ci starts bisection 2026-10-21 17:16:30.91091004 +0000 UTC m=+34779.453383505
bisecting cause commit starting from 7c3188f84b54d8e7643f6ec8454824df2823ba73
building syzkaller on 61c200c74c1bf30b3f56f6dad9fca277f494a3d3
ensuring issue is reproducible on original commit 7c3188f84b54d8e7643f6ec8454824df2823ba73

testing commit 7c3188f84b54d8e7643f6ec8454824df2823ba73 gcc
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
kernel signature: 2f92005b19363af80604a9a07fb9117ae757a889909be856320ecb16f2902255
all runs: crashed: WARNING in bpf_clamp_scev_regs
representative crash: WARNING in bpf_clamp_scev_regs, types: [WARNING]
check whether we can drop unnecessary instrumentation
disabling configs for [atomic_sleep hang memleak ubsan kasan locking], they are not needed
testing commit 7c3188f84b54d8e7643f6ec8454824df2823ba73 gcc
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
kernel signature: b888bb9c8aac93e6993fbb8f9cfdf256c59cbf6317a29ab749e917add05c3cd8
all runs: crashed: WARNING in bpf_clamp_scev_regs
representative crash: WARNING in bpf_clamp_scev_regs, types: [WARNING]
the bug reproduces without the instrumentation
disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed
kconfig minimization: base=4177 full=8672 leaves diff=2144
split chunks (needed=false): <2144>
split chunk #0 of len 2144 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 7c3188f84b54d8e7643f6ec8454824df2823ba73 gcc
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
kernel signature: a78f433087408ca1515b50cc2505efbf0daf73fd66ad78b73bc49375be98b10b
all runs: crashed: WARNING in bpf_clamp_scev_regs
representative crash: WARNING in bpf_clamp_scev_regs, 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 7c3188f84b54d8e7643f6ec8454824df2823ba73 gcc
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
kernel signature: 90503340ebfd75987f5de92d84e35bee9f0ebc14c71b8360ec3008d452525fb6
all runs: crashed: WARNING in bpf_clamp_scev_regs
representative crash: WARNING in bpf_clamp_scev_regs, types: [WARNING]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [atomic_sleep hang memleak ubsan kasan locking], they are not needed
testing commit 7c3188f84b54d8e7643f6ec8454824df2823ba73 gcc
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
kernel signature: e1fe2e0b5d0c19f5b8db5bb53628d83f85595846f84c764972d50d8b83f67287
all runs: crashed: WARNING in bpf_clamp_scev_regs
representative crash: WARNING in bpf_clamp_scev_regs, types: [WARNING]
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 7c3188f84b54d8e7643f6ec8454824df2823ba73 gcc
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
kernel signature: 1a3d90bb86f078414ed2820169e2d152bfa9cdf73673eadee5ee2752e9ef17e8
all runs: crashed: WARNING in bpf_clamp_scev_regs
representative crash: WARNING in bpf_clamp_scev_regs, 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 7c3188f84b54d8e7643f6ec8454824df2823ba73 gcc
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
kernel signature: 5d8400fb9f42a936f244442a8cd84f54636e7481f4c65588bbbc937d2512b169
all runs: OK
false negative chance: 0.000
minimized to 428 configs; suspects: [ATM BCMA BLK_DEV_ZONED BPF_SYSCALL CARDBUS CFG80211 CFG80211_WEXT COMMON_CLK CONTIG_ALLOC DVB_CORE EXTCON GPIOLIB HAVE_ARCH_USERFAULTFD_WP HID_ZEROPLUS I2C_MUX IIO IOMMUFD 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_CDNS2_UDC USB_CDNS3 USB_CDNS3_GADGET USB_CDNS3_HOST USB_CDNS3_PCI_WRAP USB_CDNSP_PCI 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 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 USB_CXACRU USB_CYPRESS_CY7C63 USB_CYTHERM USB_DSBR USB_DUMMY_HCD USB_DWC2 USB_DWC2_HOST USB_DWC2_PCI USB_DWC3 USB_DWC3_GADGET USB_DWC3_GENERIC_PLAT USB_DWC3_HAPS USB_DWC3_OF_SIMPLE USB_DWC3_PCI USB_DWC3_ULPI USB_DYNAMIC_MINORS USB_EG20T USB_EHCI_FSL USB_EHCI_HCD_PLATFORM