ci2 starts bisection 2024-12-06 18:28:24.189042249 +0000 UTC m=+112.989707981 bisecting fixing commit since 0a51d2d4527b43c5e467ffa6897deefeaf499358 building syzkaller on 68da6d951a345757b69b764ceb8dda1e9d65b038 ensuring issue is reproducible on original commit 0a51d2d4527b43c5e467ffa6897deefeaf499358 testing commit 0a51d2d4527b43c5e467ffa6897deefeaf499358 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 91bdbb44fbf1caa1e5cfcc81e75340a9d97a38831b24fe856f78d2451726dc8e all runs: crashed: possible deadlock in htab_map_delete_elem representative crash: possible deadlock in htab_map_delete_elem, types: [LOCKDEP] check whether we can drop unnecessary instrumentation disabling configs for [LEAK UBSAN BUG KASAN ATOMIC_SLEEP HANG], they are not needed testing commit 0a51d2d4527b43c5e467ffa6897deefeaf499358 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5e7632426dee95b6aac9d55e9a4d8b3e364be4fe6643c5cda6e75392c845e9c3 all runs: crashed: possible deadlock in htab_map_delete_elem representative crash: possible deadlock in htab_map_delete_elem, types: [LOCKDEP] the bug reproduces without the instrumentation disabling configs for [LEAK UBSAN BUG KASAN ATOMIC_SLEEP HANG], they are not needed kconfig minimization: base=3706 full=7302 leaves diff=2037 split chunks (needed=false): <2037> split chunk #0 of len 2037 into 5 parts testing without sub-chunk 1/5 disabling configs for [BUG KASAN ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 0a51d2d4527b43c5e467ffa6897deefeaf499358 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1ea60d73c12933b9b36f80b89f32782cf973ee1c4a24b2f1b1daa9b77e00742c all runs: crashed: possible deadlock in htab_map_delete_elem representative crash: possible deadlock in htab_map_delete_elem, 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 0a51d2d4527b43c5e467ffa6897deefeaf499358 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 43fbc6878be7e2b045f73d4162153e4540f2c67b1432c79dfdd465d2b8b584f2 all runs: crashed: possible deadlock in htab_map_delete_elem representative crash: possible deadlock in htab_map_delete_elem, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [HANG LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed testing commit 0a51d2d4527b43c5e467ffa6897deefeaf499358 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ca7b9c8a57af022cc7f747daddc22eabc57cd9b940bc1ba12e475433fd0176d3 all runs: crashed: possible deadlock in htab_map_delete_elem representative crash: possible deadlock in htab_map_delete_elem, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [LEAK UBSAN BUG KASAN ATOMIC_SLEEP HANG], they are not needed testing commit 0a51d2d4527b43c5e467ffa6897deefeaf499358 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b9f3470561446ddbd32f09b210e6742a2c0fdfa3f4eb8513f6331ca4312b4bb4 all runs: crashed: possible deadlock in htab_map_delete_elem representative crash: possible deadlock in htab_map_delete_elem, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [KASAN ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 0a51d2d4527b43c5e467ffa6897deefeaf499358 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1bf951d6dce21a6623fdcf58296bf7f42e96f44c6c8d7ec4cd837d7aba3b9d5f all runs: OK false negative chance: 0.000 minimized to 405 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_PRINTER USB_CONFIGFS_F_TCM USB_CONFIGFS_F_UAC1 USB_CONFIGFS_F_UAC1_LEGACY USB_CONFIGFS_F_UAC2 USB_CONFIGFS_F_UVC USB_CONFIGFS_MASS_STORAGE USB_CONFIGFS_NCM USB_CONFIGFS_OBEX USB_CONFIGFS_PHONET USB_CONFIGFS_RNDIS USB_CONFIGFS_SERIAL USB_CONN_GPIO USB_CXACRU USB_CYPRESS_CY7C63 USB_CYTHERM USB_DSBR USB_DUMMY_HCD USB_DWC2 USB_DWC2_HOST USB_DWC2_PCI USB_DWC3 USB_DWC3_GADGET USB_DWC3_HAPS USB_DWC3_OF_SIMPLE USB_DWC3_PCI