ci starts bisection 2024-02-07 22:46:19.624834495 +0000 UTC m=+119631.128097365 bisecting fixing commit since b1dfc0f76231bbf395c59d20a2070684620d5d0f building syzkaller on 3222d10cbe77bbedb5a7c455e5bcb6b7081a63b7 ensuring issue is reproducible on original commit b1dfc0f76231bbf395c59d20a2070684620d5d0f testing commit b1dfc0f76231bbf395c59d20a2070684620d5d0f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ffa001f17accb58d571331be5c631ba2db49b448349f3a00b0db99ec550935fd all runs: crashed: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh representative crash: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh, types: [UBSAN] check whether we can drop unnecessary instrumentation disabling configs for [LEAK BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit b1dfc0f76231bbf395c59d20a2070684620d5d0f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: af1310fa26d610818e4688e911a3b9d33eaaaa79e8f9c7051bfdf4f9bf16651c all runs: crashed: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh representative crash: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh, types: [UBSAN] the bug reproduces without the instrumentation disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK BUG], they are not needed kconfig minimization: base=3937 full=7659 leaves diff=2016 split chunks (needed=false): <2016> split chunk #0 of len 2016 into 5 parts testing without sub-chunk 1/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK BUG KASAN], they are not needed testing commit b1dfc0f76231bbf395c59d20a2070684620d5d0f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 822f7a38cd4e0142c78cbbf247ca3428a8ee5c3a7652f42ba2a0a8db4ad74ae2 all runs: crashed: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh representative crash: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh, types: [UBSAN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit b1dfc0f76231bbf395c59d20a2070684620d5d0f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ef86fdbc966499cab4ba8421e9372a7559b58fce8491e398ca8ffe4ade6277f7 all runs: crashed: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh representative crash: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh, types: [UBSAN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK BUG KASAN], they are not needed testing commit b1dfc0f76231bbf395c59d20a2070684620d5d0f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4d2f0f06df6204878db3158718d7e6aa957a0ff33eed84f70530859ca5146c5d all runs: crashed: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh representative crash: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh, types: [UBSAN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK BUG], they are not needed testing commit b1dfc0f76231bbf395c59d20a2070684620d5d0f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a8c61c09c181d589ad00d940eba03e203e29bf8e172b001f07ba35ffad04df0a all runs: crashed: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh representative crash: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh, types: [UBSAN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [HANG LEAK BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit b1dfc0f76231bbf395c59d20a2070684620d5d0f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b96127da617befbeb7804a9dd649140bfeb9c57acae984827a114721ad2c5464 all runs: OK false negative chance: 0.000 minimized to 400 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 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_CONFIGFS USB_CONFIGFS_F_FS USB_CONFIGFS_F_HID USB_CONFIGFS_F_LB_SS USB_CONFIGFS_F_MIDI 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 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USB_MUSB_DUAL_ROLE USB_MUSB_HDRC USB_MV_U3D USB_MV_UDC USB_NET2272 USB_NET2272_DMA USB_NET2280 USB_NET_AX88179_178A USB_NET_AX8817X USB_NET_CDCETHER USB_NET_CDC_EEM USB_NET_CDC_MBIM USB_NET_CDC_NCM USB_NET_CDC_SUBSET USB_NET_CDC_SUBSET_ENABLE USB_NET_CH9200 USB_NET_CX82310_ETH USB_NET_DM9601 USB_NET_GL620A USB_NET_HUAWEI_CDC_NCM USB_NET_INT51X1 USB_NET_KALMIA USB_NET_MCS7830 USB_NET_NET1080 USB_NET_PLUSB USB_NET_QMI_WWAN USB_NET_RNDIS_HOST USB_NET_RNDIS_WLAN USB_NET_SMSC75XX USB_NET_SMSC95XX USB_NET_SR9700 USB_NET_SR9800 USB_NET_ZAURUS USB_OHCI_HCD_PLATFORM USB_OTG USB_OTG_FSM USB_OXU210HP_HCD USB_PEGASUS USB_PULSE8_CEC USB_PWC USB_PWC_INPUT_EVDEV USB_PXA27X USB_R8A66597 USB_R8A66597_HCD USB_RAINSHADOW_CEC USB_RAREMONO USB_RAW_GADGET USB_RTL8150 USB_RTL8152 USB_RTL8153_ECM USB_S2255 USB_SERIAL USB_SERIAL_AIRCABLE USB_SERIAL_ARK3116 USB_SERIAL_BELKIN USB_SERIAL_CH341 USB_SERIAL_CONSOLE USB_SERIAL_CP210X USB_SERIAL_CYBERJACK USB_SERIAL_CYPRESS_M8 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_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_PURELIFI WLAN_VENDOR_SILABS X86_SGX X86_SGX_KVM X86_USER_SHADOW_STACK X86_X2APIC X86_X32_ABI 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 XOR_BLOCKS YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA 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_ZSMALLOC] disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing current HEAD 335bac1daae3fd9070d0f9f34d7d7ba708729256 testing commit 335bac1daae3fd9070d0f9f34d7d7ba708729256 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 86c66ff9952f38680930c56b21c96ba67c468d6e2749c10b110bae02decce589 all runs: OK false negative chance: 0.000 # git bisect start 335bac1daae3fd9070d0f9f34d7d7ba708729256 b1dfc0f76231bbf395c59d20a2070684620d5d0f Bisecting: 7441 revisions left to test after this (roughly 13 steps) [ba5afb9a84df2e6b26a1b6389b98849cd16ea757] fs: rework listmount() implementation determine whether the revision contains the guilty commit revision b1dfc0f76231bbf395c59d20a2070684620d5d0f crashed and is reachable testing commit ba5afb9a84df2e6b26a1b6389b98849cd16ea757 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8deef4b99ae03fd45c5a92cdf99ad49fa4898ceaf154f7d1ceef001c47de86d7 all runs: OK false negative chance: 0.000 # git bisect bad ba5afb9a84df2e6b26a1b6389b98849cd16ea757 Bisecting: 3542 revisions left to test after this (roughly 12 steps) [de927f6c0b07d9e698416c5b287c521b07694cac] Merge tag 's390-6.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux determine whether the revision contains the guilty commit revision b1dfc0f76231bbf395c59d20a2070684620d5d0f crashed and is reachable testing commit de927f6c0b07d9e698416c5b287c521b07694cac gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 98381cbcbe7ba1b131bd049ea1cfc81768a7365ad8bc2146a2a0d2159f9fdd05 all runs: crashed: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh representative crash: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh, types: [UBSAN] # git bisect good de927f6c0b07d9e698416c5b287c521b07694cac Bisecting: 1763 revisions left to test after this (roughly 11 steps) [172b3fccf574eb760a2d88f19971c7e26d1441f0] Merge tag 'ieee802154-for-net-next-2023-12-20' of gitolite.kernel.org:pub/scm/linux/kernel/git/wpan/wpan-next determine whether the revision contains the guilty commit revision b1dfc0f76231bbf395c59d20a2070684620d5d0f crashed and is reachable testing commit 172b3fccf574eb760a2d88f19971c7e26d1441f0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 00d3cbd1661cde9cd4b9cf910d1c65f372798262bec3689c7b37e44a0c6a1392 all runs: OK false negative chance: 0.000 # git bisect bad 172b3fccf574eb760a2d88f19971c7e26d1441f0 Bisecting: 888 revisions left to test after this (roughly 10 steps) [12da68e27b476fa38cf9c72c1d3887f3698d1f2c] Merge tag 'mlx5-updates-2023-12-13' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux determine whether the revision contains the guilty commit checking the merge base c7402612e2e61b76177f22e6e7f705adcbecc6fe no existing result, test the revision testing commit c7402612e2e61b76177f22e6e7f705adcbecc6fe gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 81c4f48f06c85607a43a8c8388452f360f05cf83ba60b922851f5fa7ff3db184 all runs: crashed: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh representative crash: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh, types: [UBSAN] testing commit 12da68e27b476fa38cf9c72c1d3887f3698d1f2c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5a80ccc6780055f701ef494365091b98f2717ba637f1c73076e13dad3bf26f4c all runs: OK false negative chance: 0.000 # git bisect bad 12da68e27b476fa38cf9c72c1d3887f3698d1f2c Bisecting: 444 revisions left to test after this (roughly 9 steps) [ce260cb114bbf65d53834c712729429b2233f5fd] gve: Remove obsolete checks that rely on page size. determine whether the revision contains the guilty commit checking the