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| author |   Filipe Manana <fdmanana@suse.com> | 2025-04-09 16:17:16 +0100 |
|---|---|---|
| committer |   David Sterba <dsterba@suse.com> | 2025-05-15 14:30:50 +0200 |
| commit | 2187540b6f4d92b4bf7622244dc2cbfa61ff1855 (patch) | |
| tree | 39bc33a2d58d7a62f7adbc66c9ae23cff27100ab /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | btrfs: remove duplicate error check at btrfs_clear_extent_bit_changeset() (diff) | |
| download | linux-rng-2187540b6f4d92b4bf7622244dc2cbfa61ff1855.tar.xz linux-rng-2187540b6f4d92b4bf7622244dc2cbfa61ff1855.zip | |
btrfs: exit after state split error at btrfs_clear_extent_bit_changeset()
If split_state() returned an error we call extent_io_tree_panic() which
will trigger a BUG() call. However if CONFIG_BUG is disabled, which is an
uncommon and exotic scenario, then we fallthrough and hit a use after free
when calling clear_state_bit() since the extent state record which the
local variable 'prealloc' points to was freed by split_state().
So jump to the label 'out' after calling extent_io_tree_panic() and set
the 'prealloc' pointer to NULL since split_state() has already freed it
when it hit an error.
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions