ci2 starts bisection 2024-07-26 08:01:32.896663611 +0000 UTC m=+35144.676620964 bisecting cause commit starting from 1722389b0d863056d78287a120a1d6cadb8d4f7b building syzkaller on 3f86dfedab01e62e34121865cebb1ce1efcfea0d ensuring issue is reproducible on original commit 1722389b0d863056d78287a120a1d6cadb8d4f7b testing commit 1722389b0d863056d78287a120a1d6cadb8d4f7b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ffc05418f949549441fd4bb7dcce4ea9a7d5f2c33022f330590d7049daf8184c all runs: crashed: WARNING in rcu_sync_dtor representative crash: WARNING in rcu_sync_dtor, types: [WARNING] check whether we can drop unnecessary instrumentation disabling configs for [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 1722389b0d863056d78287a120a1d6cadb8d4f7b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e7768da0bb8881ac3731b9b616fe3878797dbc3a9425d5445a1a6187bcf1e775 all runs: crashed: WARNING in rcu_sync_dtor representative crash: WARNING in rcu_sync_dtor, types: [WARNING] the bug reproduces without the instrumentation disabling configs for [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed kconfig minimization: base=3993 full=8128 leaves diff=2115 split chunks (needed=false): <2115> split chunk #0 of len 2115 into 5 parts testing without sub-chunk 1/5 disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 1722389b0d863056d78287a120a1d6cadb8d4f7b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4b1a729e961cdf3eb88ce53c705c6508e60cfb1e120c09e6e38b3cc331cd80a9 all runs: crashed: WARNING in rcu_sync_dtor representative crash: WARNING in rcu_sync_dtor, types: [WARNING] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 1722389b0d863056d78287a120a1d6cadb8d4f7b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 45c20122d148341a73ace7b0fe61541e7146f946c43e88af2e258a427ed9f753 all runs: OK false negative chance: 0.000 testing without sub-chunk 3/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 1722389b0d863056d78287a120a1d6cadb8d4f7b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 17dd294d59e348a15cdaecc68a9f34872d5e3424221d9694e4245b6e85b48567 all runs: crashed: WARNING in rcu_sync_dtor representative crash: WARNING in rcu_sync_dtor, types: [WARNING] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 1722389b0d863056d78287a120a1d6cadb8d4f7b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 679bc0f5d44901b1a0e626cfe0db8b0008f49aec26815599baf83cc5e4410704 all runs: crashed: WARNING in rcu_sync_dtor representative crash: WARNING in rcu_sync_dtor, types: [WARNING] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 1722389b0d863056d78287a120a1d6cadb8d4f7b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 875a995eb89d7e1fd35453b6f9ca5434a05d836ebc0f4d117d8505f9b3dcb3e5 all runs: crashed: WARNING in rcu_sync_dtor representative crash: WARNING in rcu_sync_dtor, types: [WARNING] the chunk can be dropped minimized to 423 configs; suspects: [6LOWPAN ARCH_ENABLE_MEMORY_HOTREMOVE ASUS_WMI CHARGER_BQ24190 CMA COMMON_CLK DAX DLM DRM DRM_BRIDGE DRM_PANEL DRM_PANEL_BRIDGE DRM_PANEL_EDP DRM_PANEL_ORIENTATION_QUIRKS