ci2 starts bisection 2025-12-29 02:56:46.513734306 +0000 UTC m=+2813218.690857393 bisecting fixing commit since 7e89efd3ae1cfa05fe918588a92628b9bbeda4b2 building syzkaller on 6f4edef43e90da260aa93c16da223a2a5569c978 ensuring issue is reproducible on original commit 7e89efd3ae1cfa05fe918588a92628b9bbeda4b2 testing commit 7e89efd3ae1cfa05fe918588a92628b9bbeda4b2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6579718d82085180b39ee27e1879d68a41695a7540dda943afa3a78ddf39aff8 run #0: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #1: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #2: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #3: crashed: possible deadlock in try_to_wake_up run #4: crashed: possible deadlock in try_to_wake_up run #5: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #6: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #7: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #8: crashed: possible deadlock in try_to_wake_up run #9: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #10: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #11: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #12: crashed: possible deadlock in try_to_wake_up run #13: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #14: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #15: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #16: crashed: possible deadlock in try_to_wake_up run #17: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #18: crashed: possible deadlock in try_to_wake_up run #19: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned representative crash: inconsistent lock state in __mmap_lock_do_trace_acquire_returned, types: [LOCKDEP] check whether we can drop unnecessary instrumentation disabling configs for [hang memleak ubsan bug_or_warning kasan atomic_sleep], they are not needed testing commit 7e89efd3ae1cfa05fe918588a92628b9bbeda4b2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ec8a984a554b4690f8a50639a678e1ad11b029e13092624aa4121a74bbeff630 run #0: crashed: possible deadlock in try_to_wake_up run #1: crashed: possible deadlock in try_to_wake_up run #2: crashed: possible deadlock in try_to_wake_up run #3: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #4: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #5: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #6: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #7: crashed: possible deadlock in try_to_wake_up run #8: crashed: possible deadlock in try_to_wake_up run #9: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned representative crash: possible deadlock in try_to_wake_up, types: [LOCKDEP] the bug reproduces without the instrumentation disabling configs for [bug_or_warning kasan atomic_sleep hang memleak ubsan], they are not needed kconfig minimization: base=3707 full=7299 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_or_warning kasan atomic_sleep hang memleak ubsan], they are not needed testing commit 7e89efd3ae1cfa05fe918588a92628b9bbeda4b2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bfc1138ddc0f7f703ed8e6a067ba127c520163b1f795e84daf97f002168f9dda run #0: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #1: crashed: possible deadlock in try_to_wake_up run #2: crashed: possible deadlock in try_to_wake_up run #3: crashed: possible deadlock in try_to_wake_up run #4: crashed: possible deadlock in try_to_wake_up run #5: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #6: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #7: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #8: crashed: possible deadlock in try_to_wake_up run #9: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned representative crash: inconsistent lock state in __mmap_lock_do_trace_acquire_returned, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [memleak ubsan bug_or_warning kasan atomic_sleep hang], they are not needed testing commit 7e89efd3ae1cfa05fe918588a92628b9bbeda4b2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b2fd3320a4e986b8f545e44d9f5ad3332c85949fd4a01f28dc3ffadd04d33e53 run #0: crashed: possible deadlock in try_to_wake_up run #1: crashed: possible deadlock in try_to_wake_up run #2: crashed: possible deadlock in try_to_wake_up run #3: crashed: possible deadlock in try_to_wake_up run #4: crashed: possible deadlock in try_to_wake_up run #5: crashed: possible deadlock in try_to_wake_up run #6: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #7: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #8: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #9: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned representative crash: possible deadlock in try_to_wake_up, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [kasan atomic_sleep hang memleak ubsan bug_or_warning], they are not needed testing commit 7e89efd3ae1cfa05fe918588a92628b9bbeda4b2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5fe0b9a3bbeef2b7fb1c08c21bade616e68c297ae4e87016a05e29bc3733d965 run #0: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #1: crashed: possible deadlock in try_to_wake_up run #2: crashed: possible deadlock in try_to_wake_up run #3: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #4: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #5: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #6: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #7: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned run #8: crashed: possible deadlock in try_to_wake_up run #9: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned representative crash: inconsistent lock state in __mmap_lock_do_trace_acquire_returned, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [bug_or_warning kasan atomic_sleep hang memleak ubsan], they are not needed testing commit 7e89efd3ae1cfa05fe918588a92628b9bbeda4b2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2ebb8b02c1988565f682a7f64e7760d06e5557ba614ea841e0c7f3dc862803b9 all runs: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned representative crash: inconsistent lock state in __mmap_lock_do_trace_acquire_returned, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [bug_or_warning kasan atomic_sleep hang memleak ubsan], they are not needed testing commit 7e89efd3ae1cfa05fe918588a92628b9bbeda4b2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e5aa5941e667f45102dc671a735dcbdaf463ab75daf87a271ce92dc0a457cfcf 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 [atomic_sleep hang memleak ubsan bug_or_warning kasan], they are not needed testing current HEAD 68efe5a6c16a05391e3d96025b41e9bf573f968c testing commit 68efe5a6c16a05391e3d96025b41e9bf573f968c gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bbad1cf258b5bd3e801e5279538e03b3cc5a691ff165ce379af202e3eec64135 all runs: OK false negative chance: 0.000 # git bisect start 68efe5a6c16a05391e3d96025b41e9bf573f968c 7e89efd3ae1cfa05fe918588a92628b9bbeda4b2 Bisecting: 3415 revisions left to test after this (roughly 12 steps) [455217ac9db0cf9349b3933664355e907bb1a569] net: gso: fix ownership in __udp_gso_segment determine whether the revision contains the guilty commit revision 7e89efd3ae1cfa05fe918588a92628b9bbeda4b2 crashed and is reachable testing commit 455217ac9db0cf9349b3933664355e907bb1a569 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8596992cda9cbc3bfa1045f50bad89c4cc1283e14b2c925926b9a363ef62e4b6 all runs: OK false negative chance: 0.000 # git bisect bad 455217ac9db0cf9349b3933664355e907bb1a569 Bisecting: 1706 revisions left to test after this (roughly 11 steps) [6a5de8753c70d30846a9dca5725a2edcd5aabe51] KVM: s390: gaccess: Check if guest address is in memslot determine whether the revision contains the guilty commit revision 7e89efd3ae1cfa05fe918588a92628b9bbeda4b2 crashed and is reachable testing commit 6a5de8753c70d30846a9dca5725a2edcd5aabe51 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 55732fec480016c70713f32d1b0b4f864b18de0d6304e75afad00c8cbac90123 all runs: OK false negative chance: 0.000 # git bisect bad 6a5de8753c70d30846a9dca5725a2edcd5aabe51 Bisecting: 852 revisions left to test after this (roughly 10 steps) [86b4f5cf91ca03c08e3822ac89476a677a780bcc] HID: amd_sfh: free driver_data after destroying hid device determine whether the revision contains the guilty commit revision 7e89efd3ae1cfa05fe918588a92628b9bbeda4b2 crashed and is reachable testing commit 86b4f5cf91ca03c08e3822ac89476a677a780bcc gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f5aca8f67456523c0748314fddcb72490bca0050c49fe4c0030c0433df9b8a8c all runs: OK false negative chance: 0.000 # git bisect bad 86b4f5cf91ca03c08e3822ac89476a677a780bcc Bisecting: 425 revisions left to test after this (roughly 9 steps) [eb044b9c234f9af51cdd72e70900fd1b6a5af8f7] timekeeping: Fix bogus clock_was_set() invocation in do_adjtimex() determine whether the revision contains the guilty commit revision 7e89efd3ae1cfa05fe918588a92628b9bbeda4b2 crashed and is reachable testing commit eb044b9c234f9af51cdd72e70900fd1b6a5af8f7 