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| author | Marco Benatto <mbenatto@redhat.com> | 2019-02-01 09:12:20 -0800 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2019-02-11 16:07:00 -0800 |
| commit | d519da41e2b789f2cbd705cd8cec0bb92be4838d (patch) | |
| tree | 7a1c2826db60c4f907ba1f4d5ebe538f1a9acafd | |
| parent | e88db81645d36f945d11bd73ffff31dad148eaf8 (diff) | |
| download | linux-rt-d519da41e2b789f2cbd705cd8cec0bb92be4838d.tar.gz | |
xfs: Introduce XFS_PTAG_VERIFIER_ERROR panic mask
Currently we have a few PTAGs in place allowing us to transform a filesystem
error in a BUG() call. However, we don't have a panic tag for corrupt
metadata, so introduce XFS_PTAG_VERIFIER_ERROR so that the administrator can
use the fs.xfs.panic_mask sysctl knob to convert any error detected by buffer
verifiers into a kernel panic.
Signed-off-by: Marco Benatto <mbenatto@redhat.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
[darrick: light editing of commit message]
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
| -rw-r--r-- | Documentation/filesystems/xfs.txt | 3 | ||||
| -rw-r--r-- | fs/xfs/xfs_error.c | 3 | ||||
| -rw-r--r-- | fs/xfs/xfs_error.h | 1 | ||||
| -rw-r--r-- | fs/xfs/xfs_globals.c | 2 |
4 files changed, 6 insertions, 3 deletions
diff --git a/Documentation/filesystems/xfs.txt b/Documentation/filesystems/xfs.txt index 9ccfd1bc6201..a5cbb5e0e3db 100644 --- a/Documentation/filesystems/xfs.txt +++ b/Documentation/filesystems/xfs.txt @@ -272,7 +272,7 @@ The following sysctls are available for the XFS filesystem: XFS_ERRLEVEL_LOW: 1 XFS_ERRLEVEL_HIGH: 5 - fs.xfs.panic_mask (Min: 0 Default: 0 Max: 255) + fs.xfs.panic_mask (Min: 0 Default: 0 Max: 256) Causes certain error conditions to call BUG(). Value is a bitmask; OR together the tags which represent errors which should cause panics: @@ -285,6 +285,7 @@ The following sysctls are available for the XFS filesystem: XFS_PTAG_SHUTDOWN_IOERROR 0x00000020 XFS_PTAG_SHUTDOWN_LOGERROR 0x00000040 XFS_PTAG_FSBLOCK_ZERO 0x00000080 + XFS_PTAG_VERIFIER_ERROR 0x00000100 This option is intended for debugging only. diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c index 9866f542e77b..57a85410a8c6 100644 --- a/fs/xfs/xfs_error.c +++ b/fs/xfs/xfs_error.c @@ -357,7 +357,8 @@ xfs_buf_verifier_error( fa = failaddr ? failaddr : __return_address; __xfs_buf_ioerror(bp, error, fa); - xfs_alert(mp, "Metadata %s detected at %pS, %s block 0x%llx %s", + xfs_alert_tag(mp, XFS_PTAG_VERIFIER_ERROR, + "Metadata %s detected at %pS, %s block 0x%llx %s", bp->b_error == -EFSBADCRC ? "CRC error" : "corruption", fa, bp->b_ops->name, bp->b_bn, name); diff --git a/fs/xfs/xfs_error.h b/fs/xfs/xfs_error.h index 246d3e989c6c..602aa7d62b66 100644 --- a/fs/xfs/xfs_error.h +++ b/fs/xfs/xfs_error.h @@ -98,5 +98,6 @@ extern int xfs_errortag_clearall(struct xfs_mount *mp); #define XFS_PTAG_SHUTDOWN_IOERROR 0x00000020 #define XFS_PTAG_SHUTDOWN_LOGERROR 0x00000040 #define XFS_PTAG_FSBLOCK_ZERO 0x00000080 +#define XFS_PTAG_VERIFIER_ERROR 0x00000100 #endif /* __XFS_ERROR_H__ */ diff --git a/fs/xfs/xfs_globals.c b/fs/xfs/xfs_globals.c index 5169e84ae382..d0d377384120 100644 --- a/fs/xfs/xfs_globals.c +++ b/fs/xfs/xfs_globals.c @@ -16,7 +16,7 @@ xfs_param_t xfs_params = { /* MIN DFLT MAX */ .sgid_inherit = { 0, 0, 1 }, .symlink_mode = { 0, 0, 1 }, - .panic_mask = { 0, 0, 255 }, + .panic_mask = { 0, 0, 256 }, .error_level = { 0, 3, 11 }, .syncd_timer = { 1*100, 30*100, 7200*100}, .stats_clear = { 0, 0, 1 }, |