ci starts bisection 2024-03-20 06:20:49.090503868 +0000 UTC m=+32650.853794641 bisecting cause commit starting from f6e922365faf4cd576bd1cf3e64b58c8a32e1856 building syzkaller on a485f2390d41decb9fca41e15902295e293464d2 ensuring issue is reproducible on original commit f6e922365faf4cd576bd1cf3e64b58c8a32e1856 testing commit f6e922365faf4cd576bd1cf3e64b58c8a32e1856 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2d290d996cf6017a619fbe06fdd1e29df0200464cf49ffb0292b2887b44c5185 all runs: crashed: possible deadlock in trie_delete_elem representative crash: possible deadlock in trie_delete_elem, types: [LOCKDEP] check whether we can drop unnecessary instrumentation disabling configs for [UBSAN BUG KASAN ATOMIC_SLEEP HANG LEAK], they are not needed testing commit f6e922365faf4cd576bd1cf3e64b58c8a32e1856 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b5621e700e6d3b948b184927c1a261feec5c1eb73313008b2bac8f5e2df46afa all runs: crashed: possible deadlock in trie_delete_elem representative crash: possible deadlock in trie_delete_elem, types: [LOCKDEP] the bug reproduces without the instrumentation disabling configs for [HANG LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed kconfig minimization: base=3937 full=7972 leaves diff=2020 split chunks (needed=false): <2020> split chunk #0 of len 2020 into 5 parts testing without sub-chunk 1/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit f6e922365faf4cd576bd1cf3e64b58c8a32e1856 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 33a028519f925f54a68e6a66a249e673fd855d5d1f93bfd1677b347b8b38e2a3 all runs: crashed: possible deadlock in trie_delete_elem representative crash: possible deadlock in trie_delete_elem, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit f6e922365faf4cd576bd1cf3e64b58c8a32e1856 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0595353ec07c2012dd9f6147304a3c9a4248bd7c85b42423fee8cc3313866acd all runs: crashed: possible deadlock in trie_delete_elem representative crash: possible deadlock in trie_delete_elem, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [KASAN ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit f6e922365faf4cd576bd1cf3e64b58c8a32e1856 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 44e2a9ab1e45631d3050a1291f33d34dcdb8f3961f639772e31aa3a8dec80e19 all runs: crashed: possible deadlock in trie_delete_elem representative crash: possible deadlock in trie_delete_elem, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [HANG LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed testing commit f6e922365faf4cd576bd1cf3e64b58c8a32e1856 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 730083de1e0acc9cfe63a4f58e8b1965fd074f354bc231257434310f382ce9f8 all runs: crashed: possible deadlock in trie_delete_elem representative crash: possible deadlock in trie_delete_elem, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [BUG KASAN ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit f6e922365faf4cd576bd1cf3e64b58c8a32e1856 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 73257bb0ce17834bf625c69df190c061cb3d718e9bffe35baf4f1f7a79c72583 all runs: OK false negative chance: 0.000 minimized to 404 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_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_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_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 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 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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_SHRINKER_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZSMALLOC] disabling configs for [KASAN ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed picked [v6.8 v6.7 v6.6 v6.4 v6.2 v6.0 v5.18 v5.16 v5.13 v5.10 v5.7 v5.4 v5.1 v4.19] out of 31 release tags testing release v6.8 testing commit e8f897f4afef0031fe618a8e94127a0934896aba gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 95edce6bd13c71fbb462d02bb43a7ee1a16a804b59a899ead9a310b3f8109a26 all runs: crashed: possible deadlock in trie_delete_elem representative