ci2 starts bisection 2023-12-29 09:27:36.178414491 +0000 UTC m=+581859.502300042 bisecting fixing commit since ca48fc16c49388400eddd6c6614593ebf7c7726a building syzkaller on 90c93c40627cb0ac3c2c7cb99d807fd4c137adcb ensuring issue is reproducible on original commit ca48fc16c49388400eddd6c6614593ebf7c7726a testing commit ca48fc16c49388400eddd6c6614593ebf7c7726a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3a327510f61a7df890f2a4ce537a5bacef9a28472d6799d3c27bcc585cc84d7a run #0: crashed: kernel BUG in folio_end_writeback run #1: crashed: kernel BUG in folio_end_writeback run #2: crashed: kernel BUG in folio_end_writeback run #3: crashed: kernel BUG in folio_end_writeback 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: kernel BUG in end_buffer_async_write run #8: crashed: kernel BUG in end_buffer_async_write run #9: crashed: kernel BUG in end_buffer_async_write run #10: crashed: INFO: rcu detected stall in corrupted run #11: crashed: INFO: rcu detected stall in corrupted run #12: crashed: INFO: rcu detected stall in corrupted run #13: crashed: kernel BUG in end_buffer_async_write 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: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG BUG] check whether we can drop unnecessary instrumentation disabling configs for [ATOMIC_SLEEP LEAK UBSAN KASAN LOCKDEP], they are not needed testing commit ca48fc16c49388400eddd6c6614593ebf7c7726a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8ff9cf8c10906af288062f3f99f38fa8ef840d9241752fe97cef8094e94ca717 run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: kernel BUG in folio_end_writeback run #4: crashed: INFO: rcu detected stall in corrupted run #5: crashed: kernel BUG in end_buffer_async_write run #6: crashed: kernel BUG in folio_end_writeback run #7: OK run #8: OK run #9: OK representative crash: INFO: rcu detected stall in corrupted, types: [HANG BUG] the bug reproduces without the instrumentation disabling configs for [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed kconfig minimization: base=3820 full=7524 leaves diff=1994 split chunks (needed=false): <1994> split chunk #0 of len 1994 into 5 parts testing without sub-chunk 1/5 disabling configs for [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit ca48fc16c49388400eddd6c6614593ebf7c7726a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4e64d2f759e5d1e0d28aaee6bfaf526cb201dcb8271826b7c38fa2c5c55beff3 run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: kernel BUG in folio_end_writeback run #4: crashed: kernel BUG in folio_end_writeback run #5: crashed: kernel BUG in folio_end_writeback run #6: OK run #7: OK run #8: OK run #9: OK representative crash: INFO: rcu detected stall in corrupted, types: [HANG BUG] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed testing commit ca48fc16c49388400eddd6c6614593ebf7c7726a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f8a6a4d1d223fdfd76406fedc2cda1ab1f3f9998f6b9582f5a3d47ffe57e9fc8 run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: kernel BUG in end_buffer_async_write run #4: crashed: kernel BUG in folio_end_writeback run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: INFO: rcu detected stall in corrupted, types: [HANG BUG] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN KASAN], they are not needed testing commit