ci2 starts bisection 2024-04-29 03:12:54.696563844 +0000 UTC m=+174507.105869382 bisecting fixing commit since e5cd595e23c1a075359a337c0e5c3a4f2dc28dd1 building syzkaller on c52bcb237b7f9c6a74d125c9b90d7420a1ac8d2a ensuring issue is reproducible on original commit e5cd595e23c1a075359a337c0e5c3a4f2dc28dd1 testing commit e5cd595e23c1a075359a337c0e5c3a4f2dc28dd1 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b60dcf97b641385bf8ec23fd4664c9c81556233df1e0599a08a03c9e67b7137f run #0: crashed: possible deadlock in lock_timer_base run #1: crashed: possible deadlock in lock_timer_base run #2: crashed: WARNING in sock_hash_delete_elem run #3: crashed: WARNING in __mod_timer run #4: crashed: possible deadlock in lock_timer_base run #5: crashed: possible deadlock in lock_timer_base run #6: crashed: possible deadlock in lock_timer_base run #7: crashed: possible deadlock in lock_timer_base run #8: crashed: possible deadlock in lock_timer_base run #9: crashed: possible deadlock in lock_timer_base run #10: crashed: possible deadlock in lock_timer_base run #11: crashed: possible deadlock in lock_timer_base run #12: crashed: possible deadlock in lock_timer_base run #13: crashed: possible deadlock in lock_timer_base run #14: crashed: possible deadlock in lock_timer_base run #15: crashed: possible deadlock in lock_timer_base run #16: crashed: possible deadlock in lock_timer_base run #17: crashed: possible deadlock in lock_timer_base run #18: crashed: possible deadlock in lock_timer_base run #19: crashed: possible deadlock in lock_timer_base representative crash: possible deadlock in lock_timer_base, 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 e5cd595e23c1a075359a337c0e5c3a4f2dc28dd1 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d367cee55dff0fb86b6b8d3cea1726bfa639d08e70a38343b4d49cb61fdd4a5d run #0: crashed: possible deadlock in add_timer_on run #1: crashed: possible deadlock in add_timer_on run #2: crashed: possible deadlock in add_timer_on run #3: crashed: possible deadlock in add_timer_on run #4: crashed: possible deadlock in add_timer_on run #5: crashed: possible deadlock in add_timer_on run #6: crashed: inconsistent lock state in sock_hash_delete_elem run #7: crashed: possible deadlock in add_timer_on run #8: crashed: possible deadlock in add_timer_on run #9: crashed: possible deadlock in add_timer_on representative crash: possible deadlock in add_timer_on, 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=3820 full=7454 leaves diff=1988 split chunks (needed=false): <1988> split chunk #0 of len 1988 into 5 parts testing without sub-chunk 1/5 disabling configs for [LEAK UBSAN BUG KASAN ATOMIC_SLEEP HANG], they are not needed testing commit e5cd595e23c1a075359a337c0e5c3a4f2dc28dd1 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a68d77a2f7e8d6ca01f79867f9c17ff7559f2d2dc51da18b64e412f315f5a4fe run #0: crashed: possible deadlock in add_timer_on run #1: crashed: possible deadlock in add_timer_on run #2: crashed: possible deadlock in add_timer_on run #3: crashed: possible deadlock in add_timer_on run #4: crashed: possible deadlock in add_timer_on run #5: crashed: inconsistent lock state in sock_hash_delete_elem run #6: crashed: possible deadlock in add_timer_on run #7: crashed: possible deadlock in add_timer_on run #8: crashed: inconsistent lock state in sock_hash_delete_elem run #9: crashed: inconsistent lock state in sock_hash_delete_elem representative crash: possible deadlock in add_timer_on, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [UBSAN BUG KASAN ATOMIC_SLEEP HANG LEAK], they are not needed testing commit e5cd595e23c1a075359a337c0e5c3a4f2dc28dd1 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 850f0cbcd719043cbc3f85a263135d11b81c958d9a9669d2bb519b88a82928c9 run #0: crashed: possible deadlock in add_timer_on run #1: crashed: possible deadlock in add_timer_on run #2: crashed: possible deadlock in add_timer_on run #3: crashed: possible deadlock in add_timer_on run #4: crashed: possible deadlock in add_timer_on run #5: crashed: inconsistent lock state in sock_hash_delete_elem run #6: crashed: possible deadlock in add_timer_on run #7: crashed: possible deadlock in add_timer_on run #8: crashed: possible deadlock in add_timer_on run #9: crashed: possible deadlock in add_timer_on representative crash: possible deadlock in add_timer_on, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit e5cd595e23c1a075359a337c0e5c3a4f2dc28dd1 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7575fad310d8c69a661c7b351461103bd59e89e15b67bd7a4310a9a4c06c9a5d run #0: crashed: inconsistent lock state in sock_hash_delete_elem run #1: crashed: possible deadlock in add_timer_on run #2: crashed: possible deadlock in add_timer_on run #3: crashed: inconsistent lock state in sock_hash_delete_elem run #4: crashed: possible deadlock in add_timer_on run #5: crashed: possible deadlock in add_timer_on run #6: crashed: possible deadlock in add_timer_on run #7: crashed: possible deadlock in add_timer_on run #8: crashed: possible deadlock in add_timer_on run #9: crashed: possible deadlock in add_timer_on representative crash: inconsistent lock state in sock_hash_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 e5cd595e23c1a075359a337c0e5c3a4f2dc28dd1 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 42a039d43eecba9a96298bf1e8d8b32ab18527bf9520d2fe010436e674fa02ce run #0: crashed: possible deadlock in add_timer_on run #1: crashed: possible deadlock in add_timer_on run #2: crashed: inconsistent lock state in sock_hash_delete_elem run #3: crashed: possible deadlock in add_timer_on run #4: crashed: possible deadlock in add_timer_on run #5: crashed: possible deadlock in add_timer_on run #6: crashed: inconsistent lock state in sock_hash_delete_elem run #7: crashed: possible deadlock in add_timer_on run #8: crashed: possible deadlock in add_timer_on run #9: crashed: possible deadlock in add_timer_on representative crash: possible deadlock in add_timer_on, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [LEAK UBSAN BUG KASAN ATOMIC_SLEEP HANG], they are not needed testing commit e5cd595e23c1a075359a337c0e5c3a4f2dc28dd1 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3ac58c60f552f598a96a94431ea3b17021b7147f447e437a9ebdbf30e29c6569 all runs: OK false negative chance: 0.000 minimized to 396 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_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 [HANG LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed testing current HEAD f2295faba5e8249ae4082791bfc1664c88fff83a testing commit f2295faba5e8249ae4082791bfc1664c88fff83a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 570417df4906cf2beadf930e7ae1d1c1d0212cc7192e86990e23e2f45edc0d58 all runs: OK false negative chance: 0.000 # git bisect start f2295faba5e8249ae4082791bfc1664c88fff83a e5cd595e23c1a075359a337c0e5c3a4f2dc28dd1 Bisecting: 349 revisions left to test after this (roughly 9 steps) [b3608fe28fab298ee2bcdde26bdaf9c179e8c69f] net: fec: Set mac_managed_pm during probe determine whether the revision contains the guilty commit revision e5cd595e23c1a075359a337c0e5c3a4f2dc28dd1 crashed and is reachable testing commit b3608fe28fab298ee2bcdde26bdaf9c179e8c69f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 95b3db3cd3674ba643acddf4a9b4c0a8e2f6f9f4adf8afcf38476b49278079f0 all runs: OK false negative chance: 0.000 # git bisect bad b3608fe28fab298ee2bcdde26bdaf9c179e8c69f Bisecting: 174 revisions left to test after this (roughly 8 steps) [6ee02e35593193d25f49aed7a97f76ae1ff07a3d] ASoC: amd: yc: Revert "Fix non-functional mic on Lenovo 21J2" determine whether the revision contains the guilty commit revision e5cd595e23c1a075359a337c0e5c3a4f2dc28dd1 crashed and is reachable testing commit 6ee02e35593193d25f49aed7a97f76ae1ff07a3d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 206479c465b3a6e7b70e997b8aeea349cf3df70cd3670ac8c87af248c504c252 run #0: crashed: possible deadlock in add_timer_on run #1: crashed: possible deadlock in add_timer_on run #2: crashed: possible deadlock in add_timer_on run #3: crashed: possible deadlock in add_timer_on run #4: crashed: inconsistent lock state in sock_hash_delete_elem run #5: crashed: inconsistent lock state in sock_hash_delete_elem run #6: crashed: inconsistent lock state in sock_hash_delete_elem run #7: crashed: possible deadlock in add_timer_on run #8: crashed: possible deadlock in add_timer_on run #9: crashed: possible deadlock in add_timer_on representative crash: possible deadlock in add_timer_on, types: [LOCKDEP] # git bisect good 6ee02e35593193d25f49aed7a97f76ae1ff07a3d Bisecting: 87 revisions left to test after this (roughly 7 steps) [f2b85a4cc763841843de693bbd7308fe9a2c4c89] tls: fix use-after-free on failed backlog decryption determine whether the