ci2 starts bisection 2024-06-26 04:09:28.276105496 +0000 UTC m=+23098.724890245 bisecting fixing commit since 347385861c50adc8d4801d4b899eded38a2f04cd building syzkaller on f323435486123f331122c97cd8bd4183c89d4f05 ensuring issue is reproducible on original commit 347385861c50adc8d4801d4b899eded38a2f04cd testing commit 347385861c50adc8d4801d4b899eded38a2f04cd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: feaacee51078ff2a857e452794594674f9f99778f4eb25464a378acc53f45f5a run #0: crashed: WARNING in sock_map_delete_elem run #1: crashed: possible deadlock in scheduler_tick run #2: crashed: possible deadlock in scheduler_tick run #3: crashed: WARNING in sock_map_delete_elem run #4: crashed: possible deadlock in rcu_report_exp_cpu_mult run #5: crashed: possible deadlock in lock_timer_base run #6: crashed: possible deadlock in scheduler_tick run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: possible deadlock in scheduler_tick run #9: crashed: INFO: rcu detected stall in corrupted run #10: crashed: INFO: rcu detected stall in corrupted run #11: crashed: possible deadlock in hrtimer_run_queues run #12: crashed: INFO: rcu detected stall in corrupted run #13: crashed: INFO: rcu detected stall in corrupted run #14: crashed: INFO: rcu detected stall in corrupted run #15: crashed: INFO: rcu detected stall in corrupted run #16: crashed: INFO: rcu detected stall in corrupted run #17: crashed: INFO: rcu detected stall in corrupted run #18: crashed: INFO: rcu detected stall in corrupted run #19: crashed: no output from test machine representative crash: INFO: rcu detected stall in corrupted, types: [HANG LOCKDEP] check whether we can drop unnecessary instrumentation disabling configs for [BUG KASAN ATOMIC_SLEEP LEAK UBSAN], they are not needed testing commit 347385861c50adc8d4801d4b899eded38a2f04cd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 223345a60a72b5fc0cebdc38478e8dc9bcd0c8779e92d6467e764e23d2c4c698 run #0: crashed: possible deadlock in scheduler_tick run #1: crashed: possible deadlock in rcu_report_exp_cpu_mult run #2: crashed: possible deadlock in scheduler_tick run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in corrupted run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: no output from test machine run #9: crashed: no output from test machine representative crash: INFO: rcu detected stall in corrupted, types: [HANG LOCKDEP] the bug reproduces without the instrumentation disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed kconfig minimization: base=3820 full=7454 leaves diff=1989 split chunks (needed=false): <1989> split chunk #0 of len 1989 into 5 parts testing without sub-chunk 1/5 disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed testing commit 347385861c50adc8d4801d4b899eded38a2f04cd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d966e1b99af32e491bda463a692fe9f998d6592bc36122dc4d7e2770490bf49b run #0: crashed: invalid opcode in preempt_schedule_irq run #1: crashed: inconsistent lock state in sock_map_delete_elem run #2: crashed: inconsistent lock state in sock_map_delete_elem run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in corrupted run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG LOCKDEP] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed testing commit 347385861c50adc8d4801d4b899eded38a2f04cd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7d75768040821bd9742bfbcc1245e23386de047f05af717a25fe0ae8605e41a9 run #0: crashed: possible deadlock in rcu_report_exp_cpu_mult run #1: crashed: possible deadlock in scheduler_tick run #2: crashed: inconsistent lock state in sock_map_delete_elem run #3: crashed: possible deadlock in scheduler_tick run #4: crashed: possible deadlock in try_to_wake_up run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: no output from test machine representative crash: possible deadlock in rcu_report_exp_cpu_mult, types: [LOCKDEP UNKNOWN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [UBSAN BUG