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authorOvidiu Panait <ovidiu.panait@windriver.com>2023-07-04 10:39:17 +0300
committerRichard Purdie <richard.purdie@linuxfoundation.org>2023-07-10 11:36:34 +0100
commit03a94d9a35bf56a4bdf447d3f7431d8af7b23722 (patch)
tree7ed776106104d60bad1d3c1906e0b1a072c947ac /meta/recipes-extended/mdadm/files
parent3c9c721be3002be2c81581615c72612748d2282a (diff)
downloadpoky-03a94d9a35bf56a4bdf447d3f7431d8af7b23722.tar.gz
mdadm: fix segfaults when running ptests
Currently, some segfaults are reported when running ptest: mdadm[12333]: segfault at 0 ip 00007fe855924060 sp 00007ffc4d6caf88 error 4 in libc.so.6[7f) Code: d2 0f 84 b7 0f 00 00 48 83 fa 01 0f 84 b9 0f 00 00 49 89 d3 89 f1 89 f8 48 83 e1 3f 4f Backport the following upstream commits to fix them: 679bd9508a30 ("DDF: Cleanup validate_geometry_ddf_container()") 2b93288a5650 ("DDF: Fix NULL pointer dereference in validate_geometry_ddf()") 548e9b916f86 ("mdadm/Grow: Fix use after close bug by closing after fork") 9ae62977b51d ("monitor: Avoid segfault when calling NULL get_bad_blocks") The fixes are part of the "Bug fixes and testing improvments" patchset [1]. [1] https://www.spinics.net/lists/raid/msg70621.html (From OE-Core rev: 9585009e3e505b361cd32b14e0e85e77e7822878) Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/recipes-extended/mdadm/files')
-rw-r--r--meta/recipes-extended/mdadm/files/0001-DDF-Cleanup-validate_geometry_ddf_container.patch148
-rw-r--r--meta/recipes-extended/mdadm/files/0002-DDF-Fix-NULL-pointer-dereference-in-validate_geometr.patch56
-rw-r--r--meta/recipes-extended/mdadm/files/0003-mdadm-Grow-Fix-use-after-close-bug-by-closing-after-.patch91
-rw-r--r--meta/recipes-extended/mdadm/files/0004-monitor-Avoid-segfault-when-calling-NULL-get_bad_blo.patch42
4 files changed, 337 insertions, 0 deletions
diff --git a/meta/recipes-extended/mdadm/files/0001-DDF-Cleanup-validate_geometry_ddf_container.patch b/meta/recipes-extended/mdadm/files/0001-DDF-Cleanup-validate_geometry_ddf_container.patch
new file mode 100644
index 0000000000..cea435f83b
--- /dev/null
+++ b/meta/recipes-extended/mdadm/files/0001-DDF-Cleanup-validate_geometry_ddf_container.patch
@@ -0,0 +1,148 @@
1From ca458f4dcc4de9403298f67543466ce4bbc8f8ae Mon Sep 17 00:00:00 2001
2From: Logan Gunthorpe <logang@deltatee.com>
3Date: Wed, 22 Jun 2022 14:25:07 -0600
4Subject: [PATCH 1/4] DDF: Cleanup validate_geometry_ddf_container()
5
6Move the function up so that the function declaration is not necessary
7and remove the unused arguments to the function.
8
9No functional changes are intended but will help with a bug fix in the
10next patch.