USB_EHCI_ROOT_HUB_TT USB_EHSET_TEST_FIXTURE USB_EMI26 USB_EMI62 USB_EPSON2888 USB_EZUSB_FX2 USB_FEW_INIT_RETRIES USB_F_ACM USB_F_ECM USB_F_EEM USB_F_FS USB_F_HID USB_F_MASS_STORAGE USB_F_MIDI USB_F_MIDI2 USB_F_NCM USB_F_OBEX USB_F_PHONET USB_F_PRINTER USB_F_RNDIS USB_F_SERIAL USB_F_SS_LB USB_F_SUBSET USB_F_TCM USB_F_UAC1 USB_F_UAC1_LEGACY USB_F_UAC2 USB_F_UVC USB_GADGET USB_GADGETFS USB_GADGET_DEBUG_FILES USB_GADGET_DEBUG_FS USB_GL860 USB_GOKU USB_GR_UDC USB_GSPCA USB_GSPCA_BENQ USB_GSPCA_CONEX USB_GSPCA_CPIA1 USB_GSPCA_DTCS033 USB_GSPCA_ETOMS USB_GSPCA_FINEPIX USB_GSPCA_JEILINJ USB_GSPCA_JL2005BCD USB_GSPCA_KINECT USB_GSPCA_KONICA USB_GSPCA_MARS USB_GSPCA_MR97310A USB_GSPCA_NW80X USB_GSPCA_OV519 USB_GSPCA_OV534 USB_GSPCA_OV534_9 USB_GSPCA_PAC207 USB_GSPCA_PAC7302 USB_GSPCA_PAC7311 USB_GSPCA_SE401 USB_GSPCA_SN9C2028 USB_GSPCA_SN9C20X USB_GSPCA_SONIXB USB_GSPCA_SONIXJ USB_GSPCA_SPCA1528 USB_GSPCA_SPCA500 USB_GSPCA_SPCA501 USB_GSPCA_SPCA505 USB_GSPCA_SPCA506 USB_GSPCA_SPCA508 USB_GSPCA_SPCA561 USB_GSPCA_SQ905 USB_GSPCA_SQ905C USB_GSPCA_SQ930X USB_GSPCA_STK014 USB_GSPCA_STK1135 USB_GSPCA_STV0680 USB_GSPCA_SUNPLUS USB_GSPCA_T613 USB_GSPCA_TOPRO USB_GSPCA_TOUPTEK USB_GSPCA_TV8532 USB_GSPCA_VC032X USB_GSPCA_VICAM USB_GSPCA_XIRLINK_CIT USB_GSPCA_ZC3XX USB_HACKRF USB_HCD_BCMA USB_HCD_SSB USB_HSIC_USB3503 USB_HSIC_USB4604 USB_HSO USB_HUB_USB251XB USB_IDMOUSE USB_IOWARRIOR USB_IPHETH USB_ISIGHTFW USB_ISP116X_HCD USB_ISP1301 USB_ISP1760 USB_ISP1760_DUAL_ROLE USB_ISP1760_HCD USB_ISP1761_UDC USB_KAWETH USB_KC2190 USB_KEENE USB_LAN78XX USB_LCD USB_LD USB_LEDS_TRIGGER_USBPORT USB_LED_TRIG USB_LEGOTOWER USB_LGM_PHY USB_LIBCOMPOSITE USB_LINK_LAYER_TEST USB_M5602 USB_MA901 USB_MAX3420_UDC USB_MAX3421_HCD USB_MDC800 USB_MICROTEK USB_MR800 USB_MSI2500 USB_MUSB_DUAL_ROLE USB_MUSB_HDRC USB_NET2280 USB_NET_AQC111 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_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_PCI_RENESAS USB_XHCI_PLATFORM USB_XUSBATM USB_YUREX USERFAULTFD USERFAULTFD_RWP USERIO 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 VETH VFIO VFIO_DEVICE_CDEV VFIO_PCI VFIO_PCI_CORE VFIO_PCI_INTX VFIO_VIRQFD VGASTATE VHOST VHOST_CROSS_ENDIAN_LEGACY 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_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 VIRT_XFER_TO_GUEST_WORK 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 VXLAN WANT_DEV_COREDUMP WEXT_CORE WEXT_PROC WIREGUARD WIRELESS WLAN WLAN_VENDOR_ADMTEK WLAN_VENDOR_MORSEMICRO WLAN_VENDOR_NXP WLAN_VENDOR_SILABS X86_FRED X86_SGX X86_SGX_KVM X86_USER_SHADOW_STACK XDP_SOCKETS XDP_SOCKETS_DIAG XFRM_ESPINTCP XFRM_INTERFACE XFRM_IPCOMP XFRM_IPTFS XFRM_MIGRATE XFRM_OFFLOAD XFRM_STATISTICS XFRM_SUB_POLICY XFRM_USER_COMPAT XFS_BTREE_IN_MEM XFS_DRAIN_INTENTS XFS_FS XFS_LIVE_HOOKS XFS_MEMORY_BUFS XFS_ONLINE_REPAIR XFS_ONLINE_SCRUB XFS_POSIX_ACL XFS_QUOTA XFS_RT XILLYBUS_CLASS XILLYUSB XOR_BLOCKS XOR_BLOCKS_ARCH YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZEROPLUS_FF ZLIB_DEFLATE ZONEFS_FS 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]
disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed
picked [v7.2 v7.1 v7.0 v6.18 v6.16 v6.14 v6.12 v6.10 v6.7 v6.4 v6.1 v5.18 v5.15 v5.12 v5.9 v5.6 v5.3 v5.0 v4.19] out of 45 release tags
testing release v7.2
testing commit 8d3ae59288f1e7d58d76558a6ee96d533bc5019f gcc
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
kernel signature: 83b802f39fcde4f7663d914bbedfc0e2c26dea6e63bbf86de87f7fa20d777528
all runs: OK
false negative chance: 0.000
# git bisect start 7c3188f84b54d8e7643f6ec8454824df2823ba73 8d3ae59288f1e7d58d76558a6ee96d533bc5019f
Bisecting: 9026 revisions left to test after this (roughly 13 steps)
[4e69c1856bfd9ffb7e9d335a25842fa211628929] Merge tag 'drm-next-2026-08-20' of https://gitlab.freedesktop.org/drm/kernel