KASAN ATOMIC_SLEEP LEAK], they are not needed testing commit 347385861c50adc8d4801d4b899eded38a2f04cd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 284ae8123d260d2c2e19d58bc2bc4f01ea04cadef5896a503eaebdfb1d78eac2 run #0: crashed: BUG: using __this_cpu_add() in preemptible code in graph_lock run #1: crashed: inconsistent lock state in sock_map_delete_elem run #2: crashed: possible deadlock in swake_up_one run #3: crashed: inconsistent lock state in sock_map_delete_elem run #4: crashed: possible deadlock in scheduler_tick run #5: crashed: possible deadlock in scheduler_tick run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: BUG: soft lockup in smp_call_function representative crash: inconsistent lock state in sock_map_delete_elem, types: [LOCKDEP UNKNOWN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed testing commit 347385861c50adc8d4801d4b899eded38a2f04cd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c58e34f36031ce63ef54ca0cc71eb1ed8595bd4e27986b734cd04a5f1efcfbee run #0: crashed: possible deadlock in scheduler_tick run #1: crashed: inconsistent lock state in sock_map_delete_elem run #2: crashed: inconsistent lock state in sock_map_delete_elem run #3: crashed: possible deadlock in add_timer_on run #4: crashed: possible deadlock in scheduler_tick run #5: crashed: possible deadlock in scheduler_tick run #6: crashed: inconsistent lock state in sock_map_delete_elem run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: INFO: rcu detected stall in corrupted representative crash: possible deadlock in scheduler_tick, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [UBSAN BUG KASAN ATOMIC_SLEEP LEAK], they are not needed testing commit 347385861c50adc8d4801d4b899eded38a2f04cd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3d6ac51e0ac83a5a4e8c7701ca07f1123a74b1facaa5d7e7ce5fb093236438d8 all runs: OK false negative chance: 0.000 minimized to 397 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 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_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_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_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_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_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 USERFAULTFD USERIO USERMODE_DRIVER USER_RETURN_NOTIFIER 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_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 VIDEOMODE_HELPERS VIDEO_AU0828 VIDEO_AU0828_RC VIDEO_AU0828_V4L2 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_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_X2APIC X86_X32_ABI 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 ZLIB_DEFLATE 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 [BUG KASAN ATOMIC_SLEEP LEAK UBSAN], they are not needed testing current HEAD a6398e37309000e35cedb5cc328a0f8d00d7d7b9 testing commit a6398e37309000e35cedb5cc328a0f8d00d7d7b9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1c51cd5e3f8558efdcca9b9cac8cf761ba05334415a8b2d82251236972de01e7 all runs: OK false negative chance: 0.000 # git bisect start a6398e37309000e35cedb5cc328a0f8d00d7d7b9 347385861c50adc8d4801d4b899eded38a2f04cd Bisecting: 805 revisions left to test after this (roughly 10 steps) [ea67e73129fceffd40b9193da93544c34d81b9c2] xfs: use iomap_valid method to detect stale cached iomaps determine whether the revision contains the guilty commit revision 347385861c50adc8d4801d4b899eded38a2f04cd crashed and is reachable testing commit ea67e73129fceffd40b9193da93544c34d81b9c2 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ce2ffe7fd74cda9a73c19b1398ae6a47ad1342bb479067b96f7701b090496dd5 all runs: crashed: possible deadlock in sock_map_delete_elem representative crash: possible deadlock in sock_map_delete_elem, types: [LOCKDEP] # git bisect good ea67e73129fceffd40b9193da93544c34d81b9c2 Bisecting: 402 revisions left to test after this (roughly 9 steps) [0c02d425a2fbe52643a5859a779db0329e7dddd4] um: Add winch to winch_handlers before registering winch IRQ determine whether the revision contains the guilty commit revision ea67e73129fceffd40b9193da93544c34d81b9c2 crashed and is reachable testing commit 0c02d425a2fbe52643a5859a779db0329e7dddd4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 721a691ceedea7353b47d1dd59d76d666d5e3ebb3d1aadf2cbf430bbe98738e7 all runs: crashed: possible deadlock in sock_map_delete_elem representative crash: possible deadlock in sock_map_delete_elem, types: [LOCKDEP] # git bisect good 0c02d425a2fbe52643a5859a779db0329e7dddd4 Bisecting: 201 revisions left to test after this (roughly 8 steps) [a170d5a40f8bc8ae9238f1f037b6a1223620d110] ipv6: sr: block BH in seg6_output_core() and seg6_input_core() determine whether the revision contains the guilty commit revision ea67e73129fceffd40b9193da93544c34d81b9c2 crashed and is reachable testing commit a170d5a40f8bc8ae9238f1f037b6a1223620d110 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: dc2decbae71ee0a02868434509e4b4fa151df9167a26cd3d374b2e1cde0c4885 all runs: OK false negative chance: 0.000 # git bisect bad a170d5a40f8bc8ae9238f1f037b6a1223620d110 Bisecting: 100 revisions left to test after this (roughly 7 steps) [a17e06d709bd09889a6252d9030869323a40f3c6] drm: Check polling initialized before enabling in drm_helper_probe_single_connector_modes determine whether the revision contains the guilty commit revision ea67e73129fceffd40b9193da93544c34d81b9c2 crashed and is reachable testing commit a17e06d709bd09889a6252d9030869323a40f3c6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7c2dda995b067f845cb1e25812c7c44a3c4aea9e274d6e43f9c7cfed8cb5edbc all runs: OK false negative chance: 0.000 # git bisect bad a17e06d709bd09889a6252d9030869323a40f3c6 Bisecting: 49 revisions left to test after this (roughly 6 steps) [c09ddc605893df542c6cf8dde6a57a93f7cf0adb] net: relax socket state check at accept time. determine whether the revision contains the guilty commit revision ea67e73129fceffd40b9193da93544c34d81b9c2 crashed and is reachable testing commit c09ddc605893df542c6cf8dde6a57a93f7cf0adb gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c3b9121350d0c2f8f5c279f47311a4de0745473d4ce183b280a683e97678985d all runs: crashed: possible deadlock in sock_map_delete_elem representative crash: possible deadlock in sock_map_delete_elem, types: [LOCKDEP] # git bisect good c09ddc605893df542c6cf8dde6a57a93f7cf0adb Bisecting: 24 revisions left to test after this (roughly 5 steps) [f52bb074e4dd63f1013cf69404567b738480f299] net: usb: smsc95xx: fix changing LED_SEL bit value updated from EEPROM determine whether the revision contains the guilty commit revision c09ddc605893df542c6cf8dde6a57a93f7cf0adb crashed and is reachable testing commit f52bb074e4dd63f1013cf69404567b738480f299 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a57c352096167574f49a3a95388dea9d576172549f00422ef99698daee69ab95 all runs: crashed: possible deadlock in sock_map_delete_elem representative crash: possible deadlock in sock_map_delete_elem, types: [LOCKDEP] # git bisect good f52bb074e4dd63f1013cf69404567b738480f299 Bisecting: 12 revisions left to test after this (roughly 4 steps) [0e355a3ce2443663910caf5cef84b470ce892c25] spi: stm32: Don't warn about spurious interrupts determine whether the revision contains the guilty commit revision ea67e73129fceffd40b9193da93544c34d81b9c2 crashed and is reachable testing commit 0e355a3ce2443663910caf5cef84b470ce892c25 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6881109619d1145d5c52fa2ff4a3d0c01d08868b68e88da8f79061f5338cb0ff all runs: OK false negative chance: 0.000 # git bisect bad 0e355a3ce2443663910caf5cef84b470ce892c25 Bisecting: 5 revisions left to test after this (roughly 3 steps) [cffee0b578ba6655bbb851c486e9c2003c91ad12] netfilter: nft_payload: rebuild vlan header on h_proto access determine whether the revision contains the guilty commit revision c09ddc605893df542c6cf8dde6a57a93f7cf0adb crashed