DRM_SIMPLEDRM DRM_TTM DRM_TTM_HELPER DRM_UDL DRM_VGEM DRM_VIRTIO_GPU DRM_VIRTIO_GPU_KMS DRM_VKMS DRM_VMWGFX DRM_VRAM_HELPER DUMMY DVB_AF9013 DVB_AF9033 DVB_AS102 DVB_AS102_FE DVB_B2C2_FLEXCOP DVB_B2C2_FLEXCOP_USB DVB_CORE DVB_DIB3000MB DVB_DIB3000MC DVB_EC100 DVB_GP8PSK_FE DVB_RTL2830 DVB_RTL2832 DVB_RTL2832_SDR DVB_TEST_DRIVERS DVB_TTUSB_BUDGET DVB_TTUSB_DEC DVB_USB DVB_USB_A800 DVB_USB_AF9005 DVB_USB_AF9005_REMOTE DVB_USB_AF9015 DVB_USB_AF9035 DVB_USB_ANYSEE DVB_USB_AU6610 DVB_USB_AZ6007 DVB_USB_AZ6027 DVB_USB_CE6230 DVB_USB_CINERGY_T2 DVB_USB_CXUSB DVB_USB_CXUSB_ANALOG DVB_USB_DIB0700 DVB_USB_DIB3000MC DVB_USB_DIBUSB_MB DVB_USB_DIBUSB_MC DVB_USB_DIGITV DVB_USB_DTT200U DVB_USB_DTV5100 DVB_USB_DVBSKY DVB_USB_DW2102 DVB_USB_EC168 DVB_USB_GL861 DVB_USB_GP8PSK DVB_USB_LME2510 DVB_USB_M920X DVB_USB_MXL111SF DVB_USB_NOVA_T_USB2 DVB_USB_OPERA1 DVB_USB_PCTV452E DVB_USB_RTL28XXU DVB_USB_TECHNISAT_USB2 DVB_USB_TTUSB2 DVB_USB_UMT_010 DVB_USB_V2 DVB_USB_VP702X DVB_USB_VP7045 DVB_USB_ZD1301 DVB_VIDTV DVB_ZL10353 ECRYPT_FS ECRYPT_FS_MESSAGING EDAC EEPROM_93CX6 EFS_FS ENCRYPTED_KEYS EQUALIZER EROFS_FS EROFS_FS_POSIX_ACL EROFS_FS_SECURITY EROFS_FS_XATTR EROFS_FS_ZIP EVM EVM_ADD_XATTRS EVM_ATTR_FSUUID EVM_EXTRA_SMACK_XATTRS EXFAT_FS EXPORTFS_BLOCK_OPS EXT3_FS EXT3_FS_POSIX_ACL EXT3_FS_SECURITY EXTCON EXTCON_INTEL_CHT_WC EXTCON_PTN5150 EXTCON_USBC_TUSB320 F2FS_CHECK_FS F2FS_FAULT_INJECTION F2FS_FS F2FS_FS_COMPRESSION F2FS_FS_LZ4 F2FS_FS_LZ4HC F2FS_FS_LZO F2FS_FS_LZORLE F2FS_FS_POSIX_ACL F2FS_FS_SECURITY F2FS_FS_XATTR F2FS_FS_ZSTD F2FS_STAT_FS FANOTIFY FANOTIFY_ACCESS_PERMISSIONS FB FB_CFB_COPYAREA FB_CFB_FILLRECT FB_CFB_IMAGEBLIT FB_CORE FB_DEFERRED_IO FB_DEVICE FB_IOMEM_FOPS FB_IOMEM_HELPERS FB_NOTIFY FB_SYSMEM_FOPS FB_SYSMEM_HELPERS FB_SYSMEM_HELPERS_DEFERRED FB_SYS_COPYAREA FB_SYS_FILLRECT FB_SYS_IMAGEBLIT FB_TILEBLITTING FB_VESA FB_VGA16 FB_VIRTUAL FDDI FIREWIRE FIREWIRE_NET FIREWIRE_OHCI FIREWIRE_SBP2 FONT_8x16 FONT_8x8 FONT_SUPPORT FRAMEBUFFER_CONSOLE FRAMEBUFFER_CONSOLE_DETECT_PRIMARY FRAMEBUFFER_CONSOLE_ROTATION FS_DAX FS_DAX_PMD FS_ENCRYPTION FS_ENCRYPTION_ALGS FS_STACK FS_VERITY FS_VERITY_BUILTIN_SIGNATURES FTL FUSE_DAX FUSE_FS FW_LOADER_COMPRESS FW_LOADER_PAGED_BUF FW_LOADER_SYSFS FW_LOADER_USER_HELPER FW_LOADER_USER_HELPER_FALLBACK GACT_PROB GARP GENERIC_PHY GET_FREE_REGION GFS2_FS GFS2_FS_LOCKING_DLM GNSS GNSS_USB GOOGLE_COREBOOT_TABLE GOOGLE_FIRMWARE GOOGLE_MEMCONSOLE GOOGLE_MEMCONSOLE_COREBOOT GOOGLE_VPD GPIOLIB GPIOLIB_IRQCHIP GPIO_ACPI GPIO_DLN2 GPIO_LJCA GPIO_VIPERBOARD GREENASIA_FF GREYBUS GREYBUS_BRIDGED_PHY GREYBUS_ES2 GREYBUS_HID GREYBUS_USB GTP GUEST_PERF_EVENTS GVE HAVE_ARCH_NODE_DEV_GROUP HAVE_ARCH_USERFAULTFD_MINOR HAVE_ARCH_USERFAULTFD_WP HAVE_BOOTMEM_INFO_NODE HAVE_CLK_PREPARE HAVE_KVM_CPU_RELAX_INTERCEPT HAVE_KVM_DIRTY_RING HAVE_KVM_DIRTY_RING_ACQ_REL HAVE_KVM_DIRTY_RING_TSO HAVE_KVM_IRQCHIP HAVE_KVM_IRQ_BYPASS HAVE_KVM_IRQ_ROUTING HAVE_KVM_MSI HAVE_KVM_NO_POLL HAVE_KVM_PFNCACHE HAVE_KVM_PM_NOTIFIER HAVE_KVM_READONLY_MEM HAVE_SCHED_AVG_IRQ HDLC HDLC_CISCO HDLC_FR HDLC_PPP HDLC_RAW HDLC_RAW_ETH HDLC_X25 HDMI HFSPLUS_FS