bisecting cause commit starting from 6d21a41b7b1f46d5d5c3ddc26b55c5c4a6a826b9 building syzkaller on 1656845f45f284c574eb4f8bfe85dd7916a47a3a testing commit 6d21a41b7b1f46d5d5c3ddc26b55c5c4a6a826b9 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in make_kuid testing release v5.2 testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 with gcc (GCC) 8.1.0 all runs: OK # git bisect start 6d21a41b7b1f46d5d5c3ddc26b55c5c4a6a826b9 v5.2 Bisecting: 7135 revisions left to test after this (roughly 13 steps) [ef8f3d48afd6a17a0dae8c277c2f539c2f19fd16] Merge branch 'akpm' (patches from Andrew) testing commit ef8f3d48afd6a17a0dae8c277c2f539c2f19fd16 with gcc (GCC) 8.1.0 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 send_hsr_supervision_frame # git bisect bad ef8f3d48afd6a17a0dae8c277c2f539c2f19fd16 Bisecting: 3941 revisions left to test after this (roughly 12 steps) [8f6ccf6159aed1f04c6d179f61f6fb2691261e84] Merge tag 'clone3-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux testing commit 8f6ccf6159aed1f04c6d179f61f6fb2691261e84 with gcc (GCC) 8.1.0 all runs: OK # git bisect good 8f6ccf6159aed1f04c6d179f61f6fb2691261e84 Bisecting: 1954 revisions left to test after this (roughly 11 steps) [f7623d340794620ac8d933477cc265be77c78fe5] Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next testing commit f7623d340794620ac8d933477cc265be77c78fe5 with gcc (GCC) 8.1.0 all runs: OK # git bisect good f7623d340794620ac8d933477cc265be77c78fe5 Bisecting: 1158 revisions left to test after this (roughly 10 steps) [97ff4ca46d3279134cec49752de8c5a62dc68460] Merge tag 'char-misc-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc testing commit 97ff4ca46d3279134cec49752de8c5a62dc68460 with gcc (GCC) 8.1.0 all runs: OK # git bisect good 97ff4ca46d3279134cec49752de8c5a62dc68460 Bisecting: 579 revisions left to test after this (roughly 9 steps) [23a4388f24f5356fa0bef07911c7b4fbc97619ac] staging: android: ion: Remove file ion_chunk_heap.c testing commit 23a4388f24f5356fa0bef07911c7b4fbc97619ac with gcc (GCC) 8.1.0 all runs: OK # git bisect good 23a4388f24f5356fa0bef07911c7b4fbc97619ac Bisecting: 261 revisions left to test after this (roughly 8 steps) [8931084c0d017314ad025f19353f7c5c1d3782d8] Merge tag 'mmc-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc testing commit 8931084c0d017314ad025f19353f7c5c1d3782d8 with gcc (GCC) 8.1.0 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 send_hsr_supervision_frame # git bisect bad 8931084c0d017314ad025f19353f7c5c1d3782d8 Bisecting: 163 revisions left to test after this (roughly 7 steps) [2bc8bb813cba6e699b29fd0b30720288866a5e5d] Merge tag 'usb-ci-v5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-next testing commit 2bc8bb813cba6e699b29fd0b30720288866a5e5d with gcc (GCC) 8.1.0 all runs: OK # git bisect good 2bc8bb813cba6e699b29fd0b30720288866a5e5d Bisecting: 94 revisions left to test after this (roughly 6 steps) [35a4ed0164e992c9c7b82eb1370081a292131904] tty: serial: fsl_lpuart: add imx8qxp support testing commit 35a4ed0164e992c9c7b82eb1370081a292131904 with gcc (GCC) 8.1.0 all runs: OK # git bisect good 35a4ed0164e992c9c7b82eb1370081a292131904 Bisecting: 47 revisions left to test after this (roughly 6 steps) [cb3a7d4a0aec4e56043d6433724e0606d6b6efba] mmc: sdhci-pci: Add support for Intel EHL