This is a note to let you know that I've just added the patch titled
f2fs: fix null pointer panic in tracepoint in __replace_atomic_write_block
to the 6.3-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
f2fs-fix-null-pointer-panic-in-tracepoint-in-__replace_atomic_write_block.patch
and it can be found in the queue-6.3 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From da6ea0b050fa720302b56fbb59307e7c7531a342 Mon Sep 17 00:00:00 2001
From: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Date: Mon, 3 Apr 2023 09:37:24 -0700
Subject: f2fs: fix null pointer panic in tracepoint in __replace_atomic_write_block
From: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
commit da6ea0b050fa720302b56fbb59307e7c7531a342 upstream.
We got a kernel panic if old_addr is NULL.
https://bugzilla.kernel.org/show_bug.cgi?id=217266
BUG: kernel NULL pointer dereference, address: 0000000000000000
Call Trace:
<TASK>
f2fs_commit_atomic_write+0x619/0x990 [f2fs a1b985b80f5babd6f3ea778384908880812bfa43]
__f2fs_ioctl+0xd8e/0x4080 [f2fs a1b985b80f5babd6f3ea778384908880812bfa43]
? vfs_write+0x2ae/0x3f0
? vfs_write+0x2ae/0x3f0
__x64_sys_ioctl+0x91/0xd0
do_syscall_64+0x5c/0x90
entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7f69095fe53f
Fixes: 2f3a9ae990a7 ("f2fs: introduce trace_f2fs_replace_atomic_write_block")
Cc: <stable@xxxxxxxxxxxxxxx>
Reviewed-by: Chao Yu <chao@xxxxxxxxxx>
Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/f2fs/segment.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -263,7 +263,7 @@ retry:
f2fs_put_dnode(&dn);
trace_f2fs_replace_atomic_write_block(inode, F2FS_I(inode)->cow_inode,
- index, *old_addr, new_addr, recover);
+ index, old_addr ? *old_addr : 0, new_addr, recover);
return 0;
}
Patches currently in stable-queue which might be from jaegeuk@xxxxxxxxxx are
queue-6.3/f2fs-factor-out-discard_cmd-usage-from-general-rb_tree-use.patch
queue-6.3/f2fs-factor-out-victim_entry-usage-from-general-rb_tree-use.patch
queue-6.3/f2fs-fix-potential-corruption-when-moving-a-directory.patch
queue-6.3/f2fs-remove-entire-rb_entry-sharing.patch
queue-6.3/f2fs-fix-null-pointer-panic-in-tracepoint-in-__replace_atomic_write_block.patch
