From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 55081] New: BUG while unlinking inode with an xattr
Date: Mon, 11 Mar 2013 18:47:37 +0000 (UTC)
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https://bugzilla.kernel.org/show_bug.cgi?id=55081
Summary: BUG while unlinking inode with an xattr
Product: File System
Version: 2.5
Kernel Version: 3.9-rc2
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: ext2
AssignedTo: fs_ext2@kernel-bugs.osdl.org
ReportedBy: tyhicks@canonical.com
Regression: Yes
While running the eCryptfs regression test on 3.9-rc2, I hit a new BUG() when
eCryptf was mounted on top of ext2. I then determined that it was an
ext2-specific bug (doesn't happen on ext3, ext4, or other filesystems) and that
it happens without eCryptfs. So, I removed eCryptfs from the picture and
then distilled the test case down into a few commands.
Mount entry in /proc/mounts:
/dev/loop0 /tmp/ext2 ext2 rw,relatime,errors=continue,user_xattr,acl 0 0
Steps to reproduce:
$ cd /tmp/ext2
$ mkdir foo
$ setfacl -dm m:rwx foo
$ rm -rf foo
Note: I've also verified that the BUG is hit with a regular file and a user
xattr:
$ cd /tmp/ext2
$ touch foo
$ setfattr -n user.test -v test foo
$ rm foo
Relevant log entries (for the mkdir -> setfacl -> rm -rf reproducer):
------------[ cut here ]------------
kernel BUG at /var/scm/kernel/linux/fs/inode.c:570!
invalid opcode: 0000 [#1] PREEMPT SMP
Modules linked in: ext2 fuse dm_crypt psmouse virtio_balloon nfsd nfs_acl
auth_rpcgss nfs fscache lockd sunrpc btrfs raid6_pq lzo_compress xor
zlib_deflate libcrc32c virtio_blk virtio_net virtio_pci virtio_ring virtio
CPU 0
Pid: 2195, comm: rm Not tainted 3.9.0-rc2 #52 Bochs Bochs
RIP: 0010:[] [] evict+0x190/0x1a0
RSP: 0018:ffff880073a1bdf8 EFLAGS: 00010202
RAX: ffff88007ff8dd38 RBX: ffff88007a237698 RCX: 0000000000000034
RDX: 0000000000000003 RSI: ffff88007a237768 RDI: ffff88007ff8dd00
RBP: ffff880073a1be10 R08: d018000000000000 R09: 007a2377680c0000
R10: ff67dca720d1da03 R11: 0000000000000001 R12: ffff88007a237720
R13: ffffffffa02788c0 R14: ffffffffa02788c0 R15: ffff88007d345d60
FS: 00007f6e29440700(0000) GS:ffff88007fc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000878588 CR3: 00000000341ae000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process rm (pid: 2195, threadinfo ffff880073a1a000, task ffff880079b80000)
Stack:
ffff88007a237698 ffff88007a237720 ffff8800779537b0 ffff880073a1be40
ffffffff81184945 ffff88007a7be880 ffff88007a237698 ffff88007a261f80
ffff88007a7be8e0 ffff880073a1be68 ffffffff811804f8 ffff88007a7be880
Call Trace:
[] iput+0x105/0x1a0
[] d_kill+0xd8/0x120
[] dput+0xe2/0x1d0
[] __fput+0x166/0x2f0
[] ____fput+0xe/0x10
[] task_work_run+0xb4/0xf0
[] do_notify_resume+0x75/0x80
[] int_signal+0x12/0x17
Code: 70 03 00 00 00 0f 84 4e ff ff ff 48 89 df e8 28 9f fe ff e9 41 ff ff ff
0f 1f 00 48 8d bb e0 01 00 00 31 f6 e8 62 87 f9 ff eb 92 <0f> 0b 0f 0b 0f 0b 66
2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00
RIP [] evict+0x190/0x1a0
RSP
---[ end trace 2787ce3bd787beee ]---
BUG: sleeping function called from invalid context at
/var/scm/kernel/linux/kernel/rwsem.c:20
in_atomic(): 1, irqs_disabled(): 0, pid: 2195, name: rm
INFO: lockdep is turned off.
Pid: 2195, comm: rm Tainted: G D 3.9.0-rc2 #52
Call Trace:
[] __might_sleep+0xff/0x130
[] down_read+0x24/0x5c
[] ? __validate_process_creds+0x5b/0xf0
[] exit_signals+0x24/0x130
[] do_exit+0xbc/0xaa0
[] ? kmsg_dump+0x101/0x110
[] ? kmsg_dump+0x25/0x110
[] oops_end+0xab/0xf0
[] die+0x58/0x90
[] do_trap+0x6b/0x170
[] do_invalid_op+0x95/0xb0
[] ? evict+0x190/0x1a0
[] ? trace_hardirqs_off_thunk+0x3a/0x3c
[] ? restore_args+0x30/0x30
[] invalid_op+0x1b/0x20
[] ? evict+0x190/0x1a0
[] ? evict+0xf0/0x1a0
[] iput+0x105/0x1a0
[] d_kill+0xd8/0x120
[] dput+0xe2/0x1d0
[] __fput+0x166/0x2f0
[] ____fput+0xe/0x10
[] task_work_run+0xb4/0xf0
[] do_notify_resume+0x75/0x80
[] int_signal+0x12/0x17
note: rm[2195] exited with preempt_count 1
BUG: scheduling while atomic: rm/2195/0x10000002
INFO: lockdep is turned off.
Modules linked in: ext2 fuse dm_crypt psmouse virtio_balloon nfsd nfs_acl
auth_rpcgss nfs fscache lockd sunrpc btrfs raid6_pq lzo_compress xor
zlib_deflate libcrc32c virtio_blk virtio_net virtio_pci virtio_ring virtio
Pid: 2195, comm: rm Tainted: G D 3.9.0-rc2 #52
Call Trace:
[] __schedule_bug+0x66/0x75
[] __schedule+0x89f/0x960
[] ? number.isra.1+0x322/0x360
[] ? alloc_pages_current+0xb8/0x180
[] __cond_resched+0x18/0x30
[] _cond_resched+0x2f/0x40
[] unmap_single_vma+0x3f2/0x7f0
[] unmap_vmas+0x49/0x60
[] exit_mmap+0x88/0x150
[] mmput+0x65/0xe0
[] do_exit+0x294/0xaa0
[] ? kmsg_dump+0x101/0x110
[] ? kmsg_dump+0x25/0x110
[] oops_end+0xab/0xf0
[] die+0x58/0x90
[] do_trap+0x6b/0x170
[] do_invalid_op+0x95/0xb0
[] ? evict+0x190/0x1a0
[] ? trace_hardirqs_off_thunk+0x3a/0x3c
[] ? restore_args+0x30/0x30
[] invalid_op+0x1b/0x20
[] ? evict+0x190/0x1a0
[] ? evict+0xf0/0x1a0
[] iput+0x105/0x1a0
[] d_kill+0xd8/0x120
[] dput+0xe2/0x1d0
[] __fput+0x166/0x2f0
[] ____fput+0xe/0x10
[] task_work_run+0xb4/0xf0
[] do_notify_resume+0x75/0x80
[] int_signal+0x12/0x17
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