ca48fc16c49388400eddd6c6614593ebf7c7726a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6280afed526257bd940762479bbe33b47aa8329b5ee24c5b8099072e98095fba run #0: crashed: kernel BUG in folio_end_writeback run #1: crashed: kernel BUG in folio_end_writeback run #2: crashed: kernel BUG in folio_end_writeback run #3: crashed: kernel BUG in end_buffer_async_write run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: kernel BUG in folio_end_writeback, types: [BUG] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit ca48fc16c49388400eddd6c6614593ebf7c7726a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bf82ccb6b78c317003a6f35f648b4d1ff985fc049c7aeb7b782bcc491548abc3 all runs: OK false negative chance: 0.000 testing without sub-chunk 5/5 disabling configs for [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit ca48fc16c49388400eddd6c6614593ebf7c7726a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 79045cf55eedbb6fb50148f9ba761ce0eddcf9739e5f35b679d3aa728a69298a run #0: crashed: kernel BUG in end_buffer_async_write run #1: crashed: kernel BUG in folio_end_writeback run #2: crashed: kernel BUG in folio_end_writeback run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: kernel BUG in end_buffer_async_write, types: [BUG] minimized to 797 configs; suspects: [AF_RXRPC ARCH_ENABLE_MEMORY_HOTREMOVE ATM AX25 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 DAX DLM DVB_CORE ENCRYPTED_KEYS EXTCON FB GENEVE GPIOLIB HAMRADIO HAVE_CLK HID_SENSOR_HUB HID_SMARTJOYPLUS HID_THRUSTMASTER HID_ZEROPLUS I2C_MUX IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_IPOIB INFINIBAND_USER_ACCESS INFINIBAND_VIRT_DMA INPUT_TABLET INPUT_TOUCHSCREEN IP_SCTP IRQ_REMAP KVM KVM_INTEL L2TP LIBNVDIMM MEDIA_ANALOG_TV_SUPPORT MEDIA_CAMERA_SUPPORT MEDIA_CEC_SUPPORT MEDIA_COMMON_OPTIONS 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_DLN2 MFD_RETU MFD_VIPERBOARD MMC MTD MTD_UBI NETFILTER_CONNCOUNT NET_IPGRE NET_IPGRE_DEMUX NFS_V4_1 NF_SOCKET_IPV6 NF_TABLES NF_TABLES_ARP NF_TPROXY_IPV4 NF_TPROXY_IPV6 NILFS2_FS NLMON NLS_CODEPAGE_1250 NLS_CODEPAGE_1251 NLS_CODEPAGE_737 NLS_CODEPAGE_775 NLS_CODEPAGE_850 NLS_CODEPAGE_852 NLS_CODEPAGE_855 NLS_CODEPAGE_857 NLS_CODEPAGE_860 NLS_CODEPAGE_861 NLS_CODEPAGE_862 NLS_CODEPAGE_863 NLS_CODEPAGE_864 NLS_CODEPAGE_865 NLS_CODEPAGE_866 NLS_CODEPAGE_869 NLS_CODEPAGE_874 NLS_CODEPAGE_932 NLS_CODEPAGE_936 NLS_CODEPAGE_949 NLS_CODEPAGE_950 NLS_ISO8859_13 NLS_ISO8859_14 NLS_ISO8859_15 NLS_ISO8859_2 NLS_ISO8859_3 NLS_ISO8859_4 NLS_ISO8859_5 NLS_ISO8859_6 NLS_ISO8859_7 NLS_ISO8859_8 NLS_ISO8859_9 NLS_KOI8_R NLS_KOI8_U NLS_MAC_CELTIC NLS_MAC_CENTEURO NLS_MAC_CROATIAN NLS_MAC_CYRILLIC NLS_MAC_GAELIC NLS_MAC_GREEK NLS_MAC_ICELAND NLS_MAC_INUIT NLS_MAC_ROMAN NLS_MAC_ROMANIAN NLS_MAC_TURKISH NOP_USB_XCEIV NOZOMI NTFS3_FS NTFS3_FS_POSIX_ACL NTFS3_LZX_XPRESS NTFS_FS NTFS_RW NULL_TTY NUMA_BALANCING NUMA_BALANCING_DEFAULT_ENABLED NUMA_EMU NUMA_KEEP_MEMINFO NVDIMM_DAX NVDIMM_KEYS NVDIMM_PFN NVME_CORE NVME_FABRICS NVME_FC NVME_MULTIPATH NVME_RDMA NVME_TARGET NVME_TARGET_FC NVME_TARGET_FCLOOP NVME_TARGET_LOOP NVME_TARGET_RDMA NVME_TARGET_TCP NVME_TCP N_GSM N_HDLC OCFS2_DEBUG_FS OCFS2_FS OCFS2_FS_O2CB OCFS2_FS_STATS OCFS2_FS_USERSPACE_CLUSTER OF_GPIO OF_PMEM OMFS_FS OPENVSWITCH OPENVSWITCH_GENEVE OPENVSWITCH_GRE OPENVSWITCH_VXLAN ORANGEFS_FS OSF_PARTITION OVERLAY_FS OVERLAY_FS_INDEX OVERLAY_FS_REDIRECT_ALWAYS_FOLLOW OVERLAY_FS_REDIRECT_DIR PACKET_DIAG PADATA PAGE_IDLE_FLAG PAGE_POOL