bisecting cause commit starting from cd796ed3345030aa1bb332fe5c793b3dddaf56e7 building syzkaller on 51a9082e064119316893e12187cab2843283ed4d testing commit cd796ed3345030aa1bb332fe5c793b3dddaf56e7 with gcc (GCC) 8.1.0 kernel signature: 670bbe31e425c841fae88629581cdc82b03099e0312a5ba2be8771e9e24121b7 all runs: crashed: WARNING in ext4_xattr_set_entry testing release v5.9 testing commit bbf5c979011a099af5dc76498918ed7df445635b with gcc (GCC) 8.1.0 kernel signature: 515f03a0aeeb133aa2b2f66b7fe0a9c57066848d91e7279ea1677c9a1e253520 all runs: crashed: WARNING in ext4_xattr_set_entry testing release v5.8 testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c with gcc (GCC) 8.1.0 kernel signature: 0261a6cb35e3849e99b6fb76bc5f35549f662b9bca66de0c03696d60dfe31b27 all runs: crashed: WARNING in ext4_xattr_set_entry testing release v5.7 testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 with gcc (GCC) 8.1.0 kernel signature: f3397b652782618d9d3eb5d87f95da90d42790679e4cc2e4c0f8d9679708157b all runs: crashed: WARNING in ext4_xattr_set_entry testing release v5.6 testing commit 7111951b8d4973bda27ff663f2cf18b663d15b48 with gcc (GCC) 8.1.0 kernel signature: 699d7c9d5cada8a1e74a63c5498753e89bb4dfa242ab0232c18db348469f0ff3 all runs: crashed: WARNING in ext4_xattr_set_entry testing release v5.5 testing commit d5226fa6dbae0569ee43ecfc08bdcd6770fc4755 with gcc (GCC) 8.1.0 kernel signature: f6a07960c19bd7cff424f18cefe29d03a264037c16eb561e084814a963611835 all runs: crashed: WARNING in ext4_xattr_set_entry testing release v5.4 testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 with gcc (GCC) 8.1.0 kernel signature: c0830d035a572aeeee865ff079e6a5b6b7992fe3e7b1ff162518c074ce6ecfd7 all runs: crashed: WARNING in ext4_xattr_set_entry testing release v5.3 testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 with gcc (GCC) 8.1.0 kernel signature: 23cacfd634f8db51b97c2d204b661c1fc6f5787c270bcab3d30375ced88d8ed1 all runs: crashed: WARNING in ext4_xattr_set_entry testing release v5.2 testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 with gcc (GCC) 8.1.0 kernel signature: 0e40c4f275f3b9698e2bebb49f83aaf2f2c861c682793205d3a552e2cbcbda00 all runs: crashed: WARNING in ext4_xattr_set_entry testing release v5.1 testing commit e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd with gcc (GCC) 8.1.0 kernel signature: 58e80b83d6ea9dae79440eb5e76bf1e2ce108bcae4d7138b8b6e124c87b8fc44 all runs: crashed: WARNING in ext4_xattr_set_entry testing release v5.0 testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 with gcc (GCC) 8.1.0 kernel signature: 9d56232dc6778736bc383ca32f8eb988284d6c41153fe5b264f87a801a393062 all runs: crashed: WARNING in ext4_xattr_set_entry testing release v4.20 testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be with gcc (GCC) 8.1.0 kernel signature: 6d44c6b8bae44e2d84053090b1587b0e3cb0fdec4b65755814e7dc998d9902cd all runs: crashed: WARNING in ext4_xattr_set_entry testing release v4.19 testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d with gcc (GCC) 8.1.0 kernel signature: 76733e2a789b976b11ed0faa492020316c75b1290b753c92c328e275164cd9ac all runs: crashed: WARNING in ext4_xattr_set_entry testing release v4.18 testing commit 94710cac0ef4ee177a63b5227664b38c95bbf703 with gcc (GCC) 8.1.0 kernel signature: d0b068347fbf0a8004912e537639224f3419afe9718e5e44f5f386e894bf4a0a all runs: crashed: WARNING in ext4_xattr_set_entry testing release v4.17 testing commit 29dcea88779c856c7dc92040a0c01233263101d4 with gcc (GCC) 8.1.0 kernel signature: 4723cd3650ad5caeeda508cd07805d5355e3bc97a26ed284c221a833e72c2815 all runs: crashed: WARNING in ext4_xattr_set_entry testing release v4.16 testing commit 0adb32858b0bddf4ada5f364a84ed60b196dbcda with gcc (GCC) 8.1.0 kernel signature: ffca1888b5f2a1f96c43dcd1a5fa14d87787d0d07851d3f3ae592314f8f3ab1a