HFS_FS HID_ACCUTOUCH HID_ACRUX HID_ACRUX_FF HID_ALPS HID_APPLEIR HID_ASUS HID_AUREAL HID_BATTERY_STRENGTH HID_BETOP_FF HID_BIGBEN_FF HID_CMEDIA HID_CORSAIR HID_COUGAR HID_CP2112 HID_CREATIVE_SB0540 HID_ELAN HID_ELECOM HID_ELO HID_EMS_FF HID_EVISION HID_FT260 HID_GEMBIRD HID_GFRM HID_GLORIOUS HID_GOOGLE_STADIA_FF HID_GREENASIA HID_GT683R HID_HOLTEK HID_ICADE HID_JABRA HID_KEYTOUCH HID_KYE HID_LCPOWER HID_LED HID_LENOVO HID_LETSKETCH HID_LOGITECH_DJ HID_LOGITECH_HIDPP HID_MACALLY HID_MAGICMOUSE HID_MALTRON HID_MAYFLASH HID_MCP2200 HID_MCP2221 HID_MEGAWORLD_FF HID_MULTITOUCH HID_NTI HID_ORTEK HID_PENMOUNT HID_PICOLCD HID_PICOLCD_BACKLIGHT HID_PICOLCD_CIR HID_PICOLCD_FB HID_PICOLCD_LCD HID_PICOLCD_LEDS HID_PLANTRONICS HID_PRIMAX HID_PRODIKEYS HID_PXRC HID_RAZER HID_RETRODE HID_RMI HID_ROCCAT HID_SAITEK HID_SEMITEK HID_SENSOR_ACCEL_3D HID_SENSOR_ALS HID_SENSOR_CUSTOM_INTEL_HINGE HID_SENSOR_CUSTOM_SENSOR HID_SENSOR_DEVICE_ROTATION HID_SENSOR_GYRO_3D HID_SENSOR_HUB HID_SENSOR_HUMIDITY HID_SENSOR_IIO_COMMON HID_SENSOR_IIO_TRIGGER HID_SENSOR_INCLINOMETER_3D HID_SENSOR_MAGNETOMETER_3D HID_SENSOR_PRESS HID_SENSOR_PROX HID_SENSOR_TEMP HID_SIGMAMICRO HID_SPEEDLINK HID_STEELSERIES HID_THINGM HID_TIVO HID_TOPRE HID_TWINHAN HID_U2FZERO HID_UCLOGIC HID_UDRAW_PS3 HID_VIEWSONIC HID_VIVALDI HID_VIVALDI_COMMON HID_VRC2 HID_WACOM HID_WALTOP HID_WIIMOTE HID_XIAOMI HID_XINMO HID_ZYDACRON HMM_MIRROR HOLTEK_FF HOTPLUG_PCI_PCIE HPET_MMAP HPET_MMAP_DEFAULT HPFS_FS I2C_ALGOBIT I2C_CHARDEV I2C_CP2615 I2C_DESIGNWARE_CORE I2C_DESIGNWARE_PLATFORM I2C_DIOLAN_U2C I2C_DLN2 I2C_HID_ACPI I2C_HID_CORE I2C_HID_OF I2C_LJCA I2C_MUX I2C_MUX_REG I2C_ROBOTFUZZ_OSIF I2C_SI4713 I2C_SLAVE I2C_SLAVE_EEPROM I2C_TINY_USB I2C_VIPERBOARD IEEE802154 IEEE802154_6LOWPAN IEEE802154_ATUSB IEEE802154_DRIVERS IEEE802154_HWSIM IEEE802154_NL802154_EXPERIMENTAL IEEE802154_SOCKET IFB IIO IIO_BUFFER IIO_KFIFO_BUF IIO_TRIGGER IIO_TRIGGERED_BUFFER IKCONFIG IKCONFIG_PROC IMA IMA_APPRAISE IMA_APPRAISE_MODSIG IMA_DEFAULT_HASH_SHA256 IMA_LSM_RULES IMA_MEASURE_ASYMMETRIC_KEYS IMA_NG_TEMPLATE IMA_QUEUE_EARLY_BOOT_KEYS IMA_READ_POLICY IMA_WRITE_POLICY INET6_ESPINTCP INET6_ESP_OFFLOAD INET6_IPCOMP INET6_TUNNEL INET6_XFRM_TUNNEL INET_AH INET_DCCP_DIAG INET_DIAG INET_DIAG_DESTROY INET_ESP INET_ESPINTCP INET_ESP_OFFLOAD INET_IPCOMP INET_MPTCP_DIAG INET_RAW_DIAG INET_SCTP_DIAG INET_TCP_DIAG INET_UDP_DIAG INET_XFRM_TUNNEL INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_ADDR_TRANS_CONFIGFS INFINIBAND_IPOIB INFINIBAND_IPOIB_CM INFINIBAND_IPOIB_DEBUG INFINIBAND_ISER INFINIBAND_ON_DEMAND_PAGING INFINIBAND_RTRS INFINIBAND_SRP INFINIBAND_USER_ACCESS INFINIBAND_USER_MAD INFINIBAND_USER_MEM INPUT_ATI_REMOTE2 INPUT_CM109 INPUT_IMS_PCU INPUT_JOYDEV INPUT_KEYSPAN_REMOTE INPUT_LEDS INPUT_MOUSEDEV INPUT_MOUSEDEV_PSAUX INPUT_POWERMATE INPUT_UINPUT INPUT_YEALINK INTEGRITY INTEGRITY_ASYMMETRIC_KEYS INTEGRITY_AUDIT INTEGRITY_SIGNATURE INTEGRITY_TRUSTED_KEYRING INTEL_CHTWC_INT33FE INTEL_IDMA64 INTEL_IOATDMA INTEL_IOMMU_DEFAULT_ON INTEL_IOMMU_SVM INTEL_ISHTP_ECLITE INTEL_ISH_FIRMWARE_DOWNLOADER INTEL_ISH_HID INTEL_SOC_PMIC_CHTWC