ci starts bisection 2024-06-08 15:39:59.516625027 +0000 UTC m=+77476.737692685 bisecting fixing commit since b401b621758e46812da61fa58a67c3fd8d91de0d building syzkaller on 578f753887693e1375d17cf79dc1c575f6032a5d ensuring issue is reproducible on original commit b401b621758e46812da61fa58a67c3fd8d91de0d testing commit b401b621758e46812da61fa58a67c3fd8d91de0d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b8f92b3adc4f601dccef465930d0821c9fa15bfb7dfd5f196181e0401296f468 all runs: crashed: possible deadlock in vb2_video_unregister_device representative crash: possible deadlock in vb2_video_unregister_device, types: [LOCKDEP] check whether we can drop unnecessary instrumentation disabling configs for [BUG KASAN ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit b401b621758e46812da61fa58a67c3fd8d91de0d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 28f511d3e457af4103305e99927989e0e4280387a5378adbb5fc4d611f25df68 all runs: crashed: possible deadlock in vb2_video_unregister_device representative crash: possible deadlock in vb2_video_unregister_device, types: [LOCKDEP] the bug reproduces without the instrumentation disabling configs for [BUG KASAN ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed kconfig minimization: base=3976 full=7963 leaves diff=2021 split chunks (needed=false): <2021> split chunk #0 of len 2021 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 b401b621758e46812da61fa58a67c3fd8d91de0d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0f2d332fc5818517ea8d0f9a1e6126784fe3ab2f08ff91fba2d484314b76f110 all runs: crashed: possible deadlock in vb2_video_unregister_device representative crash: possible deadlock in vb2_video_unregister_device, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [HANG LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed testing commit b401b621758e46812da61fa58a67c3fd8d91de0d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: dae3d70cce5c68391e3a445141050295e15ec2fcdda530db5f48b21cab354910 all runs: crashed: possible deadlock in vb2_video_unregister_device representative crash: possible deadlock in vb2_video_unregister_device, 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 b401b621758e46812da61fa58a67c3fd8d91de0d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 82d5a14f3fd1842eecf041d541bfe3841216777c7b13a6601128ec60bad08bba all runs: crashed: possible deadlock in vb2_video_unregister_device representative crash: possible deadlock in vb2_video_unregister_device, 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 b401b621758e46812da61fa58a67c3fd8d91de0d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ad07991a07119902bfd55b8583f99964cef604fc94f262c485d5da74b96a0c85 all runs: crashed: possible deadlock in vb2_video_unregister_device representative crash: possible deadlock in vb2_video_unregister_device, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [HANG LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed testing commit b401b621758e46812da61fa58a67c3fd8d91de0d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1bc8ced57d2e849e931cc0891fcc94f2206c39d4283b9971f3a468817cddd88b all runs: OK false negative chance: 0.000 minimized to 401 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_ZSTD DVB_CORE EXTCON FB GPIOLIB HAVE_KVM HID_ZEROPLUS HW_CONSOLE 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_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 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_LIBCOMPOSITE 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_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_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 [HANG LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed testing current HEAD dc772f8237f9b0c9ea3f34d0dc4a57d1f6a5070d testing commit dc772f8237f9b0c9ea3f34d0dc4a57d1f6a5070d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b27081a18b563b75af3bf7a466bdd88909612d06a8d2e1a80da35784eccf85b6 all runs: OK false negative chance: 0.000 # git bisect start dc772f8237f9b0c9ea3f34d0dc4a57d1f6a5070d b401b621758e46812da61fa58a67c3fd8d91de0d Bisecting: 14831 revisions left to test after this (roughly 14 steps) [fe3eb406723c7cc293a7bc99b34dce785e4d282d] Merge