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From:   Anatoly Trosinenko <anatoly.trosinenko@gmail.com>
Date:   Sun, 28 Oct 2018 20:50:46 +0300
Message-ID: <CAE5jQCc3hrq6E-Ff1oiYUOSDA08PMrqnu80XQtaD5adcUQvV8w@mail.gmail.com>
Subject: XFS: Hang and dmesg flood on mounting invalid FS image
To:     "Darrick J. Wong" <darrick.wong@oracle.com>
Cc:     linux-xfs@vger.kernel.org, linux-kernel@vger.kernel.org
Content-Type: multipart/mixed; boundary="00000000000043aab105794d98d7"
Sender: linux-kernel-owner@vger.kernel.org
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--00000000000043aab105794d98d7
Content-Type: text/plain; charset="UTF-8"

Hello,

When mounting a broken XFS image, the kernel hangs and floods dmesg
with stack traces.

How to reproduce with kvm-xfstests:
1) Checkout v4.19, copy x86_64-config-4.14 to .config, `make
olddefconfig` and compile
2) Unpack the attached image (128 Mb uncompressed) to /tmp/kvm-xfstests-$USER
3) Inside the `kvm-xfstests shell`:

root@kvm-xfstests:~# mount /vtmp
root@kvm-xfstests:~# mount /vtmp/xfs.img /mnt
[   39.280840] XFS (loop0): Mounting V5 Filesystem
[   39.303657] XFS (loop0): Internal error xlog_valid_rec_header(2) at
line 5283 of file fs/xfs/xfs_log_recover.c.  Caller
xlog_do_recovery_pass+0x2bd/0x5d0
[   39.304886] CPU: 0 PID: 373 Comm: mount Not tainted 4.19.0-xfstests #1
[   39.305491] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS 1.11.1-1ubuntu1 04/01/2014
[   39.306247] Call Trace:
[   39.306464]  dump_stack+0x85/0xc0
[   39.306751]  xlog_valid_rec_header.isra.6+0xd5/0xe0
[   39.307250]  xlog_do_recovery_pass+0x2bd/0x5d0
[   39.307624]  ? xlog_bread_noalign+0x98/0x110
[   39.307983]  ? xlog_bread_noalign+0x98/0x110
[   39.308344]  xlog_verify_head+0xab/0x190
[   39.308675]  xlog_find_tail+0x208/0x350
[   39.308999]  xlog_recover+0x2b/0x160
[   39.309307]  xfs_log_mount+0x280/0x2a0
[   39.309625]  xfs_mountfs+0x42f/0x890
[   39.309928]  ? xfs_mru_cache_create+0x18b/0x1f0
[   39.310309]  xfs_fs_fill_super+0x4f8/0x6d0
[   39.310655]  ? xfs_test_remount_options+0x60/0x60
[   39.311050]  mount_bdev+0x17f/0x1b0
[   39.311347]  mount_fs+0x3b/0x170
[   39.311624]  ? __init_waitqueue_head+0x36/0x50
[   39.311999]  vfs_kern_mount.part.16+0x54/0x160
[   39.312374]  do_mount+0x20e/0xdf0
[   39.312657]  ? memdup_user+0x3e/0x70
[   39.312961]  __ia32_compat_sys_mount+0xa3/0x140
[   39.313346]  do_fast_syscall_32+0x9d/0x2f0
[   39.313694]  entry_SYSENTER_compat+0x84/0x96
[   39.314126] XFS (loop0): Torn write (CRC failure) detected at log
block 0xaaf. Truncating head block from 0xab7.
[   39.316912] XFS (loop0): Internal error xlog_valid_rec_header(2) at
line 5283 of file fs/xfs/xfs_log_recover.c.  Caller
xlog_do_recovery_pass+0x2bd/0x5d0
[   39.318057] CPU: 0 PID: 373 Comm: mount Not tainted 4.19.0-xfstests #1
[   39.318601] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS 1.11.1-1ubuntu1 04/01/2014
[   39.319339] Call Trace:
[   39.319552]  dump_stack+0x85/0xc0
[   39.319834]  xlog_valid_rec_header.isra.6+0xd5/0xe0
[   39.320244]  xlog_do_recovery_pass+0x2bd/0x5d0
[   39.320618]  ? xlog_bread_noalign+0x98/0x110
[   39.320979]  ? xlog_bread_noalign+0x98/0x110
[   39.321344]  xlog_verify_tail+0x144/0x1e0
[   39.321686]  xlog_verify_head+0xd4/0x190
[   39.322021]  xlog_find_tail+0x208/0x350
[   39.322348]  xlog_recover+0x2b/0x160
[   39.322654]  xfs_log_mount+0x280/0x2a0
[   39.322974]  xfs_mountfs+0x42f/0x890
[   39.323280]  ? xfs_mru_cache_create+0x18b/0x1f0
[   39.323664]  xfs_fs_fill_super+0x4f8/0x6d0