revision contains the guilty commit revision 6ee02e35593193d25f49aed7a97f76ae1ff07a3d crashed and is reachable testing commit f2b85a4cc763841843de693bbd7308fe9a2c4c89 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 531dcdad486ece8d6062c541649fd2da63f3fd39e3dd91bfcc503365c0c11dea run #0: crashed: possible deadlock in add_timer_on run #1: crashed: possible deadlock in add_timer_on run #2: crashed: possible deadlock in add_timer_on run #3: crashed: possible deadlock in add_timer_on run #4: crashed: inconsistent lock state in sock_hash_delete_elem run #5: crashed: possible deadlock in add_timer_on run #6: crashed: possible deadlock in add_timer_on run #7: crashed: possible deadlock in add_timer_on run #8: crashed: possible deadlock in add_timer_on run #9: crashed: possible deadlock in add_timer_on representative crash: possible deadlock in add_timer_on, types: [LOCKDEP] # git bisect good f2b85a4cc763841843de693bbd7308fe9a2c4c89 Bisecting: 43 revisions left to test after this (roughly 6 steps) [cbaac2e5488ed54833897264a5ffb2a341a9f196] net/rds: fix possible cp null dereference determine whether the revision contains the guilty commit revision e5cd595e23c1a075359a337c0e5c3a4f2dc28dd1 crashed and is reachable testing commit cbaac2e5488ed54833897264a5ffb2a341a9f196 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e50c8d1b1d806729f3d01888c120d24affecd942dbaf8d688e3511ad21121974 run #0: crashed: possible deadlock in add_timer_on run #1: crashed: inconsistent lock state in sock_hash_delete_elem run #2: crashed: possible deadlock in add_timer_on run #3: crashed: inconsistent lock state in sock_hash_delete_elem run #4: crashed: possible deadlock in add_timer_on run #5: crashed: possible deadlock in add_timer_on run #6: crashed: possible deadlock in add_timer_on run #7: crashed: inconsistent lock state in sock_hash_delete_elem run #8: crashed: possible deadlock in add_timer_on run #9: crashed: possible deadlock in add_timer_on representative crash: possible deadlock in add_timer_on, types: [LOCKDEP] # git bisect good cbaac2e5488ed54833897264a5ffb2a341a9f196 Bisecting: 21 revisions left to test after this (roughly 5 steps) [167d4b47a9bdcb01541dfa29e9f3cbb8edd3dfd2] ipv6: Fix infinite recursion in fib6_dump_done(). determine whether the revision contains the guilty commit revision 6ee02e35593193d25f49aed7a97f76ae1ff07a3d crashed and is reachable testing commit 167d4b47a9bdcb01541dfa29e9f3cbb8edd3dfd2 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 43df6012eede1791e46d1bef857ec4d3ed99cb6a20c1f20252d24a3d5b027c00 all runs: OK false negative chance: 0.000 # git bisect bad 167d4b47a9bdcb01541dfa29e9f3cbb8edd3dfd2 Bisecting: 10 revisions left to test after this (roughly 4 steps) [b7d1ce2cc7192e8a037faa3f5d3ba72c25976460] net/sched: fix lockdep splat in qdisc_tree_reduce_backlog() determine whether the revision contains the guilty commit revision cbaac2e5488ed54833897264a5ffb2a341a9f196 crashed and is reachable testing commit b7d1ce2cc7192e8a037faa3f5d3ba72c25976460 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 58a1f1e7a63e20e087ac220566c4834142f4ac689f865af0f24817d027f98868 all runs: OK false negative chance: 0.000 # git bisect bad b7d1ce2cc7192e8a037faa3f5d3ba72c25976460 Bisecting: 5 revisions left to test after this (roughly 3 steps) [4e8447a9a3d367b5065a0b7abe101da6e0037b6e] netfilter: nf_tables: flush pending destroy work before exit_net release determine whether the revision contains the guilty commit revision cbaac2e5488ed54833897264a5ffb2a341a9f196 crashed and is reachable testing commit 4e8447a9a3d367b5065a0b7abe101da6e0037b6e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 862eda4cb8e89283878aad33b2a5fbf036511a9f6d5c2f842850332221e60826 run #0: crashed: possible deadlock in add_timer_on run #1: crashed: possible deadlock in add_timer_on run #2: crashed: possible deadlock in add_timer_on run #3: crashed: possible deadlock in add_timer_on run #4: crashed: possible deadlock in add_timer_on run #5: crashed: possible deadlock in add_timer_on run #6: crashed: inconsistent lock state in sock_hash_delete_elem run #7: crashed: possible deadlock in add_timer_on run #8: crashed: possible deadlock in add_timer_on run #9: crashed: possible deadlock in add_timer_on representative crash: possible deadlock in add_timer_on, types: [LOCKDEP] # git bisect good 4e8447a9a3d367b5065a0b7abe101da6e0037b6e Bisecting: 