On Tue, 2019-03-05 at 15:27 +0000, Mel Gorman wrote:
> > On Tue, Mar 05, 2019 at 10:13:24AM -0500, Qian Cai wrote:
>> > > On Tue, 2019-03-05 at 14:42 +0000, Mel Gorman wrote:
>>> > > > On Mon, Mar 04, 2019 at 10:55:04PM -0500, Qian Cai wrote:
>>>> > > > > Reverted the patches below from linux-next seems fixed a crash while>
>>>> > > > running
>>>> > > > > LTP
>>>> > > > > oom01.
>>>> > > > >
>>>> > > > > 915c005358c1 mm, compaction: Capture a page under direct compaction -fix
>>>> > > > > e492a5711b67 mm, compaction: capture a page under direct compaction
>>>> > > > >
>>>> > > > > Especially, just removed this chunk along seems fixed the problem.
>>>> > > > >
>>>> > > > > --- a/mm/compaction.c
>>>> > > > > +++ b/mm/compaction.c
>>>> > > > > @@ -2227,10 +2227,10 @@ compact_zone(struct compact_control *cc, struct
>>>> > > > > capture_control *capc)
>>>> > > > > }
>>>> > > > >
>>>> > > > > /* Stop if a page has been captured */
>>>> > > > > - if (capc && capc->page) {
>>>> > > > > - ret = COMPACT_SUCCESS;
>>>> > > > > - break;
>>>> > > > > - }
>>>> > > > >
>>> > > >
>>> > > > It's hard to make sense of how this is connected to the bug. The
>>> > > > out-of-bounds warning would have required page flags to be corrupted
>>> > > > quite badly or maybe the use of an uninitialised page. How reproducible
>>> > > > has this been for you? I just ran the test 100 times with UBSAN and page
>>> > > > alloc debugging enabled and it completed correctly.
>>> > > >
Well, 100 times would take a long time to run with swapping enabled.
BTW, if you are running the tests without a swap device, I just confirmed (tried
10 times) that it won't trigger it. It seems needing kswapd to play.
>> > >
>> > > I did manage to reproduce this every time by running oom01 within 3 tries on
>> > > this x86_64 server and was unable to reproduce on arm64 and ppc64le
>> servers> > so
>> > > far.
>> > >
> >
> > Ok, so there is something specific about the machine or the kernel
> > config that is at play. You're seeing slub issues, page state issues
> > etc. Have you seen this on any other x86-based machine? Also please post
I have only one NUMA x86_64 server to test.
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 48
On-line CPU(s) list: 0-47
Thread(s) per core: 2
Core(s) per socket: 12
Socket(s): 2
NUMA node(s): 2
Vendor ID: GenuineIntel
CPU family: 6
Model: 63
Model name: Intel(R) Xeon(R) CPU E5-2650L v3 @ 1.80GHz
Stepping: 2
CPU MHz: 2097.552
BogoMIPS: 3595.80
Virtualization: VT-x
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 30720K
NUMA node0 CPU(s): 0-11,24-35
NUMA node1 CPU(s): 12-23,36-47
> > your kernel config. Are you certain that removing the block from your
https://git.sr.ht/~cai/linux-debug/tree/master/config
> > first email avoids any issue triggering?
> >
No, I tried again on the latest linux-next, and could trigger a memory
corruption below immediately with only that chunk of code removed.
However, I am still trigger NONE of these after reverted the above two commits.
This has been tested more than 10 times so far.
I don't understand this part.