merge base d3fa86b1a7b4cdc4367acacea16b72e0a200b3d7 no existing result, test the revision testing commit d3fa86b1a7b4cdc4367acacea16b72e0a200b3d7 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1ac3bf9faa7b7d213c68488ee7be33cd1709377c027ea150809557050965584f all runs: crashed: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh representative crash: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh, types: [UBSAN] testing commit ce260cb114bbf65d53834c712729429b2233f5fd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 38300944683e3ef9295d0b30f0afcf52e9eb62971ae4c1a431608268c5d46ddf all runs: OK false negative chance: 0.000 # git bisect bad ce260cb114bbf65d53834c712729429b2233f5fd Bisecting: 239 revisions left to test after this (roughly 8 steps) [340bf2dbb11b4d2d44055fa5851d75fd335e3d45] Merge branch 'bnxt_en-prepare-to-support-new-p7-chips' determine whether the revision contains the guilty commit checking the merge base 7475e51b87969e01a6812eac713a1c8310372e8a no existing result, test the revision testing commit 7475e51b87969e01a6812eac713a1c8310372e8a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 589e0718a8f903a26026297d329718bf2f403a2a402bc95e7fad25d2dff91753 all runs: crashed: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh representative crash: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh, types: [UBSAN] testing commit 340bf2dbb11b4d2d44055fa5851d75fd335e3d45 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 57f82d797c86e979bd6feb5dd3ef79f419ee8eb117c7d8f4421d11ffa3dd2b20 all runs: crashed: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh representative crash: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh, types: [UBSAN] # git bisect good 340bf2dbb11b4d2d44055fa5851d75fd335e3d45 Bisecting: 119 revisions left to test after this (roughly 7 steps) [19ed9b3d7a77c6ac3927fe05f4eacfa056b43a48] tools: ynl-get: use family c-name determine whether the revision contains the guilty commit revision d3fa86b1a7b4cdc4367acacea16b72e0a200b3d7 crashed and is reachable testing commit 19ed9b3d7a77c6ac3927fe05f4eacfa056b43a48 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 663fdbd2b3cc447eb4eab425144426d6359e9e1d7cbe06d789f2dc132da06dc7 all runs: OK false negative chance: 0.000 # git bisect bad 19ed9b3d7a77c6ac3927fe05f4eacfa056b43a48 Bisecting: 59 revisions left to test after this (roughly 6 steps) [3cf98cf594ea923b8b1e0385b580d3d8aae68c06] bpf: remove redundant s{32,64} -> u{32,64} deduction logic determine whether the revision contains the guilty commit checking the merge base 89cdf9d556016a54ff6ddd62324aa5ec790c05cc no existing result, test the revision testing commit 89cdf9d556016a54ff6ddd62324aa5ec790c05cc gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 61069be21f2e1f3e53461dff8c91469dbdc6371ceb4cfc9d76798a60e5e3662b all runs: crashed: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh representative crash: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh, types: [UBSAN] testing commit 3cf98cf594ea923b8b1e0385b580d3d8aae68c06 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fd749595a22852a5c9578f1a3fd14e7764a5fb310141b0daeb43f8f7d18f4b05 all runs: OK false negative chance: 0.000 # git bisect bad 3cf98cf594ea923b8b1e0385b580d3d8aae68c06 Bisecting: 29 revisions left to test after this (roughly 5 steps) [045edee19d591e59ed53772bf6dfc9b1ed9577eb] bpf: Introduce KF_ARG_PTR_TO_CONST_STR determine whether the revision contains the guilty commit revision 89cdf9d556016a54ff6ddd62324aa5ec790c05cc crashed and is reachable testing commit 045edee19d591e59ed53772bf6dfc9b1ed9577eb gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6d2c1cf04c2340d73462c06ab197660854f9b60544c124b2a9504f6fb3bb4036 all runs: crashed: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh representative crash: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh, types: [UBSAN] # git bisect good 045edee19d591e59ed53772bf6dfc9b1ed9577eb Bisecting: 14 revisions left to test after this (roughly 4 steps) [92411764e3106f38ac815d2fb1ae011e7bbe2abc] Merge branch 'for-6.8-bpf' of https://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup into bpf-next determine whether the revision contains the guilty commit revision 89cdf9d556016a54ff6ddd62324aa5ec790c05cc crashed and is reachable