bisecting cause commit starting from 065b6c4c913d3986c2118acb7e7fb364ce4fb625 building syzkaller on 12365b99ce83b8a58433eaedbe412dff563ef8fb testing commit 065b6c4c913d3986c2118acb7e7fb364ce4fb625 with gcc (GCC) 8.1.0 run #0: crashed: kernel BUG at arch/x86/mm/physaddr.c:LINE! run #1: crashed: INFO: rcu detected stall in netlink_sendmsg run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK testing release v5.0 testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 with gcc (GCC) 8.1.0 all runs: OK # git bisect start 065b6c4c913d3986c2118acb7e7fb364ce4fb625 v5.0 Bisecting: 5130 revisions left to test after this (roughly 12 steps) [542d0e583b7b366527175b2b5fc0aad262fa33b0] Merge tag 'devprop-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm testing commit 542d0e583b7b366527175b2b5fc0aad262fa33b0 with gcc (GCC) 8.1.0 run #0: crashed: WARNING: locking bug in __icmp_send run #1: crashed: INFO: trying to register non-static key in __icmp_send run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect bad 542d0e583b7b366527175b2b5fc0aad262fa33b0 Bisecting: 2598 revisions left to test after this (roughly 11 steps) [18a4d8bf250a33c015955f0dec27259780ef6448] Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net testing commit 18a4d8bf250a33c015955f0dec27259780ef6448 with gcc (GCC) 8.1.0 all runs: OK # git bisect good 18a4d8bf250a33c015955f0dec27259780ef6448 Bisecting: 1257 revisions left to test after this (roughly 10 steps) [203b6609e0ede49eb0b97008b1150c69e9d2ffd3] Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip testing commit 203b6609e0ede49eb0b97008b1150c69e9d2ffd3 with gcc (GCC) 8.1.0 all runs: OK # git bisect good 203b6609e0ede49eb0b97008b1150c69e9d2ffd3 Bisecting: 579 revisions left to test after this (roughly 9 steps) [6ad63dec9c2c80710896edd1996e56c54a230870] Merge tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc testing commit 6ad63dec9c2c80710896edd1996e56c54a230870 with gcc (GCC) 8.1.0 run #0: crashed: INFO: rcu detected stall in netlink_sendmsg 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: OK # git bisect bad 6ad63dec9c2c80710896edd1996e56c54a230870 Bisecting: 338 revisions left to test after this (roughly 8 steps) [1228c051bab1ac3d16df93a738696bfa87837606] Merge tag 'tegra-for-5.1-arm64-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/dt testing commit 1228c051bab1ac3d16df93a738696bfa87837606 with gcc (GCC) 8.1.0 all runs: OK # git bisect good 1228c051bab1ac3d16df93a738696bfa87837606 Bisecting: 167 revisions left to test after this (roughly 7 steps) [0fe8f1e5bbc5aecd51e62307ffb82ec11de79190] Merge tag 'am654-for-v5.1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kristo/linux into HEAD testing commit 0fe8f1e5bbc5aecd51e62307ffb82ec11de79190 with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in __bfs run #1: crashed: INFO: rcu detected stall in netlink_sendmsg run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect bad 0fe8f1e5bbc5aecd51e62307ffb82ec11de79190 Bisecting: 87 revisions left to test after this (roughly 7 steps) [89081095a22ebe29cdd8e4a3d12ae69388fd14b4] Merge tag 'imx-bindings-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into arm/dt testing commit 89081095a22ebe29cdd8e4a3d12ae69388fd14b4 with gcc (GCC) 8.1.0 run #0: crashed: kernel BUG at arch/x86/mm/physaddr.c:LINE! 