all runs: crashed: WARNING in ext4_xattr_set_entry testing release v4.15 testing commit d8a5b80568a9cb66810e75b182018e9edb68e8ff with gcc (GCC) 8.1.0 kernel signature: 9199522e43feb455858d2d9699b5c7eea3fe8fc5fe706eec5c4dc7dcfdc71420 all runs: crashed: WARNING in ext4_xattr_set_entry testing release v4.14 testing commit bebc6082da0a9f5d47a1ea2edc099bf671058bd4 with gcc (GCC) 8.1.0 kernel signature: 088b87ce7daaff5ac1b3041704ba550bf9063dd3d3404b6e56e028282a6248a2 all runs: crashed: WARNING in ext4_xattr_set_entry testing release v4.13 testing commit 569dbb88e80deb68974ef6fdd6a13edb9d686261 with gcc (GCC) 8.1.0 kernel signature: ab31d4e6ef7524ec652064a20990366e8bde377d486975cae99a6327888da5da all runs: crashed: WARNING in ext4_xattr_set_entry testing release v4.12 testing commit 6f7da290413ba713f0cdd9ff1a2a9bb129ef4f6c with gcc (GCC) 8.1.0 kernel signature: 56c8155bfaec42000a9958217fc7c23ba6cca8c9d43396e5eba421d296801117 all runs: basic kernel testing failed: BUG: sleeping function called from invalid context in tap_get_minor testing release v4.11 testing commit a351e9b9fc24e982ec2f0e76379a49826036da12 with gcc (GCC) 7.3.0 kernel signature: 1cdc67aa96f8b753e1d7d6dc289c8abf340dfb3c8d8c2de55afc5f6f201280c1 all runs: basic kernel testing failed: BUG: sleeping function called from invalid context in tap_get_minor testing release v4.10 testing commit c470abd4fde40ea6a0846a2beab642a578c0b8cd with gcc (GCC) 5.5.0 kernel signature: 3699c64e687fb3b2470c607254261b1789156bb355c088e8d47f383656685dd6 run #0: OK run #1: OK run #2: OK run #3: OK run #4: crashed: WARNING in nf_unregister_net_hook run #5: OK run #6: OK run #7: OK run #8: OK run #9: crashed: WARNING in nf_unregister_net_hook reproducer seems to be flaky testing release v4.9 testing commit 69973b830859bc6529a7a0468ba0d80ee5117826 with gcc (GCC) 5.5.0 kernel signature: 583724fb0c2f87a4aff652ea8d951be946409b9ebec458b32f88fdf22f4e84cc all runs: OK # git bisect start c470abd4fde40ea6a0846a2beab642a578c0b8cd 69973b830859bc6529a7a0468ba0d80ee5117826 Bisecting: 7099 revisions left to test after this (roughly 13 steps) [f4000cd99750065d5177555c0a805c97174d1b9f] Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux testing commit f4000cd99750065d5177555c0a805c97174d1b9f with gcc (GCC) 5.5.0 kernel signature: 7a033c0d182521a306dc7881b455e4e868b17235e34ef781bd9e578ff1697928 run #0: basic kernel testing failed: failed to copy test binary to VM: timedout ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.132:./syz-fuzzer"] run #1: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.245:./syz-fuzzer"]: exit status 1 Connection timed out during banner exchange lost connection run #2: basic kernel testing failed: failed to copy test binary to VM: timedout ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.213:./syz-fuzzer"] run #3: basic kernel testing failed: failed to copy test binary to VM: timedout ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.239:./syz-fuzzer"] run #4: boot failed: can't ssh into the instance run #5: boot failed: WARNING: unrecognized kernel stack return address ADDR at ADDR in systemd-udevd:LINE run #6: boot failed: can't ssh into the instance run #7: boot failed: can't ssh into the instance run #8: boot failed: can't ssh into the instance run #9: boot failed: can't ssh into the instance # git bisect skip f4000cd99750065d5177555c0a805c97174d1b9f Bisecting: 7099 revisions left to test after this (roughly 13 steps) [ab1effc09519f3bb4b84dd6d8276cedf07b17a1b] staging: ks7010: Add blank line after declarations testing commit ab1effc09519f3bb4b84dd6d8276cedf07b17a1b with gcc (GCC) 5.5.0 kernel signature: b30061e38b3d9006a23de4268e8d3e97cec8a1903565c56741fe01f77ce06208 run #0: OK run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: crashed: WARNING in nf_unregister_net_hook # git bisect bad ab1effc09519f3bb4b84dd6d8276cedf07b17a1b Bisecting: 141 revisions left to test after this (roughly 7 steps) [d70c509152292cd4cc741f97ce043e0f65f72689] staging:r8188eu: remove precv_frame_buf member of recv_priv structure testing commit d70c509152292cd4cc741f97ce043e0f65f72689 with gcc (GCC) 5.5.0 kernel signature: 32a7a629f9eb7b4f5ca9467e2549760be52c23fd40d8a711edf380ccfed64dd7 run #0: OK run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: crashed: WARNING in nf_unregister_net_hook run #9: crashed: WARNING in nf_unregister_net_hook # git bisect bad d70c509152292cd4cc741f97ce043e0f65f72689 Bisecting: 71 revisions left to test after this (roughly 6 steps) [c10364e1f4f6cc7e8c3f2e6a3ecb96da8769f10b] staging: rtl8188eu: core: removes unecessary parenthesis testing commit c10364e1f4f6cc7e8c3f2e6a3ecb96da8769f10b with gcc (GCC) 5.5.0 kernel signature: 7c7e4acbe7627f983c9853de9f054152c9ccf0c07184d9014f2485c75ad6a200 run #0: OK run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: crashed: WARNING in nf_unregister_net_hook # git bisect bad c10364e1f4f6cc7e8c3f2e6a3ecb96da8769f10b Bisecting: 34 revisions left to test after this (roughly 5 steps) [55554f31e97878133d8b2bdf495504e1c557081c] staging: lustre: lov: add cl_object_layout_get() testing commit 55554f31e97878133d8b2bdf495504e1c557081c with gcc (GCC) 5.5.0 kernel signature: f0b23a343af9c5ca7efd58771800cf4d9ffd967381678bcf5037f7d17278768f run #0: OK run #1: OK run #2: OK run #3: crashed: WARNING in nf_unregister_net_hook run #4: OK run #5: OK run #6: crashed: WARNING in nf_unregister_net_hook run #7: OK run #8: crashed: WARNING in nf_unregister_net_hook run #9: crashed: WARNING in nf_unregister_net_hook # git bisect bad 55554f31e97878133d8b2bdf495504e1c557081c Bisecting: 17 revisions left to test after this (roughly 4 steps) [cbd4d4a8e319050100db4e05d896cee65f011d25] staging: lustre: llite: remove duplicate fiemap defines testing commit cbd4d4a8e319050100db4e05d896cee65f011d25 with gcc (GCC) 5.5.0 kernel signature: f0b23a343af9c5ca7efd58771800cf4d9ffd967381678bcf5037f7d17278768f run #0: OK run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: crashed: WARNING in nf_unregister_net_hook run #9: OK # git bisect bad cbd4d4a8e319050100db4e05d896cee65f011d25 Bisecting: 8 revisions left to test after this (roughly 3 steps) [a2a87b224b33f30ca5172945c132e39260e95403] staging: greybus: Add blank line after declaration testing commit a2a87b224b33f30ca5172945c132e39260e95403 with gcc (GCC) 5.5.0 kernel signature: f0b23a343af9c5ca7efd58771800cf4d9ffd967381678bcf5037f7d17278768f run #0: OK run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: crashed: WARNING in nf_unregister_net_hook run #9: crashed: WARNING in nf_unregister_net_hook # git bisect bad a2a87b224b33f30ca5172945c132e39260e95403 Bisecting: 3 revisions left to test after this (roughly 2 steps) [14c681ea83adcbb33ed31c50cda1a2297bbade7e] Staging: sm750fb: use unsigned int instead unsigned testing commit 14c681ea83adcbb33ed31c50cda1a2297bbade7e with gcc (GCC) 5.5.0 kernel signature: f0b23a343af9c5ca7efd58771800cf4d9ffd967381678bcf5037f7d17278768f run #0: OK run #1: OK run #2: OK run #3: OK run #4: crashed: WARNING in nf_unregister_net_hook run #5: OK run #6: OK run #7: OK run #8: OK run #9: crashed: WARNING in nf_unregister_net_hook # git bisect bad 14c681ea83adcbb33ed31c50cda1a2297bbade7e Bisecting: 2 revisions left to test after this (roughly 1 step) [232664b386e125962682165353971fba5cb13527] staging/vchi: Update for rename of page_cache_release() to put_page(). testing commit 232664b386e125962682165353971fba5cb13527 with gcc (GCC) 5.5.0 kernel signature: f0b23a343af9c5ca7efd58771800cf4d9ffd967381678bcf5037f7d17278768f all runs: OK # git bisect good 232664b386e125962682165353971fba5cb13527 Bisecting: 0 