INTERVAL_TREE_SPAN_ITER IOMMUFD IOMMUFD_DRIVER IOMMUFD_TEST IP6_NF_MATCH_AH IP6_NF_MATCH_EUI64 IP6_NF_MATCH_FRAG IP6_NF_MATCH_HL IP6_NF_MATCH_MH IP6_NF_MATCH_OPTS IP6_NF_MATCH_RPFILTER IP6_NF_MATCH_RT IP6_NF_MATCH_SRH IP6_NF_NAT IP6_NF_RAW IP6_NF_SECURITY IP6_NF_TARGET_HL IP6_NF_TARGET_MASQUERADE IP6_NF_TARGET_NPT IP6_NF_TARGET_SYNPROXY IPV6_FOU IPV6_FOU_TUNNEL IPV6_GRE IPV6_ILA IPV6_MIP6 IPV6_MROUTE IPV6_MROUTE_MULTIPLE_TABLES IPV6_MULTIPLE_TABLES IPV6_OPTIMISTIC_DAD IPV6_PIMSM_V2 IPV6_ROUTER_PREF IPV6_ROUTE_INFO IPV6_RPL_LWTUNNEL IPV6_SEG6_BPF IPV6_SEG6_HMAC IPV6_SEG6_LWTUNNEL IPV6_SIT_6RD IPV6_SUBTREES IPV6_TUNNEL IPV6_VTI IPVLAN IPVLAN_L3S IPVTAP IP_DCCP IP_DCCP_CCID3 IP_DCCP_TFRC_LIB IP_FIB_TRIE_STATS IP_MROUTE_MULTIPLE_TABLES IP_NF_ARPFILTER IP_NF_ARPTABLES IP_NF_ARP_MANGLE IP_NF_MATCH_AH IP_NF_MATCH_ECN IP_NF_MATCH_RPFILTER IP_NF_MATCH_TTL IP_NF_RAW IP_NF_SECURITY IP_NF_TARGET_ECN IP_NF_TARGET_NETMAP IP_NF_TARGET_REDIRECT IP_NF_TARGET_SYNPROXY IP_NF_TARGET_TTL IP_ROUTE_CLASSID IP_SCTP IP_SET IP_SET_BITMAP_IP IP_SET_BITMAP_IPMAC IP_SET_BITMAP_PORT IP_SET_HASH_IP IP_SET_HASH_IPMAC IP_SET_HASH_IPMARK IP_SET_HASH_IPPORT IP_SET_HASH_IPPORTIP IP_SET_HASH_IPPORTNET IP_SET_HASH_MAC IP_SET_HASH_NET IP_SET_HASH_NETIFACE IP_SET_HASH_NETNET IP_SET_HASH_NETPORT IP_SET_HASH_NETPORTNET IP_SET_LIST_SET IP_VS IP_VS_DH IP_VS_FO IP_VS_FTP IP_VS_IPV6 IP_VS_PROTO_TCP IRQ_TIME_ACCOUNTING LAPB LCD_CLASS_DEVICE MAC802154 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_VIPERBOARD MPTCP MTD NETFILTER_ADVANCED NET_ACT_GACT NET_ACT_MIRRED NET_IPGRE_DEMUX NFT_COMPAT NFT_COMPAT_ARP NFT_FWD_NETDEV NF_TABLES NF_TABLES_ARP NF_TABLES_NETDEV RADIO_ADAPTERS RADIO_SI4713 RAS RC_CORE REGULATOR RFKILL SND SOUND STAGING TRANSPARENT_HUGEPAGE TYPEC TYPEC_MUX_PI3USB30532 USB_LJCA USB_ROLES_INTEL_XHCI USB_ROLE_SWITCH VIDEO_DEV VIRTIO_FS WAN ZONE_DEVICE] disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed picked [v6.10 v6.9 v6.8 v6.6 v6.4 v6.2 v6.0 v5.18 v5.15 v5.12 v5.9 v5.6 v5.3 v5.0 v4.19] out of 33 release tags testing release v6.10 testing commit 0c3836482481200ead7b416ca80c68a29cfdaabd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3731aaa378010689c4262d59e12a58cf78f6eb6f35d5981b59e791e952efc88f all runs: crashed: WARNING in rcu_sync_dtor representative crash: WARNING in rcu_sync_dtor, types: [WARNING] testing release v6.9 testing commit a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 87af80f2ce41a278da97af1ba1eb56a3ba4e027514edb60155ed1f04729add3e all runs: crashed: WARNING in rcu_sync_dtor representative crash: WARNING in rcu_sync_dtor, types: [WARNING] testing release v6.8 testing commit e8f897f4afef0031fe618a8e94127a0934896aba gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: feb207da84af60afc7a4f80718ba66e7e5ed7b912ca1433bccf03756fdb67fae all runs: crashed: WARNING in rcu_sync_dtor representative crash: WARNING in rcu_sync_dtor, types: [WARNING] testing release v6.6 testing commit ffc253263a1375a65fa6c9f62a893e9767fbebfa gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bb9b349bdb2678b9277444da507a8185a05911254d5f831789b6d9a272e41e2a