@@ -2279,14 +2286,24 @@ static enum compact_result compact_zone_order(struct
zone *zone, int order, .ignore_skip_hint = (prio == MIN_COMPACT_PRIORITY),
.ignore_block_suitable = (prio == MIN_COMPACT_PRIORITY) }; + struct
capture_control capc = { + .cc = &cc, + .page = NULL, + }; + + if (capture) +
current->capture_control = &capc;
That check will always be true as it is,
struct page **capture;
*capture could be NULL, but not capture because in
__alloc_pages_direct_compact(), it does,
struct page *page = NULL;
[ 1337.354171] Tasks state (memory values in pages):
[ 1337.376691] [ pid ] uid tgid total_vm rss pgtables_bytes
swapents oom_score_adj name
[ 1337.415473] [ 842] 0 842 26405 18 212992 422
-1000 systemd-udevd
[ 1337.455205] [ 1120] 0 1120 25103 44 94208 44
0 irqbalance
[ 1337.496195] [ 1121] 0 1121 46184 9 368640 387
0 sssd
[ 1337.534072] [ 1122] 0 1122 95328 0 245760 758
0 rngd
[ 1337.570370] [ 1124] 81 1124 18353 104 167936 88
-900 dbus-daemon
[ 1337.609494] [ 1125] 0 1125 97658 58 385024 545
0 NetworkManager
[ 1337.649637] [ 1126] 998 1126 1325451 0 729088 2515
0 polkitd
[ 1337.687137] [ 1134] 995 1134 7359 6 90112 68
0 chronyd
[ 1337.724754] [ 1144] 0 1144 47800 17 385024 505
0 sssd_be
[ 1337.762143] [ 1203] 0 1203 23592 22 208896 201
-1000 sshd
[ 1337.798337] [ 1217] 0 1217 3780 0 69632 46
0 rhsmcertd
[ 1337.837743] [ 1242] 0 1242 50092 66 417792 247
0 sssd_nss
[ 1337.875687] [ 1254] 0 1254 23884 42 196608 204
0 systemd-logind
[ 1337.915916] [ 1263] 0 1263 23263 1 221184 346
0 systemd
[ 1337.953124] [ 1264] 0 1264 3917 0 65536 36
0 agetty
[ 1337.991199] [ 1265] 0 1265 3275 0 69632 32
0 agetty
[ 1338.031884] [ 1268] 0 1268 37093 0 307200 756
0 (sd-pam)
[ 1338.071161] [ 1431] 0 1431 56279 135 192512 314
0 rsyslogd
[ 1338.110818] [ 1467] 0 1467 37779 0 303104 293
0 sshd
[ 1338.147561] [ 1477] 0 1477 9022 13 106496 207
0 crond
[ 1338.184215] [ 1510] 0 1510 2424 0 65536 85
0 make
[ 1338.220461] [ 1514] 0 1514 6312 39 90112 62
0 runtest.sh
[ 1338.260766] [ 1530] 0 1530 37779 5 294912 289
0 sshd
[ 1338.297301] [ 1537] 0 1537 6344 25 90112 138
0 bash
[ 1338.333662] [ 1815] 0 1815 22774 849 196608 0
0 systemd-journal
[ 1338.375669] [ 1822] 0 1822 2184 1 65536 21
0 oom01
[ 1338.413577] [ 1823] 0 1823 2184 6 65536 25
0 oom01
[ 1338.451815] [ 1831] 0 1831 37060791 3004590 40919040 2037460
0 oom01
[ 1338.490312] [ 1882] 0 1882 18868 96 184320 0
0 sshd
[ 1338.530810] [ 1884] 0 1884 6312 40 65536 61
0 runtest.sh
[ 1338.570643]
oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0-1,global_oom,task_memcg=/user.slice,task=oom01,pid=1831,uid=0
[ 1338.630662] Out of memory: Killed process 1831 (oom01)
total-vm:148243164kB, anon-rss:12018360kB, file-rss:0kB, shmem-rss:0kB
[ 1338.871046] pagealloc: memory corruption
[ 1338.888610] 00000000fe6aab78: 07 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1338.927858] 000000000e5b758b: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1338.967042] 000000007be27dd4: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1339.006041] 00000000adc52ca0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1339.049599] 000000001b14ef55: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1339.088801] 0000000085aaa5be: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1339.127998] 00000000bff7bf43: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1339.170213] 0000000021489d04: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1339.212549] 000000000830d1fc: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1339.253430] 000000009e7738ad: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1339.294248] 000000006ceefc4b: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1339.335126] 000000003c957eb9: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1339.376173] 000000007e1a9b3c: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1339.416998] 000000008360db50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1339.457628] 000000004382d7a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1339.498205] 000000005c7468cf: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1339.539740] 0000000007128978: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1339.583374] 00000000ef6a7c8d: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1339.624196] 00000000fdb1a596: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1339.665038] 000000009d2b4871: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1339.705904] 00000000f64101ae: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1339.746724] 000000005932f1c3: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1339.787103] 000000006f387d61: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1339.827995] 00000000b4e9bac0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1339.868804] 000000003a67e0cc: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1339.909348] 00000000d1b415d7: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1339.950163] 000000006696703f: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1339.990887] 000000007236a552: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1340.031484] 00000000ced67fc2: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1340.074633] 00000000eacb00b5: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1340.115769] 00000000cd762b0f: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1340.156785] 000000002c5bed3a: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1340.197483] 00000000df97bd05: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1340.237216] 000000006c8bcd34: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1340.277982] 0000000056769a33: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1340.318833] 00000000b3a8b011: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1340.359718] 00000000fb93777f: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1340.400749] 00000000ed72f51b: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1340.441546] 000000000f0a9c06: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1340.483011] 0000000058acc3cd: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1340.523274] 00000000b4d019be: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1340.564549] 