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fs/ntfs3: Fix general protection fault in run_is_mapped_full

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commit a33fb016e49e37aafab18dc3c8314d6399cb4727 upstream.

Fixed deleating of a non-resident attribute in ntfs_create_inode()
rollback.

Reported-by: syzbot+9af29acd8f27fbce94bc@syzkaller.appspotmail.com
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Bin Lan <bin.lan.cn@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Konstantin Komarov
2024-08-30 13:50:18 +03:00
committed by Greg Kroah-Hartman
parent ba0b09a2f3
commit 509c1c6b49
1 changed files with 9 additions and 0 deletions
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9
fs/ntfs3/inode.c
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@@ -1646,6 +1646,15 @@ out7:
le16_to_cpu(new_de->key_size), sbi);
/* ni_unlock(dir_ni); will be called later. */
out6:
attr = ni_find_attr(ni, NULL, NULL, ATTR_EA, NULL, 0, NULL, NULL);
if (attr && attr->non_res) {
/* Delete ATTR_EA, if non-resident. */
struct runs_tree run;
run_init(&run);
attr_set_size(ni, ATTR_EA, NULL, 0, &run, 0, NULL, false, NULL);
run_close(&run);
}
if (rp_inserted)
ntfs_remove_reparse(sbi, IO_REPARSE_TAG_SYMLINK, &new_de->ref);