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: OK # git bisect bad 89081095a22ebe29cdd8e4a3d12ae69388fd14b4 Bisecting: 44 revisions left to test after this (roughly 5 steps) [260bcbb319a8e3fb85fb93edb2d5d320412ac7e1] Merge tag 'mvebu-dt-5.1-1' of git://git.infradead.org/linux-mvebu into arm/dt testing commit 260bcbb319a8e3fb85fb93edb2d5d320412ac7e1 with gcc (GCC) 8.1.0 all runs: OK # git bisect good 260bcbb319a8e3fb85fb93edb2d5d320412ac7e1 Bisecting: 27 revisions left to test after this (roughly 5 steps) [99f0619b0d0d87f921b05f0b7e43ff2e080a4fcc] ARM: dts: meson8b: ec100: add the GPIO line names testing commit 99f0619b0d0d87f921b05f0b7e43ff2e080a4fcc with gcc (GCC) 8.1.0 all runs: OK # git bisect good 99f0619b0d0d87f921b05f0b7e43ff2e080a4fcc Bisecting: 13 revisions left to test after this (roughly 4 steps) [148423b7454b6f2cee71e2c43aee99ab24acb434] dt-bindings: arm: amlogic: add amediatech x96-max bindings testing commit 148423b7454b6f2cee71e2c43aee99ab24acb434 with gcc (GCC) 8.1.0 run #0: crashed: INFO: rcu detected stall in netlink_sendmsg run #1: crashed: INFO: rcu detected stall in netlink_sendmsg run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect bad 148423b7454b6f2cee71e2c43aee99ab24acb434 Bisecting: 6 revisions left to test after this (roughly 3 steps) [5ca872c530e5fd8ae24c999d4bc103bc1c8ac6af] arm64: dts: meson: s400: enable sdr104 on sdio testing commit 5ca872c530e5fd8ae24c999d4bc103bc1c8ac6af with gcc (GCC) 8.1.0 all runs: OK # git bisect good 5ca872c530e5fd8ae24c999d4bc103bc1c8ac6af Bisecting: 3 revisions left to test after this (roughly 2 steps) [503f5fed1c52f0c0e4c25f5d386c4e426285bffe] arm64: dts: meson: fix g12a buses testing commit 503f5fed1c52f0c0e4c25f5d386c4e426285bffe with gcc (GCC) 8.1.0 run #0: crashed: INFO: rcu detected stall in netlink_sendmsg 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: OK # git bisect bad 503f5fed1c52f0c0e4c25f5d386c4e426285bffe Bisecting: 0 revisions left to test after this (roughly 1 step) [9ab2d15ce1c392602a4ae062746b3d9ab5cf47ec] arm64: dts: meson-axg: add efuse device testing commit 9ab2d15ce1c392602a4ae062746b3d9ab5cf47ec with gcc (GCC) 8.1.0 run #0: crashed: INFO: rcu detected stall in netlink_sendmsg 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: OK # git bisect bad 9ab2d15ce1c392602a4ae062746b3d9ab5cf47ec Bisecting: 0 revisions left to test after this (roughly 0 steps) [ec01fb69ac8034ad6e839b31f9df167a110f868b] arm64: dts: meson: s400: fix emmc maximum rate testing commit ec01fb69ac8034ad6e839b31f9df167a110f868b with gcc (GCC) 8.1.0 run #0: crashed: BUG: unable to handle kernel paging request in free_block 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: OK # git bisect bad ec01fb69ac8034ad6e839b31f9df167a110f868b ec01fb69ac8034ad6e839b31f9df167a110f868b is the first bad commit commit ec01fb69ac8034ad6e839b31f9df167a110f868b Author: Jerome Brunet Date: Wed Jan 16 18:59:47 2019 +0100 arm64: dts: meson: s400: fix emmc maximum rate Limiting the HS200 rate on the s400 was just a way to mask that the tuning setting were not correct. This seems to have been fixed with the recent MMC driver update. We can now use HS200 at full speed. Signed-off-by: Jerome Brunet Signed-off-by: Kevin Hilman arch/arm64/boot/dts/amlogic/meson-axg-s400.dts | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) revisions tested: 16, total time: 3h55m55.670324551s (build: 1h22m50.204648675s, test: 2h29m59.845550425s) first