ci starts bisection 2025-09-05 17:10:34.966980408 +0000 UTC m=+135155.854552966 bisecting cause commit starting from d69eb204c255c35abd9e8cb621484e8074c75eaa building syzkaller on d291dd2d58a1885c00a60561048b6ceb1bf1206a ensuring issue is reproducible on original commit d69eb204c255c35abd9e8cb621484e8074c75eaa testing commit d69eb204c255c35abd9e8cb621484e8074c75eaa gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1ec9cfa4ed1198ca9f4d4976e668e0ac31e6edf584f33d06ea5e93529cc50a6a all runs: crashed: WARNING in reg_bounds_sanity_check representative crash: WARNING in reg_bounds_sanity_check, types: [WARNING] check whether we can drop unnecessary instrumentation disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed testing commit d69eb204c255c35abd9e8cb621484e8074c75eaa gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6ed2b6eaa4f1fccc43415aeeb2363469a139e1c03cad4eaf301f3ed2a3bd413a all runs: crashed: WARNING in reg_bounds_sanity_check representative crash: WARNING in reg_bounds_sanity_check, types: [WARNING] the bug reproduces without the instrumentation disabling configs for [ubsan kasan locking atomic_sleep hang memleak], they are not needed kconfig minimization: base=4093 full=8498 leaves diff=2189 split chunks (needed=false): <2189> split chunk #0 of len 2189 into 5 parts testing without sub-chunk 1/5 disabling configs for [memleak ubsan kasan locking atomic_sleep hang], they are not needed testing commit d69eb204c255c35abd9e8cb621484e8074c75eaa gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b9842ca6964f01d5c9594c51c894444f3d3d6f0bda5f7b426bfc0127b200f18e all runs: crashed: WARNING in reg_bounds_sanity_check representative crash: WARNING in reg_bounds_sanity_check, types: [WARNING] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed testing commit d69eb204c255c35abd9e8cb621484e8074c75eaa gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c3dfbda142a983231c44eb431fcb537fe1e5f3f9a0eec624b5494b2e1c898169 all runs: crashed: WARNING in reg_bounds_sanity_check representative crash: WARNING in reg_bounds_sanity_check, types: [WARNING] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [ubsan kasan locking atomic_sleep hang memleak], they are not needed testing commit d69eb204c255c35abd9e8cb621484e8074c75eaa gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4e20ee59d60ae82274e1a807ea767d620f34195ba78d8be6b33a64e0795a9013 all runs: crashed: WARNING in reg_bounds_sanity_check representative crash: WARNING in reg_bounds_sanity_check, types: [WARNING] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed testing commit d69eb204c255c35abd9e8cb621484e8074c75eaa gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 43816bc8a3c2cd616410c2d0ec3a6b71d845bf3a8162df7bc8907a54d1d7f2fd all runs: crashed: WARNING in reg_bounds_sanity_check representative crash: WARNING in reg_bounds_sanity_check, types: [WARNING] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed testing commit d69eb204c255c35abd9e8cb621484e8074c75eaa gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1514c7a6a115298c03eee452c5ce4710b6ff2577e6f690100a1a1d2f688bfb00 all runs: OK false negative chance: 0.000 minimized to 437 configs; suspects: [ARCH_ENABLE_MEMORY_HOTREMOVE ATM BCMA BLK_DEV_ZONED BPF_SYSCALL CARDBUS CFG80211 CFG80211_WEXT CMA COMMON_CLK CONTIG_ALLOC DVB_CORE EXTCON 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 USBPCWATCHDOG USB_ACM USB_ADUTUX USB_AIRSPY USB_ALI_M5632 USB_AMD5536UDC USB_AN2720 USB_APPLEDISPLAY USB_ARMLINUX USB_ATM USB_BDC_UDC 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_NPCM USB_CHIPIDEA_PCI USB_CHIPIDEA_UDC USB_CONFIGFS 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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_PCI_RENESAS USB_XHCI_PLATFORM USB_XUSBATM USB_YUREX USERFAULTFD USERIO USER_RETURN_NOTIFIER UVC_COMMON U_SERIAL_CONSOLE V4L2_ASYNC V4L2_FWNODE V4L2_MEM2MEM_DEV V4L_TEST_DRIVERS VALIDATE_FS_PARSER VDPA VDPA_SIM VDPA_SIM_BLOCK VDPA_SIM_NET VETH VFIO VFIO_DEVICE_CDEV VFIO_PCI VFIO_PCI_CORE VFIO_PCI_INTX VFIO_VIRQFD VGASTATE VHOST VHOST_CROSS_ENDIAN_LEGACY VHOST_ENABLE_FORK_OWNER_CONTROL VHOST_IOTLB