[   39.324013]  ? xfs_test_remount_options+0x60/0x60
[   39.324411]  mount_bdev+0x17f/0x1b0
[   39.324710]  mount_fs+0x3b/0x170
[   39.324988]  ? __init_waitqueue_head+0x36/0x50
[   39.325369]  vfs_kern_mount.part.16+0x54/0x160
[   39.325747]  do_mount+0x20e/0xdf0
[   39.326063]  ? memdup_user+0x3e/0x70
[   39.326369]  __ia32_compat_sys_mount+0xa3/0x140
[   39.326753]  do_fast_syscall_32+0x9d/0x2f0
[   39.327101]  entry_SYSENTER_compat+0x84/0x96
[   39.328873] XFS (loop0): Internal error xlog_valid_rec_header(2) at
line 5283 of file fs/xfs/xfs_log_recover.c.  Caller
xlog_do_recovery_pass+0x2bd/0x5d0
[   39.330024] CPU: 0 PID: 373 Comm: mount Not tainted 4.19.0-xfstests #1
[   39.330574] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS 1.11.1-1ubuntu1 04/01/2014
[   39.331349] Call Trace:
[   39.331565]  dump_stack+0x85/0xc0
[   39.331850]  xlog_valid_rec_header.isra.6+0xd5/0xe0
[   39.332264]  xlog_do_recovery_pass+0x2bd/0x5d0
[   39.332642]  ? xlog_bread_noalign+0x98/0x110
[   39.333005]  ? xlog_bread_noalign+0x98/0x110
[   39.333371]  xlog_verify_tail+0x144/0x1e0
[   39.333713]  xlog_verify_head+0xd4/0x190
[   39.334048]  xlog_find_tail+0x208/0x350
[   39.334376]  xlog_recover+0x2b/0x160
[   39.334682]  xfs_log_mount+0x280/0x2a0
[   39.335003]  xfs_mountfs+0x42f/0x890
[   39.335309]  ? xfs_mru_cache_create+0x18b/0x1f0
[   39.335693]  xfs_fs_fill_super+0x4f8/0x6d0
[   39.336041]  ? xfs_test_remount_options+0x60/0x60
[   39.336439]  mount_bdev+0x17f/0x1b0
[   39.336739]  mount_fs+0x3b/0x170
[   39.337016]  ? __init_waitqueue_head+0x36/0x50
[   39.337396]  vfs_kern_mount.part.16+0x54/0x160
[   39.337774]  do_mount+0x20e/0xdf0
[   39.338059]  ? memdup_user+0x3e/0x70
[   39.338365]  __ia32_compat_sys_mount+0xa3/0x140
[   39.338749]  do_fast_syscall_32+0x9d/0x2f0
[   39.339098]  entry_SYSENTER_compat+0x84/0x96
[   39.340891] XFS (loop0): Internal error xlog_valid_rec_header(2) at
line 5283 of file fs/xfs/xfs_log_recover.c.  Caller
xlog_do_recovery_pass+0x2bd/0x5d0
[   39.342084] CPU: 0 PID: 373 Comm: mount Not tainted 4.19.0-xfstests #1
[   39.342636] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS 1.11.1-1ubuntu1 04/01/2014
[   39.343385] Call Trace:
[   39.343601]  dump_stack+0x85/0xc0
[   39.343890]  xlog_valid_rec_header.isra.6+0xd5/0xe0
[   39.344309]  xlog_do_recovery_pass+0x2bd/0x5d0
[   39.344692]  ? xlog_bread_noalign+0x98/0x110
[   39.345092]  ? xlog_bread_noalign+0x98/0x110
[   39.345709]  xlog_verify_tail+0x144/0x1e0
[   39.346059]  xlog_verify_head+0xd4/0x190
[   39.346392]  xlog_find_tail+0x208/0x350
[   39.346718]  xlog_recover+0x2b/0x160
[   39.347025]  xfs_log_mount+0x280/0x2a0
[   39.347345]  xfs_mountfs+0x42f/0x890
[   39.347650]  ? xfs_mru_cache_create+0x18b/0x1f0
[   39.348032]  xfs_fs_fill_super+0x4f8/0x6d0
[   39.348380]  ? xfs_test_remount_options+0x60/0x60
[   39.348778]  mount_bdev+0x17f/0x1b0
[   39.349077]  mount_fs+0x3b/0x170
[   39.349366]  ? __init_waitqueue_head+0x36/0x50
[   39.349753]  vfs_kern_mount.part.16+0x54/0x160
[   39.350138]  do_mount+0x20e/0xdf0
[   39.350425]  ? memdup_user+0x3e/0x70
[   39.350731]  __ia32_compat_sys_mount+0xa3/0x140
[   39.351115]  do_fast_syscall_32+0x9d/0x2f0
[   39.351464]  entry_SYSENTER_compat+0x84/0x96
[   39.353323] XFS (loop0): Internal error xlog_valid_rec_header(2) at
line 5283 of file fs/xfs/xfs_log_recover.c.  Caller
xlog_do_recovery_pass+0x2bd/0x5d0
// ... and so on ...

Best regards
Anatoly

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