all runs: crashed: WARNING in rcu_sync_dtor representative crash: WARNING in rcu_sync_dtor, types: [WARNING] testing release v6.4 testing commit 6995e2de6891c724bfeb2db33d7b87775f913ad1 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c67f3ebe06d9c83b2e1c20d70117e7edfd64f4184d8f0750803cfb51b5ff006a all runs: OK false negative chance: 0.000 # git bisect start ffc253263a1375a65fa6c9f62a893e9767fbebfa 6995e2de6891c724bfeb2db33d7b87775f913ad1 Bisecting: 14974 revisions left to test after this (roughly 14 steps) [692f5510159c79bfa312a4e27a15e266232bfb4c] Merge tag 'asoc-v6.6' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus testing commit 692f5510159c79bfa312a4e27a15e266232bfb4c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f56733564f79f43d8699a1862a0b0c5dc65248221ebebdaf404a27d5f42943b8 all runs: boot failed: WARNING in apply_returns unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0 # git bisect skip 692f5510159c79bfa312a4e27a15e266232bfb4c Bisecting: 14980 revisions left to test after this (roughly 14 steps) [d011151616e73de20c139580b73fa4c7042bd861] Merge branch 'kvm-x86-mmu-6.6' into HEAD testing commit d011151616e73de20c139580b73fa4c7042bd861 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 834a486a4beb59fecf04131eb32fa2fa75f53c4ec9d2a719b99a7f68fad0d3c8 all runs: crashed: WARNING in rcu_sync_dtor representative crash: WARNING in rcu_sync_dtor, types: [WARNING] # git bisect bad d011151616e73de20c139580b73fa4c7042bd861 Bisecting: 7672 revisions left to test after this (roughly 13 steps) [b775d6c5859affe00527cbe74263de05cfe6b9f9] Merge tag 'mips_6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux testing commit b775d6c5859affe00527cbe74263de05cfe6b9f9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bde1a2f51184f9bebb27356208a69e42953a3225c919bb33fc308155267b97e0 all runs: OK false negative chance: 0.000 # git bisect good b775d6c5859affe00527cbe74263de05cfe6b9f9 Bisecting: 3813 revisions left to test after this (roughly 12 steps) [e8069f5a8e3bdb5fdeeff895780529388592ee7a] Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm testing commit e8069f5a8e3bdb5fdeeff895780529388592ee7a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 63acfcaba1ed8972320665601df8e05acaf35679c591543c3dda4f71424d9349 all runs: OK false negative chance: 0.000 # git bisect good e8069f5a8e3bdb5fdeeff895780529388592ee7a Bisecting: 1888 revisions left to test after this (roughly 11 steps) [3c05547a5fab4ca2777afcb61a69ce68f5ef8a6a] Merge tag 'sound-6.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound testing commit 3c05547a5fab4ca2777afcb61a69ce68f5ef8a6a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: aaaefef36d4b2f37bc1230ea2be4b694474efaeff8e802ceac906a3fd6853548 all runs: crashed: WARNING in rcu_sync_dtor representative crash: WARNING in rcu_sync_dtor, types: [WARNING] # git bisect bad 3c05547a5fab4ca2777afcb61a69ce68f5ef8a6a Bisecting: 961 revisions left to test after this (roughly 10 steps) [05f933d5f7318b03ff2028c1704dc867ac16f2c7] i2c: nomadik: Remove a useless call in the remove