lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Mon, 23 May 2022 22:16:58 +0800 From: Baokun Li <libaokun1@...wei.com> To: <linux-ext4@...r.kernel.org> CC: <tytso@....edu>, <adilger.kernel@...ger.ca>, <jack@...e.cz>, <ritesh.list@...il.com>, <lczerner@...hat.com>, <linux-kernel@...r.kernel.org>, <yi.zhang@...wei.com>, <yebin10@...wei.com>, <yukuai3@...wei.com>, <libaokun1@...wei.com> Subject: [PATCH v2 2/2] ext4: correct the judgment of BUG in ext4_mb_normalize_request When either of the "start + size <= ac->ac_o_ex.fe_logical" or "start > ac->ac_o_ex.fe_logical" conditions is met, it indicates that the fe_logical is not in the allocated range. In this case, it should be bug_ON. Fixes: c9de560ded61 ("ext4: Add multi block allocator for ext4") Signed-off-by: Baokun Li <libaokun1@...wei.com> --- V1->V2: Change Fixes from dfe076c106f6 to c9de560ded61. fs/ext4/mballoc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index 6aafc242fe23..61ced468f178 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -4185,7 +4185,7 @@ ext4_mb_normalize_request(struct ext4_allocation_context *ac, } rcu_read_unlock(); - if (start + size <= ac->ac_o_ex.fe_logical && + if (start + size <= ac->ac_o_ex.fe_logical || start > ac->ac_o_ex.fe_logical) { ext4_msg(ac->ac_sb, KERN_ERR, "start %lu, size %lu, fe_logical %lu", -- 2.31.1
Powered by blists - more mailing lists