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linux-stable/fs/nilfs2
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Ryusuke Konishi 192e9f9078 nilfs2: prevent kernel bug at submit_bh_wbc() 
[ Upstream commit 269cdf353b ]

Fix a bug where nilfs_get_block() returns a successful status when
searching and inserting the specified block both fail inconsistently.  If
this inconsistent behavior is not due to a previously fixed bug, then an
unexpected race is occurring, so return a temporary error -EAGAIN instead.

This prevents callers such as __block_write_begin_int() from requesting a
read into a buffer that is not mapped, which would cause the BUG_ON check
for the BH_Mapped flag in submit_bh_wbc() to fail.

Link: https://lkml.kernel.org/r/20240313105827.5296-3-konishi.ryusuke@gmail.com
Fixes: 1f5abe7e7d ("nilfs2: replace BUG_ON and BUG calls triggerable from ioctl")
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2024-04-03 15:19:37 +02:00
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Kconfig
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Makefile
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alloc.c nilfs2: fix WARNING in mark_buffer_dirty due to discarded buffer reuse 2023-09-06 21:27:03 +01:00
alloc.h nilfs2: remove filenames from file comments 2021-11-09 10:02:52 -08:00
bmap.c nilfs2: fix infinite loop in nilfs_mdt_get_block() 2023-05-11 23:03:39 +09:00
bmap.h nilfs2: remove filenames from file comments 2021-11-09 10:02:52 -08:00
btnode.c nilfs2: fix incomplete buffer cleanup in nilfs_btnode_abort_change_key() 2023-06-21 16:00:54 +02:00
btnode.h fs/nilfs2: Use the enum req_op and blk_opf_t types 2022-07-14 12:14:33 -06:00
btree.c nilfs2: fix failure to detect DAT corruption in btree and direct mappings 2024-04-03 15:19:37 +02:00
btree.h nilfs2: remove filenames from file comments 2021-11-09 10:02:52 -08:00
cpfile.c nilfs2: remove filenames from file comments 2021-11-09 10:02:52 -08:00
cpfile.h nilfs2: remove filenames from file comments 2021-11-09 10:02:52 -08:00
dat.c nilfs2: replace WARN_ONs for invalid DAT metadata block requests 2024-02-23 09:12:52 +01:00
dat.h nilfs2: remove filenames from file comments 2021-11-09 10:02:52 -08:00
dir.c nilfs2: Remove check for PageError 2022-06-29 08:51:07 -04:00
direct.c nilfs2: fix failure to detect DAT corruption in btree and direct mappings 2024-04-03 15:19:37 +02:00
direct.h nilfs2: remove filenames from file comments 2021-11-09 10:02:52 -08:00
export.h
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file.c nilfs2: fix hang in nilfs_lookup_dirty_data_buffers() 2024-02-23 09:12:44 +01:00
gcinode.c nilfs2: fix potential use after free in nilfs_gccache_submit_read_data() 2023-10-06 14:57:01 +02:00
ifile.c nilfs2: remove filenames from file comments 2021-11-09 10:02:52 -08:00
ifile.h nilfs2: remove filenames from file comments 2021-11-09 10:02:52 -08:00
inode.c nilfs2: prevent kernel bug at submit_bh_wbc() 2024-04-03 15:19:37 +02:00
ioctl.c nilfs2: fix kernel-infoleak in nilfs_ioctl_wrap_copy() 2023-03-30 12:49:27 +02:00
mdt.c fs/nilfs2: Use the enum req_op and blk_opf_t types 2022-07-14 12:14:33 -06:00
mdt.h nilfs2: fix lockdep warnings during disk space reclamation 2022-04-01 11:46:09 -07:00
namei.c nilfs2: remove filenames from file comments 2021-11-09 10:02:52 -08:00
nilfs.h nilfs2: fix incorrect masking of permission flags for symlinks 2022-07-03 15:42:33 -07:00
page.c nilfs2: prevent general protection fault in nilfs_clear_dirty_page() 2023-06-28 11:12:27 +02:00
page.h nilfs2: get rid of nilfs_mapping_init() 2022-04-01 11:46:09 -07:00
recovery.c nilfs2: fix data corruption in dsync block recovery for small block sizes 2024-02-23 09:12:44 +01:00
segbuf.c nilfs2: fix buffer corruption due to concurrent device reads 2023-06-28 11:12:22 +02:00
segbuf.h nilfs2: remove filenames from file comments 2021-11-09 10:02:52 -08:00
segment.c nilfs2: fix potential bug in end_buffer_async_write 2024-02-23 09:12:52 +01:00
segment.h nilfs2: remove filenames from file comments 2021-11-09 10:02:52 -08:00
sufile.c nilfs2: prevent WARNING in nilfs_sufile_set_segment_usage() 2023-12-13 18:39:19 +01:00
sufile.h nilfs2: remove filenames from file comments 2021-11-09 10:02:52 -08:00
super.c nilfs2: fix buffer corruption due to concurrent device reads 2023-06-28 11:12:22 +02:00
sysfs.c nilfs2: use default_groups in kobj_type 2021-12-29 10:53:48 +01:00
sysfs.h nilfs2: remove filenames from file comments 2021-11-09 10:02:52 -08:00
the_nilfs.c nilfs2: fix missing error check for sb_set_blocksize call 2023-12-13 18:39:19 +01:00
the_nilfs.h nilfs2: fix use-after-free of nilfs_root in dirtying inodes via iput 2023-08-16 18:27:22 +02:00