From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dmitry Safonov Subject: Re: [LKP] 7acf9d4237 BUG: kernel hang in test stage Date: Mon, 30 Jul 2018 14:08:45 +0100 Message-ID: <1532956125.2679.28.camel@arista.com> References: <20180730081219.GC30690@shao2-debian> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, LKP , David Miller To: kernel test robot Return-path: In-Reply-To: <20180730081219.GC30690@shao2-debian> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Thanks for the report, looking into this.. On Mon, 2018-07-30 at 16:12 +0800, kernel test robot wrote: > 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 > AuthorDate: Fri Jul 27 16:54:44 2018 +0100 > Commit: David S. Miller > 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" > Cc: Herbert Xu > Cc: Steffen Klassert > Cc: netdev@vger.kernel.org > Signed-off-by: Dmitry Safonov > Signed-off-by: David S. Miller > > 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