2 revisions left to test after this (roughly 2 steps) [8a57544e9285a16dce8e58f470a1b30f426812c4] vboxsf: Avoid an spurious warning if load_nls_xxx() fails determine whether the revision contains the guilty commit revision 6ee02e35593193d25f49aed7a97f76ae1ff07a3d crashed and is reachable testing commit 8a57544e9285a16dce8e58f470a1b30f426812c4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3b896387d7f92b4bbe2e6eb4e8868dbb9700eb00a3fdf24e06d099a5a5108072 all runs: crashed: possible deadlock in add_timer_on representative crash: possible deadlock in add_timer_on, types: [LOCKDEP] # git bisect good 8a57544e9285a16dce8e58f470a1b30f426812c4 Bisecting: 0 revisions left to test after this (roughly 1 step) [55d3fe7b2b7bc354e7cbc1f7b8f98a29ccd5a366] net/sched: act_skbmod: prevent kernel-infoleak determine whether the revision contains the guilty commit revision 6ee02e35593193d25f49aed7a97f76ae1ff07a3d crashed and is reachable testing commit 55d3fe7b2b7bc354e7cbc1f7b8f98a29ccd5a366 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3b5def259817f29610a759cdebf18e4184cbc0a0b063e06e7a08a1c3aae5eea1 all runs: OK false negative chance: 0.000 # git bisect bad 55d3fe7b2b7bc354e7cbc1f7b8f98a29ccd5a366 Bisecting: 0 revisions left to test after this (roughly 0 steps) [a44770fed86515eedb5a7c00b787f847ebb134a5] bpf, sockmap: Prevent lock inversion deadlock in map delete elem determine whether the revision contains the guilty commit revision 6ee02e35593193d25f49aed7a97f76ae1ff07a3d crashed and is reachable testing commit a44770fed86515eedb5a7c00b787f847ebb134a5 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 22800afd3399db1b7d577cf806cc6a581cb2a40f3669122675d79e0b13d9f592 all runs: OK false negative chance: 0.000 # git bisect bad a44770fed86515eedb5a7c00b787f847ebb134a5 a44770fed86515eedb5a7c00b787f847ebb134a5 is the first bad commit commit a44770fed86515eedb5a7c00b787f847ebb134a5 Author: Jakub Sitnicki Date: Tue Apr 2 12:46:21 2024 +0200 bpf, sockmap: Prevent lock inversion deadlock in map delete elem commit ff91059932401894e6c86341915615c5eb0eca48 upstream. syzkaller started using corpuses where a BPF tracing program deletes elements from a sockmap/sockhash map. Because BPF tracing programs can be invoked from any interrupt context, locks taken during a map_delete_elem operation must be hardirq-safe. Otherwise a deadlock due to lock inversion is possible, as reported by lockdep: CPU0 CPU1 ---- ---- lock(&htab->buckets[i].lock); local_irq_disable(); lock(&host->lock); lock(&htab->buckets[i].lock); lock(&host->lock); Locks in sockmap are hardirq-unsafe by design. We expects elements to be deleted from sockmap/sockhash only in task (normal) context with interrupts enabled, or in softirq context. Detect when map_delete_elem operation is invoked from a context which is _not_ hardirq-unsafe, that is interrupts are disabled, and bail out with an error. Note that map updates are not affected by this issue. BPF verifier does not allow updating sockmap/sockhash from a BPF tracing program today. Fixes: 604326b41a6f ("bpf, sockmap: convert to generic sk_msg interface") Reported-by: xingwei lee Reported-by: yue sun Reported-by: syzbot+bc922f476bd65abbd466@syzkaller.appspotmail.com Reported-by: syzbot+d4066896495db380182e@syzkaller.appspotmail.com Signed-off-by: Jakub Sitnicki Signed-off-by: Daniel Borkmann Tested-by: syzbot+d4066896495db380182e@syzkaller.appspotmail.com Acked-by: John Fastabend Closes: https://syzkaller.appspot.com/bug?extid=d4066896495db380182e Closes: https://syzkaller.appspot.com/bug?extid=bc922f476bd65abbd466 Link: https://lore.kernel.org/bpf/20240402104621.1050319-1-jakub@cloudflare.com Signed-off-by: Greg Kroah-Hartman net/core/sock_map.c | 6 ++++++ 1 file changed, 6 insertions(+) accumulated error probability: 0.00 culprit signature: 22800afd3399db1b7d577cf806cc6a581cb2a40f3669122675d79e0b13d9f592 parent signature: 3b896387d7f92b4bbe2e6eb4e8868dbb9700eb00a3fdf24e06d099a5a5108072 revisions tested: 18, total time: 3h56m17.233371827s (build: 1h21m20.027368126s, test: 2h21m21.555194771s) first good commit: a44770fed86515eedb5a7c00b787f847ebb134a5 bpf, sockmap: Prevent lock inversion deadlock in map delete elem recipients (to): ["daniel@iogearbox.net" "gregkh@linuxfoundation.org" "jakub@cloudflare.com" "john.fastabend@gmail.com" "syzbot+d4066896495db380182e@syzkaller.appspotmail.com"] recipients (cc): []