VHOST_NET VHOST_RING VHOST_TASK VHOST_VDPA VHOST_VSOCK VIDEO 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_CAMERA_LENS 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_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_PROC WIREGUARD WIRELESS WLAN WLAN_VENDOR_ADMTEK WLAN_VENDOR_SILABS X86_SGX X86_SGX_KVM X86_USER_SHADOW_STACK 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 XILLYBUS_CLASS XILLYUSB XOR_BLOCKS YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZEROPLUS_FF ZLIB_DEFLATE ZONEFS_FS ZPOOL ZRAM ZRAM_BACKEND_FORCE_LZO ZRAM_BACKEND_LZO ZRAM_DEF_COMP_LZO ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_842 ZSWAP_DEFAULT_ON ZSWAP_SHRINKER_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZSMALLOC] disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed picked [v6.16 v6.15 v6.14 v6.12 v6.10 v6.8 v6.6 v6.4 v6.1 v5.18 v5.15 v5.12 v5.9 v5.6 v5.3 v5.0 v4.19] out of 39 release tags testing release v6.16 testing commit 038d61fd642278bab63ee8ef722c50d10ab01e8f gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1ccc6f10e23b03f7bc37ec78b5214dd50bd062611d96588017924d3db1aa5556 all runs: OK false negative chance: 0.000 # git bisect start d69eb204c255c35abd9e8cb621484e8074c75eaa 038d61fd642278bab63ee8ef722c50d10ab01e8f Bisecting: 6731 revisions left to test after this (roughly 13 steps) [b7dbc2e813e00d61e66fc0267599441493774b93] Merge tag 'probes-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace testing commit b7dbc2e813e00d61e66fc0267599441493774b93 gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0e1b92b37f941ef86530ebca1b37640a8d752da35d87b70fc63f37c187d354d4 all runs: crashed: WARNING in reg_bounds_sanity_check representative crash: WARNING in reg_bounds_sanity_check, types: [WARNING] # git bisect bad b7dbc2e813e00d61e66fc0267599441493774b93 Bisecting: 3381 revisions left to test after this (roughly 12 steps) [115e74a29b530d121891238e9551c4bcdf7b04b5] Merge tag 'soc-dt-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc testing commit 115e74a29b530d121891238e9551c4bcdf7b04b5 gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ed40b66654d94d4f90c723aa0fd675258318c18e3299f7d0d6f8b8ddc1ab79c7 all runs: OK false negative chance: 0.000 # git bisect good 115e74a29b530d121891238e9551c4bcdf7b04b5 Bisecting: 1626 revisions left to test after this (roughly 11 steps) [126d85fb040559ba6654f51c0b587d280b041abb] Merge tag 'wireless-next-2025-07-24' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next testing commit 126d85fb040559ba6654f51c0b587d280b041abb gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 016fd52799172544765f4d3567ab4f3f887b3f7f9406fc06abdddde35071818c all runs: OK false negative chance: 0.000 # git bisect good 126d85fb040559ba6654f51c0b587d280b041abb Bisecting: 811 revisions left to test after this (roughly 10 steps) [72b8944f147e151e845d976e7f48beff38967499] Merge tag 'locking-core-2025-07-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip testing commit 72b8944f147e151e845d976e7f48beff38967499 gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3533aaf33b5b93a0eabf7db4764891d747479922fd5c0e2530ddcb4ac608a236 all runs: OK false negative chance: 0.000 # git bisect good 72b8944f147e151e845d976e7f48beff38967499 Bisecting: 373 revisions left to test after this (roughly 9 steps) [8be4d31cb8aaeea27bde4b7ddb26e28a89062ebf] Merge tag 'net-next-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next testing commit 8be4d31cb8aaeea27bde4b7ddb26e28a89062ebf gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9087e4d0a82717ff8c4d6f94d4719670d520870e4885fe07def1c3573aff88cb all runs: OK false negative chance: 0.000 # git bisect good 8be4d31cb8aaeea27bde4b7ddb26e28a89062ebf Bisecting: 186 revisions left to test after this (roughly 8 steps) [4a760d2d7aa6357428eadb6c3714f21a8b85cf6b] selftests/bpf: enable tracing_struct tests for arm64 testing commit 4a760d2d7aa6357428eadb6c3714f21a8b85cf6b gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 72dac6e004255f38413e1e235bd7aa573baeedf28a8c2f3dac404ff5af51bed0 all runs: crashed: WARNING in reg_bounds_sanity_check representative crash: WARNING in reg_bounds_sanity_check, types: [WARNING] # git bisect bad 4a760d2d7aa6357428eadb6c3714f21a8b85cf6b Bisecting: 92 revisions left to test after this (roughly 7 steps) [0ed5f79987ddb608aca374599f531a6bd831ac29] Merge branch 'bpf-allow-void-cast-using-bpf_rdonly_cast' testing commit 0ed5f79987ddb608aca374599f531a6bd831ac29 gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 725cf98bf99ab696439d52e807f5f2bd80191ba56059ab78940f71f5ed2a5158 all runs: OK false negative chance: 0.000 # git bisect good 0ed5f79987ddb608aca374599f531a6bd831ac29 Bisecting: 46 revisions left to test after this (roughly 6 steps) [d7c431cafcb4917b0d87b5cd10637cd47b6c8d79] bpf: Add dump_stack() analogue to print to BPF stderr testing commit d7c431cafcb4917b0d87b5cd10637cd47b6c8d79 gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b6df76a7b8e7c720eba26b395e2445dcf202181ebc6d27bfed61392894d1f1a3 all runs: crashed: WARNING in reg_bounds_sanity_check representative crash: WARNING in reg_bounds_sanity_check, types: [WARNING] # git bisect bad d7c431cafcb4917b0d87b5cd10637cd47b6c8d79 Bisecting: 22 revisions left to test after this (roughly 5 steps) [b2268d550d20ff860bddfe3a91b1aec00414689a] s390/bpf: Centralize frame offset calculations testing commit b2268d550d20ff860bddfe3a91b1aec00414689a gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0828994845acdbed7dfc08f22016551d5cb4dbf0c24001c0ec208f0f174c8763 all runs: OK false negative chance: 0.000 # git bisect good b2268d550d20ff860bddfe3a91b1aec00414689a Bisecting: 11 revisions left to test after this (roughly 4 steps) [38d95beb4b24301362f8bdae7fbdb82d74b803ca] selftests/bpf: Allow veristat compile standalone testing commit 38d95beb4b24301362f8bdae7fbdb82d74b803ca gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 04dcb48ab80958443d471cb0efa724a11f613d48e28141661f73215cd16f0086 all runs: crashed: WARNING in reg_bounds_sanity_check representative crash: WARNING in reg_bounds_sanity_check, types: [WARNING] # git bisect bad 38d95beb4b24301362f8bdae7fbdb82d74b803ca Bisecting: 5 revisions left to test after this (roughly 3 steps) [1230be820981a3ef0fb9abc011f1b3d093f3b1e4] selftests/bpf: Fix spelling mistake "subtration" -> "subtraction" testing commit 1230be820981a3ef0fb9abc011f1b3d093f3b1e4 gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 30cde7d73aeddc7dfedd7a5e17662d86c266b1d1a5c71f63bd8cbdac857b80e3 all runs: crashed: WARNING in reg_bounds_sanity_check representative crash: WARNING in reg_bounds_sanity_check, types: [WARNING] # git bisect bad 1230be820981a3ef0fb9abc011f1b3d093f3b1e4 Bisecting: 2 revisions left to test after this (roughly 1 step) [26d0e5324677dc0acce4c0fda52316154a1d689e] Merge branch 's390-bpf-describe-the-frame-using-a-struct-instead-of-constants' testing commit 26d0e5324677dc0acce4c0fda52316154a1d689e gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6fef45e47cf75b60dc927578091095f94fdfffe43eda18741c4b59f04bc3a6ab all runs: OK false negative chance: 0.000 # git bisect good 26d0e5324677dc0acce4c0fda52316154a1d689e Bisecting: 0 revisions left to test after this (roughly 1 step) [cce3fee729ee18caa03bade7f4c360343e863bb1] selftests/bpf: Enable dynptr/test_probe_read_user_str_dynptr testing commit cce3fee729ee18caa03bade7f4c360343e863bb1 gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6031a1b5f91f6636f14c01cca56a5d09c2070056b21659a2ea455e1ab93ae758 all runs: crashed: WARNING in reg_bounds_sanity_check representative crash: WARNING in reg_bounds_sanity_check, types: [WARNING] # git bisect bad cce3fee729ee18caa03bade7f4c360343e863bb1 Bisecting: 0 revisions left to test after this (roughly 0 steps) [0df1a55afa832f463f9ad68ddc5de92230f1bc8a] bpf: Warn on internal verifier errors testing commit 0df1a55afa832f463f9ad68ddc5de92230f1bc8a gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 009e44ff24e562fa41cb93c16c6a5888b3f51131f0121c47519bc287afcff919 all runs: crashed: WARNING in reg_bounds_sanity_check representative crash: WARNING in reg_bounds_sanity_check, types: [WARNING] # git bisect bad 0df1a55afa832f463f9ad68ddc5de92230f1bc8a 0df1a55afa832f463f9ad68ddc5de92230f1bc8a is the