ci2 starts bisection 2025-11-28 15:02:23.551932085 +0000 UTC m=+178355.729055132 bisecting fixing commit since 43bb85222e53926decace01ce6584ca88e09a0a9 building syzkaller on fdeaa69b728b8c7a429af7101cdd788f1dc9b916 ensuring issue is reproducible on original commit 43bb85222e53926decace01ce6584ca88e09a0a9 testing commit 43bb85222e53926decace01ce6584ca88e09a0a9 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 77f570036dbcf1d0e56269638807a89d0731deccdf2c465ee6119f1e88fb0f83 run #0: crashed: WARNING in bpf_probe_read_compat run #1: crashed: possible deadlock in __hrtimer_run_queues run #2: crashed: possible deadlock in console_unlock run #3: crashed: WARNING in bpf_probe_read_compat run #4: crashed: possible deadlock in __hrtimer_run_queues run #5: crashed: WARNING in bpf_probe_read_compat run #6: crashed: possible deadlock in __hrtimer_run_queues run #7: crashed: possible deadlock in console_unlock run #8: crashed: possible deadlock in __hrtimer_run_queues run #9: crashed: WARNING in bpf_probe_read_compat run #10: crashed: WARNING in bpf_probe_read_compat run #11: crashed: possible deadlock in __hrtimer_run_queues run #12: crashed: WARNING in hrtimer_start_range_ns run #13: crashed: WARNING in bpf_probe_read_compat run #14: crashed: possible deadlock in console_unlock run #15: crashed: WARNING in hrtimer_start_range_ns run #16: crashed: WARNING in bpf_probe_read_compat run #17: crashed: WARNING in bpf_probe_read_compat run #18: crashed: WARNING in bpf_probe_read_compat run #19: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING LOCKDEP] check whether we can drop unnecessary instrumentation disabling configs for [hang memleak ubsan kasan atomic_sleep], they are not needed testing commit 43bb85222e53926decace01ce6584ca88e09a0a9 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e0d4d35ce97b71ad65ee0344e937f660ba790a45cedc1af8cfeaf598f1a031b0 all runs: OK false negative chance: 0.000 kconfig minimization: base=3707 full=7423 leaves diff=2100 split chunks (needed=false): <2100> split chunk #0 of len 2100 into 5 parts testing without sub-chunk 1/5 testing commit 43bb85222e53926decace01ce6584ca88e09a0a9 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 554fb896e922236b30fd9553900775cef21093fb9d339c90ec8faa2a2f979bb5 run #0: crashed: WARNING in syz run #1: crashed: WARNING in bpf_probe_read_compat run #2: crashed: possible deadlock in console_unlock run #3: crashed: possible deadlock in console_unlock run #4: crashed: possible deadlock in __hrtimer_run_queues run #5: crashed: WARNING in hrtimer_start_range_ns run #6: crashed: possible deadlock in console_unlock run #7: crashed: WARNING in bpf_probe_read_compat run #8: crashed: WARNING in bpf_probe_read_compat run #9: crashed: WARNING in hrtimer_start_range_ns representative crash: WARNING in syz, types: [WARNING LOCKDEP] the chunk can be dropped testing without sub-chunk 2/5 testing commit 43bb85222e53926decace01ce6584ca88e09a0a9 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a4cc33b72ee08037badb140e556d725ba65ea60a898aa1afcf2f0d310b3e4cf8 all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] the chunk can be dropped testing without sub-chunk 3/5 testing commit 43bb85222e53926decace01ce6584ca88e09a0a9 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 91066781be9134a74b4b4bc8d6be5c3e1408acd52967453419f91d55c037651a all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] the chunk can be dropped testing without sub-chunk 4/5 testing commit 43bb85222e53926decace01ce6584ca88e09a0a9 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a1c9ec777645311206b20c974a9ba7adfe654c9d10ba7cd094508cf5f23174e8 all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] the