USB_DWC3_ULPI USB_DYNAMIC_MINORS USB_EG20T USB_EHCI_FSL USB_EHCI_HCD_PLATFORM USB_EHCI_ROOT_HUB_TT USB_EHSET_TEST_FIXTURE USB_EMI26 USB_EMI62 USB_EPSON2888 USB_EZUSB_FX2 USB_FEW_INIT_RETRIES USB_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 USB_GSPCA_MARS USB_GSPCA_MR97310A USB_GSPCA_NW80X USB_GSPCA_OV519 USB_GSPCA_OV534 USB_GSPCA_OV534_9 USB_GSPCA_PAC207 USB_GSPCA_PAC7302 USB_GSPCA_PAC7311 USB_GSPCA_SE401 USB_GSPCA_SN9C2028 USB_GSPCA_SN9C20X USB_GSPCA_SONIXB USB_GSPCA_SONIXJ USB_GSPCA_SPCA1528 USB_GSPCA_SPCA500 USB_GSPCA_SPCA501 USB_GSPCA_SPCA505 USB_GSPCA_SPCA506 USB_GSPCA_SPCA508 USB_GSPCA_SPCA561 USB_GSPCA_SQ905 USB_GSPCA_SQ905C USB_GSPCA_SQ930X USB_GSPCA_STK014 USB_GSPCA_STK1135 USB_GSPCA_STV0680 USB_GSPCA_SUNPLUS USB_GSPCA_T613 USB_GSPCA_TOPRO USB_GSPCA_TOUPTEK USB_GSPCA_TV8532 USB_GSPCA_VC032X USB_GSPCA_VICAM USB_GSPCA_XIRLINK_CIT USB_GSPCA_ZC3XX USB_HACKRF USB_HCD_BCMA USB_HCD_SSB USB_HSIC_USB3503 USB_HSIC_USB4604 USB_HSO USB_HUB_USB251XB USB_IDMOUSE USB_IOWARRIOR USB_IPHETH USB_ISIGHTFW USB_ISP116X_HCD USB_ISP1301 USB_ISP1760 USB_ISP1760_DUAL_ROLE USB_ISP1760_HCD USB_ISP1761_UDC USB_KAWETH USB_KC2190 USB_KEENE USB_LAN78XX USB_LCD USB_LD USB_LEDS_TRIGGER_USBPORT USB_LED_TRIG USB_LEGOTOWER USB_LGM_PHY USB_LIBCOMPOSITE USB_LINK_LAYER_TEST USB_M5602 USB_MA901 USB_MAX3420_UDC USB_MAX3421_HCD USB_MDC800 USB_MICROTEK USB_MR800 USB_MSI2500 USB_MUSB_DUAL_ROLE USB_MUSB_HDRC USB_MV_U3D USB_MV_UDC USB_NET2272 USB_NET2272_DMA USB_NET2280 USB_NET_AQC111 USB_NET_AX88179_178A USB_NET_AX8817X USB_NET_CDCETHER USB_NET_CDC_EEM USB_NET_CDC_MBIM USB_NET_CDC_NCM USB_NET_CDC_SUBSET USB_NET_CDC_SUBSET_ENABLE USB_NET_CH9200 USB_NET_CX82310_ETH USB_NET_DM9601 USB_NET_GL620A USB_NET_HUAWEI_CDC_NCM USB_NET_INT51X1 USB_NET_KALMIA USB_NET_MCS7830 USB_NET_NET1080 USB_NET_PLUSB USB_NET_QMI_WWAN USB_NET_RNDIS_HOST USB_NET_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_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 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 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] disabling configs for [HANG LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed determining the merge base between 0a51d2d4527b43c5e467ffa6897deefeaf499358 and b8f52214c61a5b99a54168145378e91b40d10c90 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: 2dc6f7f9a93fb8160530fa251e2ed330ea7a12613fdf1816784da6d2831dcecd all runs: crashed: possible deadlock in htab_map_delete_elem representative crash: possible deadlock in htab_map_delete_elem, types: [LOCKDEP] testing current HEAD b8f52214c61a5b99a54168145378e91b40d10c90 testing commit b8f52214c61a5b99a54168145378e91b40d10c90 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6d648ea58d42880ef1153a6efb691829edf0ecbcf2fd4972d1c4cd9066212c69 all runs: OK false negative chance: 0.000 # git bisect start b8f52214c61a5b99a54168145378e91b40d10c90 8bb7eca972ad531c9b149c0a51ab43a417385813 Bisecting: 139431 revisions left to test after this (roughly 17 steps) [54bdf8a39931cf8fe2c74432e715353d9a1c1107] Merge tag 'phy-for-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 54bdf8a39931cf8fe2c74432e715353d9a1c1107 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9a712d34b1879bceeb9dc9de0bf6daf88b9555c9f75a70bceee23fbd5d18439a all runs: OK false negative chance: 0.000 # git bisect bad 54bdf8a39931cf8fe2c74432e715353d9a1c1107 Bisecting: 69765 revisions left to test after this (roughly 16 steps) [798cd57cd5f871452461746032cf6ee50b0fd69a] drm/amd/display: restore code for plane with no modifiers determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 798cd57cd5f871452461746032cf6ee50b0fd69a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: dd2c32deccdff3d35609bc4006bacdd899df3eb36a81a6b9c8dffc423f590953 