bisecting cause commit starting from d96d875ef5dd372f533059a44f98e92de9cf0d42 building syzkaller on 8eda0b957e5b39c0c525e74f51d6b39ab8c5b1ac testing commit d96d875ef5dd372f533059a44f98e92de9cf0d42 with gcc (GCC) 8.1.0 kernel signature: 4442f3703558f4f2aa700505b7370fca6bad4e93 all runs: crashed: WARNING in __xlate_proc_name testing release v5.4 testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 with gcc (GCC) 8.1.0 kernel signature: 95c5231a8cea8a5602a629f6bba44573509de9bb all runs: crashed: WARNING in __xlate_proc_name testing release v5.3 testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 with gcc (GCC) 8.1.0 kernel signature: e30f92623edbc9eb8ed6f7811485c3b4c5129fe8 all runs: crashed: WARNING in __xlate_proc_name testing release v5.2 testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 with gcc (GCC) 8.1.0 kernel signature: c8552123925e9ddef7ce17ed50ff1811c9caf2b5 all runs: crashed: WARNING in __xlate_proc_name testing release v5.1 testing commit e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd with gcc (GCC) 8.1.0 kernel signature: eef6342b216361e2b56b96f700a9f3382124f18c all runs: crashed: WARNING in __xlate_proc_name testing release v5.0 testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 with gcc (GCC) 8.1.0 kernel signature: 92368cbb4d0718e4eaa678d2f30da245109cb82c all runs: crashed: WARNING in __xlate_proc_name testing release v4.20 testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be with gcc (GCC) 8.1.0 kernel signature: a299a22691911993c2a12b2bac8f3d0ada3dd707 all runs: crashed: WARNING in __xlate_proc_name testing release v4.19 testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d with gcc (GCC) 8.1.0 kernel signature: 1fe6cec6cea92f41612d2e7b9b4433fda677af6b all runs: crashed: WARNING in __xlate_proc_name testing release v4.18 testing commit 94710cac0ef4ee177a63b5227664b38c95bbf703 with gcc (GCC) 8.1.0 kernel signature: 9e1feb32e2b410354bb735cabfee390aeeddf72f all runs: crashed: WARNING in __xlate_proc_name testing release v4.17 testing commit 29dcea88779c856c7dc92040a0c01233263101d4 with gcc (GCC) 8.1.0 kernel signature: bc529fcbb7adabf926c9035a61fc82162b817301 all runs: crashed: WARNING in __xlate_proc_name testing release v4.16 testing commit 0adb32858b0bddf4ada5f364a84ed60b196dbcda with gcc (GCC) 8.1.0 kernel signature: f233d54d0f162ebb0abd0e1c37de9460a1a0f2f1 all runs: crashed: WARNING in __xlate_proc_name testing release v4.15 testing commit d8a5b80568a9cb66810e75b182018e9edb68e8ff with gcc (GCC) 8.1.0 kernel signature: b66f053fcd08fd8f76758fe1ca2226cdcb2d8e02 all runs: crashed: WARNING in __xlate_proc_name testing release v4.14 testing commit bebc6082da0a9f5d47a1ea2edc099bf671058bd4 with gcc (GCC) 8.1.0 kernel signature: 140b94e88ec42c4b8f765d16fbe4dbbee28db031 all runs: OK # git bisect start d8a5b80568a9cb66810e75b182018e9edb68e8ff bebc6082da0a9f5d47a1ea2edc099bf671058bd4 Bisecting: 8497 revisions left to test after this (roughly 13 steps) [5d352e69c60e54b5f04d6e337a1d2bf0dbf3d94a] Merge tag 'media/v4.15-1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media testing commit 5d352e69c60e54b5f04d6e337a1d2bf0dbf3d94a with gcc (GCC) 8.1.0 kernel signature: f4f494e0329be0d5f4134cb2fd82a1ae8b9a7ae6 all runs: OK # git bisect good 5d352e69c60e54b5f04d6e337a1d2bf0dbf3d94a Bisecting: 3900 revisions left to test after this (roughly 12 steps) [f6705bf959efac87bca76d40050d342f1d212587] Merge tag 'drm-for-v4.15-amd-dc' of git://people.freedesktop.org/~airlied/linux testing