ci starts bisection 2022-08-02 18:54:39.138511175 +0000 UTC m=+25778.076151719 bisecting fixing commit since d1dc87763f406d4e67caf16dbe438a5647692395 building syzkaller on 5783034f220fa03dd9407034a4804be5890c3377 testing commit d1dc87763f406d4e67caf16dbe438a5647692395 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 1e9b21d95f0286c787314a47017128d7141c081bf32c75bdff4af74bf5cf9a02 run #0: crashed: general protection fault in __device_attach run #1: crashed: general protection fault in __device_attach run #2: crashed: general protection fault in __device_attach run #3: crashed: general protection fault in __device_attach run #4: crashed: general protection fault in __device_attach run #5: crashed: general protection fault in __device_attach run #6: crashed: general protection fault in __device_attach run #7: crashed: general protection fault in __device_attach run #8: crashed: general protection fault in __device_attach run #9: crashed: general protection fault in __device_attach run #10: crashed: general protection fault in __device_attach run #11: crashed: general protection fault in __device_attach run #12: crashed: general protection fault in __device_attach run #13: crashed: general protection fault in __device_attach run #14: crashed: general protection fault in __device_attach run #15: crashed: general protection fault in __device_attach run #16: crashed: general protection fault in __device_attach run #17: crashed: general protection fault in __device_attach run #18: crashed: general protection fault in __device_attach run #19: OK testing current HEAD c1dbe9a1c86da098a29dcdca1a67b65e2de7ec3a testing commit c1dbe9a1c86da098a29dcdca1a67b65e2de7ec3a compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 14733e2548637397185922da7f046771647eec3f4e31176ef906d8a02c1b7de3 all runs: crashed: general protection fault in __device_attach revisions tested: 2, total time: 29m30.700976788s (build: 13m49.925699903s, test: 14m56.447393268s) the crash still happens on HEAD commit msg: Merge tag 'thermal-5.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm crash: general protection fault in __device_attach usb usb9: device_add((null)) --> -22 general protection fault, probably for non-canonical address 0xdffffc0000000021: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000108-0x000000000000010f] CPU: 1 PID: 10132 Comm: syz-executor.0 Not tainted 5.19.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 RIP: 0010:__device_attach+0xa4/0x440 drivers/base/dd.c:965 Code: e8 03 42 80 3c 20 00 0f 85 3e 03 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 65 48 49 8d bc 24 08 01 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 06 0f 8e fa 02 00 00 41 f6 84 24 08 01 00 00 RSP: 0018:ffffc9000513fba0 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 1ffff92000a27f74 RCX: 0000000000000000 RDX: 0000000000000021 RSI: ffffffff890bbf00 RDI: 0000000000000108 RBP: ffff888078cb3030 R08: 0000000000000000 R09: ffffffff8ceb0b97 R10: fffffbfff19d6172 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888078cb30b0 R15: 00000000fffffff0 FS: 00007f0950f24700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0950f23d38 CR3: 0000000021fb7000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: proc_ioctl.part.0+0x36e/0x430 drivers/usb/core/devio.c:2356 proc_ioctl drivers/usb/core/devio.c:182 [inline] proc_ioctl_default drivers/usb/core/devio.c:2391 [inline] usbdev_do_ioctl drivers/usb/core/devio.c:2747 [inline] usbdev_ioctl+0x21bc/0x2ee0 drivers/usb/core/devio.c:2807 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x11f/0x190 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f094fe89109 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0950f24168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f094ff9bf60 RCX: 00007f094fe89109 RDX: 0000000020000040 RSI: 00000000c0105512 RDI: 0000000000000005 RBP: 00007f094fee308d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffeeda497f R14: 00007f0950f24300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__device_attach+0xa4/0x440 drivers/base/dd.c:965 Code: e8 03 42 80 3c 20 00 0f 85 3e 03 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 65 48 49 8d bc 24 08 01 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 06 0f 8e fa 02 00 00 41 f6 84 24 08 01 00 00 RSP: 0018:ffffc9000513fba0 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 1ffff92000a27f74 RCX: 0000000000000000 RDX: 0000000000000021 RSI: ffffffff890bbf00 RDI: 0000000000000108 RBP: ffff888078cb3030 R08: 0000000000000000 R09: ffffffff8ceb0b97 R10: fffffbfff19d6172 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888078cb30b0 R15: 00000000fffffff0 FS: 00007f0950f24700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f094ff9d090 CR3: 0000000021fb7000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: e8 03 42 80 3c callq 0x3c804208 5: 20 00 and %al,(%rax) 7: 0f 85 3e 03 00 00 jne 0x34b d: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 14: fc ff df 17: 4c 8b 65 48 mov 0x48(%rbp),%r12 1b: 49 8d bc 24 08 01 00 lea 0x108(%r12),%rdi 22: 00 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 74 06 je 0x38 32: 0f 8e fa 02 00 00 jle 0x332 38: 41 rex.B 39: f6 .byte 0xf6 3a: 84 24 08 test %ah,(%rax,%rcx,1) 3d: 01 00 add %eax,(%rax)