11
12Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
13Acked-by: Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com>
14Signed-off-by: Jes Sorensen <jes@trained-monkey.org>
15
16Upstream-Status: Backport
17
18Reference to upstream patch:
19https://git.kernel.org/pub/scm/utils/mdadm/mdadm.git/commit/?id=679bd9508a30
20
21Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
22---
23 super-ddf.c | 88 ++++++++++++++++++++++++-----------------------------
24 1 file changed, 39 insertions(+), 49 deletions(-)
25
26diff --git a/super-ddf.c b/super-ddf.c
27index 3f304cd..65cf727 100644
28--- a/super-ddf.c
29+++ b/super-ddf.c
30@@ -503,13 +503,6 @@ struct ddf_super {
31 static int load_super_ddf_all(struct supertype *st, int fd,
32 void **sbp, char *devname);
33 static int get_svd_state(const struct ddf_super *, const struct vcl *);
34-static int
35-validate_geometry_ddf_container(struct supertype *st,
36- int level, int layout, int raiddisks,
37- int chunk, unsigned long long size,
38- unsigned long long data_offset,
39- char *dev, unsigned long long *freesize,
40- int verbose);
41
42 static int validate_geometry_ddf_bvd(struct supertype *st,
43 int level, int layout, int raiddisks,
44@@ -3322,6 +3315,42 @@ static int reserve_space(struct supertype *st, int raiddisks,
45 return 1;
46 }
47
48+static int
49+validate_geometry_ddf_container(struct supertype *st,
50+ int level, int raiddisks,
51+ unsigned long long data_offset,
52+ char *dev, unsigned long long *freesize,
53+ int verbose)
54+{
55+ int fd;
56+ unsigned long long ldsize;
57+
58+ if (level != LEVEL_CONTAINER)
59+ return 0;
60+ if (!dev)
61+ return 1;
62+
63+ fd = dev_open(dev, O_RDONLY|O_EXCL);
64+ if (fd < 0) {
65+ if (verbose)
66+ pr_err("ddf: Cannot open %s: %s\n",
67+ dev, strerror(errno));
68+ return 0;
69+ }
70+ if (!get_dev_size(fd, dev, &ldsize)) {
71+ close(fd);
72+ return 0;
73+ }
74+ close(fd);
75+ if (freesize) {
76+ *freesize = avail_size_ddf(st, ldsize >> 9, INVALID_SECTORS);
77+ if (*freesize == 0)
78+ return 0;
79+ }
80+
81+ return 1;
82+}
83+
84 static int validate_geometry_ddf(struct supertype *st,
85 int level, int layout, int raiddisks,
86 int *chunk, unsigned long long size,
87@@ -3347,11 +3376,9 @@ static int validate_geometry_ddf(struct supertype *st,
88 level = LEVEL_CONTAINER;
89 if (level == LEVEL_CONTAINER) {
90 /* Must be a fresh device to add to a container */
91- return validate_geometry_ddf_container(st, level, layout,
92- raiddisks, *chunk,
93- size, data_offset, dev,
94- freesize,
95- verbose);
96+ return validate_geometry_ddf_container(st, level, raiddisks,
97+ data_offset, dev,
98+ freesize, verbose);
99 }
100
101 if (!dev) {
102@@ -3449,43 +3476,6 @@ static int validate_geometry_ddf(struct supertype *st,
103 return 1;
104 }
105
106-static int
107-validate_geometry_ddf_container(struct supertype *st,
108- int level, int layout, int raiddisks,
109- int chunk, unsigned long long size,
110- unsigned long long data_offset,
111- char *dev, unsigned long long *freesize,
112- int verbose)
113-{
114- int fd;
115- unsigned long long ldsize;
116-
117- if (level != LEVEL_CONTAINER)
118- return 0;
119- if (!dev)
120- return 1;
121-
122- fd = dev_open(dev, O_RDONLY|O_EXCL);
123- if (fd < 0) {
124- if (verbose)
125- pr_err("ddf: Cannot open %s: %s\n",
126- dev, strerror(errno));
127- return 0;
128- }
129- if (!get_dev_size(fd, dev, &ldsize)) {
130- close(fd);
131- return 0;
132- }
133- close(fd);
134- if (freesize) {
135- *freesize = avail_size_ddf(st, ldsize >> 9, INVALID_SECTORS);
136- if (*freesize == 0)
137- return 0;
138- }
139-
140- return 1;
141-}
142-
143 static int validate_geometry_ddf_bvd(struct supertype *st,
144 int level, int layout, int raiddisks,
145 int *chunk, unsigned long long size,
146--
1472.39.1
148
diff --git a/meta/recipes-extended/mdadm/files/0002-DDF-Fix-NULL-pointer-dereference-in-validate_geometr.patch b/meta/recipes-extended/mdadm/files/0002-DDF-Fix-NULL-pointer-dereference-in-validate_geometr.patch
new file mode 100644
index 0000000000..fafe88b49c
--- /dev/null
+++ b/meta/recipes-extended/mdadm/files/0002-DDF-Fix-NULL-pointer-dereference-in-validate_geometr.patch
@@ -0,0 +1,56 @@
1From 14f110f0286d38e29ef5e51d7f72e049c2f18323 Mon Sep 17 00:00:00 2001
2From: Logan Gunthorpe <logang@deltatee.com>
3Date: Wed, 22 Jun 2022 14:25:08 -0600
4Subject: [PATCH 2/4] DDF: Fix NULL pointer dereference in
5 validate_geometry_ddf()
6
7A relatively recent patch added a call to validate_geometry() in
8Manage_add() that has level=LEVEL_CONTAINER and chunk=NULL.