000000009f8786cc: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1340.607931] 00000000df5ef2ee: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1340.648340] 00000000702ccf47: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1340.688788] 0000000099b19e48: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1340.729510] 0000000039f02ec9: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1340.770114] 0000000083addea3: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1340.810756] 0000000037edee75: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1340.851188] 000000000e4c2e2d: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1340.891941] 000000008d149b07: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1340.932548] 00000000909f66ff: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1340.974102] 0000000081df28c7: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1341.014377] 00000000b84b7870: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1341.057578] 0000000010b3382a: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1341.101431] 0000000057ffa361: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1341.142096] 0000000038a61326: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1341.183669] 000000006587b87c: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1341.225377] 00000000ef60f1bf: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1341.267021] 00000000c744bb03: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1341.307789] 0000000044b4fdb1: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1341.348610] 00000000531f189e: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1341.389665] 000000001b8a4714: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1341.433146] 000000004bffa794: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1341.473933] 000000009f2b6148: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1341.514885] 0000000042c62fd1: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1341.555589] 0000000059c01744: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1341.597952] 00000000478c3d29: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1341.639360] 000000000eea2248: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1341.679780] 00000000c5ed98a7: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1341.720502] 0000000074bbce1d: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1341.761500] 0000000097880cb2: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1341.802288] 000000008b79b1fb: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1341.843276] 00000000defe452a: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1341.884060] 00000000bde4c4b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1341.924744] 000000008e846c70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1341.965668] 000000007336d83e: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1342.006371] 00000000eb55a3a2: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1342.047310] 00000000b1c967a3: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1342.089204] 00000000d2f1e1d9: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1342.133340] 0000000028b653d5: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1342.173945] 0000000049ee0f29: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1342.214806] 000000009444ab05: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1342.255680] 0000000023df52aa: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1342.296482] 000000001f3595e2: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1342.335955] 00000000f6b3d57b: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1342.376908] 000000002d4fb3ee: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1342.417942] 000000002c32aaa8: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1342.458733] 000000000f7db7b7: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1342.497855] 000000008f107ca2: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1342.537396] 00000000ab15fa75: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1342.577357] 000000004f3e42cc: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1342.620410] 00000000ddcdfc4b: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1342.661380] 00000000006f449e: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1342.702263] 00000000ed65b70a: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1342.743280] 00000000904810ad: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1342.783915] 000000004fab9e3c: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1342.824915] 000000002b2c24c2: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1342.865700] 000000006240fcfd: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1342.906510] 00000000257e52b5: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1342.947344] 00000000157a76e2: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1342.988142] 000000005475a4da: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1343.028494] 0000000069a7362e: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1343.069200] 000000004ac4c37a: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1343.111084] 00000000d941b898: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1343.153683] 00000000cf25dfd6: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1343.194468] 000000002d010c45: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1343.235185] 000000001f8523c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1343.276074] 0000000026283d91: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1343.316850] 00000000f8dc3d4c: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1343.357643] 00000000de3d6424: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1343.398590] 00000000ed7571c6: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1343.439336] 000000000c87eccd: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1343.480140] 000000007610d962: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1343.520697] 000000008f8e1aa2: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1343.561460] 00000000fd77596e: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1343.602090] 