all runs: crashed: possible deadlock in htab_map_delete_elem representative crash: possible deadlock in htab_map_delete_elem, types: [LOCKDEP] # git bisect good 798cd57cd5f871452461746032cf6ee50b0fd69a Bisecting: 34897 revisions left to test after this (roughly 15 steps) [87be949912eedb73690d8eaeb086f24bfe17438d] Merge tag 'xfs-6.2-merge-8' 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 87be949912eedb73690d8eaeb086f24bfe17438d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7d4da612a5a279bd18ae982563c1ba1739479bf32387d1ab6f5d4268d7276bda all runs: OK false negative chance: 0.000 # git bisect bad 87be949912eedb73690d8eaeb086f24bfe17438d Bisecting: 17558 revisions left to test after this (roughly 14 steps) [29926f1cd3535f565f200430d5b6a794543fe130] fbdev: mb862xx: Fix check of return value from irq_of_parse_and_map() determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 29926f1cd3535f565f200430d5b6a794543fe130 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 932a8d27d0a8f5f060eb5e2029a83feb95a923bf45d5126a82c7068a283dc9c1 all runs: OK false negative chance: 0.000 # git bisect bad 29926f1cd3535f565f200430d5b6a794543fe130 Bisecting: 8660 revisions left to test after this (roughly 13 steps) [25100377a21ad40dae8be5a3ed361b87acec1479] Merge tag 'drm-intel-fixes-2022-09-15' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 25100377a21ad40dae8be5a3ed361b87acec1479 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: aa683aa1bf174b584a9851299ff0b2ef1db042cd63fbe2f35aff674eb245cfff all runs: crashed: possible deadlock in htab_map_delete_elem representative crash: possible deadlock in htab_map_delete_elem, types: [LOCKDEP] # git bisect good 25100377a21ad40dae8be5a3ed361b87acec1479 Bisecting: 4766 revisions left to test after this (roughly 12 steps) [a47e60729d9624e931f988709ab76e043e2ee8b9] Merge tag 'backlight-next-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight determine whether the revision contains the guilty commit revision 25100377a21ad40dae8be5a3ed361b87acec1479 crashed and is reachable testing commit a47e60729d9624e931f988709ab76e043e2ee8b9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3a932a249caea3d14ba3dd6a1a3fe5c78f14185e343376d133d55c3f0c86a27d all runs: OK false negative chance: 0.000 # git bisect bad a47e60729d9624e931f988709ab76e043e2ee8b9 Bisecting: 1947 revisions left to test after this (roughly 11 steps) [0f5ef005310d4820926c76bc1e94d4d2a0e49d97] ip6_vti:Remove the space before the comma determine whether the revision contains the guilty commit revision 798cd57cd5f871452461746032cf6ee50b0fd69a crashed and is reachable testing commit 0f5ef005310d4820926c76bc1e94d4d2a0e49d97 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e2804d3ff322ec4bb1cf432bc9173c813584ef122e8fda5815cfb9b8c16e4a39 all runs: OK false negative chance: 0.000 # git bisect bad 0f5ef005310d4820926c76bc1e94d4d2a0e49d97 Bisecting: 972 revisions left to test after this (roughly 10 steps) [742b7072764af42207d14c60bd1c149e6b333acf] nfp: flower: support vlan action in pre_ct determine whether the revision contains the guilty commit revision 798cd57cd5f871452461746032cf6ee50b0fd69a crashed and is reachable testing commit 742b7072764af42207d14c60bd1c149e6b333acf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 98047fa049ff1c00edcbf95d74e4744edbeeb917dd471aaf7cfff7cc39a10bcb all runs: OK false negative chance: 0.000 # git bisect bad 742b7072764af42207d14c60bd1c149e6b333acf Bisecting: 522 revisions left to test after this (roughly 9 steps) [aa3fab0110580aaeb9422e73b031822990651552] Merge branch 'net_sched-redundant-resource-cleanups' determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit aa3fab0110580aaeb9422e73b031822990651552 