first bad commit commit 0df1a55afa832f463f9ad68ddc5de92230f1bc8a Author: Paul Chaignon Date: Tue Jul 1 20:36:15 2025 +0200 bpf: Warn on internal verifier errors This patch is a follow up to commit 1cb0f56d9618 ("bpf: WARN_ONCE on verifier bugs"). It generalizes the use of verifier_error throughout the verifier, in particular for logs previously marked "verifier internal error". As a consequence, all of those verifier bugs will now come with a kernel warning (under CONFIG_DBEUG_KERNEL) detectable by fuzzers. While at it, some error messages that were too generic (ex., "bpf verifier is misconfigured") have been reworded. Signed-off-by: Paul Chaignon Link: https://lore.kernel.org/r/aGQqnzMyeagzgkCK@Tunnel Signed-off-by: Alexei Starovoitov kernel/bpf/verifier.c | 211 ++++++++++++++++++++++++-------------------------- 1 file changed, 102 insertions(+), 109 deletions(-) accumulated error probability: 0.00 culprit signature: 009e44ff24e562fa41cb93c16c6a5888b3f51131f0121c47519bc287afcff919 parent signature: 6fef45e47cf75b60dc927578091095f94fdfffe43eda18741c4b59f04bc3a6ab revisions tested: 22, total time: 8h47m7.278665422s (build: 5h30m25.179874501s, test: 2h39m31.86640662s) first bad commit: 0df1a55afa832f463f9ad68ddc5de92230f1bc8a bpf: Warn on internal verifier errors recipients (to): ["ast@kernel.org" "ast@kernel.org" "bpf@vger.kernel.org" "daniel@iogearbox.net" "paul.chaignon@gmail.com"] recipients (cc): ["andrii@kernel.org" "eddyz87@gmail.com" "haoluo@google.com" "john.fastabend@gmail.com" "jolsa@kernel.org" "kpsingh@kernel.org" "linux-kernel@vger.kernel.org" "martin.lau@linux.dev" "sdf@fomichev.me" "song@kernel.org" "yonghong.song@linux.dev"] crash: WARNING in reg_bounds_sanity_check verifier bug: REG INVARIANTS VIOLATION (false_reg1): range bounds violation u64=[0x20, 0x0] s64=[0x20, 0x0] u32=[0x20, 0x0] s32=[0x20, 0x0] var_off=(0x20, 0x0)(1) WARNING: CPU: 1 PID: 3918 at kernel/bpf/verifier.c:2682 reg_bounds_sanity_check+0x160/0x220 kernel/bpf/verifier.c:2682 Modules linked in: CPU: 1 UID: 0 PID: 3918 Comm: syz.2.17 Not tainted syzkaller #0 PREEMPT(undef) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:reg_bounds_sanity_check+0x160/0x220 kernel/bpf/verifier.c:2682 Code: 9a 29 01 c6 05 9c 87 2e 02 01 90 41 56 48 c7 c7 b0 fc f9 82 41 52 41 55 41 53 56 52 4c 89 fa 50 48 8b 75 c8 e8 41 57 e6 ff 90 <0f> 0b 90 90 4c 8b 73 20 4c 8b 53 18 48 83 c4 38 44 8b 6b 4c 44 8b RSP: 0018:ffffc900078e7920 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff88811c6a0168 RCX: 0000000000000000 RDX: 0000000000000002 RSI: ffffffff83128827 RDI: 00000000ffffffff RBP: ffffc900078e7990 R08: 0000000000000000 R09: 0000000000000003 R10: ffffc900078e77b8 R11: ffffffff835943c8 R12: ffff88811bf80000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff830a6397 FS: 00007f2ff38e76c0(0000) GS:ffff8882b3993000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2ff38e6f98 CR3: 000000011452f000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: reg_set_min_max kernel/bpf/verifier.c:16262 [inline] reg_set_min_max+0x11e/0x1d0 kernel/bpf/verifier.c:16234 check_cond_jmp_op+0x9f0/0x15b0 kernel/bpf/verifier.c:16694 do_check_insn kernel/bpf/verifier.c:19882 [inline] do_check kernel/bpf/verifier.c:20017 [inline] do_check_common+0x24cb/0x2c10 kernel/bpf/verifier.c:23180 do_check_main kernel/bpf/verifier.c:23263 [inline] bpf_check+0x253e/0x3010 kernel/bpf/verifier.c:24619 bpf_prog_load+0x6f4/0xc50 kernel/bpf/syscall.c:2972 __sys_bpf+0x22bc/0x2300 kernel/bpf/syscall.c:5978 __do_sys_bpf kernel/bpf/syscall.c:6085 [inline] __se_sys_bpf kernel/bpf/syscall.c:6083 [inline] __x64_sys_bpf+0x19/0x30 kernel/bpf/syscall.c:6083 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xb6/0x3e0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2ff3a7ebe9 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:00007f2ff38e7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f2ff3cb5fa0 RCX: 00007f2ff3a7ebe9 RDX: 0000000000000048 RSI: 00002000000017c0 RDI: 0000000000000005 RBP: 00007f2ff3b01e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f2ff3cb6038 R14: 00007f2ff3cb5fa0 R15: 00007ffe5f9d4738