tag 'for-net-2024-04-10' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth determine whether the revision contains the guilty commit revision b401b621758e46812da61fa58a67c3fd8d91de0d crashed and is reachable testing commit fe3eb406723c7cc293a7bc99b34dce785e4d282d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b42a9320a32d21224f52bf15cb85a2edb756741c7116b09df6a83936184ddbbb all runs: OK false negative chance: 0.000 # git bisect bad fe3eb406723c7cc293a7bc99b34dce785e4d282d Bisecting: 7493 revisions left to test after this (roughly 13 steps) [e56bc745fa1de77abc2ad8debc4b1b83e0426c49] smb311: additional compression flag defined in updated protocol spec determine whether the revision contains the guilty commit revision b401b621758e46812da61fa58a67c3fd8d91de0d crashed and is reachable testing commit e56bc745fa1de77abc2ad8debc4b1b83e0426c49 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 16735af1fd0859ca1400c646f91c386bfd3174d2f0ebc8047e9cbd1afdbd5793 all runs: crashed: possible deadlock in vb2_video_unregister_device representative crash: possible deadlock in vb2_video_unregister_device, types: [LOCKDEP] # git bisect good e56bc745fa1de77abc2ad8debc4b1b83e0426c49 Bisecting: 3629 revisions left to test after this (roughly 12 steps) [eb7cca1faf9883d7b4da792281147dbedc449238] Merge tag 'media/v6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media determine whether the revision contains the guilty commit revision b401b621758e46812da61fa58a67c3fd8d91de0d crashed and is reachable testing commit eb7cca1faf9883d7b4da792281147dbedc449238 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5fd43a7f6638355a41305af87d349082fdcc4d3b570ac8d2b84c73961443436b all runs: OK false negative chance: 0.000 # git bisect bad eb7cca1faf9883d7b4da792281147dbedc449238 Bisecting: 1952 revisions left to test after this (roughly 11 steps) [a3df5d5422b4edfcfe658d5057e7e059571e32ce] Merge tag 'pinctrl-v6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl determine whether the revision contains the guilty commit revision b401b621758e46812da61fa58a67c3fd8d91de0d crashed and is reachable testing commit a3df5d5422b4edfcfe658d5057e7e059571e32ce gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0477580e448b56b18160351f5f54f27fb48631bc64941ad8ab079ae0598ffd91 all runs: crashed: possible deadlock in vb2_video_unregister_device representative crash: possible deadlock in vb2_video_unregister_device, types: [LOCKDEP] # git bisect good a3df5d5422b4edfcfe658d5057e7e059571e32ce Bisecting: 970 revisions left to test after this (roughly 10 steps) [1bbeaf83dd7b5e3628b98bec66ff8fe2646e14aa] Merge tag 'perf-tools-for-v6.9-2024-03-13' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools determine whether the revision contains the guilty commit revision b401b621758e46812da61fa58a67c3fd8d91de0d crashed and is reachable testing commit 1bbeaf83dd7b5e3628b98bec66ff8fe2646e14aa gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6aaf74e2346d9c98f982dc7894786a99bf50c9c47e02ccce9bded6735aac738b all runs: crashed: possible deadlock in vb2_video_unregister_device representative crash: possible deadlock in vb2_video_unregister_device, types: [LOCKDEP] # git bisect good 1bbeaf83dd7b5e3628b98bec66ff8fe2646e14aa Bisecting: 455 revisions left to test after this (roughly 9 steps) [e5eb28f6d1afebed4bb7d740a797d0390bd3a357] Merge tag 'mm-nonmm-stable-2024-03-14-09-36' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm determine whether the revision contains the guilty commit revision a3df5d5422b4edfcfe658d5057e7e059571e32ce crashed and is reachable testing commit e5eb28f6d1afebed4bb7d740a797d0390bd3a357 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b16aab4b7a40a9e54fee6c1a0c581c33bbe9a5d50d688e6a28e64b3609d7db2a all runs: crashed: possible deadlock in vb2_video_unregister_device representative crash: possible deadlock in vb2_video_unregister_device, types: [LOCKDEP] # git bisect good e5eb28f6d1afebed4bb7d740a797d0390bd3a357 Bisecting: 228 revisions left to test after this (roughly 8 steps) [6fc62efa266b0918c7b226f45c2eccfcf99a6d8e] media: i2c: imx290: Fix IMX920 typo determine whether the revision contains the guilty commit checking the merge base 