crash: possible deadlock in trie_delete_elem, types: [LOCKDEP] testing release v6.7 testing commit 0dd3ee31125508cd67f7e7172247f05b7fd1753a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5a835e10a5d6f9302df3b5447857dc0e03c213ac442e1414cb7d1ce1fd3ee1d3 all runs: crashed: possible deadlock in trie_delete_elem representative crash: possible deadlock in trie_delete_elem, types: [LOCKDEP] testing release v6.6 testing commit ffc253263a1375a65fa6c9f62a893e9767fbebfa gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e7e7315feba5b042daf23814c6da21d78550d56ada58ef638812f959144ca7c6 all runs: crashed: possible deadlock in trie_delete_elem representative crash: possible deadlock in trie_delete_elem, types: [LOCKDEP] testing release v6.4 testing commit 6995e2de6891c724bfeb2db33d7b87775f913ad1 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a4ba221cc8bc085dcc7cb1b605eb28e38970851ee3018cbd4189b430a6f65269 all runs: crashed: possible deadlock in trie_delete_elem representative crash: possible deadlock in trie_delete_elem, types: [LOCKDEP] testing release v6.2 testing commit c9c3395d5e3dcc6daee66c6908354d47bf98cb0c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0aa956b2e988e48e914b1324390d6f0dfa1340804ce92e1cc30ac9aab2aeb77a all runs: crashed: possible deadlock in trie_delete_elem representative crash: possible deadlock in trie_delete_elem, types: [LOCKDEP] testing release v6.0 testing commit 4fe89d07dcc2804c8b562f6c7896a45643d34b2f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f4103f54b2d6a9d1cd8fec49caa9d484bfde494636f87e8e752a8d9d6879e48c all runs: crashed: possible deadlock in trie_delete_elem representative crash: possible deadlock in trie_delete_elem, types: [LOCKDEP] testing release v5.18 testing commit 4b0986a3613c92f4ec1bdc7f60ec66fea135991f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 36422f35bc3b1e4d390c13e6cccc8c928f415e65e41cf1b40785ea12b9bcb72a all runs: crashed: possible deadlock in trie_delete_elem representative crash: possible deadlock in trie_delete_elem, types: [LOCKDEP] testing release v5.16 testing commit df0cc57e057f18e44dac8e6c18aba47ab53202f9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c7376bcccb8ba01320fbf247fadee7775de151986c3d8e9e886d0a891a2a683a all runs: crashed: possible deadlock in trie_delete_elem representative crash: possible deadlock in trie_delete_elem, types: [LOCKDEP] testing release v5.13 testing commit 62fb9874f5da54fdb243003b386128037319b219 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6ece8a47fe5f4f0f82c1a9505c4f8c2eadf3e67f4718e4f590602ec66b7b6a43 all runs: crashed: possible deadlock in trie_delete_elem representative crash: possible deadlock in trie_delete_elem, types: [LOCKDEP] testing release v5.10 testing commit 2c85ebc57b3e1817b6ce1a6b703928e113a90442 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f28db222baa8929d6fde0961c5053b71cd3accc30c522d7856599afbb151d824 all runs: OK false negative chance: 0.000 # git bisect start 62fb9874f5da54fdb243003b386128037319b219 2c85ebc57b3e1817b6ce1a6b703928e113a90442 Bisecting: 23399 revisions left to test after this (roughly 15 steps) [d6560052c2f73db59834e9a3c0aba20579aa7059] Merge tag 'regulator-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator testing commit d6560052c2f73db59834e9a3c0aba20579aa7059 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: eee109fd467d3bb4e4f13c35b3091864991bfcad6940f065083507700961c89e all runs: OK false negative chance: 0.000 # git bisect good d6560052c2f73db59834e9a3c0aba20579aa7059 Bisecting: 12060 revisions left to test after this (roughly 14 steps) [3aa139aa9fdc138a84243dc49dc18d9b40e1c6e4] Merge tag 'media/v5.