syzbot


kernel BUG in vfs_get_tree

Status: upstream: reported syz repro on 2024/08/21 21:35
Subsystems: bcachefs jfs
[Documentation on labels]
Reported-by: syzbot+c0360e8367d6d8d04a66@syzkaller.appspotmail.com
First crash: 58d, last: 1d10h
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [bcachefs?] [jfs?] kernel BUG in vfs_get_tree 0 (1) 2024/08/21 21:35

Sample crash report:
bcachefs (loop0): shutting down
bcachefs (loop0): shutdown complete
bcachefs: bch2_fs_get_tree() error: EPERM
Filesystem bcachefs get_tree() didn't set fc->root, returned 1
------------[ cut here ]------------
kernel BUG at fs/super.c:1810!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5390 Comm: syz.0.15 Not tainted 6.11.0-rc5-syzkaller-00316-g6cd90e5ea72f #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:vfs_get_tree+0x29f/0x2b0 fs/super.c:1810
Code: 1e 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 64 61 ed ff 48 8b 33 48 c7 c7 20 b0 18 8c 44 89 e2 e8 92 24 a9 09 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 90 90 90 90 90
RSP: 0018:ffffc90002a27d08 EFLAGS: 00010246
RAX: 000000000000003e RBX: ffffffff8ef48c20 RCX: d7482d72cfac2000
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 1ffff110091a7696 R08: ffffffff8174013c R09: 1ffff92000544f40
R10: dffffc0000000000 R11: fffff52000544f41 R12: 0000000000000001
R13: dffffc0000000000 R14: ffff888048d3b498 R15: ffff888048d3b4b0
FS:  00007f526f59b6c0(0000) GS:ffff88801fe00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcd38d34000 CR3: 000000004a1f6000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_new_mount+0x2be/0xb40 fs/namespace.c:3472
 do_mount fs/namespace.c:3812 [inline]
 __do_sys_mount fs/namespace.c:4020 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3997
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f526e77b65a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f526f59ae68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f526f59aef0 RCX: 00007f526e77b65a
RDX: 00000000200058c0 RSI: 0000000020000000 RDI: 00007f526f59aeb0
RBP: 00000000200058c0 R08: 00007f526f59aef0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000000
R13: 00007f526f59aeb0 R14: 0000000000005938 R15: 0000000020000040
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:vfs_get_tree+0x29f/0x2b0 fs/super.c:1810
Code: 1e 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 64 61 ed ff 48 8b 33 48 c7 c7 20 b0 18 8c 44 89 e2 e8 92 24 a9 09 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 90 90 90 90 90
RSP: 0018:ffffc90002a27d08 EFLAGS: 00010246
RAX: 000000000000003e RBX: ffffffff8ef48c20 RCX: d7482d72cfac2000
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 1ffff110091a7696 R08: ffffffff8174013c R09: 1ffff92000544f40
R10: dffffc0000000000 R11: fffff52000544f41 R12: 0000000000000001
R13: dffffc0000000000 R14: ffff888048d3b498 R15: ffff888048d3b4b0
FS:  00007f526f59b6c0(0000) GS:ffff88801fe00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcd39076000 CR3: 000000004a1f6000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (43):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/09/01 11:16 upstream 6cd90e5ea72f 1eda0d14 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 22:08 upstream b311c1b497e5 d504e3fd .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro #1] [mounted in repro #2] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 21:35 upstream b311c1b497e5 d504e3fd .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro #1] [mounted in repro #2] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/09/06 13:07 upstream b831f83e40a2 464ac2ed .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/09/01 17:59 upstream 431c1646e1f8 1eda0d14 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/09/01 15:28 upstream 6cd90e5ea72f 1eda0d14 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/09/01 13:30 upstream 6cd90e5ea72f 1eda0d14 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/09/01 13:27 upstream 6cd90e5ea72f 1eda0d14 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/09/01 13:26 upstream 6cd90e5ea72f 1eda0d14 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/09/01 10:44 upstream 6cd90e5ea72f 1eda0d14 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/22 05:18 upstream 872cf28b8df9 ca02180f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/22 02:45 upstream 872cf28b8df9 ca02180f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 21:52 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 20:30 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 20:02 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 19:16 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 18:39 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 18:34 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 17:45 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 17:33 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 16:23 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 16:22 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 16:20 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 16:16 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 16:13 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 16:10 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 16:07 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 15:49 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 15:20 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 15:19 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 15:17 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 15:17 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 15:16 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 15:14 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 15:11 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 15:11 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 15:07 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 14:37 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 14:19 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 13:31 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/08/21 13:09 upstream b311c1b497e5 d504e3fd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in vfs_get_tree
2024/07/11 22:05 linux-next 523b23f0bee3 c699c2eb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in vfs_get_tree
* Struck through repros no longer work on HEAD.