testing commit 92411764e3106f38ac815d2fb1ae011e7bbe2abc gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 543c4e3a8619476485544d28f93d4ebb4a356296ee388dab05dbbba4b3cb3ef1 all runs: crashed: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh representative crash: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh, types: [UBSAN] # git bisect good 92411764e3106f38ac815d2fb1ae011e7bbe2abc Bisecting: 7 revisions left to test after this (roughly 3 steps) [c1dcc050aa648bb3b831030d547c3fcc1c68140c] selftests/bpf: Add a new cgroup helper get_classid_cgroup_id() determine whether the revision contains the guilty commit revision 92411764e3106f38ac815d2fb1ae011e7bbe2abc crashed and is reachable testing commit c1dcc050aa648bb3b831030d547c3fcc1c68140c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: eaa1c6d6acee79f3616b24d7afe11254e9cb2f059fdbb8a87e8bb39087b7416b all runs: crashed: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh representative crash: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh, types: [UBSAN] # git bisect good c1dcc050aa648bb3b831030d547c3fcc1c68140c Bisecting: 3 revisions left to test after this (roughly 2 steps) [67420501e8681ae18f9f0ea0a69cd2f432100e70] bpf: generalize reg_set_min_max() to handle non-const register comparisons determine whether the revision contains the guilty commit revision 92411764e3106f38ac815d2fb1ae011e7bbe2abc crashed and is reachable testing commit 67420501e8681ae18f9f0ea0a69cd2f432100e70 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ccb7174e731039c41ea52dda8fe60d1c03433e3b60797264a784e0cc7322f147 all runs: crashed: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh representative crash: UBSAN: shift-out-of-bounds in scalar32_min_max_arsh, types: [UBSAN] # git bisect good 67420501e8681ae18f9f0ea0a69cd2f432100e70 Bisecting: 1 revision left to test after this (roughly 1 step) [be41a203bb9e0159099e189e510388fe61962eb8] bpf: enhance BPF_JEQ/BPF_JNE is_branch_taken logic determine whether the revision contains the guilty commit revision c1dcc050aa648bb3b831030d547c3fcc1c68140c crashed and is reachable testing commit be41a203bb9e0159099e189e510388fe61962eb8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ec44d055128cec7515881d9cd16d76916391a17145d7708d098ef0b756494630 all runs: OK false negative chance: 0.000 # git bisect bad be41a203bb9e0159099e189e510388fe61962eb8 Bisecting: 0 revisions left to test after this (roughly 0 steps) [96381879a370425a30b810906946f64c0726450e] bpf: generalize is_scalar_branch_taken() logic determine whether the revision contains the guilty commit revision c1dcc050aa648bb3b831030d547c3fcc1c68140c crashed and is reachable testing commit 96381879a370425a30b810906946f64c0726450e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 88cf930575c2a67d03438da1559da0d343ef775aad91fcfdc92231e0568c87b4 all runs: OK false negative chance: 0.000 # git bisect bad 96381879a370425a30b810906946f64c0726450e 96381879a370425a30b810906946f64c0726450e is the first bad commit commit 96381879a370425a30b810906946f64c0726450e Author: Andrii Nakryiko Date: Sat Nov 11 17:05:58 2023 -0800 bpf: generalize is_scalar_branch_taken() logic Generalize is_branch_taken logic for SCALAR_VALUE register to handle cases when both registers are not constants. Previously supported vs cases are a natural subset of more generic vs set of cases. Generalized logic relies on straightforward segment intersection checks. Acked-by: Eduard Zingerman Signed-off-by: Andrii Nakryiko Acked-by: Shung-Hsi Yu Link: https://lore.kernel.org/r/20231112010609.848406-3-andrii@kernel.org Signed-off-by: Alexei Starovoitov kernel/bpf/verifier.c | 98 ++++++++++++++++++++++++++++++--------------------- 1 file changed, 58 insertions(+), 40 deletions(-) accumulated error probability: 0.00 culprit signature: 88cf930575c2a67d03438da1559da0d343ef775aad91fcfdc92231e0568c87b4 parent signature: ccb7174e731039c41ea52dda8fe60d1c03433e3b60797264a784e0cc7322f147 revisions tested: 26, total time: 9h55m28.413666036s (build: 5h40m30.149850392s, test: 3h36m14.817937619s) first good commit: 96381879a370425a30b810906946f64c0726450e bpf: generalize is_scalar_branch_taken() logic recipients (to): ["andrii@kernel.org" "ast@kernel.org" "eddyz87@gmail.com" "shung-hsi.yu@suse.com"] recipients (cc): []