9
10This causes some ddf tests to segfault which aborts the test suite.
11
12To fix this, avoid dereferencing chunk when the level is
13LEVEL_CONTAINER or LEVEL_NONE.
14
15Fixes: 1f5d54a06df0 ("Manage: Call validate_geometry when adding drive to external container")
16Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
17Acked-by: Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com>
18Signed-off-by: Jes Sorensen <jes@trained-monkey.org>
19
20Upstream-Status: Backport
21
22Reference to upstream patch:
23https://git.kernel.org/pub/scm/utils/mdadm/mdadm.git/commit/?id=2b93288a5650
24
25Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
26---
27 super-ddf.c | 6 +++---
28 1 file changed, 3 insertions(+), 3 deletions(-)
29
30diff --git a/super-ddf.c b/super-ddf.c
31index 65cf727..3ef1293 100644
32--- a/super-ddf.c
33+++ b/super-ddf.c
34@@ -3369,9 +3369,6 @@ static int validate_geometry_ddf(struct supertype *st,
35 * If given BVDs, we make an SVD, changing all the GUIDs in the process.
36 */
37
38- if (*chunk == UnSet)
39- *chunk = DEFAULT_CHUNK;
40-
41 if (level == LEVEL_NONE)
42 level = LEVEL_CONTAINER;
43 if (level == LEVEL_CONTAINER) {
44@@ -3381,6 +3378,9 @@ static int validate_geometry_ddf(struct supertype *st,
45 freesize, verbose);
46 }
47
48+ if (*chunk == UnSet)
49+ *chunk = DEFAULT_CHUNK;
50+
51 if (!dev) {
52 mdu_array_info_t array = {
53 .level = level,
54--
552.39.1
56
diff --git a/meta/recipes-extended/mdadm/files/0003-mdadm-Grow-Fix-use-after-close-bug-by-closing-after-.patch b/meta/recipes-extended/mdadm/files/0003-mdadm-Grow-Fix-use-after-close-bug-by-closing-after-.patch
new file mode 100644
index 0000000000..a954ab027a
--- /dev/null
+++ b/meta/recipes-extended/mdadm/files/0003-mdadm-Grow-Fix-use-after-close-bug-by-closing-after-.patch
@@ -0,0 +1,91 @@
1From bd064da1469a6a07331b076a0294a8c6c3c38526 Mon Sep 17 00:00:00 2001
2From: Logan Gunthorpe <logang@deltatee.com>
3Date: Wed, 22 Jun 2022 14:25:09 -0600
4Subject: [PATCH 3/4] mdadm/Grow: Fix use after close bug by closing after fork
5
6The test 07reshape-grow fails most of the time. But it succeeds around
71 in 5 times. When it does succeed, it causes the tests to die because
8mdadm has segfaulted.
9
10The segfault was caused by mdadm attempting to repoen a file
11descriptor that was already closed. The backtrace of the segfault
12was:
13
14 #0 __strncmp_avx2 () at ../sysdeps/x86_64/multiarch/strcmp-avx2.S:101
15 #1 0x000056146e31d44b in devnm2devid (devnm=0x0) at util.c:956
16 #2 0x000056146e31dab4 in open_dev_flags (devnm=0x0, flags=0)
17 at util.c:1072
18 #3 0x000056146e31db22 in open_dev (devnm=0x0) at util.c:1079
19 #4 0x000056146e3202e8 in reopen_mddev (mdfd=4) at util.c:2244
20 #5 0x000056146e329f36 in start_array (mdfd=4,
21 mddev=0x7ffc55342450 "/dev/md0", content=0x7ffc55342860,
22 st=0x56146fc78660, ident=0x7ffc55342f70, best=0x56146fc6f5d0,
23 bestcnt=10, chosen_drive=0, devices=0x56146fc706b0, okcnt=5,
24 sparecnt=0, rebuilding_cnt=0, journalcnt=0, c=0x7ffc55342e90,
25 clean=1, avail=0x56146fc78720 "\001\001\001\001\001",
26 start_partial_ok=0, err_ok=0, was_forced=0)
27 at Assemble.c:1206
28 #6 0x000056146e32c36e in Assemble (st=0x56146fc78660,
29 mddev=0x7ffc55342450 "/dev/md0", ident=0x7ffc55342f70,
30 devlist=0x56146fc6e2d0, c=0x7ffc55342e90)
31 at Assemble.c:1914
32 #7 0x000056146e312ac9 in main (argc=11, argv=0x7ffc55343238)
33 at mdadm.c:1510
34
35The file descriptor was closed early in Grow_continue(). The noted commit
36moved the close() call to close the fd above the fork which caused the
37parent process to return with a closed fd.