bad commit: ec01fb69ac8034ad6e839b31f9df167a110f868b arm64: dts: meson: s400: fix emmc maximum rate cc: ["devicetree@vger.kernel.org" "jbrunet@baylibre.com" "khilman@baylibre.com" "linux-amlogic@lists.infradead.org" "linux-arm-kernel@lists.infradead.org" "linux-kernel@vger.kernel.org" "mark.rutland@arm.com" "robh+dt@kernel.org"] crash: BUG: unable to handle kernel paging request in free_block Enabling of bearer rejected, already enabled Enabling of bearer rejected, already enabled Enabling of bearer rejected, already enabled Enabling of bearer rejected, already enabled Enabling of bearer rejected, already enabled BUG: unable to handle kernel paging request at ffff88812aed8ffc #PF error: [WRITE] PGD a801067 P4D a801067 PUD 0 Oops: 0002 [#1] PREEMPT SMP KASAN CPU: 0 PID: 7001 Comm: kworker/0:4 Not tainted 5.0.0-rc1+ #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014 Workqueue: events cache_reap Enabling of bearer rejected, already enabled RIP: 0010:slab_put_obj mm/slab.c:2613 [inline] RIP: 0010:free_block+0x14c/0x260 mm/slab.c:3405 Code: 41 0f b6 4d 1c 48 c1 ee 20 29 f0 d3 e8 41 0f b6 4d 1d 01 f0 49 8b 77 20 d3 e8 8d 4f ff 48 85 f6 41 89 4f 30 0f 84 fe 00 00 00 <88> 04 0e 41 8b 47 30 85 c0 0f 84 f4 fe ff ff 49 8b 4e 40 4c 89 e7 RSP: 0018:ffff888023e77c28 EFLAGS: 00010082 RAX: 0000000000000001 RBX: ffffe8ffaea65c10 RCX: 00000000ffffffff RDX: ffff88802aed83b8 RSI: ffff88802aed8ffd RDI: 0000000000000000 RBP: ffff888023e77c78 R08: 0000000000abb600 R09: 0000000000000000 R10: ffffed10047cef84 R11: 0000000000000003 R12: ffffea0000abb608 R13: ffff88807a8ec000 R14: ffff888029788500 R15: ffffea0000abb600 FS: 0000000000000000(0000) GS:ffff88802d800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff88812aed8ffc CR3: 000000001cc9c000 CR4: 00000000007406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Enabling of bearer rejected, already enabled DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 Call Trace: drain_array_locked+0x35/0x90 mm/slab.c:2195 drain_array+0x8a/0xb0 mm/slab.c:4009 cache_reap+0xf2/0x280 mm/slab.c:4050 process_one_work+0x835/0x1670 kernel/workqueue.c:2153 worker_thread+0x85/0xb60 kernel/workqueue.c:2296 kthread+0x327/0x3f0 kernel/kthread.c:246 Enabling of bearer rejected, already enabled ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Modules linked in: CR2: ffff88812aed8ffc ---[ end trace 51ec653830909265 ]--- RIP: 0010:slab_put_obj mm/slab.c:2613 [inline] RIP: 0010:free_block+0x14c/0x260 mm/slab.c:3405 Code: 41 0f b6 4d 1c 48 c1 ee 20 29 f0 d3 e8 41 0f b6 4d 1d 01 f0 49 8b 77 20 d3 e8 8d 4f ff 48 85 f6 41 89 4f 30 0f 84 fe 00 00 00 <88> 04 0e 41 8b 47 30 85 c0 0f 84 f4 fe ff ff 49 8b 4e 40 4c 89 e7 RSP: 0018:ffff888023e77c28 EFLAGS: 00010082 RAX: 0000000000000001 RBX: ffffe8ffaea65c10 RCX: 00000000ffffffff RDX: ffff88802aed83b8 RSI: ffff88802aed8ffd RDI: 0000000000000000 RBP: ffff888023e77c78 R08: 0000000000abb600 R09: 0000000000000000 R10: ffffed10047cef84 R11: 0000000000000003 R12: ffffea0000abb608 R13: ffff88807a8ec000 R14: ffff888029788500 R15: ffffea0000abb600 FS: 0000000000000000(0000) GS:ffff88802d800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Enabling of bearer rejected, already enabled CR2: ffff88812aed8ffc CR3: 000000001cc9c000 CR4: 00000000007406f0 Enabling of bearer rejected, already enabled DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554