41bccc98fb7931d63d03f326a746ac4d429c1dd3 no existing result, test the revision testing commit 41bccc98fb7931d63d03f326a746ac4d429c1dd3 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3f2d66cce552cd75d344193d36554d143719aec9ae4e03c49555b43073703c3a all runs: crashed: possible deadlock in vb2_video_unregister_device representative crash: possible deadlock in vb2_video_unregister_device, types: [LOCKDEP] testing commit 6fc62efa266b0918c7b226f45c2eccfcf99a6d8e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: de18c3a2685a905d40afe895c41db0d0428907b4e9511a29b69e7d7bb016c463 all runs: crashed: possible deadlock in vb2_video_unregister_device representative crash: possible deadlock in vb2_video_unregister_device, types: [LOCKDEP] # git bisect good 6fc62efa266b0918c7b226f45c2eccfcf99a6d8e Bisecting: 114 revisions left to test after this (roughly 7 steps) [5e105fb806c622cd8b3da0031e74367a3b8a326b] bcachefs: fix bch2_journal_buf_to_text() determine whether the revision contains the guilty commit revision 41bccc98fb7931d63d03f326a746ac4d429c1dd3 crashed and is reachable testing commit 5e105fb806c622cd8b3da0031e74367a3b8a326b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4a41534be0a14e40ac5bbd832bdc66d3ec7171ee1daf1015bb89407a77ae62e4 all runs: crashed: possible deadlock in vb2_video_unregister_device representative crash: possible deadlock in vb2_video_unregister_device, types: [LOCKDEP] # git bisect good 5e105fb806c622cd8b3da0031e74367a3b8a326b Bisecting: 75 revisions left to test after this (roughly 6 steps) [68bf6bfdcf56b5e6567a668ffc15d5e449356c02] Merge tag 'ext4_for_linus-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 determine whether the revision contains the guilty commit revision 1bbeaf83dd7b5e3628b98bec66ff8fe2646e14aa crashed and is reachable testing commit 68bf6bfdcf56b5e6567a668ffc15d5e449356c02 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cfb05431298b6b7a6e82123be539f42fe43f3b17e5ec8b2d819c9c202f75444d all runs: crashed: possible deadlock in vb2_video_unregister_device representative crash: possible deadlock in vb2_video_unregister_device, types: [LOCKDEP] # git bisect good 68bf6bfdcf56b5e6567a668ffc15d5e449356c02 Bisecting: 37 revisions left to test after this (roughly 5 steps) [cdf6ac2a03d253f05d3e798f60f23dea1b176b92] fuse: get rid of ff->readdir.lock determine whether the revision contains the guilty commit revision b401b621758e46812da61fa58a67c3fd8d91de0d crashed and is reachable testing commit cdf6ac2a03d253f05d3e798f60f23dea1b176b92 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4d56c171ab66b788397b0b2e3224076fa18aff104fbfd8fbff4d71c34f873ec8 all runs: crashed: possible deadlock in vb2_video_unregister_device representative crash: possible deadlock in vb2_video_unregister_device, types: [LOCKDEP] # git bisect good cdf6ac2a03d253f05d3e798f60f23dea1b176b92 Bisecting: 18 revisions left to test after this (roughly 4 steps) [8796f3357f767da75b46fe9cc957546f458f4502] media: ti: j721e-csi2rx: Convert to platform remove callback returning void determine whether the revision contains the guilty commit revision 41bccc98fb7931d63d03f326a746ac4d429c1dd3 crashed and is reachable testing commit 8796f3357f767da75b46fe9cc957546f458f4502 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 81fa6a513cc4daaed27d84ef78a0b3496696535565e7ae7f518b1f3eaef9ea5a all runs: crashed: possible deadlock in vb2_video_unregister_device representative crash: possible deadlock in vb2_video_unregister_device, types: [LOCKDEP] # git bisect good 8796f3357f767da75b46fe9cc957546f458f4502 Bisecting: 8 revisions left to test after this (roughly 3 steps) [c442a42363b2ce5c3eb2b0ff1e052ee956f0a29f] Merge tag '9p-for-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs determine whether the revision contains the guilty commit revision 1bbeaf83dd7b5e3628b98bec66ff8fe2646e14aa crashed and is reachable testing commit c442a42363b2ce5c3eb2b0ff1e052ee956f0a29f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 43127c7022064fefb373c59da8dddfb621e0b2ecae3faa2de9c10ef338f7176a all runs: crashed: possible deadlock in vb2_video_unregister_device representative crash: possible deadlock in vb2_video_unregister_device, types: [LOCKDEP] # git bisect good c442a42363b2ce5c3eb2b0ff1e052ee956f0a29f Bisecting: 4 revisions left to test after this (roughly 2 steps) [b9b683844b01d171a72b9c0419a2d760d946ee12] media: go7007: fix a memleak in go7007_load_encoder determine whether the revision contains the guilty commit revision 8796f3357f767da75b46fe9cc957546f458f4502 crashed and is reachable testing commit b9b683844b01d171a72b9c0419a2d760d946ee12 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 35724d15a202e70e9df315dc4f80664e0dae84f0dfc13d8d055e307fee02a5b1 all runs: crashed: possible deadlock in vb2_video_unregister_device representative crash: possible deadlock in vb2_video_unregister_device, types: [LOCKDEP] # git bisect good b9b683844b01d171a72b9c0419a2d760d946ee12 Bisecting: 2 revisions left to test after this (roughly 1 step) [bfb1b99802ef16045402deb855c197591dc78886] media: mediatek: vcodec: avoid -Wcast-function-type-strict warning determine whether the revision contains the guilty commit revision 8796f3357f767da75b46fe9cc957546f458f4502 crashed and is reachable testing commit bfb1b99802ef16045402deb855c197591dc78886 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1405e1bfe17369bba33c3f339c90ae94314748613f2406fbede812124bd926a3 all runs: crashed: possible deadlock in vb2_video_unregister_device representative crash: possible deadlock in vb2_video_unregister_device, types: [LOCKDEP] # git bisect good bfb1b99802ef16045402deb855c197591dc78886 Bisecting: 0 revisions left to test after this (roughly 1 step) [b14257abe7057def6127f6fb2f14f9adc8acabdb] media: rcar-isp: Disallow unbind of devices determine whether the revision contains the guilty commit revision 8796f3357f767da75b46fe9cc957546f458f4502 crashed and is reachable testing commit b14257abe7057def6127f6fb2f14f9adc8acabdb gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f0a1d89ce3f44ecf752d1667ba828a3fbe623bc8abe18188d7fe037293bb7f03 all runs: OK false negative chance: 0.000 # git bisect bad b14257abe7057def6127f6fb2f14f9adc8acabdb Bisecting: 0 revisions left to test after this (roughly 0 steps) [65e6a2773d655172143cc0b927cdc89549842895] media: usbtv: Remove useless locks in usbtv_video_free() determine whether the revision contains the guilty commit revision 41bccc98fb7931d63d03f326a746ac4d429c1dd3 crashed and is reachable testing commit 65e6a2773d655172143cc0b927cdc89549842895 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7dd07456ddd7c9c54b33d5f3d3074126eba9989fc4493ad35a480c10714a0689 all runs: OK false negative chance: 0.000 # git bisect bad 65e6a2773d655172143cc0b927cdc89549842895 65e6a2773d655172143cc0b927cdc89549842895 is the first bad commit commit 65e6a2773d655172143cc0b927cdc89549842895 Author: Benjamin Gaignard Date: Sat Mar 2 11:37:08 2024 +0100 media: usbtv: Remove useless locks in usbtv_video_free() Remove locks calls in usbtv_video_free() because are useless and may led to a deadlock as reported here: https://syzkaller.appspot.com/x/bisect.txt?x=166dc872180000 Also remove usbtv_stop() call since it will be called when unregistering the device. Before 'c838530d230b' this issue would only be noticed if you disconnect while streaming and now it is noticeable even when disconnecting while not streaming. Fixes: c838530d230b ("media: media videobuf2: Be more flexible on the number of queue stored buffers") Fixes: f3d27f34fdd7 ("[media] usbtv: Add driver for Fushicai USBTV007 video frame grabber") Signed-off-by: Benjamin Gaignard Reviewed-by: Tomasz Figa Tested-by: Hans Verkuil Signed-off-by: Hans Verkuil [hverkuil: fix minor spelling mistake in log message] drivers/media/usb/usbtv/usbtv-video.c | 7 ------- 1 file changed, 7 deletions(-) accumulated error probability: 0.00 culprit signature: 7dd07456ddd7c9c54b33d5f3d3074126eba9989fc4493ad35a480c10714a0689 parent signature: 1405e1bfe17369bba33c3f339c90ae94314748613f2406fbede812124bd926a3 revisions tested: 25, total time: 8h10m13.388407315s (build: 5h45m21.697831251s, test: 2h6m54.78102714s) first good commit: 65e6a2773d655172143cc0b927cdc89549842895 media: usbtv: Remove useless locks in usbtv_video_free() recipients (to): ["benjamin.gaignard@collabora.com" "hverkuil-cisco@xs4all.nl" "tfiga@chromium.org"] recipients (cc): []