From: Andriy Skulysh <c17819@cray.com>
Date: Mon, 1 Mar 2021 21:41:33 +0000 (+0200)
Subject: LU-14552 ptlrpc: NULL pointer dereference in ptlrpc_watchdog_fire
X-Git-Tag: 2.14.52~168
X-Git-Url: https://git.whamcloud.com/?a=commitdiff_plain;h=14a1102268941d851ef5ef793923e39081b81ff4;p=fs%2Flustre-release.git

LU-14552 ptlrpc: NULL pointer dereference in ptlrpc_watchdog_fire

thread->t_task isn't initialized by target_recovery_thread()

Change-Id: Ia38d5ccaab6b9332a1fd60ebe5ed2461f7d5db84
HPE-bug-id: LUS-9748
Fixes: 0496cdf20 ("LU-13608 tgt: abort recovery while reading update llog")
Signed-off-by: Andriy Skulysh <c17819@cray.com>
Reviewed-by: Alexander Boyko <c17825@cray.com>
Reviewed-by: Andrew Perepechko <c17827@cray.com>
Reviewed-on: https://review.whamcloud.com/43115
Reviewed-by: Andrew Perepechko <andrew.perepechko@hpe.com>
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: Alexander Boyko <alexander.boyko@hpe.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
---

diff --git a/lustre/ldlm/ldlm_lib.c b/lustre/ldlm/ldlm_lib.c
index 34e0b14..b0eea47 100644
--- a/lustre/ldlm/ldlm_lib.c
+++ b/lustre/ldlm/ldlm_lib.c
@@ -2715,6 +2715,7 @@ static int target_recovery_thread(void *arg)
 
 	thread->t_env = env;
 	thread->t_id = -1; /* force filter_iobuf_get/put to use local buffers */
+	thread->t_task = current;
 	env->le_ctx.lc_thread = thread;
 	tgt_io_thread_init(thread); /* init thread_big_cache for IO requests */