testing commit cb3a7d4a0aec4e56043d6433724e0606d6b6efba with gcc (GCC) 8.1.0 all runs: OK # git bisect good cb3a7d4a0aec4e56043d6433724e0606d6b6efba Bisecting: 23 revisions left to test after this (roughly 5 steps) [a47a70c25777ac06c9d2e09030377cfee851edee] staging: rtl8723bs: Remove rtw_btcoex_ScanNotify() testing commit a47a70c25777ac06c9d2e09030377cfee851edee with gcc (GCC) 8.1.0 all runs: OK # git bisect good a47a70c25777ac06c9d2e09030377cfee851edee Bisecting: 11 revisions left to test after this (roughly 4 steps) [d72619706abc4aa7e540ea882dae883cee7cc3b3] Merge tag 'tty-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty testing commit d72619706abc4aa7e540ea882dae883cee7cc3b3 with gcc (GCC) 8.1.0 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: general protection fault in send_hsr_supervision_frame run #9: crashed: general protection fault in send_hsr_supervision_frame # git bisect bad d72619706abc4aa7e540ea882dae883cee7cc3b3 Bisecting: 5 revisions left to test after this (roughly 3 steps) [14c77a18375db381426d3a0e6e7aaf87af9a8143] staging: rtl8723bs: Change return type of hal_btcoex_IsBtDisabled() testing commit 14c77a18375db381426d3a0e6e7aaf87af9a8143 with gcc (GCC) 8.1.0 all runs: OK # git bisect good 14c77a18375db381426d3a0e6e7aaf87af9a8143 Bisecting: 2 revisions left to test after this (roughly 2 steps) [a50d99d40199db24e0c321457bd3da2df107dd71] staging: kpc2000: simplify comparison to NULL in dma.c testing commit a50d99d40199db24e0c321457bd3da2df107dd71 with gcc (GCC) 8.1.0 all runs: OK # git bisect good a50d99d40199db24e0c321457bd3da2df107dd71 Bisecting: 0 revisions left to test after this (roughly 1 step) [e786741ff1b52769b044b7f4407f39cd13ee5d2d] Merge tag 'staging-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging testing commit e786741ff1b52769b044b7f4407f39cd13ee5d2d with gcc (GCC) 8.1.0 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 send_hsr_supervision_frame # git bisect bad e786741ff1b52769b044b7f4407f39cd13ee5d2d Bisecting: 0 revisions left to test after this (roughly 0 steps) [5d1532482943403eb11911898565628fa45863d7] staging: kpc2000: simplify comparison to NULL in fileops.c testing commit 5d1532482943403eb11911898565628fa45863d7 with gcc (GCC) 8.1.0 all runs: OK # git bisect good 5d1532482943403eb11911898565628fa45863d7 e786741ff1b52769b044b7f4407f39cd13ee5d2d is the first bad commit revisions tested: 17, total time: 4h35m10.071026356s (build: 1h38m15.898581078s, test: 2h51m11.489966376s) first bad commit: e786741ff1b52769b044b7f4407f39cd13ee5d2d Merge tag 'staging-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging cc: ["allison@lohutok.net" "davem@davemloft.net" "gregkh@linuxfoundation.org" "jic23@kernel.org" "knaack.h@gmx.de" "kstewart@linuxfoundation.org" "lars@metafoo.de" "linus.walleij@linaro.org" "linux-iio@vger.kernel.org" "linux-kernel@vger.kernel.org" "mchehab+samsung@kernel.org" "nicolas.ferre@microchip.com" "paulmck@linux.ibm.com" "pmeerw@pmeerw.net" "rfontana@redhat.com" "tglx@linutronix.de" "torvalds@linux-foundation.org"] crash: general protection fault in send_hsr_supervision_frame 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 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.2.0+ #1 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:send_hsr_supervision_frame+0x30/0xf60 /net/hsr/hsr_device.c:255 Code: 89 e5 41 57 41 56 41 55 49 89 fd 41 54 41 89 d4 48 89 c2 53 48 c1 ea 03 48 83 ec 50 48 89 45 d0 48 b8 00 00 00 00 00 fc ff df <80> 3c 02 00 89 75 c8 0f 85 83 0c 00 00 48 b8 00 00 00 00 00 fc ff RSP: 0018:ffff8880aeb09c68 EFLAGS: 00010282 RAX: dffffc0000000000 RBX: ffff88807af10c80 RCX: ffffffff815756a4 RDX: 0000000000000002 RSI: 0000000000000017 RDI: 0000000000000000 RBP: ffff8880aeb09ce0 R08: ffffed1015d66c84 R09: ffffed1015d66c83 R10: ffffed1015d66c83 R11: ffff8880aeb3641b R12: 0000000000000000 R13: 0000000000000000 R14: ffff8880aeb09db8 R15: ffff8880aeb24b80 FS: 0000000000000000(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5a5da87000 CR3: 000000009c15c000 CR4: 00000000001406e0 Call Trace: hsr_announce+0xd9/0x2b0 /net/hsr/hsr_device.c:339 call_timer_fn+0x14d/0x510 /kernel/time/timer.c:1322 expire_timers /kernel/time/timer.c:1366 [inline] __run_timers /kernel/time/timer.c:1685 [inline] run_timer_softirq+0xc6f/0x1330 /kernel/time/timer.c:1698 __do_softirq+0x262/0x931 /kernel/softirq.c:292 invoke_softirq /kernel/softirq.c:373 [inline] irq_exit+0x17f/0x1c0 /kernel/softirq.c:413 exiting_irq /./arch/x86/include/asm/apic.h:537 [inline] smp_apic_timer_interrupt+0x174/0x590 /arch/x86/kernel/apic/apic.c:1095 apic_timer_interrupt+0xf/0x20 /arch/x86/entry/entry_64.S:828 RIP: 0010:native_safe_halt+0x12/0x20 /./arch/x86/include/asm/irqflags.h:61 Code: 11 ff ff ff 4c 89 e7 e8 dc cd ed fa eb 97 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 e9 07 00 00 00 0f 00 2d 10 b9 5b 00 fb f4 <5d> c3 66 90 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 e9 07 00 00 RSP: 0018:ffff8880a98dfd70 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: ffff8880a98cc340 RCX: 0000000000000000 RDX: 1ffffffff1065005 RSI: 0000000000000006 RDI: ffffffff88328028 RBP: ffff8880a98dfd70 R08: 0000000000000006 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: ffffffff88328018 R14: 0000000000000001 R15: ffffffff88f7abf8 arch_safe_halt /./arch/x86/include/asm/paravirt.h:156 [inline] default_idle+0x51/0x310 /arch/x86/kernel/process.c:580 arch_cpu_idle+0xa/0x10 /arch/x86/kernel/process.c:571 default_idle_call+0x6d/0x90 /kernel/sched/idle.c:94 cpuidle_idle_call /kernel/sched/idle.c:154 [inline] do_idle+0x3e4/0x590 /kernel/sched/idle.c:263 cpu_startup_entry+0x18/0x20 /kernel/sched/idle.c:354 start_secondary+0x2fe/0x3f0 /arch/x86/kernel/smpboot.c:264 secondary_startup_64+0xa4/0xb0 /arch/x86/kernel/head_64.S:243 Modules linked in: ---[ end trace 5726562828fea4d2 ]--- RIP: 0010:send_hsr_supervision_frame+0x30/0xf60 /net/hsr/hsr_device.c:255 Code: 89 e5 41 57 41 56 41 55 49 89 fd 41 54 41 89 d4 48 89 c2 53 48 c1 ea 03 48 83 ec 50 48 89 45 d0 48 b8 00 00 00 00 00 fc ff df <80> 3c 02 00 89 75 c8 0f 85 83 0c 00 00 48 b8 00 00 00 00 00 fc ff RSP: 0018:ffff8880aeb09c68 EFLAGS: 00010282 RAX: dffffc0000000000 RBX: ffff88807af10c80 RCX: ffffffff815756a4 RDX: 0000000000000002 RSI: 0000000000000017 RDI: 0000000000000000 RBP: ffff8880aeb09ce0 R08: ffffed1015d66c84 R09: ffffed1015d66c83 R10: ffffed1015d66c83 R11: ffff8880aeb3641b R12: 0000000000000000 R13: 0000000000000000 R14: ffff8880aeb09db8 R15: ffff8880aeb24b80 FS: 0000000000000000(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5a5da87000 CR3: 000000009c15c000 CR4: 00000000001406e0