ci2 starts bisection 2025-08-21 11:46:49.911131767 +0000 UTC m=+76383.629082538 bisecting fixing commit since d96eb99e2f0e32b6d29e7f12a790b08c08825503 building syzkaller on 7117feecc9626dc60b06fb3e91c0f7632d99d30b ensuring issue is reproducible on original commit d96eb99e2f0e32b6d29e7f12a790b08c08825503 testing commit d96eb99e2f0e32b6d29e7f12a790b08c08825503 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 9d91202e5599a87c9efdef7a10f8f5870d298d2f415131af3669c45c8f984cfe all runs: crashed: BUG: unable to handle kernel paging request in bpf_prog_ADDR representative crash: BUG: unable to handle kernel paging request in bpf_prog_ADDR, types: [MEMORY_SAFETY_BUG] check whether we can drop unnecessary instrumentation disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed testing commit d96eb99e2f0e32b6d29e7f12a790b08c08825503 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: ca3b620be5a4729e650a43fd5838c1974b9487d4b5dd0a51d18228d3f6d1a942 all runs: crashed: BUG: unable to handle kernel paging request in bpf_prog_ADDR representative crash: BUG: unable to handle kernel paging request in bpf_prog_ADDR, types: [MEMORY_SAFETY_BUG] the bug reproduces without the instrumentation disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed kconfig minimization: base=3913 full=7800 leaves diff=2160 split chunks (needed=false): <2160> split chunk #0 of len 2160 into 5 parts testing without sub-chunk 1/5 disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed testing commit d96eb99e2f0e32b6d29e7f12a790b08c08825503 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: ac84f6fc94ddcd6ad872190bda3fd1b261ba42f133d7114f43fd5a6576e29e68 all runs: crashed: BUG: unable to handle kernel paging request in ___bpf_prog_run representative crash: BUG: unable to handle kernel paging request in ___bpf_prog_run, types: [MEMORY_SAFETY_BUG] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [ubsan kasan locking atomic_sleep hang memleak], they are not needed testing commit d96eb99e2f0e32b6d29e7f12a790b08c08825503 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 7341c440357bf7bd0b840e4cc06811eefa1064b1b48b776f0c71861cf90107a6 all runs: crashed: BUG: unable to handle kernel paging request in ___bpf_prog_run representative crash: BUG: unable to handle kernel paging request in ___bpf_prog_run, types: [MEMORY_SAFETY_BUG] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed testing commit d96eb99e2f0e32b6d29e7f12a790b08c08825503 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: e82624274050c95f55b4bbef7e4e43c47f6945500f0b3051e6fad4db2ebd8a6a all runs: crashed: BUG: unable to handle kernel paging request in ___bpf_prog_run representative crash: BUG: unable to handle kernel paging request in ___bpf_prog_run, types: [MEMORY_SAFETY_BUG] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [memleak ubsan kasan locking atomic_sleep hang], they are not needed testing commit d96eb99e2f0e32b6d29e7f12a790b08c08825503 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: a03002919fb9a6877c0ed234727981ae22c33770306f21eef803335cd9104717 all runs: crashed: BUG: unable to handle kernel paging request in ___bpf_prog_run representative crash: BUG: unable to handle kernel paging request in ___bpf_prog_run, types: [MEMORY_SAFETY_BUG] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed testing commit d96eb99e2f0e32b6d29e7f12a790b08c08825503 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: b78d6fd6c2e6b0de68fb05c286507f108a467ee5a6a0993ac2ac0f968192e14c all runs: OK false negative chance: 0.000 minimized to 432 configs; suspects: [ARCH_ENABLE_MEMORY_HOTREMOVE ATM BCMA BLK_DEV_ZONED BPF_SYSCALL CARDBUS CFG80211 CFG80211_WEXT CMA COMMON_CLK CONTIG_ALLOC CRYPTO_842 CRYPTO_LZ4 CRYPTO_LZ4HC CRYPTO_LZO CRYPTO_ZSTD DVB_CORE EXTCON FB GPIOLIB HID_ZEROPLUS I2C_MUX IIO IOMMUFD IRQ_REMAP KVM KVM_INTEL LIBNVDIMM MEDIA_ANALOG_TV_SUPPORT MEDIA_CAMERA_SUPPORT MEDIA_CEC_SUPPORT MEDIA_CONTROLLER MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_TEST_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_VIPERBOARD NOP_USB_XCEIV PARPORT PCCARD PCMCIA PHONET RADIO_ADAPTERS RADIO_SI470X RADIO_SI4713 RC_CORE RFKILL SND SOUND SPI SSB TAP TARGET_CORE TUN USB_AMD5536UDC USB_ATM USB_BELKIN USB_C67X00_HCD USB_CATC USB_CDC_PHONET USB_CDNS2_UDC USB_CDNS3 USB_CDNS3_GADGET USB_CDNS3_HOST USB_CDNS3_PCI_WRAP USB_CDNSP_GADGET USB_CDNSP_HOST USB_CDNSP_PCI USB_CDNS_HOST USB_CDNS_SUPPORT USB_CHAOSKEY USB_CHIPIDEA USB_CHIPIDEA_GENERIC USB_CHIPIDEA_HOST USB_CHIPIDEA_MSM USB_CHIPIDEA_PCI USB_CHIPIDEA_UDC USB_CONFIGFS USB_CONFIGFS_ACM USB_CONFIGFS_ECM USB_CONFIGFS_ECM_SUBSET USB_CONFIGFS_EEM USB_CONFIGFS_F_FS USB_CONFIGFS_F_HID USB_CONFIGFS_F_LB_SS USB_CONFIGFS_F_MIDI USB_CONFIGFS_F_MIDI2 USB_CONFIGFS_F_PRINTER USB_CONFIGFS_F_TCM USB_CONFIGFS_F_UAC1 USB_CONFIGFS_F_UAC1_LEGACY USB_CONFIGFS_F_UAC2 USB_CONFIGFS_F_UVC USB_CONFIGFS_MASS_STORAGE USB_CONFIGFS_NCM USB_CONFIGFS_OBEX USB_CONFIGFS_PHONET USB_CONFIGFS_RNDIS USB_CONFIGFS_SERIAL USB_CONN_GPIO 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USB_SERIAL_DEBUG USB_SERIAL_DIGI_ACCELEPORT USB_SERIAL_EDGEPORT USB_SERIAL_EDGEPORT_TI USB_SERIAL_EMPEG USB_SERIAL_F81232 USB_SERIAL_F8153X USB_SERIAL_FTDI_SIO USB_SERIAL_GARMIN USB_SERIAL_GENERIC USB_SERIAL_IPAQ USB_SERIAL_IPW USB_SERIAL_IR USB_SERIAL_IUU USB_SERIAL_KEYSPAN USB_SERIAL_KEYSPAN_PDA USB_SERIAL_KLSI USB_SERIAL_KOBIL_SCT USB_SERIAL_MCT_U232 USB_SERIAL_METRO USB_SERIAL_MOS7715_PARPORT USB_SERIAL_MOS7720 USB_SERIAL_MOS7840 USB_SERIAL_MXUPORT USB_SERIAL_NAVMAN USB_SERIAL_OMNINET USB_SERIAL_OPTICON USB_SERIAL_OPTION USB_SERIAL_OTI6858 USB_SERIAL_PL2303 USB_SERIAL_QCAUX USB_SERIAL_QT2 USB_SERIAL_QUALCOMM USB_SERIAL_SAFE USB_SERIAL_SIERRAWIRELESS USB_SERIAL_SIMPLE USB_SERIAL_SPCP8X5 USB_SERIAL_SSU100 USB_SERIAL_SYMBOL USB_SERIAL_TI USB_SERIAL_UPD78F0730 USB_SERIAL_VISOR USB_SERIAL_WHITEHEAT USB_SERIAL_WISHBONE USB_SERIAL_WWAN USB_SERIAL_XR USB_SERIAL_XSENS_MT USB_SEVSEG USB_SI470X USB_SI4713 USB_SIERRA_NET USB_SISUSBVGA USB_SL811_CS USB_SL811_HCD USB_SL811_HCD_ISO USB_SNP_CORE USB_SPEEDTOUCH USB_STORAGE_ALAUDA USB_STORAGE_CYPRESS_ATACB USB_STORAGE_DATAFAB USB_STORAGE_ENE_UB6250 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_STV06XX USB_TEST USB_TMC USB_TRANCEVIBRATOR USB_UAS USB_UEAGLEATM USB_ULPI_BUS USB_USBNET USB_USS720 USB_U_AUDIO USB_U_ETHER USB_U_SERIAL USB_VIDEO_CLASS USB_VIDEO_CLASS_INPUT_EVDEV USB_VL600 USB_WDM USB_XHCI_DBGCAP USB_XHCI_PCI_RENESAS USB_XHCI_PLATFORM