commit f6705bf959efac87bca76d40050d342f1d212587 with gcc (GCC) 8.1.0 kernel signature: a3fbd2b8392a7bddabd1e90291d2a00e6c79368a all runs: crashed: WARNING in __xlate_proc_name # git bisect bad f6705bf959efac87bca76d40050d342f1d212587 Bisecting: 2234 revisions left to test after this (roughly 11 steps) [8c609698569578913ad40bb160b97c3f6cfa15ec] Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc testing commit 8c609698569578913ad40bb160b97c3f6cfa15ec with gcc (GCC) 8.1.0 kernel signature: fcacb74857f0d181f7386f519c52f231e9f11f0a failed: failed to create VM pool: failed to create GCE image: create image operation failed: &{Code:INTERNAL_ERROR Location: Message:Internal error. Please try again or contact Google Support. (Code: '6499213975071958362') ForceSendFields:[] NullFields:[]}. # git bisect skip 8c609698569578913ad40bb160b97c3f6cfa15ec Bisecting: 2234 revisions left to test after this (roughly 11 steps) [ea6767337f86312ebe473585899a159bf50ef1b7] f2fs: support quota sys files testing commit ea6767337f86312ebe473585899a159bf50ef1b7 with gcc (GCC) 8.1.0 kernel signature: 8ecc55717959d441f37b5ff8f20aba975dac5cad all runs: OK # git bisect good ea6767337f86312ebe473585899a159bf50ef1b7 Bisecting: 2234 revisions left to test after this (roughly 11 steps) [80793e0d7f3e443341f810bb0056ace14a0e2500] ARM: dts: owl-s500-guitar-bb-rev-b: Add fake uart3 clock testing commit 80793e0d7f3e443341f810bb0056ace14a0e2500 with gcc (GCC) 8.1.0 kernel signature: b511841f66b11f9eb706465a38ee351afe20d11d all runs: OK # git bisect good 80793e0d7f3e443341f810bb0056ace14a0e2500 Bisecting: 2232 revisions left to test after this (roughly 11 steps) [7da2ed12da2c81b782ee4c3b4b0b87098048aae8] arm64: dts: renesas: ulcb: Enable display output testing commit 7da2ed12da2c81b782ee4c3b4b0b87098048aae8 with gcc (GCC) 8.1.0 kernel signature: 4c221ecd08e767b3899e4c72358b074cb9afffe8 all runs: OK # git bisect good 7da2ed12da2c81b782ee4c3b4b0b87098048aae8 Bisecting: 2228 revisions left to test after this (roughly 11 steps) [a19331ca517764d30eb9b6e84561b7142abc3e09] ARM: dts: aspeed: Clean up UART nodes testing commit a19331ca517764d30eb9b6e84561b7142abc3e09 with gcc (GCC) 8.1.0 kernel signature: b50e4a5dbf6b6c306c2fb40f76f257486d3f9985 all runs: OK # git bisect good a19331ca517764d30eb9b6e84561b7142abc3e09 Bisecting: 2219 revisions left to test after this (roughly 11 steps) [24a0d8538ed36ae08d8009bd4a46c6eb36d92bd1] amdgpu/dc: add static to construct function testing commit 24a0d8538ed36ae08d8009bd4a46c6eb36d92bd1 with gcc (GCC) 8.1.0 kernel signature: 6d45fae9caccd96d61828ccd4990e77c72355fab all runs: OK # git bisect good 24a0d8538ed36ae08d8009bd4a46c6eb36d92bd1 Bisecting: 1716 revisions left to test after this (roughly 11 steps) [5b0e2cb020085efe202123162502e0b551e49a0e] Merge tag 'powerpc-4.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux testing commit 5b0e2cb020085efe202123162502e0b551e49a0e with gcc (GCC) 8.1.0 kernel signature: 61bc7377f3761b52e6d173aa064b5b92061a3ac9 all runs: crashed: WARNING in __xlate_proc_name # git bisect bad 5b0e2cb020085efe202123162502e0b551e49a0e Bisecting: 880 revisions left to test after this (roughly 10 steps) [3b677e43c1191de4717357ffeb85a30b967045e4] Merge tag 'drm/tegra/for-4.15-rc1' of git://anongit.freedesktop.org/tegra/linux into drm-next testing commit 3b677e43c1191de4717357ffeb85a30b967045e4 with gcc (GCC) 8.1.0 kernel signature: 5e063ad1c7331607681f1121ab2734324062fe17 all runs: OK # git bisect good 3b677e43c1191de4717357ffeb85a30b967045e4 