PAGE_REPORTING PAHOLE_HAS_SPLIT_BTF PARPORT PARPORT_NOT_PC PARTITION_ADVANCED PCCARD PCCARD_NONSTATIC PCIEAER PCI_ENDPOINT PCI_IOV PCMCIA PCMCIA_LOAD_CIS PERCPU_STATS PERSISTENT_KEYRINGS PHONET PHYLINK PHY_CPCAP_USB PHY_QCOM_USB_HS PHY_QCOM_USB_HSIC PHY_SAMSUNG_USB2 PHY_TUSB1210 PKCS7_TEST_KEY PKCS8_PRIVATE_KEY_PARSER PM_CLK PNFS_BLOCK PNFS_FILE_LAYOUT PNFS_FLEXFILE_LAYOUT PPP PPPOATM PPPOE PPPOL2TP PPP_ASYNC PPP_BSDCOMP PPP_DEFLATE PPP_FILTER PPP_MPPE PPP_MULTILINK PPP_SYNC_TTY PPTP PREEMPT PREEMPT_NOTIFIERS PRISM2_USB PROC_CHILDREN PSI PSTORE PSTORE_842_COMPRESS PSTORE_COMPRESS PSTORE_DEFLATE_COMPRESS PSTORE_DEFLATE_COMPRESS_DEFAULT PSTORE_LZ4HC_COMPRESS PSTORE_LZ4_COMPRESS PSTORE_LZO_COMPRESS PSTORE_ZSTD_COMPRESS QCOM_QMI_HELPERS QNX4FS_FS QNX6FS_FS QRTR QRTR_TUN R8712U RADIO_ADAPTERS RADIO_SHARK RADIO_SHARK2 RADIO_SI470X RADIO_SI4713 RADIO_TEA575X RAID6_PQ RAID_ATTRS RC_ATI_REMOTE RC_CORE RC_DEVICES RDMA_RXE RDMA_SIW RDS RDS_RDMA RDS_TCP READ_ONLY_THP_FOR_FS REALTEK_AUTOPM REED_SOLOMON REED_SOLOMON_DEC8 REGMAP REGMAP_I2C REGMAP_IRQ REGMAP_MMIO REGULATOR REGULATOR_TWL4030 REISERFS_FS REISERFS_FS_POSIX_ACL REISERFS_FS_SECURITY REISERFS_FS_XATTR REISERFS_PROC_INFO RESET_CONTROLLER RFKILL RFKILL_INPUT RFKILL_LEDS RMI4_2D_SENSOR RMI4_CORE RMI4_F03 RMI4_F03_SERIO RMI4_F11 RMI4_F12 RMI4_F30 ROMFS_BACKED_BY_BOTH ROMFS_FS ROMFS_ON_BLOCK 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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_ROLE_SWITCH 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_REALTEK 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 VXLAN 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 XFS_SUPPORT_V4 XOR_BLOCKS YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZBUD ZEROPLUS_FF ZLIB_DEFLATE ZONEFS_FS ZONE_DEVICE ZPOOL ZRAM ZRAM_DEF_COMP_LZORLE ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_LZO ZSWAP_ZPOOL_DEFAULT_ZBUD] disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed testing current HEAD 4aa6747d935281df8a1888feeb6e22e0097d0b86 testing commit 4aa6747d935281df8a1888feeb6e22e0097d0b86 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f619666ef1eec191ed1d003f446d3db957ddb13fa29feae7ca608fcdb31304e8 all runs: OK false negative chance: 0.000 # git bisect start 4aa6747d935281df8a1888feeb6e22e0097d0b86 ca48fc16c49388400eddd6c6614593ebf7c7726a Bisecting: 3530 revisions left to test after this (roughly 12 steps) [b249c510b43ea77821fe85cbad2d7faab7510998] mptcp: fix the incorrect judgment for msk->cb_flags determine whether the revision contains the guilty commit revision ca48fc16c49388400eddd6c6614593ebf7c7726a crashed and is reachable testing commit b249c510b43ea77821fe85cbad2d7faab7510998 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a2b690250f2f6c8ef6b02bfe15db8a5ac5cdd89218d60a4bab42ee2b55e5550c all runs: OK false negative chance: 0.000 # git bisect bad b249c510b43ea77821fe85cbad2d7faab7510998 Bisecting: 1763 revisions left to test after this (roughly 11 steps) [b4e5d0c4cf07caef4b596a7afe0b4ad8e15d8283] net/sched: simplify tcf_pedit_act determine whether the revision contains the guilty commit revision ca48fc16c49388400eddd6c6614593ebf7c7726a crashed and is reachable testing commit b4e5d0c4cf07caef4b596a7afe0b4ad8e15d8283 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5829404b498187e9275bc7626c11f039a8a0447b2013d8d56f0a9d2bcd2f8f87 run #0: crashed: kernel BUG in