ci2 starts bisection 2024-05-16 16:54:54.017367591 +0000 UTC m=+109.908544981 bisecting fixing commit since 9465fef4ae351749f7068da8c78af4ca27e61928 building syzkaller on 4320ec32bd44793e077a482003409ae791e1dfea ensuring issue is reproducible on original commit 9465fef4ae351749f7068da8c78af4ca27e61928 testing commit 9465fef4ae351749f7068da8c78af4ca27e61928 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7e324a7b5da1e5ab81cec31ab415f8576d8bc7dbc49d3370775c2c45164735d8 all runs: crashed: WARNING in sock_hash_delete_elem representative crash: WARNING in sock_hash_delete_elem, types: [WARNING] check whether we can drop unnecessary instrumentation disabling configs for [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 9465fef4ae351749f7068da8c78af4ca27e61928 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 46a9c9d078b61887c307bb51ee1ef15011f29cb0794c623282594ee57bb364a5 all runs: OK false negative chance: 0.000 kconfig minimization: base=3703 full=7263 leaves diff=1979 split chunks (needed=false): <1979> split chunk #0 of len 1979 into 5 parts testing without sub-chunk 1/5 testing commit 9465fef4ae351749f7068da8c78af4ca27e61928 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bcec200bb7a6c74a349314594ca0721cf7c9db9d076131db3fedb174de7726fd all runs: crashed: WARNING in sock_hash_delete_elem representative crash: WARNING in sock_hash_delete_elem, types: [WARNING] the chunk can be dropped testing without sub-chunk 2/5 testing commit 9465fef4ae351749f7068da8c78af4ca27e61928 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: da5bba06a2cba377c0ed61a75cbc8d13feff92b93d5ef2eb93ce62db735f8f35 all runs: crashed: WARNING in sock_hash_delete_elem representative crash: WARNING in sock_hash_delete_elem, types: [WARNING] the chunk can be dropped testing without sub-chunk 3/5 testing commit 9465fef4ae351749f7068da8c78af4ca27e61928 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 275efc0f5e1a992ec1c7f1629612a1ce2c907871ce61b5c2b06519fb439a703f all runs: crashed: WARNING in sock_hash_delete_elem representative crash: WARNING in sock_hash_delete_elem, types: [WARNING] the chunk can be dropped testing without sub-chunk 4/5 testing commit 9465fef4ae351749f7068da8c78af4ca27e61928 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8253c3130a4761a4b1f67be736243cbb28fa53f4745389b55536bc54ae286dd6 all runs: crashed: WARNING in sock_hash_delete_elem representative crash: WARNING in sock_hash_delete_elem, types: [WARNING] the chunk can be dropped testing without sub-chunk 5/5 testing commit 9465fef4ae351749f7068da8c78af4ca27e61928 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5ca1ef26931be0b1c1f234adddda050b7f5759f5bb27cd4dd51e69134b6f21c5 all runs: OK false negative chance: 0.000 minimized to 395 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 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_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_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_OF_SIMPLE USB_DWC3_PCI USB_DWC3_ULPI USB_DYNAMIC_MINORS USB_EG20T 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_FOTG210_HCD USB_FOTG210_UDC USB_FTDI_ELAN USB_F_ACM USB_F_ECM USB_F_EEM USB_F_FS USB_F_HID USB_F_MASS_STORAGE USB_F_MIDI 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_GPIO_VBUS 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 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USB_LINK_LAYER_TEST USB_M5602 USB_MA901 USB_MAX3421_HCD USB_MDC800 USB_MICROTEK USB_MR800 USB_MSI2500 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_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_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 X86_X32 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 