ci2 starts bisection 2024-05-16 07:36:46.661765963 +0000 UTC m=+28772.679757737 bisecting fixing commit since 347385861c50adc8d4801d4b899eded38a2f04cd building syzkaller on 4320ec32bd44793e077a482003409ae791e1dfea 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: d7c4552cb7b256190aab99971bc81bd2e9b8ab7788e4faa8f747ecf6c9ff9011 run #0: crashed: WARNING in sock_map_delete_elem run #1: crashed: WARNING in corrupted run #2: crashed: possible deadlock in scheduler_tick run #3: crashed: possible deadlock in scheduler_tick run #4: crashed: possible deadlock in scheduler_tick run #5: crashed: WARNING in sock_map_delete_elem run #6: crashed: WARNING in validate_chain run #7: crashed: WARNING in sock_map_delete_elem run #8: crashed: WARNING in validate_chain run #9: crashed: WARNING in validate_chain run #10: crashed: possible deadlock in hrtimer_run_queues run #11: crashed: WARNING in sock_map_delete_elem run #12: crashed: possible deadlock in scheduler_tick run #13: crashed: WARNING in validate_chain run #14: crashed: WARNING in text_poke_set run #15: crashed: possible deadlock in try_to_wake_up run #16: crashed: possible deadlock in rcu_report_exp_cpu_mult run #17: crashed: possible deadlock in scheduler_tick run #18: crashed: possible deadlock in scheduler_tick run #19: crashed: WARNING in sock_map_delete_elem representative crash: WARNING in sock_map_delete_elem, types: [WARNING LOCKDEP] check whether we can drop unnecessary instrumentation disabling configs for [UBSAN KASAN ATOMIC_SLEEP HANG 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: 2774c36906b65289e82b218cee8eb9944eda36dcf3e60c9a111495965fb5a8e6 run #0: crashed: possible deadlock in scheduler_tick run #1: crashed: possible deadlock in scheduler_tick run #2: crashed: possible deadlock in rcu_report_exp_cpu_mult run #3: crashed: possible deadlock in scheduler_tick run #4: crashed: WARNING in text_poke_set run #5: crashed: possible deadlock in rcu_report_exp_cpu_mult run #6: crashed: BUG: spinlock recursion in try_to_wake_up run #7: crashed: WARNING in rcu_report_exp_cpu_mult run #8: crashed: possible deadlock in rcu_report_exp_cpu_mult run #9: crashed: possible deadlock in rcu_report_exp_cpu_mult representative crash: possible deadlock in scheduler_tick, types: [LOCKDEP] the bug reproduces without the instrumentation disabling configs for [KASAN ATOMIC_SLEEP HANG LEAK UBSAN], 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 [KASAN ATOMIC_SLEEP HANG 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: ff867bc822bf500825a2dfaf3b44d57a1bba36adf6160d6b060232180b3ac7d3 run #0: crashed: WARNING in try_to_wake_up run #1: crashed: WARNING in call_rcu run #2: crashed: WARNING in task_dead_fair run #3: crashed: possible deadlock in scheduler_tick run #4: crashed: possible deadlock in scheduler_tick run #5: crashed: WARNING in __schedule run #6: crashed: possible deadlock in scheduler_tick run #7: crashed: WARNING in sock_map_delete_elem run #8: crashed: no output from test machine run #9: crashed: no output from test machine representative crash: WARNING in try_to_wake_up, types: [WARNING LOCKDEP] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [KASAN ATOMIC_SLEEP HANG 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: 2619ef8bfc63fc0e2645f506fe1b30b28fd3db535e416a1289b873086b4ed9e6 run #0: crashed: possible deadlock in scheduler_tick run #1: crashed: possible deadlock in swake_up_one run #2: crashed: possible deadlock in scheduler_tick run #3: crashed: WARNING in corrupted run #4: crashed: possible deadlock in rcu_report_exp_cpu_mult run #5: crashed: possible deadlock in scheduler_tick run #6: crashed: possible deadlock in swake_up_one run #7: crashed: WARNING in sock_map_delete_elem run #8: crashed: possible deadlock in scheduler_tick run #9: crashed: no output from test machine representative crash: possible deadlock in scheduler_tick, types: [LOCKDEP WARNING] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [KASAN ATOMIC_SLEEP HANG 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: c65a74965c443291bacf221b5aa6c081d0bcc4a451df65ea1b28d19e1ab8b683 run #0: crashed: possible deadlock in scheduler_tick run #1: crashed: possible deadlock in scheduler_tick run #2: crashed: possible deadlock in scheduler_tick run #3: crashed: WARNING in bpf_link_settle run #4: crashed: possible deadlock in scheduler_tick run #5: crashed: WARNING in __schedule run #6: crashed: WARNING in sock_map_delete_elem run #7: crashed: possible deadlock in try_to_wake_up