USB_XUSBATM USB_YUREX USERFAULTFD USERIO USERMODE_DRIVER USER_RETURN_NOTIFIER UVC_COMMON U_SERIAL_CONSOLE V4L2_MEM2MEM_DEV V4L_TEST_DRIVERS VALIDATE_FS_PARSER VDPA VDPA_SIM VDPA_SIM_BLOCK VDPA_SIM_NET VDPA_USER VETH VFIO VFIO_DEVICE_CDEV VFIO_PCI VFIO_PCI_CORE VFIO_PCI_INTX VFIO_PCI_MMAP VFIO_VIRQFD VGASTATE VHOST VHOST_CROSS_ENDIAN_LEGACY VHOST_IOTLB VHOST_NET VHOST_RING VHOST_TASK VHOST_VDPA VHOST_VSOCK VIDEOBUF2_CORE VIDEOBUF2_DMA_CONTIG VIDEOBUF2_DMA_SG VIDEOBUF2_MEMOPS VIDEOBUF2_V4L2 VIDEOBUF2_VMALLOC VIDEOMODE_HELPERS VIDEO_AU0828 VIDEO_AU0828_RC VIDEO_AU0828_V4L2 VIDEO_CMDLINE VIDEO_CS53L32A VIDEO_CX231XX VIDEO_CX231XX_ALSA VIDEO_CX231XX_DVB VIDEO_CX231XX_RC VIDEO_CX2341X VIDEO_CX25840 VIDEO_DEV VIDEO_EM28XX VIDEO_EM28XX_ALSA VIDEO_EM28XX_DVB VIDEO_EM28XX_RC VIDEO_EM28XX_V4L2 VIDEO_GO7007 VIDEO_GO7007_LOADER VIDEO_GO7007_USB VIDEO_GO7007_USB_S2250_BOARD VIDEO_HDPVR VIDEO_MSP3400 VIDEO_NOMODESET VIDEO_PVRUSB2 VIDEO_PVRUSB2_DVB VIDEO_PVRUSB2_SYSFS VIDEO_SAA711X VIDEO_STK1160 VIDEO_TUNER VIDEO_TVEEPROM VIDEO_USBTV VIDEO_V4L2_I2C VIDEO_V4L2_SUBDEV_API VIDEO_V4L2_TPG VIDEO_VICODEC VIDEO_VIM2M VIDEO_VIMC VIDEO_VIVID VIDEO_VIVID_CEC VIDEO_WM8775 VIPERBOARD_ADC VIRTIO_BALLOON VIRTIO_DMA_SHARED_BUFFER VIRTIO_MEM VIRTIO_MMIO VIRTIO_MMIO_CMDLINE_DEVICES VIRTIO_PMEM VIRTIO_VDPA VIRTIO_VSOCKETS VIRTIO_VSOCKETS_COMMON VIRT_WIFI VLAN_8021Q VLAN_8021Q_GVRP VLAN_8021Q_MVRP VMAP_PFN VMWARE_VMCI VMXNET3 VP_VDPA VSOCKETS VSOCKETS_DIAG VSOCKETS_LOOPBACK VSOCKMON VT_HW_CONSOLE_BINDING VXFS_FS WANT_DEV_COREDUMP WEXT_CORE WEXT_PRIV WEXT_PROC WIREGUARD WIRELESS WIRELESS_EXT WLAN WLAN_VENDOR_ADMTEK WLAN_VENDOR_SILABS X86_SGX X86_SGX_KVM X86_USER_SHADOW_STACK X86_X2APIC XARRAY_MULTI XDP_SOCKETS XDP_SOCKETS_DIAG XFRM_ESPINTCP XFRM_INTERFACE XFRM_IPCOMP XFRM_MIGRATE XFRM_OFFLOAD XFRM_STATISTICS XFRM_SUB_POLICY XFRM_USER_COMPAT XFS_FS XFS_POSIX_ACL XFS_QUOTA XFS_RT XILLYBUS_CLASS XILLYUSB XOR_BLOCKS YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZBUD ZEROPLUS_FF ZLIB_DEFLATE ZONEFS_FS ZPOOL ZRAM ZRAM_DEF_COMP_LZORLE ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_LZO ZSWAP_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZBUD] disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed testing current HEAD bb9c90ab9c5a1a933a0dfd302a3fde73642b2b06 testing commit bb9c90ab9c5a1a933a0dfd302a3fde73642b2b06 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 8de7905b3406802e5ebbda5398faed59d0cbf77bb870eb9cf4ddddcdf26431e7 all runs: crashed: BUG: unable to handle kernel paging request in ___bpf_prog_run representative crash: BUG: unable to handle kernel paging request in ___bpf_prog_run, types: [MEMORY_SAFETY_BUG] crash still not fixed/happens on the oldest tested release revisions tested: 8, total time: 1h34m15.200735355s (build: 49m34.978999233s, test: 33m29.004410781s) crash still not fixed or there were kernel test errors commit msg: Linux 6.6.102 crash: BUG: unable to handle kernel paging request in ___bpf_prog_run BUG: unable to handle page fault for address: 000000001311da40 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 114263067 P4D 114263067 PUD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 0 PID: 3897 Comm: syz.2.16 