00000000389c7804: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1343.646002] 000000004737fa15: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1343.687710] 000000001e5634f1: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1343.728605] 00000000183f96e4: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1343.769326] 00000000b20a94b4: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1343.809754] 000000007bef215e: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1343.850500] 00000000816c1095: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1343.891288] 00000000b28c77f6: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1343.932026] 00000000a3305056: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1343.972942] 00000000c446739e: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1344.013677] 00000000f5113aae: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1344.054482] 000000004da60f75: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1344.095128] 00000000467f0c89: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1344.137676] 00000000c7e72d81: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1344.181239] 00000000d41dfd91: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1344.222144] 0000000090dc57ca: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1344.262891] 00000000a0f8a9d6: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1344.302856] 0000000047f123e5: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1344.343124] 0000000056e37cd5: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1344.383321] 0000000089111e42: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1344.423507] 00000000d71db9b3: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1344.462497] 00000000148c17ae: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1344.501416] 000000006075ced4: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1344.540392] 000000006aa48b77: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1344.579454] 000000005043d7f8: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1344.618613] 0000000012833cdb: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1344.661629] 00000000055b9f9f: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1344.701222] 0000000052ce91c9: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1344.740252] 00000000b350a135: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1344.779144] 00000000bb07a85c: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1344.818149] 0000000081c6e075: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1344.857128] 00000000cba53c42: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1344.896097] 00000000d18e908a: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1344.934712] 00000000f0c0c0da: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1344.975040] 00000000de3dc587: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1345.014881] 00000000c89cf5dd: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1345.054538] 0000000014407b3f: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1345.093740] 000000000f63ef05: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1345.132836] 0000000034d2338e: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1345.176310] 0000000062639f04: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1345.215712] 000000004a3abf19: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1345.254786] 0000000061600a22: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1345.294000] 00000000dc954953: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1345.333751] 000000002d41f5ad: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1345.372762] 0000000030f1d334: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1345.412011] 0000000029fdc061: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1345.451606] 0000000051767b56: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1345.490638] 000000008f9bc2dc: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1345.529637] 000000001f1014dd: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1345.568600] 00000000a4ddbf38: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1345.607936] 00000000b7ff4e85: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1345.646965] 00000000833025ba: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1345.691013] 0000000009442d5a: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1345.730149] 00000000f0c4b940: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1345.769263] 000000001c9e0352: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1345.808782] 000000005e255711: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1345.847775] 00000000d10d0f01: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1345.887154] 000000007ac060e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1345.926696] 00000000b4130121: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1345.965597] 0000000045f7e909: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1346.004777] 000000003960506e: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1346.044231] 000000005cd63cf7: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1346.083894] 0000000008fca843: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1346.123674] 000000004c10d2f6: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1346.162463] 00000000a8d87809: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1346.205525] 000000000425101d: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1346.244122] 00000000946a8e9c: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1346.282831] 000000000abd7e72: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1346.322372] 000000008b7d9850: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1346.361332] 00000000df8a3a2a: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1346.400825] 0000000042bc7e5a: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1346.441100] 00000000b9f9dbb4: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1346.480853] 00000000c34370c9: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1346.520052] 000000000a103ceb: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 ................