chunk can be dropped testing without sub-chunk 5/5 testing commit 43bb85222e53926decace01ce6584ca88e09a0a9 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 03e5744aff8098478baf3924ef54b23d3318271239195db6780b6d24955eafff all runs: OK false negative chance: 0.000 minimized to 420 configs; suspects: [ARCH_ENABLE_MEMORY_HOTREMOVE ATM BCMA BLK_DEV_ZONED BPF_SYSCALL CARDBUS CFG80211 CFG80211_WEXT CMA CONTIG_ALLOC CRYPTO_842 CRYPTO_LZ4 CRYPTO_LZ4HC CRYPTO_LZO CRYPTO_ZSTD DVB_CORE EXTCON FB FRONTSWAP GPIOLIB HID_ZEROPLUS I2C_MUX IIO IRQ_REMAP 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_HOTPLUG_SPARSE 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_CHIPIDEA USB_CHIPIDEA_GENERIC USB_CHIPIDEA_HOST USB_CHIPIDEA_IMX USB_CHIPIDEA_MSM USB_CHIPIDEA_PCI USB_CHIPIDEA_TEGRA 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_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 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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_STKWEBCAM 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_U132_HCD 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 USB_ZR364XX USERFAULTFD USERIO USERMODE_DRIVER USER_RETURN_NOTIFIER U_SERIAL_CONSOLE V4L2_MEM2MEM_DEV V4L_TEST_DRIVERS VALIDATE_FS_PARSER VDPA VETH VFIO VFIO_IOMMU_TYPE1 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_VDPA VHOST_VSOCK VIDEOBUF2_CORE VIDEOBUF2_DMA_CONTIG VIDEOBUF2_DMA_SG VIDEOBUF2_MEMOPS VIDEOBUF2_V4L2 VIDEOBUF2_VMALLOC VIDEOBUF_GEN VIDEOBUF_VMALLOC VIDEO_AU0828 VIDEO_AU0828_RC VIDEO_AU0828_V4L2 VIDEO_CPIA2 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_STK1160_COMMON VIDEO_TM6000 VIDEO_TM6000_ALSA VIDEO_TM6000_DVB VIDEO_TUNER VIDEO_TVEEPROM VIDEO_USBTV VIDEO_V4L2 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 X86_SGX 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 ZONEFS_FS ZPOOL ZRAM ZRAM_DEF_COMP_LZORLE ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_LZO ZSWAP_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZBUD] determining the merge base between 43bb85222e53926decace01ce6584ca88e09a0a9 and e538109ac71d801d26776af5f3c54f548296c29c 8bb7eca972ad531c9b149c0a51ab43a417385813/Linux 5.15 is a merge base, check if it has the bug testing commit 8bb7eca972ad531c9b149c0a51ab43a417385813 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c4d7123c70fc7f9c45c2dd30ca53741cf9ff6bbb10204a745473814a9665ba44 all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] testing current HEAD e538109ac71d801d26776af5f3c54f548296c29c testing commit e538109ac71d801d26776af5f3c54f548296c29c gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: c60c715e24528578adf2173bfc7b14599233091f1e67c80178d8f75490ceaf2d all runs: OK false negative chance: 0.000 # git bisect start e538109ac71d801d26776af5f3c54f548296c29c 8bb7eca972ad531c9b149c0a51ab43a417385813 Bisecting: 177563 revisions left to test after this (roughly 18 steps) [5a6a09e97199d6600d31383055f9d43fbbcbe86f] Merge tag 'cgroup-for-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 5a6a09e97199d6600d31383055f9d43fbbcbe86f gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 7b7718b995d673805b027c36a80babe7a5235c3c48152bda3fe747147edb4d35 all runs: OK false negative chance: 0.000 # git bisect bad 5a6a09e97199d6600d31383055f9d43fbbcbe86f Bisecting: 88006 revisions left to test after this (roughly 17 steps) [4899a36f91a9f9b06878471096bd143e7253006d] Merge tag 'powerpc-6.