revisions left to test after this (roughly 1 step) [9872fa751e0bad862161c442d44b7ea597e23676] Staging: sm750fb: fix do not add new typedefs warning testing commit 9872fa751e0bad862161c442d44b7ea597e23676 with gcc (GCC) 5.5.0 kernel signature: f0b23a343af9c5ca7efd58771800cf4d9ffd967381678bcf5037f7d17278768f run #0: OK run #1: OK run #2: OK run #3: OK run #4: crashed: WARNING in nf_unregister_net_hook run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect bad 9872fa751e0bad862161c442d44b7ea597e23676 Bisecting: 0 revisions left to test after this (roughly 0 steps) [e0cb35095753c038f42d1b6bf68c4cd063b3fd21] ARM: bcm2835: Add #define for VCHIQ property message. testing commit e0cb35095753c038f42d1b6bf68c4cd063b3fd21 with gcc (GCC) 5.5.0 kernel signature: f0b23a343af9c5ca7efd58771800cf4d9ffd967381678bcf5037f7d17278768f run #0: OK run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: crashed: WARNING in nf_unregister_net_hook run #7: OK run #8: crashed: WARNING in nf_unregister_net_hook run #9: OK # git bisect bad e0cb35095753c038f42d1b6bf68c4cd063b3fd21 e0cb35095753c038f42d1b6bf68c4cd063b3fd21 is the first bad commit commit e0cb35095753c038f42d1b6bf68c4cd063b3fd21 Author: Eric Anholt Date: Mon Oct 3 11:52:08 2016 -0700 ARM: bcm2835: Add #define for VCHIQ property message. This comes from the downstream tree and is needed for the new VCHIQ driver in staging. Signed-off-by: Eric Anholt Signed-off-by: Greg Kroah-Hartman include/soc/bcm2835/raspberrypi-firmware.h | 2 ++ 1 file changed, 2 insertions(+) culprit signature: f0b23a343af9c5ca7efd58771800cf4d9ffd967381678bcf5037f7d17278768f parent signature: f0b23a343af9c5ca7efd58771800cf4d9ffd967381678bcf5037f7d17278768f Reproducer flagged being flaky revisions tested: 34, total time: 5h43m51.877777289s (build: 2h34m44.875711276s, test: 3h4m48.781470303s) first bad commit: e0cb35095753c038f42d1b6bf68c4cd063b3fd21 ARM: bcm2835: Add #define for VCHIQ property message. recipients (to): ["bcm-kernel-feedback-list@broadcom.com" "eric@anholt.net" "eric@anholt.net" "f.fainelli@gmail.com" "gregkh@linuxfoundation.org" "lee@kernel.org" "linux-arm-kernel@lists.infradead.org" "linux-rpi-kernel@lists.infradead.org" "rjui@broadcom.com" "sbranden@broadcom.com" "swarren@wwwdotorg.org"] recipients (cc): ["linux-kernel@vger.kernel.org"] crash: WARNING in nf_unregister_net_hook bond0 (unregistering): Releasing backup interface bond_slave_1 bond0 (unregistering): Releasing backup interface bond_slave_0 bond0 (unregistering): Released all slaves ------------[ cut here ]------------ WARNING: CPU: 1 PID: 3078 at net/netfilter/core.c:151 nf_unregister_net_hook+0x28a/0x3c0 net/netfilter/core.c:151 nf_unregister_net_hook: hook not found! Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 3078 Comm: kworker/u4:4 Not tainted 4.9.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net ffff880132bdf890 ffffffff82eb2882 ffffffff86a7ff00 ffff880132bdf968 ffffffff87689a00 ffffffff857fb47a 0000000000000009 ffff880132bdf958 ffffffff815f8cb2 0000000041b58ab3 ffffffff87c387e8 ffffffff815f8afc Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0x136/0x1d4 lib/dump_stack.c:51 [] panic+0x1b6/0x358 kernel/panic.c:179 [] __warn+0x18d/0x1b0 kernel/panic.c:542 [] warn_slowpath_fmt+0x92/0xb0 kernel/panic.c:565 [] nf_unregister_net_hook+0x28a/0x3c0 net/netfilter/core.c:151 [] nf_unregister_hook_list net/netfilter/core.c:484 [inline] [] netfilter_net_exit+0x36/0xa0 net/netfilter/core.c:516 [] ops_exit_list.isra.0+0x8e/0x120 net/core/net_namespace.c:136 [] cleanup_net+0x2d0/0x570 net/core/net_namespace.c:449 [] process_one_work+0x67d/0x14d0 kernel/workqueue.c:2096 [] worker_thread+0xe1/0x1050 kernel/workqueue.c:2230 [] kthread+0x20e/0x2d0 kernel/kthread.c:209 [] ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:433 Kernel Offset: disabled