[ 1346.559063]
==================================================================
[ 1346.591444] BUG: KASAN: use-after-free in hex_dump_to_buffer+0xb23/0xb80
[ 1346.621622] Read of size 1 at addr ffff8881d21c0bd0 by task
kcompactd0/263
[ 1346.652610]
[ 1346.659268] CPU: 25 PID: 263 Comm: kcompactd0 Tainted: G W
5.0.0-next-20190305+ #50
[ 1346.702988] Hardware name: HP ProLiant DL180 Gen9/ProLiant DL180 Gen9,
BIOS U20 10/25/2017
[ 1346.741280] Call Trace:
[ 1346.752240] dump_stack+0x62/0x9a
[ 1346.767064] print_address_description.cold.2+0x9/0x28b
[ 1346.790596] kasan_report.cold.3+0x7a/0xb5
[ 1346.828218] __asan_report_load1_noabort+0x19/0x20
[ 1346.849644] hex_dump_to_buffer+0xb23/0xb80
[ 1346.889066] print_hex_dump+0xf5/0x180
[ 1346.979759] kernel_poison_pages.cold.2+0x4f/0x89
[ 1347.001003] post_alloc_hook+0x186/0x290
[ 1347.018600] split_map_pages+0x1e5/0x530
[ 1347.094053] compaction_alloc+0x1050/0x25f0
[ 1347.173674] unmap_and_move+0x37/0x1e70
[ 1347.214386] migrate_pages+0x2ca/0xb20
[ 1347.295869] compact_zone.isra.2+0x19ee/0x3680
[ 1347.373747] kcompactd_do_work+0x2dd/0x670
[ 1347.445953] kcompactd+0x1d8/0x6c0
[ 1347.534669] kthread+0x32c/0x3f0
[ 1347.585440] ret_from_fork+0x35/0x40
[ 1347.601437]
[ 1347.608134] The buggy address belongs to the page:
[ 1347.629255] page:ffffea0007487000 count:0 mapcount:-128
mapping:0000000000000000 index:0x1
[ 1347.665980] flags: 0x5fffe000000000()
[ 1347.682319] raw: 005fffe000000000 ffffea000694c008 ffffea000708fc08
0000000000000000
[ 1347.720574] raw: 0000000000000001 0000000000000003 00000000ffffff7f
0000000000000000
[ 1347.757115] page dumped because: kasan: bad access detected
[ 1347.805210]
[ 1347.811839] Memory state around the buggy address:
[ 1347.833245] ffff8881d21c0a80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ff ff
[ 1347.865547] ffff8881d21c0b00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ff ff
[ 1347.897911] >ffff8881d21c0b80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ff ff
[ 1347.930255] ^
[ 1347.956325] ffff8881d21c0c00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ff ff
[ 1347.988841] ffff8881d21c0c80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ff ff
[ 1348.021259]
==================================================================
[ 1348.053236] Disabling lock debugging due to kernel taint
[ 1348.077109] BUG: unable to handle kernel paging request at
ffff8881d21c0bd0
[ 1348.108458] #PF error: [normal kernel read fault]
[ 1348.129480] PGD 40aa01067 P4D 40aa01067 PUD 47f546067 PMD 47f4b5067 PTE
800ffffe2de3f060
[ 1348.167122] Oops: 0000 [#1] SMP DEBUG_PAGEALLOC KASAN PTI
[ 1348.191286] CPU: 25 PID: 263 Comm: kcompactd0 Tainted: G B W
5.0.0-next-20190305+ #50
[ 1348.234674] Hardware name: HP ProLiant DL180 Gen9/ProLiant DL180 Gen9,
BIOS U20 10/25/2017
[ 1348.272578] RIP: 0010:hex_dump_to_buffer+0xe0/0xb80
[ 1348.294479] Code: 00 00 fc ff df 48 8b 5d c0 48 89 da 48 c1 ea 03 0f b6
