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| author | yangerkun <yangerkun@huawei.com> | 2021-09-03 14:27:48 +0800 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2021-11-04 10:33:24 -0400 |
| commit | 1811bc401aa58c7bdb0df3205aa6613b49d32127 (patch) | |
| tree | 57a8b2d29d4637e2572909c9dc98bbb5cf63392d /fs/ext4/page-io.c | |
| parent | 4268496e48dc681cfa53b92357314b5d7221e625 (diff) | |
| download | linux-1811bc401aa58c7bdb0df3205aa6613b49d32127.tar.gz linux-1811bc401aa58c7bdb0df3205aa6613b49d32127.tar.bz2 linux-1811bc401aa58c7bdb0df3205aa6613b49d32127.zip | |
ext4: refresh the ext4_ext_path struct after dropping i_data_sem.
After we drop i_data sem, we need to reload the ext4_ext_path
structure since the extent tree can change once i_data_sem is
released.
This addresses the BUG:
[52117.465187] ------------[ cut here ]------------
[52117.465686] kernel BUG at fs/ext4/extents.c:1756!
...
[52117.478306] Call Trace:
[52117.478565] ext4_ext_shift_extents+0x3ee/0x710
[52117.479020] ext4_fallocate+0x139c/0x1b40
[52117.479405] ? __do_sys_newfstat+0x6b/0x80
[52117.479805] vfs_fallocate+0x151/0x4b0
[52117.480177] ksys_fallocate+0x4a/0xa0
[52117.480533] __x64_sys_fallocate+0x22/0x30
[52117.480930] do_syscall_64+0x35/0x80
[52117.481277] entry_SYSCALL_64_after_hwframe+0x44/0xae
[52117.481769] RIP: 0033:0x7fa062f855ca
Cc: stable@kernel.org
Link: https://lore.kernel.org/r/20210903062748.4118886-4-yangerkun@huawei.com
Signed-off-by: yangerkun <yangerkun@huawei.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/page-io.c')
0 files changed, 0 insertions, 0 deletions