function testing commit 05f933d5f7318b03ff2028c1704dc867ac16f2c7 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 81c3f70ad5dea857d00e5ce5c575516bee44c7b8d5b94e6facf7845c00614b61 all runs: crashed: WARNING in rcu_sync_dtor representative crash: WARNING in rcu_sync_dtor, types: [WARNING] # git bisect bad 05f933d5f7318b03ff2028c1704dc867ac16f2c7 Bisecting: 376 revisions left to test after this (roughly 9 steps) [15ac468614e5e4fee82e1eb32568f427b0e51adc] Merge tag 'media/v6.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media testing commit 15ac468614e5e4fee82e1eb32568f427b0e51adc gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4f9d5961a1d004b1b215df43d3371933eec37da1005527292b3258ffe4fcdc5c run #0: crashed: lost connection to 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: lost connection to 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 15ac468614e5e4fee82e1eb32568f427b0e51adc Bisecting: 376 revisions left to test after this (roughly 9 steps) [6311a0d0220f18c436391b75a5c217f9d27b9b49] media: staging: max96712: Add support for 3-lane C-PHY testing commit 6311a0d0220f18c436391b75a5c217f9d27b9b49 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3909ebbab782c07124f25651679debbc655593cba189a7a9f98f109bcae10f81 run #0: crashed: lost connection to 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: lost connection to 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 6311a0d0220f18c436391b75a5c217f9d27b9b49 Bisecting: 376 revisions left to test after this (roughly 9 steps) [c756cc1621efa911bc54ae2aa3651564fa94e0da] phy: cadence-torrent: Prepare driver for multilink DP support testing commit c756cc1621efa911bc54ae2aa3651564fa94e0da gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c1acfac2f69f8cf353d5a6063567c1850ca940eada96a3a9ae63dd43a4987ac8 all runs: OK false negative chance: 0.000 # git bisect good c756cc1621efa911bc54ae2aa3651564fa94e0da Bisecting: 366 revisions left to test after this (roughly 9 steps) [58721bd46c9aaa2d890b2d61cbb8740745455aa9] gfs2: Replace deprecated kmap_atomic with kmap_local_page testing commit 58721bd46c9aaa2d890b2d61cbb8740745455aa9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9107490e5444bdfb4266d2fd7e9738872c926611063e561b8457213e27a884f5 run #0: crashed: lost connection to 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: lost connection to 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 58721bd46c9aaa2d890b2d61cbb8740745455aa9 Bisecting: 366 revisions left to test after this (roughly 9 steps) [eec8787bfb5558999ac97ac3363acc7fc8c4fdf8] media: atomisp: Add ia_css_frame_pad_width() helper function testing commit eec8787bfb5558999ac97ac3363acc7fc8c4fdf8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 96eca468603e2dab25960ca6f3ebcddb073f100fc29b27c5e321635322f27295 all runs: OK false negative chance: 0.000 # git bisect good eec8787bfb5558999ac97ac3363acc7fc8c4fdf8 Bisecting: 366 revisions left to test after this (roughly 9 steps) [5442c33f218b1aabbe699db978e407317a231d10] dt-bindings: pwm: Add R-Car V3U device tree bindings testing commit 