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e088ac7a275a1811486dc74e3c6a6a3ca27048a105e14ffcf58fcd98120f5d8c all runs: crashed: possible deadlock in htab_map_delete_elem representative crash: possible deadlock in htab_map_delete_elem, types: [LOCKDEP] # git bisect good aa3fab0110580aaeb9422e73b031822990651552 Bisecting: 261 revisions left to test after this (roughly 8 steps) [016eb59012b576f5a7b7b415d757717dc8cb3c6b] Merge branch 'macsec-offload-mlx5' determine whether the revision contains the guilty commit revision aa3fab0110580aaeb9422e73b031822990651552 crashed and is reachable testing commit 016eb59012b576f5a7b7b415d757717dc8cb3c6b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f400744ac62892936e86bae0dbcf5c1eb21366e8f70aa6adcaf066dbe8a235cf all runs: OK false negative chance: 0.000 # git bisect bad 016eb59012b576f5a7b7b415d757717dc8cb3c6b Bisecting: 145 revisions left to test after this (roughly 7 steps) [03fdb11da92fde0bdc0b6e9c1c642b7414d49e8d] net: moxa: fix endianness-related issues from 'sparse' determine whether the revision contains the guilty commit revision 798cd57cd5f871452461746032cf6ee50b0fd69a crashed and is reachable testing commit 03fdb11da92fde0bdc0b6e9c1c642b7414d49e8d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 733e1967e41e972bb406c3726529f0f7becaf70e9db6b8e31af04178894c1fd2 all runs: crashed: possible deadlock in htab_map_delete_elem representative crash: possible deadlock in htab_map_delete_elem, types: [LOCKDEP] # git bisect good 03fdb11da92fde0bdc0b6e9c1c642b7414d49e8d Bisecting: 72 revisions left to test after this (roughly 6 steps) [1adef0643b7df1069a53f6f5b7bc66c8234db899] selftests/xsk: Introduce default Rx pkt stream determine whether the revision contains the guilty commit revision 798cd57cd5f871452461746032cf6ee50b0fd69a crashed and is reachable testing commit 1adef0643b7df1069a53f6f5b7bc66c8234db899 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 958383096ba4fbc46d9f65ccb4848c2aaffe7d99683c200fa44b19ed4fd02b2e all runs: crashed: possible deadlock in htab_map_delete_elem representative crash: possible deadlock in htab_map_delete_elem, types: [LOCKDEP] # git bisect good 1adef0643b7df1069a53f6f5b7bc66c8234db899 Bisecting: 36 revisions left to test after this (roughly 5 steps) [96da3f7d489d11b43e7c1af90d876b9a2492cca8] bpf: Remove tracing program restriction on map types determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 96da3f7d489d11b43e7c1af90d876b9a2492cca8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4a06a3ff57dd7ac35e720374ecffcdb1d6843c29b48d87aa472f5ed3c6ee127a all runs: crashed: BUG: MAX_LOCKDEP_KEYS too low! representative crash: BUG: MAX_LOCKDEP_KEYS too low!, types: [UNKNOWN] # git bisect good 96da3f7d489d11b43e7c1af90d876b9a2492cca8 Bisecting: 17 revisions left to test after this (roughly 4 steps) [da7d8e65b3fcebce0a2f606669cabce64fca0475] Merge branch 'netlink-be-policy' determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit da7d8e65b3fcebce0a2f606669cabce64fca0475 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 97ea9ec3c41cb20af7e02c0a467414724a49ff892553f8313f16e310c3042616 all runs: OK false negative chance: 0.000 # git bisect bad da7d8e65b3fcebce0a2f606669cabce64fca0475 Bisecting: 9 revisions left to test after this (roughly 3 steps) [3a8b8ea6c7c298482e54c6abee006c400b7aa568] net: dsa: microchip: ksz9477: remove 0x033C and 0x033D addresses from regmap_access_tables determine whether the revision contains the guilty commit revision 96da3f7d489d11b43e7c1af90d876b9a2492cca8 crashed and is reachable testing commit 3a8b8ea6c7c298482e54c6abee006c400b7aa568 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e72c1179b184a5936c8d98060567f45a4a484618d0ecff610f85c408478d4dce