ci2 starts bisection 2024-04-08 12:31:27.603118783 +0000 UTC m=+109.634158543 bisecting fixing commit since 21c71a7d0e9611af47f97e4323cf8cff5e75ae05 building syzkaller on 9bd8dcda8c7c494d59bd3132a668f4784ea835c6 ensuring issue is reproducible on original commit 21c71a7d0e9611af47f97e4323cf8cff5e75ae05 testing commit 21c71a7d0e9611af47f97e4323cf8cff5e75ae05 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 597d26633425e876b174bcf2cd8d7715aa044dc662e375f1dc0c212edb6d879b all runs: crashed: BUG: unable to handle kernel paging request in bpf_probe_read_compat_str representative crash: BUG: unable to handle kernel paging request in bpf_probe_read_compat_str, types: [UNKNOWN] check whether we can drop unnecessary instrumentation disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit 21c71a7d0e9611af47f97e4323cf8cff5e75ae05 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 230a1fd73d81614343b059fa7b5483fcef7e9b1d90c81caf8fb9157c9045c434 all runs: crashed: BUG: unable to handle kernel paging request in bpf_probe_read_compat_str representative crash: BUG: unable to handle kernel paging request in bpf_probe_read_compat_str, types: [UNKNOWN] the bug reproduces without the instrumentation disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed kconfig minimization: base=5179 full=6493 leaves diff=255 split chunks (needed=false): <255> split chunk #0 of len 255 into 5 parts testing without sub-chunk 1/5 disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 21c71a7d0e9611af47f97e4323cf8cff5e75ae05 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2ea522651c8fbffeb00cdcd1c8491794d79699425ae60c70e23486ce0a364cf7 run #0: crashed: BUG: unable to handle kernel paging request in bpf_probe_read_compat_str run #1: crashed: BUG: unable to handle kernel paging request in bpf_probe_read_compat_str run #2: crashed: BUG: unable to handle kernel paging request in bpf_probe_read_compat_str run #3: crashed: BUG: unable to handle kernel paging request in bpf_probe_read_compat_str run #4: crashed: BUG: unable to handle kernel paging request in bpf_probe_read_compat_str run #5: crashed: BUG: unable to handle kernel paging request in bpf_probe_read_compat_str run #6: crashed: BUG: unable to handle kernel paging request in bpf_probe_read_compat_str run #7: crashed: BUG: unable to handle kernel paging request in bpf_probe_read_compat_str run #8: crashed: BUG: unable to handle kernel paging request in bpf_probe_read_compat_str run #9: boot failed: can't ssh into the instance representative crash: BUG: unable to handle kernel paging request in bpf_probe_read_compat_str, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit 21c71a7d0e9611af47f97e4323cf8cff5e75ae05 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 944d1e4ea90ed1ad788630c3347580aed178dc2d9a894f7ba037269c0e88a60b all runs: crashed: BUG: unable to handle kernel paging request in bpf_probe_read_compat_str representative crash: BUG: unable to handle kernel paging request in bpf_probe_read_compat_str, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 21c71a7d0e9611af47f97e4323cf8cff5e75ae05 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 32946847600121b897734c06140dd9284959f4f2d6a0c31d04d28985f692bfea all runs: crashed: BUG: unable to handle kernel paging request in bpf_probe_read_compat_str representative crash: BUG: unable to handle kernel paging request in bpf_probe_read_compat_str, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 