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Date: Mon, 30 Jul 2018 16:12:19 +0800
From: kernel test robot <rong.a.chen@...el.com>
To: Dmitry Safonov <dima@...sta.com>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
LKP <lkp@...org>
Subject: [LKP] 7acf9d4237 BUG: kernel hang in test stage
Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git master
commit 7acf9d4237c46894e0fa0492dd96314a41742e84
Author: Dmitry Safonov <dima@...sta.com>
AuthorDate: Fri Jul 27 16:54:44 2018 +0100
Commit: David S. Miller <davem@...emloft.net>
CommitDate: Sun Jul 29 12:50:19 2018 -0700
netlink: Do not subscribe to non-existent groups
Make ABI more strict about subscribing to group > ngroups.
Code doesn't check for that and it looks bogus.
(one can subscribe to non-existing group)
Still, it's possible to bind() to all possible groups with (-1)
Cc: "David S. Miller" <davem@...emloft.net>
Cc: Herbert Xu <herbert@...dor.apana.org.au>
Cc: Steffen Klassert <steffen.klassert@...unet.com>
Cc: netdev@...r.kernel.org
Signed-off-by: Dmitry Safonov <dima@...sta.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
9939a46d90 NET: stmmac: align DMA stuff to largest cache line length
7acf9d4237 netlink: Do not subscribe to non-existent groups
25432eba9c openvswitch: meter: Fix setting meter id for new entries
+--------------------------------------------------+------------+------------+------------+
| | 9939a46d90 | 7acf9d4237 | 25432eba9c |
+--------------------------------------------------+------------+------------+------------+
| boot_successes | 20 | 4 | 4 |
| boot_failures | 22 | 11 | 11 |
| INFO:task_blocked_for_more_than#seconds | 22 | | |
| Kernel_panic-not_syncing:hung_task:blocked_tasks | 22 | | |
| BUG:kernel_hang_in_test_stage | 0 | 11 | 11 |
+--------------------------------------------------+------------+------------+------------+
[ 1414.113020] Writes: Total: 373492244 Max/Min: 0/0 Fail: 0
[ 1472.149785] CE: Reprogramming failure. Giving up
[ 1475.552294] Writes: Total: 387526813 Max/Min: 0/0 Fail: 0
[ 1509.501097] CE: Reprogramming failure. Giving up
[ 1536.992336] Writes: Total: 403788741 Max/Min: 0/0 Fail: 0
BUG: kernel hang in test stage
# HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD
git bisect start 0a930dcfc77cb12bbf9bffd69fbadcb0c237f577 d72e90f33aa4709ebecc5005562f52335e106a60 --
git bisect bad f605359102be537b6217dc49600f4369d1f04932 # 07:19 B 0 11 27 0 Merge 'm68k/master' into devel-catchup-201807300507
git bisect bad 375347c493a490f493fafa02f30fa23179acbdb9 # 07:53 B 0 11 27 0 Merge 'linux-review/Todd-Poynor/staging-gasket-fixes-and-cleanups/20180730-034316' into devel-catchup-201807300507
git bisect good 86b34080126c3f4254a3f9e8d5dcb447d9233bc8 # 08:05 G 11 0 6 6 0day base guard for 'devel-catchup-201807300507'
git bisect bad ed28433e6f289d33dd6b4bbf627a60396234db58 # 08:40 B 0 1 17 0 Merge 'net/master' into devel-catchup-201807300507
git bisect good 5b891af7fca14526b2a87c6f38b004e2df655ef4 # 08:54 G 11 0 11 11 bpf: Replace [u]int32_t and [u]int64_t in libbpf
git bisect good c259b4fb33ee6e7667bf1d34bf0803b7c5fdbdce # 09:03 G 10 0 3 3 netdevsim: don't leak devlink resources
git bisect good b0753408aadf32c7ece9e6b765017881e54af833 # 09:17 G 11 0 3 3 net: mdio-mux: bcm-iproc: fix wrong getter and setter pair
git bisect good 71eb5255f55bdb484d35ff7c9a1803f453dfbf82 # 09:25 G 11 0 11 11 bpf: use GFP_ATOMIC instead of GFP_KERNEL in bpf_parse_prog()
git bisect good 6d27c6dd1012e7be748ec05da78556319718fbe7 # 09:39 G 11 0 4 4 Merge branch 'net-socket-Fix-potential-spectre-v1-gadgets'
git bisect good 9939a46d90c6c76f4533d534dbadfa7b39dc6acc # 09:55 G 11 0 7 7 NET: stmmac: align DMA stuff to largest cache line length
git bisect bad 25432eba9cd8f2ef5afef55be811b010a004b5fa # 10:28 B 0 11 27 0 openvswitch: meter: Fix setting meter id for new entries
git bisect bad 7acf9d4237c46894e0fa0492dd96314a41742e84 # 11:03 B 0 6 22 0 netlink: Do not subscribe to non-existent groups
# first bad commit: [7acf9d4237c46894e0fa0492dd96314a41742e84] netlink: Do not subscribe to non-existent groups
git bisect good 9939a46d90c6c76f4533d534dbadfa7b39dc6acc # 11:14 G 31 0 15 22 NET: stmmac: align DMA stuff to largest cache line length
# extra tests with debug options
git bisect bad 7acf9d4237c46894e0fa0492dd96314a41742e84 # 11:48 B 0 11 27 0 netlink: Do not subscribe to non-existent groups
# extra tests on HEAD of linux-devel/devel-catchup-201807300507
git bisect bad 0a930dcfc77cb12bbf9bffd69fbadcb0c237f577 # 11:49 B 0 13 31 0 0day head guard for 'devel-catchup-201807300507'
# extra tests on tree/branch net/master
git bisect bad 25432eba9cd8f2ef5afef55be811b010a004b5fa # 11:50 B 0 11 27 0 openvswitch: meter: Fix setting meter id for new entries
# extra tests with first bad commit reverted
git bisect good e61543e57747e8fd80390af39504365a392cef2b # 12:04 G 11 0 4 4 Revert "netlink: Do not subscribe to non-existent groups"
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/lkp Intel Corporation
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