all runs: OK false negative chance: 0.000 # git bisect bad 3a8b8ea6c7c298482e54c6abee006c400b7aa568 Bisecting: 4 revisions left to test after this (roughly 2 steps) [9f2c6e96c65e6fa1aebef546be0c30a5895fcb37] bpf: Optimize rcu_barrier usage between hash map and bpf_mem_alloc. determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 9f2c6e96c65e6fa1aebef546be0c30a5895fcb37 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c4695a5fd9b1845824f27882e81c5fa2728433194371906fc70cbebca468fefd all runs: OK false negative chance: 0.000 # git bisect bad 9f2c6e96c65e6fa1aebef546be0c30a5895fcb37 Bisecting: 1 revision left to test after this (roughly 1 step) [02cc5aa29e8cef4c1d710accd423546ab63f4eda] bpf: Remove prealloc-only restriction for sleepable bpf programs. determine whether the revision contains the guilty commit revision 1adef0643b7df1069a53f6f5b7bc66c8234db899 crashed and is reachable testing commit 02cc5aa29e8cef4c1d710accd423546ab63f4eda gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 006c4da3e1c0567233be456cae7564419101ba10230968aadcdfede0ae9ab5eb all runs: crashed: BUG: MAX_LOCKDEP_KEYS too low! representative crash: BUG: MAX_LOCKDEP_KEYS too low!, types: [UNKNOWN] # git bisect good 02cc5aa29e8cef4c1d710accd423546ab63f4eda Bisecting: 0 revisions left to test after this (roughly 0 steps) [bfc03c15bebf5e0028e21ca5fc0fe4a60a6b6681] bpf: Remove usage of kmem_cache from bpf_mem_cache. determine whether the revision contains the guilty commit revision 96da3f7d489d11b43e7c1af90d876b9a2492cca8 crashed and is reachable testing commit bfc03c15bebf5e0028e21ca5fc0fe4a60a6b6681 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d550fcfa1d5fbb5d2f383b7bbbdb15bba119a7f43194fd657e4b0c4216a781a9 all runs: crashed: BUG: MAX_LOCKDEP_KEYS too low! representative crash: BUG: MAX_LOCKDEP_KEYS too low!, types: [UNKNOWN] # git bisect good bfc03c15bebf5e0028e21ca5fc0fe4a60a6b6681 9f2c6e96c65e6fa1aebef546be0c30a5895fcb37 is the first bad commit commit 9f2c6e96c65e6fa1aebef546be0c30a5895fcb37 Author: Alexei Starovoitov Date: Fri Sep 2 14:10:58 2022 -0700 bpf: Optimize rcu_barrier usage between hash map and bpf_mem_alloc. User space might be creating and destroying a lot of hash maps. Synchronous rcu_barrier-s in a destruction path of hash map delay freeing of hash buckets and other map memory and may cause artificial OOM situation under stress. Optimize rcu_barrier usage between bpf hash map and bpf_mem_alloc: - remove rcu_barrier from hash map, since htab doesn't use call_rcu directly and there are no callback to wait for. - bpf_mem_alloc has call_rcu_in_progress flag that indicates pending callbacks. Use it to avoid barriers in fast path. - When barriers are needed copy bpf_mem_alloc into temp structure and wait for rcu barrier-s in the worker to let the rest of hash map freeing to proceed. Signed-off-by: Alexei Starovoitov Signed-off-by: Daniel Borkmann Link: https://lore.kernel.org/bpf/20220902211058.60789-17-alexei.starovoitov@gmail.com include/linux/bpf_mem_alloc.h | 2 ++ kernel/bpf/hashtab.c | 6 ++-- kernel/bpf/memalloc.c | 80 ++++++++++++++++++++++++++++++++++--------- 3 files changed, 69 insertions(+), 19 deletions(-) accumulated error probability: 0.00 culprit signature: c4695a5fd9b1845824f27882e81c5fa2728433194371906fc70cbebca468fefd parent signature: d550fcfa1d5fbb5d2f383b7bbbdb15bba119a7f43194fd657e4b0c4216a781a9 revisions tested: 27, total time: 8h3m37.711439995s (build: 3h27m29.138446681s, test: 3h31m46.005822513s) first good commit: 9f2c6e96c65e6fa1aebef546be0c30a5895fcb37 bpf: Optimize rcu_barrier usage between hash map and bpf_mem_alloc. recipients (to): ["ast@kernel.org" "daniel@iogearbox.net"] recipients (cc): []