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b2463ff3344ebdb2bbfc0875a6f4c43c76bef58b8de599246afd0fa477e84ace all runs: OK false negative chance: 0.000 # git bisect bad eb044b9c234f9af51cdd72e70900fd1b6a5af8f7 Bisecting: 212 revisions left to test after this (roughly 8 steps) [dcaa88c2c1d993fc0068dfc69c6731a17ac830d6] mm/numa_balancing: teach mpol_to_str about the balancing mode determine whether the revision contains the guilty commit revision 7e89efd3ae1cfa05fe918588a92628b9bbeda4b2 crashed and is reachable testing commit dcaa88c2c1d993fc0068dfc69c6731a17ac830d6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f7f0bfc1f6fee21de374b77de543fe2948b1f8578d0bab55f049dd0ec95a6b9b all runs: OK false negative chance: 0.000 # git bisect bad dcaa88c2c1d993fc0068dfc69c6731a17ac830d6 Bisecting: 106 revisions left to test after this (roughly 7 steps) [533ae7fef3590b113a4087c22e3ca98ead0938db] SUNRPC: avoid soft lockup when transmitting UDP to reachable server. determine whether the revision contains the guilty commit revision 7e89efd3ae1cfa05fe918588a92628b9bbeda4b2 crashed and is reachable testing commit 533ae7fef3590b113a4087c22e3ca98ead0938db gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 41af0e8facfbe2c33c938c265167a1250f74c912791feecff62b21ae58684918 all runs: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned representative crash: inconsistent lock state in __mmap_lock_do_trace_acquire_returned, types: [LOCKDEP] # git bisect good 533ae7fef3590b113a4087c22e3ca98ead0938db Bisecting: 53 revisions left to test after this (roughly 6 steps) [916c648323fa53b89eedb34a0988ddaf01406117] landlock: Don't lose track of restrictions on cred_transfer determine whether the revision contains the guilty commit revision 533ae7fef3590b113a4087c22e3ca98ead0938db crashed and is reachable testing commit 916c648323fa53b89eedb34a0988ddaf01406117 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c6f9916c46f334ec627784f4fce664337b6f3f805cef5494d78af6e1784a8071 all runs: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned representative crash: inconsistent lock state in __mmap_lock_do_trace_acquire_returned, types: [LOCKDEP] # git bisect good 916c648323fa53b89eedb34a0988ddaf01406117 Bisecting: 26 revisions left to test after this (roughly 5 steps) [6b2e11d782eb327ede0391f2f4981956119f4598] io_uring: tighten task exit cancellations determine whether the revision contains the guilty commit revision 533ae7fef3590b113a4087c22e3ca98ead0938db crashed and is reachable testing commit 6b2e11d782eb327ede0391f2f4981956119f4598 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 952c108c38eba77d50c2d2feff8ca6a62cf35a580cf2cd5e8245668b7d23b35b all runs: OK false negative chance: 0.000 # git bisect bad 6b2e11d782eb327ede0391f2f4981956119f4598 Bisecting: 13 revisions left to test after this (roughly 4 steps) [d55aae5c1730d6b70d5d8eaff00113cd34772ea3] hfs: fix to initialize fields of hfs_inode_info after hfs_alloc_inode() determine whether the revision contains the guilty commit revision 533ae7fef3590b113a4087c22e3ca98ead0938db crashed and is reachable testing commit d55aae5c1730d6b70d5d8eaff00113cd34772ea3 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 93b0644d9660052e8171ae62c1c2ab24f0c75505686fd03f9d800d14480855ad all runs: OK false negative chance: 0.000 # git bisect bad d55aae5c1730d6b70d5d8eaff00113cd34772ea3 Bisecting: 6 revisions left to test after this (roughly 3 steps) [d0a1f9aa70f0d8a05b6320e8a3f3b83adab8dac3] af_packet: Handle outgoing VLAN packets without hardware offloading determine whether the revision contains the guilty commit revision 533ae7fef3590b113a4087c22e3ca98ead0938db crashed and is reachable testing commit d0a1f9aa70f0d8a05b6320e8a3f3b83adab8dac3 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6807849ba25acc99d8a2cc942f62aaeef7b7a0bd69970f6f2cab13fb62877e29 run #0: crashed: no output from test machine run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: no output from test machine, types: [UNKNOWN] unable to determine the verdict: 9 good runs (wanted 5), for bad wanted 5 in total, got 10 # git bisect skip d0a1f9aa70f0d8a05b6320e8a3f3b83adab8dac3 Bisecting: 5 revisions left to test after this (roughly 3 steps) [a3578d3bf87d65024475d5ff46a2dba54939ddf1] ipv6: take care of scope when choosing the src addr determine whether the revision contains the guilty commit revision d0a1f9aa70f0d8a05b6320e8a3f3b83adab8dac3 crashed and is reachable testing commit a3578d3bf87d65024475d5ff46a2dba54939ddf1 