzkaller.appspot.com/bug?extid=9c496b2b58571de670a3
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: i386

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-e0cce98f.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/eb24795b031d/vmlinux-e0cce98f.xz
kernel image: https://storage.googleapis.com/syzbot-assets/bcfa9241b1bb/bzImage-e0cce98f.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+9c496b2b58571de670a3@syzkaller.appspotmail.com

------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(l->owner)
WARNING: CPU: 3 PID: 6747 at include/linux/local_lock_internal.h:30 local_lock_acquire include/linux/local_lock_internal.h:30 [inline]
WARNING: CPU: 3 PID: 6747 at include/linux/local_lock_internal.h:30 ___slab_alloc+0x16c2/0x1870 mm/slub.c:3715
Modules linked in:
CPU: 3 PID: 6747 Comm: syz-executor.1 Not tainted 6.10.0-rc1-syzkaller-00021-ge0cce98fe279 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:local_lock_acquire include/linux/local_lock_internal.h:30 [inline]
RIP: 0010:___slab_alloc+0x16c2/0x1870 mm/slub.c:3715
Code: 9a 02 85 c0 74 09 83 3d 2f 45 01 0e 00 74 21 90 e9 30 ff ff ff 90 48 c7 c6 7f 8c 37 8d 48 c7 c7 c8 57 37 8d e8 cf 58 6f ff 90 <0f> 0b 90 90 eb c6 90 48 c7 c6 88 8c 37 8d 48 c7 c7 c8 57 37 8d e8
RSP: 0018:ffffc9000715f200 EFLAGS: 00010082
RAX: 0000000000000000 RBX: 0000000000000246 RCX: ffffc90002f82000
RDX: 0000000000040000 RSI: ffffffff81510236 RDI: 0000000000000001
RBP: ffffc9000715f2e0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 000000002d2d2d2d R12: ffff88801dd74880
R13: ffff888026ef1400 R14: ffffe8ffad369220 R15: ffffe8ffad369200
FS:  0000000000000000(0000) GS:ffff88802c300000(0063) knlGS:00000000f5ea4b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000ee082000 CR3: 000000004abc2000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3756
 __slab_alloc_node mm/slub.c:3809 [inline]
 slab_alloc_node mm/slub.c:3988 [inline]
 kmem_cache_alloc_noprof+0x2ae/0x2f0 mm/slub.c:4007
 mempool_init_node+0x31e/0x760 mm/mempool.c:217
 mempool_init_noprof+0x3a/0x50 mm/mempool.c:246
 bioset_init+0x324/0x7a0 block/bio.c:1785
 bch2_fs_io_read_init+0x29/0xc0 fs/bcachefs/io_read.c:1216
 bch2_fs_alloc+0x19b0/0x2550 fs/bcachefs/super.c:918
 bch2_fs_open+0x713/0x10f0 fs/bcachefs/super.c:2102
 bch2_mount+0xd41/0x1090 fs/bcachefs/fs.c:1917
 legacy_get_tree+0x109/0x220 fs/fs_context.c:662
 vfs_get_tree+0x8f/0x380 fs/super.c:1780
 do_new_mount fs/namespace.c:3352 [inline]
 path_mount+0x6e1/0x1f10 fs/namespace.c:3679
 do_mount fs/namespace.c:3692 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount fs/namespace.c:3875 [inline]
 __ia32_sys_mount+0x295/0x320 fs/namespace.c:3875
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf72b2579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f5ea4400 EFLAGS: 00000292 ORIG_RAX: 0000000000000015
RAX: ffffffffffffffda RBX: 00000000f5ea4460 RCX: 0000000020011a40
RDX: 0000000020011a00 RSI: 0000000001200014 RDI: 00000000f5ea44a0
RBP: 00000000f5ea4460 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	10 06                	adc    %al,(%rsi)
   2:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
   6:	10 07                	adc    %al,(%rdi)
   8:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
   c:	10 08                	adc    %cl,(%rax)
   e:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  1e:	00 51 52             	add    %dl,0x52(%rcx)
  21:	55                   	push   %rbp
  22:	89 e5                	mov    %esp,%ebp
  24:	0f 34                	sysenter
  26:	cd 80                	int    $0x80
* 28:	5d                   	pop    %rbp <-- trapping instruction
  29:	5a                   	pop    %rdx
  2a:	59                   	pop    %rcx
  2b:	c3                   	ret
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	90                   	nop
  2f:	90                   	nop
  30:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi
  37:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi


---
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2024-06-02  4:23 [syzbot] [block?] WARNING in mempool_init_node syzbot

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