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linux/fs/btrfs/tests
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Zhang Xiaoxu 9b2f20344d btrfs: selftests: fix wrong error check in btrfs_free_dummy_root() 
The btrfs_alloc_dummy_root() uses ERR_PTR as the error return value
rather than NULL, if error happened, there will be a NULL pointer
dereference:

  BUG: KASAN: null-ptr-deref in btrfs_free_dummy_root+0x21/0x50 [btrfs]
  Read of size 8 at addr 000000000000002c by task insmod/258926

  CPU: 2 PID: 258926 Comm: insmod Tainted: G        W          6.1.0-rc2+ #5
  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33 04/01/2014
  Call Trace:
   <TASK>
   dump_stack_lvl+0x34/0x44
   kasan_report+0xb7/0x140
   kasan_check_range+0x145/0x1a0
   btrfs_free_dummy_root+0x21/0x50 [btrfs]
   btrfs_test_free_space_cache+0x1a8c/0x1add [btrfs]
   btrfs_run_sanity_tests+0x65/0x80 [btrfs]
   init_btrfs_fs+0xec/0x154 [btrfs]
   do_one_initcall+0x87/0x2a0
   do_init_module+0xdf/0x320
   load_module+0x3006/0x3390
   __do_sys_finit_module+0x113/0x1b0
   do_syscall_64+0x35/0x80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0

Fixes: aaedb55bc0 ("Btrfs: add tests for btrfs_get_extent")
CC: stable@vger.kernel.org # 4.9+
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Zhang Xiaoxu <zhangxiaoxu5@huawei.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2022-11-07 14:30:50 +01:00
..
btrfs-tests.c btrfs: selftests: fix wrong error check in btrfs_free_dummy_root() 2022-11-07 14:30:50 +01:00
btrfs-tests.h btrfs: selftests: Add support for dummy devices 2020-01-23 17:24:34 +01:00
extent-buffer-tests.c btrfs: clean up chained assignments 2022-07-25 17:45:39 +02:00
extent-io-tests.c btrfs: stop tracking failed reads in the I/O tree 2022-09-26 12:28:05 +02:00
extent-map-tests.c btrfs: assert we have a write lock when removing and replacing extent maps 2022-03-14 13:13:50 +01:00
free-space-tests.c btrfs: remove use btrfs_remove_free_space_cache instead of variant 2022-09-26 12:27:58 +02:00
free-space-tree-tests.c btrfs: track the csum, extent, and free space trees in a rb tree 2022-01-03 15:09:50 +01:00
inode-tests.c btrfs: move btrfs_drop_extent_cache() to extent_map.c 2022-09-29 17:08:30 +02:00
qgroup-tests.c btrfs: remove pointless and double ulist frees in error paths of qgroup tests 2022-11-02 17:44:30 +01:00