21c71a7d0e9611af47f97e4323cf8cff5e75ae05 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 98c4799fe031f38cd3e93972775fe742b82fd6804b0fe67c163b70b9148030ea all runs: crashed: BUG: unable to handle kernel paging request in bpf_probe_read_compat_str representative crash: BUG: unable to handle kernel paging request in bpf_probe_read_compat_str, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 21c71a7d0e9611af47f97e4323cf8cff5e75ae05 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building 21c71a7d0e9611af47f97e4323cf8cff5e75ae05: net/socket.c:1242: undefined reference to `wext_handle_ioctl' net/socket.c:3437: undefined reference to `compat_wext_handle_ioctl' net/core/net-procfs.c:329: undefined reference to `wext_proc_init' net/core/net-procfs.c:345: undefined reference to `wext_proc_exit' minimized to 51 configs; suspects: [HID_ZEROPLUS USB_NET_DM9601 USB_NET_GL620A USB_NET_MCS7830 USB_NET_NET1080 USB_NET_PLUSB USB_NET_RNDIS_HOST USB_NET_SMSC75XX USB_NET_SMSC95XX USB_NET_SR9700 USB_NET_SR9800 USB_NET_ZAURUS USB_OHCI_HCD USB_OHCI_HCD_PCI USB_OHCI_HCD_PLATFORM USB_OTG USB_OTG_FSM USB_PRINTER USB_SERIAL_GENERIC USB_SERIAL_PL2303 USB_STORAGE_ALAUDA USB_STORAGE_CYPRESS_ATACB USB_STORAGE_DATAFAB USB_STORAGE_FREECOM USB_STORAGE_ISD200 USB_STORAGE_JUMPSHOT USB_STORAGE_KARMA USB_STORAGE_ONETOUCH USB_STORAGE_SDDR09 USB_STORAGE_SDDR55 USB_STORAGE_USBAT USB_TRANCEVIBRATOR USB_U_AUDIO USB_U_ETHER USB_U_SERIAL USB_WDM V4L2_ASYNC V4L2_FWNODE VIDEO_CAMERA_SENSOR WLAN WLAN_VENDOR_ATH WLAN_VENDOR_ATMEL WLAN_VENDOR_BROADCOM WLAN_VENDOR_INTERSIL WLAN_VENDOR_MARVELL WLAN_VENDOR_MEDIATEK WLAN_VENDOR_MICROCHIP WLAN_VENDOR_PURELIFI WLAN_VENDOR_RALINK WLAN_VENDOR_REALTEK WLAN_VENDOR_RSI WLAN_VENDOR_SILABS WLAN_VENDOR_ZYDAS X86_X32_ABI ZEROPLUS_FF] disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing current HEAD 60534eef47392cc95ccb87f9f7466e90c7d6a666 testing commit 60534eef47392cc95ccb87f9f7466e90c7d6a666 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 20ca53a7df98d96ab9189eace329d7dc50a0a2c3475fd40a75d7a02e7daa2e77 all runs: crashed: BUG: unable to handle kernel paging request in bpf_probe_read_compat_str representative crash: BUG: unable to handle kernel paging request in bpf_probe_read_compat_str, types: [UNKNOWN] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 3h3m55.712649954s (build: 58m59.83538746s, test: 26m2.233736498s) crash still not fixed or there were kernel test errors commit msg: UPSTREAM: ALSA: virtio: Fix "Coverity: virtsnd_kctl_tlv_op(): Uninitialized variables" warning. crash: BUG: unable to handle kernel paging request in bpf_probe_read_compat_str BUG: unable to handle page fault for address: ffffffffff600000 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 300e067 P4D 300e067 PUD 3010067 PMD 3012067 PTE 0 Oops: 0000 [#1] PREEMPT SMP CPU: 0 PID: 355 Comm: syz-executor.0 Not tainted 6.1.75-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:strncpy_from_kernel_nofault+0x42/0x80 mm/maccess.c:91 Code: 89 f7 48 89 d6 e8 6e 59 dc ff 89 c1 48 c7 c0 de ff ff ff 84 c9 74 33 65 48 8b 35 f9 53 ce 7e ff 86 58 0b 00 00 31 c0 48 89 c2 <41> 8a 0c 07 41 88 0c 16 48 8d 42 01 84 c9 74 05 48 39 d8 7c e8 ff RSP: 0018:ffffc90000797b58 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 0000000000000008 RCX: 00000000ff600001 RDX: 0000000000000000 RSI: ffff888108bfdf00 RDI: ffffffffff600000 RBP: ffffc90000797b70 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000145 