38
39This meant reshape_array() and Grow_continue() would return in the parent
40with the fd forked. The fd would eventually be passed to reopen_mddev()
41which returned an unhandled NULL from fd2devnm() which would then be
42dereferenced in devnm2devid.
43
44Fix this by moving the close() call below the fork. This appears to
45fix the 07revert-grow test. While we're at it, switch to using
46close_fd() to invalidate the file descriptor.
47
48Fixes: 77b72fa82813 ("mdadm/Grow: prevent md's fd from being occupied during delayed time")
49Cc: Alex Wu <alexwu@synology.com>
50Cc: BingJing Chang <bingjingc@synology.com>
51Cc: Danny Shih <dannyshih@synology.com>
52Cc: ChangSyun Peng <allenpeng@synology.com>
53Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
54Acked-by: Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com>
55Signed-off-by: Jes Sorensen <jes@trained-monkey.org>
56
57Upstream-Status: Backport
58
59Reference to upstream patch:
60https://git.kernel.org/pub/scm/utils/mdadm/mdadm.git/commit/?id=548e9b916f86
61
62Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
63---
64 Grow.c | 4 +++-
65 1 file changed, 3 insertions(+), 1 deletion(-)
66
67diff --git a/Grow.c b/Grow.c
68index 9c6fc95..a8e4e83 100644
69--- a/Grow.c
70+++ b/Grow.c
71@@ -3501,7 +3501,6 @@ started:
72 return 0;
73 }
74
75- close(fd);
76 /* Now we just need to kick off the reshape and watch, while
77 * handling backups of the data...
78 * This is all done by a forked background process.
79@@ -3522,6 +3521,9 @@ started:
80 break;
81 }
82
83+ /* Close unused file descriptor in the forked process */
84+ close_fd(&fd);
85+
86 /* If another array on the same devices is busy, the
87 * reshape will wait for them. This would mean that
88 * the first section that we suspend will stay suspended
89--
902.39.1
91
diff --git a/meta/recipes-extended/mdadm/files/0004-monitor-Avoid-segfault-when-calling-NULL-get_bad_blo.patch b/meta/recipes-extended/mdadm/files/0004-monitor-Avoid-segfault-when-calling-NULL-get_bad_blo.patch
new file mode 100644
index 0000000000..72cb40f782
--- /dev/null
+++ b/meta/recipes-extended/mdadm/files/0004-monitor-Avoid-segfault-when-calling-NULL-get_bad_blo.patch
@@ -0,0 +1,42 @@
1From 2296a4a441b4b8546e2eb32403930f1bb8f3ee4a Mon Sep 17 00:00:00 2001
2From: Logan Gunthorpe <logang@deltatee.com>
3Date: Wed, 22 Jun 2022 14:25:10 -0600
4Subject: [PATCH 4/4] monitor: Avoid segfault when calling NULL get_bad_blocks
5
6Not all struct superswitch implement a get_bad_blocks() function,
7yet mdmon seems to call it without checking for NULL and thus
8occasionally segfaults in the test 10ddf-geometry.
9
10Fix this by checking for NULL before calling it.
11
12Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
13Acked-by: Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com>
14Signed-off-by: Jes Sorensen <jes@trained-monkey.org>
15
16Upstream-Status: Backport
17
18Reference to upstream patch:
19https://git.kernel.org/pub/scm/utils/mdadm/mdadm.git/commit/?id=9ae62977b51d
20
21Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
22---
23 monitor.c | 3 +++
24 1 file changed, 3 insertions(+)
25
26diff --git a/monitor.c b/monitor.c
27index afc3e50..8e43c0d 100644
28--- a/monitor.c
29+++ b/monitor.c
30@@ -312,6 +312,9 @@ static int check_for_cleared_bb(struct active_array *a, struct mdinfo *mdi)
31 struct md_bb *bb;
32 int i;
33
34+ if (!ss->get_bad_blocks)
35+ return -1;
36+
37 /*
38 * Get a list of bad blocks for an array, then read list of
39 * acknowledged bad blocks from kernel and compare it against metadata
40--
412.39.1
42
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2025-01-10 14:30:50 +0000