testing commit 4e69c1856bfd9ffb7e9d335a25842fa211628929 gcc
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
kernel signature: 801ee869909fb69ba19f7f1113295760f3bea29f86df9151f756c07da0adab6c
all runs: OK
false negative chance: 0.000
# git bisect good 4e69c1856bfd9ffb7e9d335a25842fa211628929
Bisecting: 4513 revisions left to test after this (roughly 12 steps)
[79b4f3baae2fa65060c30f827e3c0e8f1db99f98] Merge tag 'mfd-next-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

testing commit 79b4f3baae2fa65060c30f827e3c0e8f1db99f98 gcc
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
failed building 79b4f3baae2fa65060c30f827e3c0e8f1db99f98: mv: cannot stat 'arch/x86/include/generated/asm/.tmp_cpufeaturemasks.h': No such file or directory
# git bisect skip 79b4f3baae2fa65060c30f827e3c0e8f1db99f98
Bisecting: 4513 revisions left to test after this (roughly 12 steps)
[49daa3d668b69a5454b5aba0078848a479f79f1c] perf/arm-cmn: Fix wp_dev_sel2 setting for multi-DTM configurations

testing commit 49daa3d668b69a5454b5aba0078848a479f79f1c gcc
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
kernel signature: db3ca4203f760deb03799302f5f3a60a74b73262d81488dad756639dd836c2c1
all runs: OK
false negative chance: 0.000
# git bisect good 49daa3d668b69a5454b5aba0078848a479f79f1c
Bisecting: 1870 revisions left to test after this (roughly 11 steps)
[58eb1b3325edac42dc6df72c80962bd53a3c8ca7] rds: ib: Clear the sg list when mapping an MR fails

revisions tested: 10, total time: 12h9m56.021363754s (build: 9h39m42.947405964s, test: 1h34m45.32478193s)
error: bisection is taking too long (>12h0m0s), aborting