Bisecting: 436 revisions left to test after this (roughly 9 steps) [b9743042b3d31fed271ae19aee79dd86817904f0] Merge tag 'driver-core-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core testing commit b9743042b3d31fed271ae19aee79dd86817904f0 with gcc (GCC) 8.1.0 kernel signature: 5024eab0f32df2ad9874f92940c860a58c61b883 all runs: OK # git bisect good b9743042b3d31fed271ae19aee79dd86817904f0 Bisecting: 220 revisions left to test after this (roughly 8 steps) [b630a23a731a436f9edbd9fa00739aaa3e174c15] Merge tag 'pinctrl-v4.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl testing commit b630a23a731a436f9edbd9fa00739aaa3e174c15 with gcc (GCC) 8.1.0 kernel signature: db9888c1cd8ce32a8304fb3680d43d1a54d9b23e 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: boot failed: can't ssh into the instance # git bisect good b630a23a731a436f9edbd9fa00739aaa3e174c15 Bisecting: 109 revisions left to test after this (roughly 7 steps) [0b2f5a8a792755c88bd786f89712a9fac9967b2b] powerpc/64s/radix: Improve TLB flushing for page table freeing testing commit 0b2f5a8a792755c88bd786f89712a9fac9967b2b with gcc (GCC) 8.1.0 kernel signature: 11a15ced8cff4bf084c65c590a6c9ac25f3d14af all runs: OK # git bisect good 0b2f5a8a792755c88bd786f89712a9fac9967b2b Bisecting: 50 revisions left to test after this (roughly 6 steps) [a02cd4229e298aadbe8f5cf286edee8058d87116] Merge tag 'f2fs-for-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs testing commit a02cd4229e298aadbe8f5cf286edee8058d87116 with gcc (GCC) 8.1.0 kernel signature: 2903af5899bc470d713d68acd7e3f71040a5804b all runs: crashed: WARNING in __xlate_proc_name # git bisect bad a02cd4229e298aadbe8f5cf286edee8058d87116 Bisecting: 29 revisions left to test after this (roughly 5 steps) [2c099014a0a456012c1778e80adce839bf956b77] afs: Trace the sending of pages testing commit 2c099014a0a456012c1778e80adce839bf956b77 with gcc (GCC) 8.1.0 kernel signature: 5cf3f4278c53a03052269dc922972a2b7f755c6a all runs: crashed: WARNING in __xlate_proc_name # git bisect bad 2c099014a0a456012c1778e80adce839bf956b77 Bisecting: 14 revisions left to test after this (roughly 4 steps) [33cd7f2b76717ac8dda566d8b4f518e803ae2618] afs: Potentially return call->reply[0] from afs_make_call() testing commit 33cd7f2b76717ac8dda566d8b4f518e803ae2618 with gcc (GCC) 8.1.0 kernel signature: 9022e67539f3cc162939b549820b02891a6ed1dd all runs: OK # git bisect good 33cd7f2b76717ac8dda566d8b4f518e803ae2618 Bisecting: 7 revisions left to test after this (roughly 3 steps) [8b2a464ced77fe35be72ab7d38152a9439daf8d3] afs: Add an address list concept testing commit 8b2a464ced77fe35be72ab7d38152a9439daf8d3 with gcc (GCC) 8.1.0 kernel signature: 85fb745051460126a47db6da555f8be0836b5d07 all runs: crashed: WARNING in __xlate_proc_name # git bisect bad 8b2a464ced77fe35be72ab7d38152a9439daf8d3 Bisecting: 2 revisions left to test after this (roughly 2 steps) [c435ee34551e1f5a02a253ca8e235287efd2727c] afs: Overhaul the callback handling testing commit c435ee34551e1f5a02a253ca8e235287efd2727c with gcc (GCC) 8.1.0 kernel signature: 3649726a2f247665b6a03c2b732ecfd2d4494a70 run #0: OK run #1: OK run #2: OK run #3: OK run #4: OK run #5: crashed: general protection fault in batadv_iv_ogm_queue_add run #6: OK run #7: OK run #8: OK run #9: crashed: general protection fault in batadv_iv_ogm_queue_add # git bisect bad c435ee34551e1f5a02a253ca8e235287efd2727c Bisecting: 1 revision left to test after this (roughly 1 