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8ed5e6f949f1f91cde33fee0dd52dbf97e7a71cd5bc57e2e07b0cbb9f15fdf74 all runs: OK false negative chance: 0.000 # git bisect bad a3578d3bf87d65024475d5ff46a2dba54939ddf1 Bisecting: 3 revisions left to test after this (roughly 2 steps) [8b6ad5840fab3804194d318801115d97a8e1d742] dt-bindings: thermal: correct thermal zone node name limit determine whether the revision contains the guilty commit revision 533ae7fef3590b113a4087c22e3ca98ead0938db crashed and is reachable testing commit 8b6ad5840fab3804194d318801115d97a8e1d742 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 39cdba89ff1140c61756f239d61927c96ee95c0b1cb8a6aa190a6957835ae930 all runs: OK false negative chance: 0.000 # git bisect bad 8b6ad5840fab3804194d318801115d97a8e1d742 Bisecting: 0 revisions left to test after this (roughly 1 step) [d240b789dded28e4fb9f28b4265dbaf67050d870] mm: mmap_lock: replace get_memcg_path_buf() with on-stack buffer determine whether the revision contains the guilty commit revision 7e89efd3ae1cfa05fe918588a92628b9bbeda4b2 crashed and is reachable testing commit d240b789dded28e4fb9f28b4265dbaf67050d870 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 39cdba89ff1140c61756f239d61927c96ee95c0b1cb8a6aa190a6957835ae930 all runs: OK false negative chance: 0.000 # git bisect bad d240b789dded28e4fb9f28b4265dbaf67050d870 Bisecting: 0 revisions left to test after this (roughly 0 steps) [fa774151f9b74a6b5a85cff1c9f876ad1f0db62a] mm/hugetlb: fix possible recursive locking detected warning determine whether the revision contains the guilty commit revision 7e89efd3ae1cfa05fe918588a92628b9bbeda4b2 crashed and is reachable testing commit fa774151f9b74a6b5a85cff1c9f876ad1f0db62a gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0a38b946fa59df5002092af355d8d2a47380f250519b1c0dd024ad7ce3f9abd0 all runs: crashed: inconsistent lock state in __mmap_lock_do_trace_acquire_returned representative crash: inconsistent lock state in __mmap_lock_do_trace_acquire_returned, types: [LOCKDEP] # git bisect good fa774151f9b74a6b5a85cff1c9f876ad1f0db62a d240b789dded28e4fb9f28b4265dbaf67050d870 is the first bad commit commit d240b789dded28e4fb9f28b4265dbaf67050d870 Author: Tetsuo Handa Date: Fri Jun 21 10:08:41 2024 +0900 mm: mmap_lock: replace get_memcg_path_buf() with on-stack buffer commit 7d6be67cfdd4a53cea7147313ca13c531e3a470f upstream. Commit 2b5067a8143e ("mm: mmap_lock: add tracepoints around lock acquisition") introduced TRACE_MMAP_LOCK_EVENT() macro using preempt_disable() in order to let get_mm_memcg_path() return a percpu buffer exclusively used by normal, softirq, irq and NMI contexts respectively. Commit 832b50725373 ("mm: mmap_lock: use local locks instead of disabling preemption") replaced preempt_disable() with local_lock(&memcg_paths.lock) based on an argument that preempt_disable() has to be avoided because get_mm_memcg_path() might sleep if PREEMPT_RT=y. But syzbot started reporting inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. and inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. messages, for local_lock() does not disable IRQ. We could replace local_lock() with local_lock_irqsave() in order to suppress these messages. But this patch instead replaces percpu buffers with on-stack buffer, for the size of each buffer returned by get_memcg_path_buf() is only 256 bytes which is tolerable for allocating from current thread's kernel stack memory. Link: https://lkml.kernel.org/r/ef22d289-eadb-4ed9-863b-fbc922b33d8d@I-love.SAKURA.ne.jp Reported-by: syzbot Closes: https://syzkaller.appspot.com/bug?extid=40905bca570ae6784745 Fixes: 832b50725373 ("mm: mmap_lock: use local locks instead of disabling preemption") Signed-off-by: Tetsuo Handa Reviewed-by: Axel Rasmussen Cc: Nicolas Saenz Julienne Cc: Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman mm/mmap_lock.c | 175 +++++++-------------------------------------------------- 1 file changed, 20 insertions(+), 155 deletions(-) accumulated error probability: 0.00 culprit signature: 39cdba89ff1140c61756f239d61927c96ee95c0b1cb8a6aa190a6957835ae930 parent signature: 0a38b946fa59df5002092af355d8d2a47380f250519b1c0dd024ad7ce3f9abd0 revisions tested: 22, total time: 5h31m57.474006491s (build: 1h13m30.004500093s, test: 4h12m8.692494472s) first good commit: d240b789dded28e4fb9f28b4265dbaf67050d870 mm: mmap_lock: replace get_memcg_path_buf() with on-stack buffer recipients (to): ["akpm@linux-foundation.org" "axelrasmussen@google.com" "gregkh@linuxfoundation.org" "penguin-kernel@i-love.sakura.ne.jp"] recipients (cc): []