folio_end_writeback run #1: crashed: kernel BUG in end_buffer_async_write run #2: crashed: kernel BUG in folio_end_writeback run #3: crashed: kernel BUG in end_buffer_async_write run #4: crashed: kernel BUG in folio_end_writeback run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: kernel BUG in folio_end_writeback, types: [BUG] # git bisect good b4e5d0c4cf07caef4b596a7afe0b4ad8e15d8283 Bisecting: 881 revisions left to test after this (roughly 10 steps) [fd5b64c1cf41c15303b19bead2d9a0c3d30911bd] swiotlb: reduce the number of areas to match actual memory pool size determine whether the revision contains the guilty commit revision b4e5d0c4cf07caef4b596a7afe0b4ad8e15d8283 crashed and is reachable testing commit fd5b64c1cf41c15303b19bead2d9a0c3d30911bd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9ff1077fe73aacd27771a6eac028691222a889e8230b0e8ab250813b80e34255 all runs: OK false negative chance: 0.000 # git bisect bad fd5b64c1cf41c15303b19bead2d9a0c3d30911bd Bisecting: 440 revisions left to test after this (roughly 9 steps) [50fb32197f60333666dac9ae23aa107d2c9ad8ba] mm: call arch_swap_restore() from do_swap_page() determine whether the revision contains the guilty commit revision b4e5d0c4cf07caef4b596a7afe0b4ad8e15d8283 crashed and is reachable testing commit 50fb32197f60333666dac9ae23aa107d2c9ad8ba gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4abeb80a1d467829ad012927f927206bf190610497ded0099aef400f6d14735e run #0: crashed: kernel BUG in end_buffer_async_write 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 run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: kernel BUG in end_buffer_async_write, types: [BUG] # git bisect good 50fb32197f60333666dac9ae23aa107d2c9ad8ba Bisecting: 220 revisions left to test after this (roughly 8 steps) [6f1c81886b0b56cb88b311e5d2f203625474d892] btrfs: fix race when deleting free space root from the dirty cow roots list determine whether the revision contains the guilty commit revision ca48fc16c49388400eddd6c6614593ebf7c7726a crashed and is reachable testing commit 6f1c81886b0b56cb88b311e5d2f203625474d892 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b4f9fae0d325e10634b1f874affa783767cf3083e26d6988dd3b9b50b3ccf6f7 all runs: OK false negative chance: 0.016 # git bisect bad 6f1c81886b0b56cb88b311e5d2f203625474d892 Bisecting: 109 revisions left to test after this (roughly 7 steps) [af8affd12375f01905977780d7f98ee83e22ded3] drm/msm/dpu: correct MERGE_3D length determine whether the revision contains the guilty commit revision 50fb32197f60333666dac9ae23aa107d2c9ad8ba crashed and is reachable testing commit af8affd12375f01905977780d7f98ee83e22ded3 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0daf0ac9145ec1c91399d37019a2182a5907690913c70c0c0e30f42af345f3b1 all runs: OK false negative chance: 0.016 # git bisect bad af8affd12375f01905977780d7f98ee83e22ded3 Bisecting: 54 revisions left to test after this (roughly 6 steps) [9f79e638d45100dad43c56ad9b47eaff1b98fe9a] memory: brcmstb_dpfe: fix testing array offset after use determine whether the revision contains the guilty commit revision ca48fc16c49388400eddd6c6614593ebf7c7726a crashed and is reachable testing commit 9f79e638d45100dad43c56ad9b47eaff1b98fe9a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 54694a64ec33d01781e2d2167d296fa7e134e6b0c366606a76f08c46a3e865e5 run #0: crashed: kernel BUG in folio_end_writeback