run #8: crashed: WARNING in call_rcu run #9: crashed: no output from test machine representative crash: possible deadlock in scheduler_tick, types: [LOCKDEP WARNING] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [HANG LEAK UBSAN 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: 2d22c3a26558e94b740d077befa4d248a681cc3f83ca5ba596f3fbe38b1ed37c run #0: crashed: possible deadlock in scheduler_tick run #1: crashed: possible deadlock in scheduler_tick run #2: crashed: possible deadlock in scheduler_tick run #3: crashed: possible deadlock in rcu_report_exp_cpu_mult run #4: crashed: possible deadlock in scheduler_tick run #5: crashed: WARNING in corrupted run #6: crashed: possible deadlock in scheduler_tick run #7: crashed: possible deadlock in scheduler_tick run #8: crashed: possible deadlock in scheduler_tick run #9: crashed: possible deadlock in swake_up_one representative crash: possible deadlock in scheduler_tick, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [HANG LEAK UBSAN 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: 8357aea24a10945daf1734c27a7b3c1e9a187e4b78912f4a8141d3cf8800ee85 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 [LEAK UBSAN KASAN ATOMIC_SLEEP HANG], they are not needed testing current HEAD 909ba1f1b4146de529469910c1bd0b1248964536 testing commit 909ba1f1b4146de529469910c1bd0b1248964536 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0dcb80d4ea25510b1e401edbd205bdc5020167aa13ed7aa1085aa93b1d428e51 all runs: OK false negative chance: 0.000 # git bisect start 909ba1f1b4146de529469910c1bd0b1248964536 347385861c50adc8d4801d4b899eded38a2f04cd Bisecting: 271 revisions left to test after this (roughly 8 steps) [18c8cc6680ce938d0458859b6a08b4d34f7d8055] drm/client: Fully protect modes[] with dev->mode_config.mutex determine whether the revision contains the guilty commit revision 347385861c50adc8d4801d4b899eded38a2f04cd crashed and is reachable testing commit 18c8cc6680ce938d0458859b6a08b4d34f7d8055 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9e60571d675f85f9b68ddb5ca5829f78df55e774e722e0c7081326e3df79cdfc all runs: OK false negative chance: 0.000 # git bisect bad 18c8cc6680ce938d0458859b6a08b4d34f7d8055 Bisecting: 135 revisions left to test after this (roughly 7 steps) [bb8384b6dfbc49be230071d1e844a8741982b1ec] x86/bhi: Add BHI mitigation knob determine whether the revision contains the guilty commit revision 347385861c50adc8d4801d4b899eded38a2f04cd crashed and is reachable testing commit bb8384b6dfbc49be230071d1e844a8741982b1ec gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c2fb684c92ce2cac4f6f9cfdf5301931d8ef8dd6b4d34aed04328ba7ac21e299 all runs: OK false negative chance: 0.000 # git bisect bad bb8384b6dfbc49be230071d1e844a8741982b1ec Bisecting: 67 revisions left to test after this (roughly 6 steps) [fe74ea5b8b78d96b9ba313f070b18833a4e32b32] i40e: fix i40e_count_filters() to count only active/new filters determine whether the revision contains the guilty commit revision 347385861c50adc8d4801d4b899eded38a2f04cd crashed and is reachable testing commit fe74ea5b8b78d96b9ba313f070b18833a4e32b32 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5d911b859021dedd79774c4e665843c76232c1b4787e787d4079a4cfc19aef2a all runs: OK false negative chance: 0.000 # git bisect bad fe74ea5b8b78d96b9ba313f070b18833a4e32b32 Bisecting: 33 revisions left to test after this (roughly 5 steps) [38e3eaa861bde62b92e207b07a9dc595a784191f] Bluetooth: hci_event: set the conn encrypted before conn establishes determine whether the revision contains the guilty commit revision 347385861c50adc8d4801d4b899eded38a2f04cd crashed and is reachable testing commit 38e3eaa861bde62b92e207b07a9dc595a784191f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 86c49f3c67970c7ae8cb9915bffe4d8987328facd205bf27e666ff101243c683 run #0: crashed: possible deadlock in scheduler_tick run #1: crashed: possible deadlock in scheduler_tick run #2: crashed: possible deadlock in hrtimer_run_queues run #3: crashed: possible deadlock in rcu_report_exp_cpu_mult run #4: crashed: possible deadlock in scheduler_tick run #5: crashed: WARNING in cgroup_base_stat_cputime_account_end run #6: crashed: possible deadlock in rcu_report_exp_cpu_mult run #7: crashed: possible deadlock in scheduler_tick run #8: crashed: possible deadlock in rcu_report_exp_cpu_mult run #9: crashed: WARNING in call_rcu representative crash: possible deadlock in scheduler_tick, types: [LOCKDEP] # git bisect good 38e3eaa861bde62b92e207b07a9dc595a784191f