R12: 0000000000000000 R13: ffff888108bfdf00 R14: ffffc90000797ba8 R15: ffffffffff600000 FS: 00007f18fae8b6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600000 CR3: 00000001160c7000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bpf_probe_read_kernel_str_common kernel/trace/bpf_trace.c:265 [inline] ____bpf_probe_read_compat_str kernel/trace/bpf_trace.c:313 [inline] bpf_probe_read_compat_str+0x60/0x90 kernel/trace/bpf_trace.c:306 bpf_prog_f17ebaf3f5f7baf8+0x3a/0x3c bpf_dispatcher_nop_func include/linux/bpf.h:987 [inline] __bpf_prog_run include/linux/filter.h:600 [inline] bpf_prog_run include/linux/filter.h:607 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2275 [inline] bpf_trace_run4+0x59/0xd0 kernel/trace/bpf_trace.c:2316 __bpf_trace_sched_switch+0xe/0x10 include/trace/events/sched.h:222 trace_sched_switch include/trace/events/sched.h:222 [inline] __schedule+0x634/0x6e0 kernel/sched/core.c:6726 preempt_schedule_common+0x20/0x90 kernel/sched/core.c:6898 preempt_schedule+0x52/0x60 kernel/sched/core.c:6922 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34 try_to_wake_up+0x326/0x580 kernel/sched/core.c:4378 wake_up_process kernel/sched/core.c:4506 [inline] wake_up_q+0x53/0x90 kernel/sched/core.c:1030 futex_wake+0x106/0x370 kernel/futex/waitwake.c:188 do_futex+0x146/0x230 kernel/futex/syscalls.c:113 __do_sys_futex kernel/futex/syscalls.c:185 [inline] __se_sys_futex+0x140/0x180 kernel/futex/syscalls.c:166 __x64_sys_futex+0x24/0x30 kernel/futex/syscalls.c:166 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f18fa07cda9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f18fae8b178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00007f18fa1abf88 RCX: 00007f18fa07cda9 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f18fa1abf8c RBP: 00007f18fa1abf80 R08: 00007ffe9ad160b0 R09: 00007f18fae8b6c0 R10: 0000000000000004 R11: 0000000000000246 R12: 00007f18fa1abf8c R13: 000000000000000b R14: 00007ffe9ace3770 R15: 00007ffe9ace3858 Modules linked in: CR2: ffffffffff600000 ---[ end trace 0000000000000000 ]--- RIP: 0010:strncpy_from_kernel_nofault+0x42/0x80 mm/maccess.c:91 Code: 89 f7 48 89 d6 e8 6e 59 dc ff 89 c1 48 c7 c0 de ff ff ff 84 c9 74 33 65 48 8b 35 f9 53 ce 7e ff 86 58 0b 00 00 31 c0 48 89 c2 <41> 8a 0c 07 41 88 0c 16 48 8d 42 01 84 c9 74 05 48 39 d8 7c e8 ff RSP: 0018:ffffc90000797b58 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 0000000000000008 RCX: 00000000ff600001 RDX: 0000000000000000 RSI: ffff888108bfdf00 RDI: ffffffffff600000 RBP: ffffc90000797b70 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000145 R12: 0000000000000000 R13: ffff888108bfdf00 R14: ffffc90000797ba8 R15: ffffffffff600000 FS: 00007f18fae8b6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600000 CR3: 00000001160c7000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 89 f7 mov %esi,%edi 2: 48 89 d6 mov %rdx,%rsi 5: e8 6e 59 dc ff call 0xffdc5978 a: 89 c1 mov %eax,%ecx c: 48 c7 c0 de ff ff ff mov $0xffffffffffffffde,%rax 13: 84 c9 test %cl,%cl 15: 74 33 je 0x4a 17: 65 48 8b 35 f9 53 ce mov %gs:0x7ece53f9(%rip),%rsi # 0x7ece5418 1e: 7e 1f: ff 86 58 0b 00 00 incl 0xb58(%rsi) 25: 31 c0 xor %eax,%eax 27: 48 89 c2 mov %rax,%rdx * 2a: 41 8a 0c 07 mov (%r15,%rax,1),%cl <-- trapping instruction 2e: 41 88 0c 16 mov %cl,(%r14,%rdx,1) 32: 48 8d 42 01 lea 0x1(%rdx),%rax 36: 84 c9 test %cl,%cl 38: 74 05 je 0x3f 3a: 48 39 d8 cmp %rbx,%rax 3d: 7c e8 jl 0x27 3f: ff .byte 0xff