and is reachable testing commit cffee0b578ba6655bbb851c486e9c2003c91ad12 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3c3b40ca241986600a1fef4d29f8891e7f71e16304e0b7e37ecb4f4b9bd0272a all runs: OK false negative chance: 0.000 # git bisect bad cffee0b578ba6655bbb851c486e9c2003c91ad12 Bisecting: 2 revisions left to test after this (roughly 2 steps) [07cbc551202332e2f02ce87f0ddd6ba89f62d90d] ice: fix accounting if a VLAN already exists determine whether the revision contains the guilty commit revision 0c02d425a2fbe52643a5859a779db0329e7dddd4 crashed and is reachable testing commit 07cbc551202332e2f02ce87f0ddd6ba89f62d90d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ed86354ec6b1650500ca487a160bd235c34f64dc56c34250bfc172b2729563b1 all runs: OK false negative chance: 0.000 # git bisect bad 07cbc551202332e2f02ce87f0ddd6ba89f62d90d Bisecting: 0 revisions left to test after this (roughly 1 step) [50bb204a6b02d394ac208be4b359e74ae438dcf2] net:fec: Add fec_enet_deinit() determine whether the revision contains the guilty commit revision 347385861c50adc8d4801d4b899eded38a2f04cd crashed and is reachable testing commit 50bb204a6b02d394ac208be4b359e74ae438dcf2 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 50e67b16b80a5f985061c8ba1706e7d2c6c63744eee0e1ee29f2861e7f9b1f20 all runs: OK false negative chance: 0.000 # git bisect bad 50bb204a6b02d394ac208be4b359e74ae438dcf2 Bisecting: 0 revisions left to test after this (roughly 0 steps) [6693b172f008846811f48a099f33effc26068e1e] bpf: Allow delete from sockmap/sockhash only if update is allowed determine whether the revision contains the guilty commit revision 347385861c50adc8d4801d4b899eded38a2f04cd crashed and is reachable testing commit 6693b172f008846811f48a099f33effc26068e1e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 44b7828fa20c63b717baa2e241c3d7bc9958b81a6634ba958f2a1b733c42ecd2 all runs: OK false negative chance: 0.000 # git bisect bad 6693b172f008846811f48a099f33effc26068e1e 6693b172f008846811f48a099f33effc26068e1e is the first bad commit commit 6693b172f008846811f48a099f33effc26068e1e Author: Jakub Sitnicki Date: Mon May 27 13:20:07 2024 +0200 bpf: Allow delete from sockmap/sockhash only if update is allowed [ Upstream commit 98e948fb60d41447fd8d2d0c3b8637fc6b6dc26d ] We have seen an influx of syzkaller reports where a BPF program attached to a tracepoint triggers a locking rule violation by performing a map_delete on a sockmap/sockhash. We don't intend to support this artificial use scenario. Extend the existing verifier allowed-program-type check for updating sockmap/sockhash to also cover deleting from a map. From now on only BPF programs which were previously allowed to update sockmap/sockhash can delete from these map types. Fixes: ff9105993240 ("bpf, sockmap: Prevent lock inversion deadlock in map delete elem") Reported-by: Tetsuo Handa Reported-by: syzbot+ec941d6e24f633a59172@syzkaller.appspotmail.com Signed-off-by: Jakub Sitnicki Signed-off-by: Daniel Borkmann Tested-by: syzbot+ec941d6e24f633a59172@syzkaller.appspotmail.com Acked-by: John Fastabend Closes: https://syzkaller.appspot.com/bug?extid=ec941d6e24f633a59172 Link: https://lore.kernel.org/bpf/20240527-sockmap-verify-deletes-v1-1-944b372f2101@cloudflare.com Signed-off-by: Sasha Levin kernel/bpf/verifier.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) accumulated error probability: 0.00 culprit signature: 44b7828fa20c63b717baa2e241c3d7bc9958b81a6634ba958f2a1b733c42ecd2 parent signature: a57c352096167574f49a3a95388dea9d576172549f00422ef99698daee69ab95 revisions tested: 19, total time: 3h42m25.205434861s (build: 55m47.841300533s, test: 2h29m0.449230775s) first good commit: 6693b172f008846811f48a099f33effc26068e1e bpf: Allow delete from sockmap/sockhash only if update is allowed recipients (to): ["daniel@iogearbox.net" "jakub@cloudflare.com" "john.fastabend@gmail.com" "sashal@kernel.org" "syzbot+ec941d6e24f633a59172@syzkaller.appspotmail.com"] recipients (cc): []