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 4899a36f91a9f9b06878471096bd143e7253006d gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: b553c0ad029224c619fc0761bcbf76a1b641bc094284258a31fe232cc195a59c all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good 4899a36f91a9f9b06878471096bd143e7253006d Bisecting: 44193 revisions left to test after this (roughly 16 steps) [b68ee1c6131c540a62ecd443be89c406401df091] Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit b68ee1c6131c540a62ecd443be89c406401df091 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 5ec966bdad02b5fac7c4727c78462f97c4b5097964a631d67a59502c32f469f8 all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good b68ee1c6131c540a62ecd443be89c406401df091 Bisecting: 22068 revisions left to test after this (roughly 15 steps) [15ac468614e5e4fee82e1eb32568f427b0e51adc] Merge tag 'media/v6.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media determine whether the revision contains the guilty commit revision 4899a36f91a9f9b06878471096bd143e7253006d crashed and is reachable testing commit 15ac468614e5e4fee82e1eb32568f427b0e51adc gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: fe7f5ac44ba4a8433de293e465a9a1d9cc309d87e64d54dc52a5b05f42f1b035 all runs: OK false negative chance: 0.000 # git bisect bad 15ac468614e5e4fee82e1eb32568f427b0e51adc Bisecting: 11055 revisions left to test after this (roughly 14 steps) [a0433f8cae3ac51f59b4b1863032822aaa2d8164] Merge tag 'for-6.5/block-2023-06-23' of git://git.kernel.dk/linux determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit a0433f8cae3ac51f59b4b1863032822aaa2d8164 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: aa582b1f7d8727663659b35273dd2a4cb01066af578cbc9525a26c926ad757c6 all runs: OK false negative chance: 0.000 # git bisect bad a0433f8cae3ac51f59b4b1863032822aaa2d8164 Bisecting: 5499 revisions left to test after this (roughly 13 steps) [56c455b38dba47ae9cb48d71b2a106d769d1a694] Merge tag 'xfs-6.4-merge-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 56c455b38dba47ae9cb48d71b2a106d769d1a694 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 6888284260d317e6233b5501a5acddc63cc2f01785addedf70b4d766cd331d96 all runs: OK false negative chance: 0.000 # git bisect bad 56c455b38dba47ae9cb48d71b2a106d769d1a694 Bisecting: 2472 revisions left to test after this (roughly 12 steps) [1c15ca4e4efaddb78f83eed31eeee34c522c3ae2] Merge tag 'sound-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 1c15ca4e4efaddb78f83eed31eeee34c522c3ae2 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: ba72ca393d00f05818bdb93d27997108968808af0dbf158c840fe417524d8ef2 all runs: OK false negative chance: 0.000 # git bisect bad 1c15ca4e4efaddb78f83eed31eeee34c522c3ae2 Bisecting: 1548 revisions left to test after this (roughly 11 steps) [7a486c443c89bd949f7a64e0040f704e02710b3c] mptcp: drop unneeded argument determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 7a486c443c89bd949f7a64e0040f704e02710b3c gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: b9947dccb9c26687b62d9799692cbf3cd08c8d4a18494b131f81c8b134f629ef all runs: OK false negative chance: 0.000 # git bisect bad 7a486c443c89bd949f7a64e0040f704e02710b3c Bisecting: 773 revisions left to test after this (roughly 10 steps) [b8617f8eed84e12c26f2220733280187466a0615] selftests: tc-testing: add tunnel_key "nofrag" test case determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit b8617f8eed84e12c26f2220733280187466a0615 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: b9908db8f3e3943219eafc320574d999e2872344b91e694107605ab71aba1bdc all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good b8617f8eed84e12c26f2220733280187466a0615 Bisecting: 386 revisions left to test after this (roughly 9 steps) [977c4a3e7c89d5b48fdc548773fb9ed3e6c50cf8] net/mlx5: Add new WQE for updating flow table determine whether the revision contains the guilty commit revision