step) [03dc2cfca536df89f4b1747caad9324c9be482fa] afs: Fix the afs_uuid struct to make the char-sized fields signed testing commit 03dc2cfca536df89f4b1747caad9324c9be482fa with gcc (GCC) 8.1.0 kernel signature: 33861a439d7f7ebbbdf588abea3a130a19449646 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: general protection fault in batadv_iv_ogm_queue_add # git bisect bad 03dc2cfca536df89f4b1747caad9324c9be482fa Bisecting: 0 revisions left to test after this (roughly 0 steps) [f4b3526d83c40dd8bf5948b9d7a1b2c340f0dcc8] afs: Connect up the CB.ProbeUuid testing commit f4b3526d83c40dd8bf5948b9d7a1b2c340f0dcc8 with gcc (GCC) 8.1.0 kernel signature: d398f1d6be07aac0d468cc4f8bb19c260c39befd 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: general protection fault in batadv_iv_ogm_queue_add # git bisect bad f4b3526d83c40dd8bf5948b9d7a1b2c340f0dcc8 f4b3526d83c40dd8bf5948b9d7a1b2c340f0dcc8 is the first bad commit commit f4b3526d83c40dd8bf5948b9d7a1b2c340f0dcc8 Author: David Howells Date: Thu Nov 2 15:27:48 2017 +0000 afs: Connect up the CB.ProbeUuid The handler for the CB.ProbeUuid operation in the cache manager is implemented, but isn't listed in the switch-statement of operation selection, so won't be used. Fix this by adding it. Signed-off-by: David Howells fs/afs/cmservice.c | 3 +++ 1 file changed, 3 insertions(+) culprit signature: d398f1d6be07aac0d468cc4f8bb19c260c39befd parent signature: 9022e67539f3cc162939b549820b02891a6ed1dd revisions tested: 33, total time: 8h40m44.909327452s (build: 3h13m25.716625648s, test: 5h24m17.065646148s) first bad commit: f4b3526d83c40dd8bf5948b9d7a1b2c340f0dcc8 afs: Connect up the CB.ProbeUuid cc: ["dhowells@redhat.com" "linux-afs@lists.infradead.org" "linux-kernel@vger.kernel.org"] crash: general protection fault in batadv_iv_ogm_queue_add bridge0: port 1(bridge_slave_0) entered disabled state batman_adv: batadv0: Interface deactivated: batadv_slave_0 batman_adv: batadv0: Removing interface: batadv_slave_0 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 1 PID: 5 Comm: kworker/u4:0 Not tainted 4.14.0-rc8-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet task: ffff88012b06e140 task.stack: ffff88012b080000 RIP: 0010:batadv_iv_ogm_queue_add+0xdf/0x1100 net/batman-adv/bat_iv_ogm.c:772 RSP: 0018:ffff88012b086f00 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88012b087128 RCX: ffff880124be9a40 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: ffff88012b087150 R08: ffff880124be9a40 R09: 0000000000000001 R10: ffffed0025610e6a R11: ffff88012b06e140 R12: 000000000000003c R13: ffff88011c2da2c0 R14: dffffc0000000000 R15: ffffed0025610e6a FS: 0000000000000000(0000) GS:ffff88012c100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000556abc51c518 CR3: 0000000108b0b000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: batadv_iv_ogm_schedule+0xcc0/0x10b0 net/batman-adv/bat_iv_ogm.c:976 batadv_iv_send_outstanding_bat_ogm_packet+0x576/0xa30 net/batman-adv/bat_iv_ogm.c:1803 process_one_work+0x9c3/0x1a40 kernel/workqueue.c:2112 worker_thread+0x212/0x18f0 kernel/workqueue.c:2246 kthread+0x338/0x400 kernel/kthread.c:231 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:432 Code: f2 c7 40 20 f2 f2 f2 f2 c7 40 24 00 f2 f2 f2 c7 40 28 f2 f2 f2 f2 c7 40 2c 00 f2 f2 f2 c7 40 30 f3 f3 f3 f3 48 89 f8 48 c1 e8 03 <0f> b6 04 10 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 c1 0c 00 RIP: batadv_iv_ogm_queue_add+0xdf/0x1100 net/batman-adv/bat_iv_ogm.c:772 RSP: ffff88012b086f00 ---[ end trace f17a23e0d11c4b93 ]---