run #1: crashed: kernel BUG in folio_end_writeback run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: kernel BUG in folio_end_writeback, types: [BUG] # git bisect good 9f79e638d45100dad43c56ad9b47eaff1b98fe9a Bisecting: 27 revisions left to test after this (roughly 5 steps) [78cb71dd609b4348b1fd5152c46df041c4125fe4] HID: uclogic: Modular KUnit tests should not depend on KUNIT=y determine whether the revision contains the guilty commit revision ca48fc16c49388400eddd6c6614593ebf7c7726a crashed and is reachable testing commit 78cb71dd609b4348b1fd5152c46df041c4125fe4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e8b57b1d71a1392601b90c1f450a7c6e324c6cb3eb212ade96a76303a041c113 all runs: OK false negative chance: 0.045 # git bisect bad 78cb71dd609b4348b1fd5152c46df041c4125fe4 Bisecting: 13 revisions left to test after this (roughly 4 steps) [421ce97657a84b81ce2cb915e75037e1a356736a] arm64: dts: ti: k3-j7200: Fix physical address of pin determine whether the revision contains the guilty commit revision b4e5d0c4cf07caef4b596a7afe0b4ad8e15d8283 crashed and is reachable testing commit 421ce97657a84b81ce2cb915e75037e1a356736a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 465b0f3a884caf765fa45130b04a1fb91768d7c8edc30716c655d590f24c16f3 all runs: OK false negative chance: 0.045 # git bisect bad 421ce97657a84b81ce2cb915e75037e1a356736a Bisecting: 6 revisions left to test after this (roughly 3 steps) [ebec507398e11b1c25ce9fb05fb509878233051c] RDMA/irdma: avoid fortify-string warning in irdma_clr_wqes determine whether the revision contains the guilty commit revision b4e5d0c4cf07caef4b596a7afe0b4ad8e15d8283 crashed and is reachable testing commit ebec507398e11b1c25ce9fb05fb509878233051c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d6c321c48fbee597301c5a1884581582e2aa050f1f6a11bce233954dde99ea04 run #0: crashed: kernel BUG in end_buffer_async_write 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 run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: kernel BUG in end_buffer_async_write, types: [BUG] # git bisect good ebec507398e11b1c25ce9fb05fb509878233051c Bisecting: 3 revisions left to test after this (roughly 2 steps) [5d14292dba9554881a137039c048a67ddf321395] ARM: dts: iwg20d-q7-common: Fix backlight pwm specifier determine whether the revision contains the guilty commit revision b4e5d0c4cf07caef4b596a7afe0b4ad8e15d8283 crashed and is reachable testing commit 5d14292dba9554881a137039c048a67ddf321395 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 544752fc58486b91a615898387aa08e2e91717c02160c6035f91a3602eb9cbfc all runs: OK false negative chance: 0.130 # git bisect bad 5d14292dba9554881a137039c048a67ddf321395 Bisecting: 0 revisions left to test after this (roughly 1 step) [766e0b6f4c9649f126e59c06f100b8581d0773b8] RDMA/hns: Fix hns_roce_table_get return value determine whether the revision contains the guilty commit revision ca48fc16c49388400eddd6c6614593ebf7c7726a crashed and is reachable testing commit 766e0b6f4c9649f126e59c06f100b8581d0773b8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d42641126b01fc213ab1011b10ddaa9b45acfb2a060978804b7c1cd217148856 all runs: OK false negative chance: 0.130 # git bisect bad 766e0b6f4c9649f126e59c06f100b8581d0773b8 Bisecting: 0 revisions left to test after this (roughly 0 steps) [b99395ab605fb0570d1e62c9459425ac6fc58d46] IB/hfi1: Fix wrong mmu_node used for