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] testing current HEAD 284087d4f7d57502b5a41b423b771f16cc6d157a testing commit 284087d4f7d57502b5a41b423b771f16cc6d157a gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9b98b30234ada3b4b8060a03718e2c0327cf8753d3d05076068faf090e7e123c all runs: OK false negative chance: 0.000 # git bisect start 284087d4f7d57502b5a41b423b771f16cc6d157a 9465fef4ae351749f7068da8c78af4ca27e61928 Bisecting: 477 revisions left to test after this (roughly 9 steps) [b34aa1a8c7a79e131185fee4c9ae949bcdce8868] NFSD: Pass the target nfsd_file to nfsd_commit() determine whether the revision contains the guilty commit revision 9465fef4ae351749f7068da8c78af4ca27e61928 crashed and is reachable testing commit b34aa1a8c7a79e131185fee4c9ae949bcdce8868 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 failed building b34aa1a8c7a79e131185fee4c9ae949bcdce8868: fs/lockd/svcsubs.c:213:36: error: implicit declaration of function 'locks_inode_context'; did you mean 'sock_no_connect'? [-Werror=implicit-function-declaration] # git bisect skip b34aa1a8c7a79e131185fee4c9ae949bcdce8868 Bisecting: 476 revisions left to test after this (roughly 9 steps) [a08d9df51c527645168872fe7ab70a79575337d8] NFSD: Revert "NFSD: NFSv4 CLOSE should release an nfsd_file immediately" determine whether the revision contains the guilty commit revision 9465fef4ae351749f7068da8c78af4ca27e61928 crashed and is reachable testing commit a08d9df51c527645168872fe7ab70a79575337d8 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 failed building a08d9df51c527645168872fe7ab70a79575337d8: fs/lockd/svcsubs.c:213:36: error: implicit declaration of function 'locks_inode_context'; did you mean 'sock_no_connect'? [-Werror=implicit-function-declaration] # git bisect skip a08d9df51c527645168872fe7ab70a79575337d8 Bisecting: 476 revisions left to test after this (roughly 9 steps) [8c820f7c8e9b46238d277c575392fe9930207aab] scsi: qla2xxx: Fix off by one in qla_edif_app_getstats() determine whether the revision contains the guilty commit revision 9465fef4ae351749f7068da8c78af4ca27e61928 crashed and is reachable testing commit 8c820f7c8e9b46238d277c575392fe9930207aab gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 57594fc65c621d8fab78809ecdb2b4732699463a271c58a0e85bc27e98b8e21c all runs: OK false negative chance: 0.000 # git bisect bad 8c820f7c8e9b46238d277c575392fe9930207aab Bisecting: 381 revisions left to test after this (roughly 9 steps) [2540b70429984a5877f7a188edbf259de6b56ff6] NFSD: Clean up SPLICE_OK in nfsd4_encode_read() determine whether the revision contains the guilty commit revision 9465fef4ae351749f7068da8c78af4ca27e61928 crashed and is reachable testing commit 2540b70429984a5877f7a188edbf259de6b56ff6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 96207664073adfc9a0b8232151408674aac3864332f89effec3cd2b62ddf3240 all runs: crashed: WARNING in sock_hash_delete_elem representative crash: WARNING in sock_hash_delete_elem, types: [WARNING] # git bisect good 2540b70429984a5877f7a188edbf259de6b56ff6 Bisecting: 190 revisions left to test after this (roughly 8 steps) [0ecd5689767b9bc85f1423b62481ba8c4a3f440d] mmc: core: Initialize mmc_blk_ioc_data determine whether the revision contains the guilty commit revision 9465fef4ae351749f7068da8c78af4ca27e61928 crashed and is reachable testing commit 0ecd5689767b9bc85f1423b62481ba8c4a3f440d gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7fc2a0dfb7e8369e6f37d74b5957167fbf738becbef2d710694da2422d6de22d all runs: crashed: WARNING in sock_hash_delete_elem representative crash: WARNING in sock_hash_delete_elem, types: [WARNING] # git bisect good 0ecd5689767b9bc85f1423b62481ba8c4a3f440d Bisecting: 94 revisions