b8617f8eed84e12c26f2220733280187466a0615 crashed and is reachable testing commit 977c4a3e7c89d5b48fdc548773fb9ed3e6c50cf8 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 9cb2dc67b138a284c4c23585b03ab3f39d93f37a10350e032698026186b31c73 all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good 977c4a3e7c89d5b48fdc548773fb9ed3e6c50cf8 Bisecting: 193 revisions left to test after this (roughly 8 steps) [9af0f555ae4add25f0950753fb410c509aa71f50] selftests/bpf: Fix conflicts with built-in functions in bench_local_storage_create determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 9af0f555ae4add25f0950753fb410c509aa71f50 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 3b95edba652b757f2f2045fb54d4b2c259d9e30696f8eac9f811581dae400c4c all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good 9af0f555ae4add25f0950753fb410c509aa71f50 Bisecting: 97 revisions left to test after this (roughly 7 steps) [8c5c2a4898e3d6bad86e29d471e023c8a19ba799] bpf, sockmap: Revert buggy deadlock fix in the sockhash and sockmap determine whether the revision contains the guilty commit revision 9af0f555ae4add25f0950753fb410c509aa71f50 crashed and is reachable testing commit 8c5c2a4898e3d6bad86e29d471e023c8a19ba799 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: abefa425995604b6d1edbc880ec062124e270442ccd0561712bfcbdc281482a6 all runs: OK false negative chance: 0.000 # git bisect bad 8c5c2a4898e3d6bad86e29d471e023c8a19ba799 Bisecting: 47 revisions left to test after this (roughly 6 steps) [4daf0b327f2032ecacd2fb00c46999619f530972] Merge branch 'bpf: Improve verifier for cond_op and spilled loop index variables' determine whether the revision contains the guilty commit revision 9af0f555ae4add25f0950753fb410c509aa71f50 crashed and is reachable testing commit 4daf0b327f2032ecacd2fb00c46999619f530972 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 3d44f4aa7c2d8836a740c74ef4166f6fc4eccbd4cbdc78cac100150383db99b4 all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good 4daf0b327f2032ecacd2fb00c46999619f530972 Bisecting: 23 revisions left to test after this (roughly 5 steps) [be983f44274f575e42025130e3c62b8718b0a29a] selftests/bpf: Add testing of log_buf==NULL condition for BPF_PROG_LOAD determine whether the revision contains the guilty commit revision 4899a36f91a9f9b06878471096bd143e7253006d crashed and is reachable testing commit be983f44274f575e42025130e3c62b8718b0a29a gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 27d2d060744a1c17d6c00f8018076a17e937160e1abbce627128a49ed4842f39 all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good be983f44274f575e42025130e3c62b8718b0a29a Bisecting: 11 revisions left to test after this (roughly 4 steps) [d9688f898c08c8f96fb0e7879262877ffd319bfd] selftests/bpf: Test FOU kfuncs for externally controlled ipip devices determine whether the revision contains the guilty commit revision 4daf0b327f2032ecacd2fb00c46999619f530972 crashed and is reachable testing commit d9688f898c08c8f96fb0e7879262877ffd319bfd gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 90e0d8ef47e9dd29d3ec8bc6240a819a22f6cb779f556d1ad16248d0e669598a all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good d9688f898c08c8f96fb0e7879262877ffd319bfd Bisecting: 5 revisions left to test after this (roughly 3 steps) [2995f9a8d427b9ff6f3cf4e85c0f9d4456ef324d] selftests/bpf: Keep the loop in bpf_testmod_loop_test determine whether the revision contains the guilty commit revision 9af0f555ae4add25f0950753fb410c509aa71f50 crashed and is reachable testing commit 2995f9a8d427b9ff6f3cf4e85c0f9d4456ef324d gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 46d3c6f8c995892340dd4be99b39b7c5971cf044fafc7b7575afd0e380c6ac74 all runs: OK false negative chance: 0.000 # git bisect bad 2995f9a8d427b9ff6f3cf4e85c0f9d4456ef324d Bisecting: 2 revisions left to test after this (roughly 2 steps) [5a674611d116a5fc28c5429beea2b78c6e2933ef] selftests/bpf: Fix use of uninitialized op_name in log tests determine whether the revision contains the guilty commit revision d9688f898c08c8f96fb0e7879262877ffd319bfd crashed and is reachable testing commit 5a674611d116a5fc28c5429beea2b78c6e2933ef gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 2bb9bb2f663de3c630a455238845dbfc168951a377eeecc095151a95d2cc9ed5 all runs: OK false negative chance: 0.000 # git bisect bad 5a674611d116a5fc28c5429beea2b78c6e2933ef Bisecting: 0 revisions left to test after this (roughly 1 step) [d319f344561de23e810515d109c7278919bff7b0] mm: Fix copy_from_user_nofault(). determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit d319f344561de23e810515d109c7278919bff7b0 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: cc1b72007debda795f9dbbacfa8842522cc81267879bc8a4d7269b2c9df9d2df all runs: OK false negative chance: 0.000 # git bisect bad d319f344561de23e810515d109c7278919bff7b0 Bisecting: 0 revisions left to test after this (roughly 0 steps) [bbc73e6855b80144cd43d165696f1ff56d6192c9] Merge branch 'Add FOU support for externally controlled ipip devices' determine whether the revision contains the guilty commit revision d9688f898c08c8f96fb0e7879262877ffd319bfd crashed and is reachable testing commit bbc73e6855b80144cd43d165696f1ff56d6192c9 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 569386d6b26c3eaf24cb14089ed9ab9088a00ab7ddf0659f35807e06670b721d all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good bbc73e6855b80144cd43d165696f1ff56d6192c9 d319f344561de23e810515d109c7278919bff7b0 is the first bad commit commit d319f344561de23e810515d109c7278919bff7b0 Author: Alexei Starovoitov Date: Mon Apr 10 19:43:44 2023 +0200 mm: Fix copy_from_user_nofault(). There are several issues with copy_from_user_nofault(): - access_ok() is designed for user context only and for that reason it has WARN_ON_IN_IRQ() which triggers when bpf, kprobe, eprobe and perf on ppc are calling it from irq. - it's missing nmi_uaccess_okay() which is a nop on all architectures except x86 where it's required. The comment in arch/x86/mm/tlb.c explains the details why it's necessary. Calling copy_from_user_nofault() from bpf, [ke]probe without this check is not safe. - __copy_from_user_inatomic() under CONFIG_HARDENED_USERCOPY is calling check_object_size()->__check_object_size()->check_heap_object()->find_vmap_area()->spin_lock() which is not safe to do from bpf, [ke]probe and perf due to potential deadlock. Fix all three issues. At the end the copy_from_user_nofault() becomes equivalent to copy_from_user_nmi() from safety point of view with a difference in the return value. Reported-by: Hsin-Wei Hung Signed-off-by: Alexei Starovoitov Signed-off-by: Florian Lehner Tested-by: Hsin-Wei Hung Tested-by: Florian Lehner Link: https://lore.kernel.org/r/20230410174345.4376-2-dev@der-flo.net Signed-off-by: Alexei Starovoitov mm/maccess.c | 16 +++++++++++----- mm/usercopy.c | 2 +- 2 files changed, 12 insertions(+), 6 deletions(-) accumulated error probability: 0.00 culprit signature: cc1b72007debda795f9dbbacfa8842522cc81267879bc8a4d7269b2c9df9d2df parent signature: 569386d6b26c3eaf24cb14089ed9ab9088a00ab7ddf0659f35807e06670b721d revisions tested: 28, total time: 7h14m48.688500278s (build: 3h11m39.096084967s, test: 3h42m27.980716235s) first good commit: d319f344561de23e810515d109c7278919bff7b0 mm: Fix copy_from_user_nofault(). recipients (to): ["ast@kernel.org" "dev@der-flo.net" "hsinweih@uci.edu"] recipients (cc): []