5442c33f218b1aabbe699db978e407317a231d10 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f6843cc1b8549e2db7f2a3b5b20822c571dd2087967a2e3dfe9bc3e8958bf0ea all runs: OK false negative chance: 0.000 # git bisect good 5442c33f218b1aabbe699db978e407317a231d10 Bisecting: 360 revisions left to test after this (roughly 9 steps) [fc1ec000b60bdc985e36459c940eedbbdc640057] dt-bindings: phy: qcom,qusb2: Document IPQ9574 compatible testing commit fc1ec000b60bdc985e36459c940eedbbdc640057 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3da956e60f7106e226ea38b86b6f0a4a3f853a44473e650ad9a67ca84798d6d9 all runs: OK false negative chance: 0.000 # git bisect good fc1ec000b60bdc985e36459c940eedbbdc640057 Bisecting: 350 revisions left to test after this (roughly 9 steps) [f7c487366b3a82ced30923e591aaab0cdf1e4199] media: atomisp: csi2-bridge: Add support for setting "clock-" and "link-frequencies" props testing commit f7c487366b3a82ced30923e591aaab0cdf1e4199 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b6852a622824771bb1b763324d463bd60f3bd9ebab26aafd281f6d6767b38e51 all runs: OK false negative chance: 0.000 # git bisect good f7c487366b3a82ced30923e591aaab0cdf1e4199 Bisecting: 350 revisions left to test after this (roughly 9 steps) [6cf2cc304fd9c37ea1a09b5c10279074e940f5f1] watchdog: ziirave_wdt: Switch i2c driver back to use .probe() testing commit 6cf2cc304fd9c37ea1a09b5c10279074e940f5f1 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1f42ed63d68f7a5a7667bce60d20f2d5738f6f9dab57cac0d35e35f4f5b4624c all runs: OK false negative chance: 0.000 # git bisect good 6cf2cc304fd9c37ea1a09b5c10279074e940f5f1 Bisecting: 346 revisions left to test after this (roughly 9 steps) [39ce342c3a4b763d774c531323d6573af389f332] firewire: core: implement variations to send request and wait for response with time stamp testing commit 39ce342c3a4b763d774c531323d6573af389f332 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 642daa55a920b03f05243953dbe888404b373057213d9cfde98820a529b37529 all runs: OK false negative chance: 0.000 # git bisect good 39ce342c3a4b763d774c531323d6573af389f332 Bisecting: 346 revisions left to test after this (roughly 9 steps) [cea44032bc799b088bce1ea73c08269bb59b47d0] gfs2: retry interrupted internal reads testing commit cea44032bc799b088bce1ea73c08269bb59b47d0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4734deef3bddf9febf63af1944c2094ea0c8500d96f715e262924bdac6f36dd5 all runs: OK false negative chance: 0.000 # git bisect good cea44032bc799b088bce1ea73c08269bb59b47d0 Bisecting: 346 revisions left to test after this (roughly 9 steps) [94591894df81ce443b0696440b9198fda6615c45] pds_vdpa: virtio bar setup for vdpa testing commit 94591894df81ce443b0696440b9198fda6615c45 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d1f446f5590f8e9b9951f62e8ee34487b6b210dae3095465f6f38b067acdd1b3 all runs: OK false negative chance: 0.000 # git bisect good 94591894df81ce443b0696440b9198fda6615c45 Bisecting: 346 revisions left to test after this (roughly 8 steps) [28e113f89f33e0f1566045d2adc017e16a9bffb4] parisc: Raise minimal GCC version