left to test after this (roughly 7 steps) [117d7ef3190cce186c48c70000abe80f3a560b90] ata: sata_sx4: fix pdc20621_get_from_dimm() on 64-bit determine whether the revision contains the guilty commit revision 9465fef4ae351749f7068da8c78af4ca27e61928 crashed and is reachable testing commit 117d7ef3190cce186c48c70000abe80f3a560b90 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: adec9e7eb0dedb292eaec7655c9af2dbacbffb513b4cb666b3e5b9389e4654fb all runs: OK false negative chance: 0.000 # git bisect bad 117d7ef3190cce186c48c70000abe80f3a560b90 Bisecting: 47 revisions left to test after this (roughly 6 steps) [571d80f8a4581ba48fd3dc834e91139ec95abe52] x86/cpufeatures: Add new word for scattered features determine whether the revision contains the guilty commit revision b34aa1a8c7a79e131185fee4c9ae949bcdce8868 crashed and is reachable testing commit 571d80f8a4581ba48fd3dc834e91139ec95abe52 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8c48d89d1cd7b162346c5f5fb937bed47d7bf98a8c93f9275e0c665e6352d33b all runs: crashed: WARNING in sock_hash_delete_elem representative crash: WARNING in sock_hash_delete_elem, types: [WARNING] # git bisect good 571d80f8a4581ba48fd3dc834e91139ec95abe52 Bisecting: 23 revisions left to test after this (roughly 5 steps) [61f5b43bc04eb213c0b5bf594b2a949be86684e3] selftests: reuseaddr_conflict: add missing new line at the end of the output determine whether the revision contains the guilty commit revision b34aa1a8c7a79e131185fee4c9ae949bcdce8868 crashed and is reachable testing commit 61f5b43bc04eb213c0b5bf594b2a949be86684e3 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 81af417aa32ad406bef6dfcc3de3c338b9d25b813fa3737eba9558d784229d87 all runs: OK false negative chance: 0.000 # git bisect bad 61f5b43bc04eb213c0b5bf594b2a949be86684e3 Bisecting: 11 revisions left to test after this (roughly 4 steps) [bd9a25a0228e557209f6e9bec4eae4c6d801e3ea] KVM: x86: Bail to userspace if emulation of atomic user access faults determine whether the revision contains the guilty commit revision b34aa1a8c7a79e131185fee4c9ae949bcdce8868 crashed and is reachable testing commit bd9a25a0228e557209f6e9bec4eae4c6d801e3ea gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cb47924d3a45dc63b1151aafbbc06cec978c2e849108945a74dd270ccd109a17 all runs: crashed: WARNING in sock_hash_delete_elem representative crash: WARNING in sock_hash_delete_elem, types: [WARNING] # git bisect good bd9a25a0228e557209f6e9bec4eae4c6d801e3ea Bisecting: 5 revisions left to test after this (roughly 3 steps) [465abe8a7af489fd6c762257cdc0f07fa01124a3] vboxsf: Avoid an spurious warning if load_nls_xxx() fails determine whether the revision contains the guilty commit revision a08d9df51c527645168872fe7ab70a79575337d8 crashed and is reachable testing commit 465abe8a7af489fd6c762257cdc0f07fa01124a3 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9d32e23bf7a561bdd5319b0bedf2129fb5a473201b34628387638e43b3325bcf all runs: crashed: WARNING in sock_hash_delete_elem representative crash: WARNING in sock_hash_delete_elem, types: [WARNING] # git bisect good 465abe8a7af489fd6c762257cdc0f07fa01124a3 Bisecting: 2 revisions left to test after this (roughly 2 steps) [457c832a0c5db78339146734041faa61a2546737] net: stmmac: fix rx queue priority assignment determine whether the revision contains the guilty commit revision b34aa1a8c7a79e131185fee4c9ae949bcdce8868 crashed and is reachable testing commit 457c832a0c5db78339146734041faa61a2546737 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 81af417aa32ad406bef6dfcc3de3c338b9d25b813fa3737eba9558d784229d87 all runs: OK false negative chance: 0.000 # git bisect bad 457c832a0c5db78339146734041faa61a2546737 Bisecting: 0 revisions