user SDMA packet after invalidate determine whether the revision contains the guilty commit revision 50fb32197f60333666dac9ae23aa107d2c9ad8ba crashed and is reachable testing commit b99395ab605fb0570d1e62c9459425ac6fc58d46 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 964a50b705789bb22a695e5b0530f1e1dec3ad380ac757e0e12d235666fe7b86 all runs: OK false negative chance: 0.130 # git bisect bad b99395ab605fb0570d1e62c9459425ac6fc58d46 b99395ab605fb0570d1e62c9459425ac6fc58d46 is the first bad commit commit b99395ab605fb0570d1e62c9459425ac6fc58d46 Author: Brendan Cunningham Date: Fri May 19 12:32:16 2023 -0400 IB/hfi1: Fix wrong mmu_node used for user SDMA packet after invalidate [ Upstream commit c9358de193ecfb360c3ce75f27ce839ca0b0bc8c ] The hfi1 user SDMA pinned-page cache will leave a stale cache entry when the cache-entry's virtual address range is invalidated but that cache entry is in-use by an outstanding SDMA request. Subsequent user SDMA requests with buffers in or spanning the virtual address range of the stale cache entry will result in packets constructed from the wrong memory, the physical pages pointed to by the stale cache entry. To fix this, remove mmu_rb_node cache entries from the mmu_rb_handler cache independent of the cache entry's refcount. Add 'struct kref refcount' to struct mmu_rb_node and manage mmu_rb_node lifetime with kref_get() and kref_put(). mmu_rb_node.refcount makes sdma_mmu_node.refcount redundant. Remove 'atomic_t refcount' from struct sdma_mmu_node and change sdma_mmu_node code to use mmu_rb_node.refcount. Move the mmu_rb_handler destructor call after a wait-for-SDMA-request-completion call so mmu_rb_nodes that need mmu_rb_handler's workqueue to queue themselves up for destruction from an interrupt context may do so. Fixes: f48ad614c100 ("IB/hfi1: Move driver out of staging") Fixes: 00cbce5cbf88 ("IB/hfi1: Fix bugs with non-PAGE_SIZE-end multi-iovec user SDMA requests") Link: https://lore.kernel.org/r/168451393605.3700681.13493776139032178861.stgit@awfm-02.cornelisnetworks.com Reviewed-by: Dean Luick Signed-off-by: Brendan Cunningham Signed-off-by: Dennis Dalessandro Signed-off-by: Jason Gunthorpe Signed-off-by: Sasha Levin drivers/infiniband/hw/hfi1/ipoib_tx.c | 4 +- drivers/infiniband/hw/hfi1/mmu_rb.c | 101 ++++++++++++++--------- drivers/infiniband/hw/hfi1/mmu_rb.h | 3 + drivers/infiniband/hw/hfi1/sdma.c | 23 ++++-- drivers/infiniband/hw/hfi1/sdma.h | 47 +++++++---- drivers/infiniband/hw/hfi1/sdma_txreq.h | 2 + drivers/infiniband/hw/hfi1/user_sdma.c | 137 +++++++++++++------------------- drivers/infiniband/hw/hfi1/user_sdma.h | 1 - drivers/infiniband/hw/hfi1/vnic_sdma.c | 4 +- 9 files changed, 177 insertions(+), 145 deletions(-) accumulated error probability: 0.42 culprit signature: 964a50b705789bb22a695e5b0530f1e1dec3ad380ac757e0e12d235666fe7b86 parent signature: d6c321c48fbee597301c5a1884581582e2aa050f1f6a11bce233954dde99ea04 reproducer is flaky (0.10 repro chance estimate) revisions tested: 21, total time: 5h32m23.106964761s (build: 1h22m59.959157143s, test: 4h1m56.107125801s) first good commit: b99395ab605fb0570d1e62c9459425ac6fc58d46 IB/hfi1: Fix wrong mmu_node used for user SDMA packet after invalidate recipients (to): ["bcunningham@cornelisnetworks.com" "dean.luick@cornelisnetworks.com" "dennis.dalessandro@cornelisnetworks.com" "jgg@nvidia.com" "sashal@kernel.org"] recipients (cc): []