syzbot


kernel BUG in btrfs_ioctl_add_dev

Status: upstream: reported C repro on 2023/02/20 07:54
Subsystems: btrfs (incorrect?)
Reported-by: syzbot+afdee14f9fd3d20448e7@syzkaller.appspotmail.com
First crash: 31d, last: 10h02m

Cause bisection: failed (error log, bisect log)

Sample crash report:
assertion failed: fs_info->exclusive_operation == BTRFS_EXCLOP_BALANCE || fs_info->exclusive_operation == BTRFS_EXCLOP_DEV_ADD, in fs/btrfs/ioctl.c:457
------------[ cut here ]------------
kernel BUG at fs/btrfs/messages.c:259!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 5468 Comm: syz-executor196 Not tainted 6.2.0-syzkaller-13163-g04a357b1f6f0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
RIP: 0010:btrfs_assertfail+0x18/0x20 fs/btrfs/messages.c:259
Code: df e8 9c 03 2d f7 e9 50 fb ff ff e8 22 86 01 00 66 90 66 0f 1f 00 89 d1 48 89 f2 48 89 fe 48 c7 c7 60 55 4c 8b e8 e8 60 ff ff <0f> 0b 66 0f 1f 44 00 00 66 0f 1f 00 53 48 89 fb e8 53 8d d6 f6 48
RSP: 0018:ffffc90004cdfea0 EFLAGS: 00010246
RAX: 0000000000000097 RBX: 00000000fffffff2 RCX: bf18fff7d3f01a00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff816fd91c R09: fffff5200099bf8d
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000003 R14: ffff888075670680 R15: 1ffff1100eace41a
FS:  00007fac955de700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000002b02a000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btrfs_exclop_balance fs/btrfs/ioctl.c:456 [inline]
 btrfs_ioctl_add_dev+0x347/0x480 fs/btrfs/ioctl.c:2660
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fac9ca535d9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 71 15 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fac955de2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fac9cadd7b0 RCX: 00007fac9ca535d9
RDX: 0000000000000000 RSI: 000000005000940a RDI: 0000000000000004
RBP: 61635f6563617073 R08: 00007fac955de700 R09: 0000000000000000
R10: 00007fac955de700 R11: 0000000000000246 R12: 73736572706d6f63
R13: 61635f65646f6e69 R14: 697265765f666572 R15: 00007fac9cadd7b8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:btrfs_assertfail+0x18/0x20 fs/btrfs/messages.c:259
Code: df e8 9c 03 2d f7 e9 50 fb ff ff e8 22 86 01 00 66 90 66 0f 1f 00 89 d1 48 89 f2 48 89 fe 48 c7 c7 60 55 4c 8b e8 e8 60 ff ff <0f> 0b 66 0f 1f 44 00 00 66 0f 1f 00 53 48 89 fb e8 53 8d d6 f6 48
RSP: 0018:ffffc90004cdfea0 EFLAGS: 00010246
RAX: 0000000000000097 RBX: 00000000fffffff2 RCX: bf18fff7d3f01a00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff816fd91c R09: fffff5200099bf8d
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000003 R14: ffff888075670680 R15: 1ffff1100eace41a
FS:  00007fac955de700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000002b02a000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (22):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci2-upstream-fs 2023/03/03 01:12 upstream 04a357b1f6f0 f8902b57 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] kernel BUG in btrfs_ioctl_add_dev
ci2-upstream-fs 2023/02/20 07:24 upstream c9c3395d5e3d bcdf85f8 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] kernel BUG in btrfs_ioctl_add_dev
ci-upstream-gce-arm64 2023/03/03 05:44 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 596b6b709632 f8902b57 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] kernel BUG in btrfs_ioctl_add_dev
ci2-upstream-fs 2023/03/22 05:21 upstream 2faac9a98f01 8b4eb097 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in btrfs_ioctl_add_dev
ci2-upstream-fs 2023/03/20 18:42 upstream e8d018dd0257 7939252e .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in btrfs_ioctl_add_dev
ci2-upstream-fs 2023/03/20 07:25 upstream e8d018dd0257 7939252e .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in btrfs_ioctl_add_dev
ci2-upstream-fs 2023/03/17 22:27 upstream 38e04b3e4240 7939252e .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in btrfs_ioctl_add_dev
ci2-upstream-fs 2023/03/17 00:23 upstream 0ddc84d2dd43 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in btrfs_ioctl_add_dev
ci2-upstream-fs 2023/03/14 20:44 upstream 4979bf866825 0d5c4377 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in btrfs_ioctl_add_dev
ci2-upstream-fs 2023/03/13 20:06 upstream eeac8ede1755 026e2200 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in btrfs_ioctl_add_dev
ci2-upstream-fs 2023/03/13 16:48 upstream eeac8ede1755 026e2200 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in btrfs_ioctl_add_dev
ci2-upstream-fs 2023/03/12 23:24 upstream 134231664868 5205ef30 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in btrfs_ioctl_add_dev
ci2-upstream-fs 2023/03/03 04:49 upstream 04a357b1f6f0 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in btrfs_ioctl_add_dev
ci2-upstream-fs 2023/03/02 04:02 upstream ee3f96b16468 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in btrfs_ioctl_add_dev
ci2-upstream-fs 2023/02/27 02:43 upstream f3a2439f20d9 ee50e71c .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in btrfs_ioctl_add_dev
ci2-upstream-fs 2023/02/26 07:00 upstream 489fa31ea873 ee50e71c .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in btrfs_ioctl_add_dev
ci2-upstream-fs 2023/02/20 06:22 upstream c9c3395d5e3d bcdf85f8 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in btrfs_ioctl_add_dev
ci2-upstream-fs 2023/02/20 00:37 upstream 925cf0457d7e bcdf85f8 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in btrfs_ioctl_add_dev
ci2-upstream-fs 2023/02/18 20:27 upstream 38f8ccde04a3 d02e9a70 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in btrfs_ioctl_add_dev
ci-qemu-upstream-386 2023/03/20 08:46 upstream e8d018dd0257 7939252e .config console log report info kernel BUG in btrfs_ioctl_add_dev
ci-upstream-gce-arm64 2023/03/21 07:08 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 7939252e .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in btrfs_ioctl_add_dev
ci-upstream-gce-arm64 2023/03/02 09:34 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 2ebd1fbb946d f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in btrfs_ioctl_add_dev
* Struck through repros no longer work on HEAD.