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media testing commit 3aa139aa9fdc138a84243dc49dc18d9b40e1c6e4 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8631967c727b0d1019c83633e225f37bcf2946b7e50b241ed9a3961337e7631b all runs: crashed: possible deadlock in trie_delete_elem representative crash: possible deadlock in trie_delete_elem, types: [LOCKDEP] # git bisect bad 3aa139aa9fdc138a84243dc49dc18d9b40e1c6e4 Bisecting: 5667 revisions left to test after this (roughly 13 steps) [39b53e23532f5da13757d88eeb1290da864bfdf4] Merge tag 'soundwire-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire into char-misc-next testing commit 39b53e23532f5da13757d88eeb1290da864bfdf4 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 97251ed15f8969998d3f2b2f5dfe003db4e373524070817e1466b2297a00c009 all runs: crashed: possible deadlock in trie_delete_elem representative crash: possible deadlock in trie_delete_elem, types: [LOCKDEP] # git bisect bad 39b53e23532f5da13757d88eeb1290da864bfdf4 Bisecting: 2775 revisions left to test after this (roughly 12 steps) [4c48faba5b7f18fb53e4aeeb768932f17c9da1ed] Merge branch 'akpm' (patches from Andrew) testing commit 4c48faba5b7f18fb53e4aeeb768932f17c9da1ed gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 253b4fc2ae985ce5927088e733b7b9878920ac0d979fc45a3e33313de89f9640 all runs: OK false negative chance: 0.000 # git bisect good 4c48faba5b7f18fb53e4aeeb768932f17c9da1ed Bisecting: 1386 revisions left to test after this (roughly 11 steps) [a74e6a014c9d4d4161061f770c9b4f98372ac778] Merge tag 's390-5.12-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux testing commit a74e6a014c9d4d4161061f770c9b4f98372ac778 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: dd5f4aa10fcd991e78e1099d922d14f2a22929f4e9f741e432b58b75d9ec1b29 all runs: crashed: possible deadlock in trie_delete_elem representative crash: possible deadlock in trie_delete_elem, types: [LOCKDEP] # git bisect bad a74e6a014c9d4d4161061f770c9b4f98372ac778 Bisecting: 698 revisions left to test after this (roughly 10 steps) [efba6d3a7c4bb59f0750609fae0f9644d82304b6] Merge tag 'for-5.12/io_uring-2021-02-25' of git://git.kernel.dk/linux-block testing commit efba6d3a7c4bb59f0750609fae0f9644d82304b6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c89bc5a76c77db6e02582afec5ee0784d83cf2e3576b4bf6bbe3e442033d07ff all runs: crashed: possible deadlock in trie_delete_elem representative crash: possible deadlock in trie_delete_elem, types: [LOCKDEP] # git bisect bad efba6d3a7c4bb59f0750609fae0f9644d82304b6 Bisecting: 347 revisions left to test after this (roughly 9 steps) [ffc1759676bed0bff046427dd7d00cb68660190d] Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost testing commit ffc1759676bed0bff046427dd7d00cb68660190d gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 93096170cd6783ae9198e81a99a2522430c8af7e7c4f70e261cb6f7f1761d6c9 all runs: crashed: possible deadlock in trie_delete_elem representative crash: possible deadlock in trie_delete_elem, types: [LOCKDEP] # git bisect bad ffc1759676bed0bff046427dd7d00cb68660190d Bisecting: 173 revisions left to test after this (roughly 8 steps) [268f77b5250998b871fa54a2a9703871fb44544e] Merge tag 'acpi-5.12-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm testing commit 268f77b5250998b871fa54a2a9703871fb44544e gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6f8edc70c1e75195cd3a0a843785a098a555f964c313bda81a502f36af7f4572 all runs: OK false negative chance: 0.000 # git bisect good 268f77b5250998b871fa54a2a9703871fb44544e Bisecting: 108 revisions left to test after this (roughly 7 steps) [d153e8c156dafeb847fd655f416cf81c007e8706] Merge tag 'drm-intel-next-fixes-2021-02-25' of git://anongit.freedesktop.org/drm/drm-intel into drm-next testing commit d153e8c156dafeb847fd655f416cf81c007e8706 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b1f3986865f2ecd4fadab8dc459616d7298dd7b097dbdff1627fa1d90523c2ce all runs: OK false negative chance: 0.000 # git bisect good d153e8c156dafeb847fd655f416cf81c007e8706 Bisecting: 54 revisions left to test after this (roughly 6 steps) [8f1c0fd2c84c8bf738b7139d09d4ea53027f47c3] ibmvnic: fix a race between open and reset testing commit 8f1c0fd2c84c8bf738b7139d09d4ea53027f47c3 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 44141400e3222729a679da4239686cd244634ea87dcc37388c3820baf9ff6b89 all runs: OK false negative chance: 0.000 # git bisect good 8f1c0fd2c84c8bf738b7139d09d4ea53027f47c3 Bisecting: 27 revisions left to test after this (roughly 5 steps) [a6829c350ec6bec47752826c9738122308e1588c] virtio_input: Prevent EV_MSC/MSC_TIMESTAMP loop storm for MT. testing commit a6829c350ec6bec47752826c9738122308e1588c gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2aaa06fd6ec04d8ad0a0edcdeefd4127237f90001c5cbd9a62064096d8b1a826 all runs: crashed: possible deadlock in trie_delete_elem representative crash: possible deadlock in trie_delete_elem, types: [LOCKDEP] # git bisect bad a6829c350ec6bec47752826c9738122308e1588c Bisecting: 13 revisions left to test after this (roughly 4 steps) [1a5c85f16594416df258fe38ec05e0dd05846479] virtio-pci-modern: introduce helper to set config vector testing commit 1a5c85f16594416df258fe38ec05e0dd05846479 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 58fd065194dff30ab4419326156da3ec17d57c67c27bb233dafe7d9683bc7e3a all runs: crashed: possible deadlock in trie_delete_elem representative crash: possible deadlock in trie_delete_elem, types: [LOCKDEP] # git bisect bad 1a5c85f16594416df258fe38ec05e0dd05846479 Bisecting: 6 revisions left to test after this (roughly 3 steps) [bc0d90ee021f1baecd6aaa010d787eb373aa74dd] vdpa: Enable user to query vdpa device info testing commit bc0d90ee021f1baecd6aaa010d787eb373aa74dd gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4abe516ba96f39194be3a96d9de517777cd00f5f174e8059bc6b9e2aaa264191 all runs: OK false negative chance: 0.000 # git bisect good bc0d90ee021f1baecd6aaa010d787eb373aa74dd Bisecting: 3 revisions left to test after this (roughly 2 steps) [64f2087aaa2c2a504f637736f48e71da0cd4afe0] virtio-pci: do not access iomem via struct virtio_pci_device directly testing commit 64f2087aaa2c2a504f637736f48e71da0cd4afe0 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2f2bec567cbd3f96e90f54acf13ec6dedec8cd0c8bb9349c7a4604ed0201a0d2 all runs: crashed: possible deadlock in trie_delete_elem representative crash: possible deadlock in trie_delete_elem, types: [LOCKDEP] # git bisect bad 64f2087aaa2c2a504f637736f48e71da0cd4afe0 Bisecting: 0 revisions left to test after this (roughly 1 step) [489084dd3f7e4bd649814bd62839aef4456659e8] vhost scsi: alloc vhost_scsi with kvzalloc() to avoid delay testing commit 489084dd3f7e4bd649814bd62839aef4456659e8 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 37aab85cf3aa4e16bc8aa5804c6ecce92d7c2f5af52399f3ace429c95485479f all runs: crashed: possible deadlock in trie_delete_elem representative crash: possible deadlock in trie_delete_elem, types: [LOCKDEP] # git bisect bad 489084dd3f7e4bd649814bd62839aef4456659e8 Bisecting: 0 revisions left to test after this (roughly 0 steps) [a3c06ae158dd6fa8336157c31d9234689d068d02] vdpa_sim_net: Add support for user supported devices testing commit a3c06ae158dd6fa8336157c31d9234689d068d02 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 37aab85cf3aa4e16bc8aa5804c6ecce92d7c2f5af52399f3ace429c95485479f all runs: crashed: possible deadlock in trie_delete_elem representative crash: possible deadlock in trie_delete_elem, types: [LOCKDEP] # git bisect bad a3c06ae158dd6fa8336157c31d9234689d068d02 a3c06ae158dd6fa8336157c31d9234689d068d02 is the first bad commit commit a3c06ae158dd6fa8336157c31d9234689d068d02 Author: Parav Pandit Date: Tue Jan 5 12:32:03 2021 +0200 vdpa_sim_net: Add support for user supported devices Enable user to create vdpasim net simulate devices. Show vdpa management device that supports creating, deleting vdpa devices. $ vdpa mgmtdev show vdpasim_net: supported_classes net $ vdpa mgmtdev show -jp { "show": { "vdpasim_net": { "supported_classes": { "net" } } } Create a vdpa device of type networking named as "foo2" from the management device vdpasim: $ vdpa dev add mgmtdev vdpasim_net name foo2 Show the newly created vdpa device by its name: $ vdpa dev show foo2 foo2: type network mgmtdev vdpasim_net vendor_id 0 max_vqs 2 max_vq_size 256 $ vdpa dev show foo2 -jp { "dev": { "foo2": { "type": "network", "mgmtdev": "vdpasim_net", "vendor_id": 0, "max_vqs": 2, "max_vq_size": 256 } } } Delete the vdpa device after its use: $ vdpa dev del foo2 Signed-off-by: Parav Pandit Reviewed-by: Eli Cohen Acked-by: Jason Wang Link: https://lore.kernel.org/r/20210105103203.82508-7-parav@nvidia.com Signed-off-by: Michael S. Tsirkin drivers/vdpa/vdpa_sim/vdpa_sim.c | 3 +- drivers/vdpa/vdpa_sim/vdpa_sim.h | 2 + drivers/vdpa/vdpa_sim/vdpa_sim_net.c | 96 ++++++++++++++++++++++++++---------- 3 files changed, 75 insertions(+), 26 deletions(-) accumulated error probability: 0.00 culprit signature: 37aab85cf3aa4e16bc8aa5804c6ecce92d7c2f5af52399f3ace429c95485479f parent signature: 4abe516ba96f39194be3a96d9de517777cd00f5f174e8059bc6b9e2aaa264191 revisions tested: 33, total time: 7h58m37.824334763s (build: 3h40m27.715469625s, test: 2h51m15.197385773s) first bad commit: a3c06ae158dd6fa8336157c31d9234689d068d02 vdpa_sim_net: Add support for user supported devices recipients (to): ["elic@nvidia.com" "jasowang@redhat.com" "mst@redhat.com" "parav@nvidia.com"] recipients (cc): [] crash: possible deadlock in trie_delete_elem ============================================ WARNING: possible recursive locking detected 5.11.0-syzkaller #0 Not tainted -------------------------------------------- syz-executor.0/2982 is trying to acquire lock: ffff8881170d77b8 (&trie->lock){....}-{2:2}, at: trie_delete_elem+0x3a/0x1f0 kernel/bpf/lpm_trie.c:445 but task is already holding lock: ffff8881170d79b8 (&trie->lock){....}-{2:2}, at: trie_update_elem+0x44/0x350 kernel/bpf/lpm_trie.c:318 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&trie->lock); lock(&trie->lock); *** DEADLOCK *** May be due to missing lock nesting notation 3 locks held by syz-executor.0/2982: #0: ffffffff82f86d40 (rcu_read_lock){....}-{1:2}, at: bpf_map_update_value.isra.0+0x271/0x460 kernel/bpf/syscall.c:194 #1: ffff8881170d79b8 (&trie->lock){....}-{2:2}, at: trie_update_elem+0x44/0x350 kernel/bpf/lpm_trie.c:318 #2: ffffffff82f86d40 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run4+0x0/0x180 kernel/trace/bpf_trace.c:2123 stack backtrace: CPU: 0 PID: 2982 Comm: syz-executor.0 Not tainted 5.11.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x77/0x97 lib/dump_stack.c:120 print_deadlock_bug kernel/locking/lockdep.c:2761 [inline] check_deadlock kernel/locking/lockdep.c:2804 [inline] validate_chain kernel/locking/lockdep.c:3595 [inline] __lock_acquire.cold+0x13a/0x2b9 kernel/locking/lockdep.c:4832 lock_acquire kernel/locking/lockdep.c:5442 [inline] lock_acquire+0xbf/0x3b0 kernel/locking/lockdep.c:5407 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x36/0x50 kernel/locking/spinlock.c:159 trie_delete_elem+0x3a/0x1f0 kernel/bpf/lpm_trie.c:445 ____bpf_map_delete_elem kernel/bpf/helpers.c:65 [inline] bpf_map_delete_elem+0x21/0x30 kernel/bpf/helpers.c:62 ___bpf_prog_run+0xabd/0x1450 kernel/bpf/core.c:1513 __bpf_prog_run32+0x34/0x60 kernel/bpf/core.c:1678 bpf_dispatcher_nop_func include/linux/bpf.h:651 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2085 [inline] bpf_trace_run4+0x7f/0x180 kernel/trace/bpf_trace.c:2124 trace_mm_page_alloc include/trace/events/kmem.h:193 [inline] __alloc_pages_nodemask+0x28d/0x390 mm/page_alloc.c:5023 __alloc_pages include/linux/gfp.h:511 [inline] __alloc_pages_node include/linux/gfp.h:524 [inline] alloc_pages_node include/linux/gfp.h:538 [inline] kmalloc_large_node+0x4c/0xf0 mm/slub.c:3999 __kmalloc_node+0x2f3/0x400 mm/slub.c:4015 kmalloc_node include/linux/slab.h:575 [inline] bpf_map_kmalloc_node+0x3d/0x90 kernel/bpf/syscall.c:410 lpm_trie_node_alloc kernel/bpf/lpm_trie.c:285 [inline] trie_update_elem+0x83/0x350 kernel/bpf/lpm_trie.c:327 bpf_map_update_value.isra.0+0x2c8/0x460 kernel/bpf/syscall.c:201 map_update_elem kernel/bpf/syscall.c:1124 [inline] __do_sys_bpf+0x18a1/0x1f30 kernel/bpf/syscall.c:4370 do_syscall_64+0x34/0x50 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7ff03ce4dda9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff03c9cf0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007ff03cf7bf80 RCX: 00007ff03ce4dda9 RDX: 0000000000000020 RSI: 0000000020000940 RDI: 0000000000000002 RBP: 00007ff03ce9a47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007ff03cf7bf80 R15: 00007ffd5c8afbc8