Bisecting: 16 revisions left to test after this (roughly 4 steps) [10608161696c2768f53426642f78a42bcaaa53e8] net: phy: micrel: Fix potential null pointer dereference determine whether the revision contains the guilty commit revision 347385861c50adc8d4801d4b899eded38a2f04cd crashed and is reachable testing commit 10608161696c2768f53426642f78a42bcaaa53e8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 78199abd4fc38628ef56891a451a603bbbf956205d041cb89baf3aed60211ccf all runs: OK false negative chance: 0.000 # git bisect bad 10608161696c2768f53426642f78a42bcaaa53e8 Bisecting: 8 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 38e3eaa861bde62b92e207b07a9dc595a784191f 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: cbac0de35990b27cc039e17a66ad7180faad6925c13d4d5ed4dae2ee904ec5e6 run #0: crashed: WARNING in call_rcu run #1: crashed: possible deadlock in scheduler_tick run #2: crashed: possible deadlock in scheduler_tick run #3: crashed: possible deadlock in scheduler_tick run #4: crashed: possible deadlock in scheduler_tick run #5: crashed: possible deadlock in scheduler_tick run #6: crashed: WARNING in call_rcu run #7: crashed: possible deadlock in rcu_report_exp_cpu_mult run #8: crashed: possible deadlock in scheduler_tick run #9: crashed: possible deadlock in scheduler_tick representative crash: possible deadlock in scheduler_tick, types: [LOCKDEP] # git bisect good 4e8447a9a3d367b5065a0b7abe101da6e0037b6e Bisecting: 4 revisions left to test after this (roughly 2 steps) [a44770fed86515eedb5a7c00b787f847ebb134a5] bpf, sockmap: Prevent lock inversion deadlock in map delete elem determine whether the revision contains the guilty commit revision 38e3eaa861bde62b92e207b07a9dc595a784191f 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: 9383c72f14e30b029999c82cd23806feb422857d442891fecd35124c4035af77 all runs: OK false negative chance: 0.000 # git bisect bad a44770fed86515eedb5a7c00b787f847ebb134a5 Bisecting: 1 revision left to test after this (roughly 1 step) [18aae2cb87e5faa9c5bd865260ceadac60d5a6c5] netfilter: validate user input for expected length determine whether the revision contains the guilty commit revision 347385861c50adc8d4801d4b899eded38a2f04cd crashed and is reachable testing commit 18aae2cb87e5faa9c5bd865260ceadac60d5a6c5 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a5bf0570af3a2036f63f058fe1665f034cddfb8b59eef71534646be0d3d522b2 run #0: crashed: WARNING in call_rcu run #1: crashed: WARNING in call_rcu run #2: crashed: possible deadlock in scheduler_tick run #3: crashed: WARNING in call_rcu run #4: crashed: possible deadlock in rcu_report_exp_cpu_mult run #5: crashed: possible deadlock in scheduler_tick run #6: crashed: possible deadlock in scheduler_tick run #7: crashed: possible deadlock in rcu_report_exp_cpu_mult run #8: crashed: possible deadlock in scheduler_tick run #9: crashed: possible deadlock in scheduler_tick representative crash: possible deadlock in scheduler_tick, types: [LOCKDEP WARNING] # git bisect good 18aae2cb87e5faa9c5bd865260ceadac60d5a6c5 Bisecting: 0 revisions left to test after this (roughly 0 steps) [8a57544e9285a16dce8e58f470a1b30f426812c4] vboxsf: Avoid an spurious warning if load_nls_xxx() fails determine whether the revision contains the guilty commit revision 38e3eaa861bde62b92e207b07a9dc595a784191f 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: 6c184cb0fae44d3884e5a24b016f50804310d3cf1e3eec04c2bd271eadd883e7 run #0: crashed: possible deadlock in scheduler_tick run #1: crashed: possible deadlock in swake_up_one run #2: crashed: possible deadlock in rcu_report_exp_cpu_mult run #3: crashed: WARNING in sock_map_delete_elem run #4: crashed: possible deadlock in scheduler_tick run #5: crashed: possible deadlock in scheduler_tick run #6: crashed: possible deadlock in scheduler_tick run #7: crashed: WARNING in sock_map_delete_elem run #8: crashed: possible deadlock in scheduler_tick run #9: crashed: possible deadlock in scheduler_tick representative crash: possible deadlock in scheduler_tick, types: [LOCKDEP] # git bisect good 8a57544e9285a16dce8e58f470a1b30f426812c4 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: 9383c72f14e30b029999c82cd23806feb422857d442891fecd35124c4035af77 parent signature: 6c184cb0fae44d3884e5a24b016f50804310d3cf1e3eec04c2bd271eadd883e7 revisions tested: 17, total time: 2h57m27.452731096s (build: 47m30.867325613s, test: 2h4m55.22861571s) 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): []