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bcachefs: Fix locking in bch2_ioc_setlabel()

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Fixes: 7a254053a5 ("bcachefs: support FS_IOC_SETFSLABEL")
Reported-by: syzbot+7e9efdfec27fbde0141d@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2024-08-20 19:31:20 -04:00
parent 5dbfc4ef72
commit 6575b8c987
1 changed files with 1 additions and 2 deletions
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3
fs/bcachefs/fs-ioctl.c
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@ -328,9 +328,8 @@ static int bch2_ioc_setlabel(struct bch_fs *c,
mutex_lock(&c->sb_lock); mutex_lock(&c->sb_lock);
strscpy(c->disk_sb.sb->label, label, BCH_SB_LABEL_SIZE); strscpy(c->disk_sb.sb->label, label, BCH_SB_LABEL_SIZE);
mutex_unlock(&c->sb_lock);
ret = bch2_write_super(c); ret = bch2_write_super(c);
mutex_unlock(&c->sb_lock);
mnt_drop_write_file(file); mnt_drop_write_file(file);
return ret; return ret;