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:___bpf_prog_run+0x1b58/0x24e0 kernel/bpf/core.c:2086 Code: 04 11 49 83 c7 08 41 0f b6 07 89 c6 ff 24 c5 00 eb ec 82 f3 0f 1e fa 41 0f b6 47 01 89 c1 c1 e9 04 48 8b 0c cb 49 0f bf 57 02 <0f> b7 0c 11 83 e0 0f 48 89 0c c3 49 83 c7 08 41 0f b6 07 89 c6 ff RSP: 0018:ffffc9000177fc08 EFLAGS: 00010202 RAX: 0000000000000026 RBX: ffffc9000177fc30 RCX: 000000001311da40 RDX: 0000000000000000 RSI: 0000000000000069 RDI: ffffc9000177fc30 RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000004f R10: 0000000000000001 R11: ffffffff826000d0 R12: 0000000000004068 R13: ffff8881145dc800 R14: ffffc90000fe9048 R15: ffffc90000fe90d0 FS: 00007ff7d4eef6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000001311da40 CR3: 000000011444d000 CR4: 00000000003506f0 Call Trace: __bpf_prog_run32+0xbb/0xe0 kernel/bpf/core.c:2212 bpf_dispatcher_nop_func include/linux/bpf.h:1213 [inline] __bpf_prog_run include/linux/filter.h:612 [inline] bpf_prog_run include/linux/filter.h:619 [inline] bpf_test_run+0x22c/0x310 net/bpf/test_run.c:424 bpf_prog_test_run_skb+0x3bc/0x540 net/bpf/test_run.c:1050 bpf_prog_test_run+0xdd/0x100 kernel/bpf/syscall.c:4123 __sys_bpf+0x2a5/0x560 kernel/bpf/syscall.c:5485 __do_sys_bpf kernel/bpf/syscall.c:5571 [inline] __se_sys_bpf kernel/bpf/syscall.c:5569 [inline] __x64_sys_bpf+0x17/0x20 kernel/bpf/syscall.c:5569 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7ff7d547e9a9 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff7d4eef038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007ff7d56a5fa0 RCX: 00007ff7d547e9a9 RDX: 000000000000004c RSI: 00002000000011c0 RDI: 000000000000000a RBP: 00007ff7d5500d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ff7d56a5fa0 R15: 00007ffc2a056aa8 Modules linked in: CR2: 000000001311da40 ---[ end trace 0000000000000000 ]--- RIP: 0010:___bpf_prog_run+0x1b58/0x24e0 kernel/bpf/core.c:2086 Code: 04 11 49 83 c7 08 41 0f b6 07 89 c6 ff 24 c5 00 eb ec 82 f3 0f 1e fa 41 0f b6 47 01 89 c1 c1 e9 04 48 8b 0c cb 49 0f bf 57 02 <0f> b7 0c 11 83 e0 0f 48 89 0c c3 49 83 c7 08 41 0f b6 07 89 c6 ff RSP: 0018:ffffc9000177fc08 EFLAGS: 00010202 RAX: 0000000000000026 RBX: ffffc9000177fc30 RCX: 000000001311da40 RDX: 0000000000000000 RSI: 0000000000000069 RDI: ffffc9000177fc30 RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000004f R10: 0000000000000001 R11: ffffffff826000d0 R12: 0000000000004068 R13: ffff8881145dc800 R14: ffffc90000fe9048 R15: ffffc90000fe90d0 FS: 00007ff7d4eef6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000001311da40 CR3: 000000011444d000 CR4: 00000000003506f0 ---------------- Code disassembly (best guess): 0: 04 11 add $0x11,%al 2: 49 83 c7 08 add $0x8,%r15 6: 41 0f b6 07 movzbl (%r15),%eax a: 89 c6 mov %eax,%esi c: ff 24 c5 00 eb ec 82 jmp *-0x7d131500(,%rax,8) 13: f3 0f 1e fa endbr64 17: 41 0f b6 47 01 movzbl 0x1(%r15),%eax 1c: 89 c1 mov %eax,%ecx 1e: c1 e9 04 shr $0x4,%ecx 21: 48 8b 0c cb mov (%rbx,%rcx,8),%rcx 25: 49 0f bf 57 02 movswq 0x2(%r15),%rdx * 2a: 0f b7 0c 11 movzwl (%rcx,%rdx,1),%ecx <-- trapping instruction 2e: 83 e0 0f and $0xf,%eax 31: 48 89 0c c3 mov %rcx,(%rbx,%rax,8) 35: 49 83 c7 08 add $0x8,%r15 39: 41 0f b6 07 movzbl (%r15),%eax 3d: 89 c6 mov %eax,%esi 3f: ff .byte 0xff