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From 5a110946b41619577b365cdceddc4da551ff49f0 Mon Sep 17 00:00:00 2001
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From: kinsu <vpolakis@gmail.com>
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Date: Thu, 19 Sep 2019 08:34:32 +0000
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Subject: [PATCH 490/511] Segmentation fault occurs during truncate
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Problem:
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Segmentation fault occurs when bricks are nearly full 100% and in
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parallel truncate of a file is attempted (No space left on device).
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Prerequicite is that performance xlators are activated
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(read-ahead, write-behind etc)
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while stack unwind of the frames following an error responce
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from brick (No space left on device) frame->local includes a memory
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location that is not allocated via mem_get but via calloc.
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The destroyed frame is always ra_truncate_cbk winded from ra_ftruncate
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and the inode ptr is copied to the frame local in the wb_ftruncate.
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Fix:
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extra check is added for the pool ptr
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>Change-Id: Ic5d3bd0ab7011e40b2811c6dece063b256e4d9d1
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>Fixes: bz#1797882
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>Signed-off-by: kinsu <vpolakis@gmail.com>
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Upstream-patch: https://review.gluster.org/c/glusterfs/+/23445
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BUG: 1842449
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Change-Id: Ic5d3bd0ab7011e40b2811c6dece063b256e4d9d1
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Signed-off-by: nik-redhat <nladha@redhat.com>
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Reviewed-on: https://code.engineering.redhat.com/gerrit/220540
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Tested-by: RHGS Build Bot <nigelb@redhat.com>
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Reviewed-by: Sunil Kumar Heggodu Gopala Acharya <sheggodu@redhat.com>
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---
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libglusterfs/src/mem-pool.c | 8 ++++++++
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1 file changed, 8 insertions(+)
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diff --git a/libglusterfs/src/mem-pool.c b/libglusterfs/src/mem-pool.c
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index 73503e0..1390747 100644
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--- a/libglusterfs/src/mem-pool.c
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+++ b/libglusterfs/src/mem-pool.c
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@@ -857,6 +857,14 @@ mem_put(void *ptr)
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/* Not one of ours; don't touch it. */
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return;
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}
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+
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+ if (!hdr->pool_list) {
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+ gf_msg_callingfn("mem-pool", GF_LOG_CRITICAL, EINVAL,
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+ LG_MSG_INVALID_ARG,
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+ "invalid argument hdr->pool_list NULL");
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+ return;
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+ }
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+
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pool_list = hdr->pool_list;
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pt_pool = &pool_list->pools[hdr->power_of_two - POOL_SMALLEST];
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--
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1.8.3.1
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