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| author |   Filipe Manana <fdmanana@suse.com> | 2025-04-10 17:01:59 +0100 |
|---|---|---|
| committer |   David Sterba <dsterba@suse.com> | 2025-05-15 14:30:51 +0200 |
| commit | 2a72dd999610f9a8e2ddc0eaaf054cd66e45cde7 (patch) | |
| tree | 7a7abb47c2126ec0818438d5628e365694ef1329 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | btrfs: remove duplicate error check at btrfs_convert_extent_bit() (diff) | |
| download | linux-rng-2a72dd999610f9a8e2ddc0eaaf054cd66e45cde7.tar.xz linux-rng-2a72dd999610f9a8e2ddc0eaaf054cd66e45cde7.zip | |
btrfs: exit after state split error at btrfs_convert_extent_bit()
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 set_state_bits() 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