left to test after this (roughly 1 step) [a097fc199ab5f4b5392c5144034c0d2148b55a14] net/sched: act_skbmod: prevent kernel-infoleak determine whether the revision contains the guilty commit revision 465abe8a7af489fd6c762257cdc0f07fa01124a3 crashed and is reachable testing commit a097fc199ab5f4b5392c5144034c0d2148b55a14 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 81af417aa32ad406bef6dfcc3de3c338b9d25b813fa3737eba9558d784229d87 all runs: OK false negative chance: 0.000 # git bisect bad a097fc199ab5f4b5392c5144034c0d2148b55a14 Bisecting: 0 revisions left to test after this (roughly 0 steps) [d1e73fb19a4c872d7a399ad3c66e8ca30e0875ec] bpf, sockmap: Prevent lock inversion deadlock in map delete elem determine whether the revision contains the guilty commit revision 571d80f8a4581ba48fd3dc834e91139ec95abe52 crashed and is reachable testing commit d1e73fb19a4c872d7a399ad3c66e8ca30e0875ec gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 81af417aa32ad406bef6dfcc3de3c338b9d25b813fa3737eba9558d784229d87 all runs: OK false negative chance: 0.000 # git bisect bad d1e73fb19a4c872d7a399ad3c66e8ca30e0875ec d1e73fb19a4c872d7a399ad3c66e8ca30e0875ec is the first bad commit commit d1e73fb19a4c872d7a399ad3c66e8ca30e0875ec Author: Jakub Sitnicki Date: Tue Apr 2 12:46:21 2024 +0200 bpf, sockmap: Prevent lock inversion deadlock in map delete elem commit ff91059932401894e6c86341915615c5eb0eca48 upstream. syzkaller started using corpuses where a BPF tracing program deletes elements from a sockmap/sockhash map. Because BPF tracing programs can be invoked from any interrupt context, locks taken during a map_delete_elem operation must be hardirq-safe. Otherwise a deadlock due to lock inversion is possible, as reported by lockdep: CPU0 CPU1 ---- ---- lock(&htab->buckets[i].lock); local_irq_disable(); lock(&host->lock); lock(&htab->buckets[i].lock); lock(&host->lock); Locks in sockmap are hardirq-unsafe by design. We expects elements to be deleted from sockmap/sockhash only in task (normal) context with interrupts enabled, or in softirq context. Detect when map_delete_elem operation is invoked from a context which is _not_ hardirq-unsafe, that is interrupts are disabled, and bail out with an error. Note that map updates are not affected by this issue. BPF verifier does not allow updating sockmap/sockhash from a BPF tracing program today. Fixes: 604326b41a6f ("bpf, sockmap: convert to generic sk_msg interface") Reported-by: xingwei lee Reported-by: yue sun Reported-by: syzbot+bc922f476bd65abbd466@syzkaller.appspotmail.com Reported-by: syzbot+d4066896495db380182e@syzkaller.appspotmail.com Signed-off-by: Jakub Sitnicki Signed-off-by: Daniel Borkmann Tested-by: syzbot+d4066896495db380182e@syzkaller.appspotmail.com Acked-by: John Fastabend Closes: https://syzkaller.appspot.com/bug?extid=d4066896495db380182e Closes: https://syzkaller.appspot.com/bug?extid=bc922f476bd65abbd466 Link: https://lore.kernel.org/bpf/20240402104621.1050319-1-jakub@cloudflare.com Signed-off-by: Greg Kroah-Hartman net/core/sock_map.c | 6 ++++++ 1 file changed, 6 insertions(+) accumulated error probability: 0.00 culprit signature: 81af417aa32ad406bef6dfcc3de3c338b9d25b813fa3737eba9558d784229d87 parent signature: 9d32e23bf7a561bdd5319b0bedf2129fb5a473201b34628387638e43b3325bcf revisions tested: 19, total time: 3h30m30.348561176s (build: 55m44.547086124s, test: 2h28m36.678476056s) first good commit: d1e73fb19a4c872d7a399ad3c66e8ca30e0875ec bpf, sockmap: Prevent lock inversion deadlock in map delete elem recipients (to): ["daniel@iogearbox.net" "gregkh@linuxfoundation.org" "jakub@cloudflare.com" "john.fastabend@gmail.com" "syzbot+d4066896495db380182e@syzkaller.appspotmail.com"] recipients (cc): []