04 02 48 89 da 83 e2 07 38 d0 7f 08 84 c0 0f 85 3b 0a 00 00 48 8b 45 c0
<44> 0f b6 38 b8 01 00 00 00 48 2d a0 1a b2 b7 4c 89 fb 48 89 45 a8
[ 1348.379540] RSP: 0000:ffff8881f56df578 EFLAGS: 00010286
[ 1348.403349] RAX: ffff8881d21c0bd0 RBX: ffff8881d21c0bd0 RCX:
ffffffffb67fb779
[ 1348.436156] RDX: 0000000000000000 RSI: 0000000000000004 RDI:
ffffffffb80d0fa0
[ 1348.468254] RBP: ffff8881f56df5f8 R08: fffffbfff701a1f5 R09:
0000000000000083
[ 1348.500185] R10: fffffbfff701a1f4 R11: ffffffffb80d0fa3 R12:
ffff8881f56df658
[ 1348.533403] R13: 0000000000000001 R14: ffff8881d21c0bd0 R15:
0000000000000420
[ 1348.565942] FS: 0000000000000000(0000) GS:ffff8881f7c80000(0000)
knlGS:0000000000000000
[ 1348.602616] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1348.628422] CR2: ffff8881d21c0bd0 CR3: 0000000408816005 CR4:
00000000001606a0
[ 1348.660521] Call Trace:
[ 1348.692079] print_hex_dump+0xf5/0x180
[ 1348.787020] kernel_poison_pages.cold.2+0x4f/0x89
[ 1348.808089] post_alloc_hook+0x186/0x290
[ 1348.825648] split_map_pages+0x1e5/0x530
[ 1348.901010] compaction_alloc+0x1050/0x25f0
[ 1348.979691] unmap_and_move+0x37/0x1e70
[ 1349.016289] migrate_pages+0x2ca/0xb20
[ 1349.096343] compact_zone.isra.2+0x19ee/0x3680
[ 1349.174128] kcompactd_do_work+0x2dd/0x670
[ 1349.248832] kcompactd+0x1d8/0x6c0
[ 1349.339390] kthread+0x32c/0x3f0
[ 1349.390109] ret_from_fork+0x35/0x40
[ 1349.406571] Modules linked in: nls_iso8859_1 nls_cp437 vfat fat
kvm_intel kvm irqbypass efivars ip_tables x_tables xfs sd_mod ahci libahci
igb libata i2c_algo_bit i2c_core dm_mirror dm_region_hash dm_log dm_mod
efivarfs
[ 1349.494917] CR2: ffff8881d21c0bd0
[ 1349.509747] ---[ end trace a3cd895b8ad403bc ]---
[ 1349.530429] RIP: 0010:hex_dump_to_buffer+0xe0/0xb80
[ 1349.552222] Code: 00 00 fc ff df 48 8b 5d c0 48 89 da 48 c1 ea 03 0f b6
04 02 48 89 da 83 e2 07 38 d0 7f 08 84 c0 0f 85 3b 0a 00 00 48 8b 45 c0
<44> 0f b6 38 b8 01 00 00 00 48 2d a0 1a b2 b7 4c 89 fb 48 89 45 a8
[ 1349.636407] RSP: 0000:ffff8881f56df578 EFLAGS: 00010286
[ 1349.659450] RAX: ffff8881d21c0bd0 RBX: ffff8881d21c0bd0 RCX:
ffffffffb67fb779
[ 1349.691330] RDX: 0000000000000000 RSI: 0000000000000004 RDI:
ffffffffb80d0fa0
[ 1349.723362] RBP: ffff8881f56df5f8 R08: fffffbfff701a1f5 R09:
0000000000000083
[ 1349.758554] R10: fffffbfff701a1f4 R11: ffffffffb80d0fa3 R12:
ffff8881f56df658
[ 1349.792071] R13: 0000000000000001 R14: ffff8881d21c0bd0 R15:
0000000000000420
[ 1349.824033] FS: 0000000000000000(0000) GS:ffff8881f7c80000(0000)
knlGS:0000000000000000
[ 1349.860332] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1349.886064] CR2: ffff8881d21c0bd0 CR3: 0000000408816005 CR4:
00000000001606a0
[ 1349.918002] Kernel panic - not syncing: Fatal exception
[ 1349.941390] Kernel Offset: 0x35600000 from 0xffffffff81000000
(relocation range: 0xffffffff80000000-0xffffffffbfffffff)
[ 1349.989812] ---[ end Kernel panic - not syncing: Fatal exception ]---