to 12.0.0 testing commit 28e113f89f33e0f1566045d2adc017e16a9bffb4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bc01dc9b745a8592c80e309f3192960fc9ded4bed72521baacf696ad1c6d3f30 all runs: OK false negative chance: 0.000 # git bisect good 28e113f89f33e0f1566045d2adc017e16a9bffb4 Bisecting: 346 revisions left to test after this (roughly 8 steps) [e82e47584847129a20b8c9f4a1dcde09374fb0e0] sh: dma: Fix DMA channel offset calculation testing commit e82e47584847129a20b8c9f4a1dcde09374fb0e0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b3e59114b1c47f004da3504451ba048b5f3d943024fbf49a2d9b254f216302a9 all runs: OK false negative chance: 0.000 # git bisect good e82e47584847129a20b8c9f4a1dcde09374fb0e0 Bisecting: 339 revisions left to test after this (roughly 8 steps) [326534e837c731496bdf0e02a8a61e987eb3bed0] wireguard: timers: move to using timer_delete_sync testing commit 326534e837c731496bdf0e02a8a61e987eb3bed0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 167b84fbfe6e27e179e97756fb2b30ec9efa6b06da0ff7f7a53aedee9c43f6ea all runs: OK false negative chance: 0.000 # git bisect good 326534e837c731496bdf0e02a8a61e987eb3bed0 Bisecting: 322 revisions left to test after this (roughly 8 steps) [2784d74bcc811e9d743398da38552e6f9c73e96b] Merge tag 'trace-tools-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace testing commit 2784d74bcc811e9d743398da38552e6f9c73e96b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fa48bacba01e64acd2438242e2ee59bad772fd1e1cdf51bac67cc1df85a28cb3 all runs: OK false negative chance: 0.000 # git bisect good 2784d74bcc811e9d743398da38552e6f9c73e96b Bisecting: 138 revisions left to test after this (roughly 7 steps) [73a3fcdaa73200e38e38f7e8a32c9b901c5b95b5] Merge tag 'f2fs-for-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs testing commit 73a3fcdaa73200e38e38f7e8a32c9b901c5b95b5 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: df07e76730931f42e739388ac0627dd86af17e7094b2d57e74fbb897eafc23bd all runs: crashed: WARNING in rcu_sync_dtor representative crash: WARNING in rcu_sync_dtor, types: [WARNING] # git bisect bad 73a3fcdaa73200e38e38f7e8a32c9b901c5b95b5 Bisecting: 91 revisions left to test after this (roughly 7 steps) [fe1de55167963a1c0ebe1579e37a8a41495f0a81] Merge tag 'soundwire-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire testing commit fe1de55167963a1c0ebe1579e37a8a41495f0a81 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1b84e9773359d7df927946afbe96d9569e74ee18639a6e1dfe6ae74670b37291 all runs: OK false negative chance: 0.000 # git bisect good fe1de55167963a1c0ebe1579e37a8a41495f0a81 Bisecting: 45 revisions left to test after this (roughly 6 steps) [a6ec83786ab9f13f25fb18166dee908845713a95] f2fs: fix to do sanity check on direct node in truncate_dnode() testing commit a6ec83786ab9f13f25fb18166dee908845713a95 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1fc8e9fc7813e963bd20ab999889afc36e629593ec47ada9f64e93b03bac0434 all runs: crashed: WARNING in rcu_sync_dtor representative crash: WARNING in rcu_sync_dtor, types: [WARNING] # git bisect bad a6ec83786ab9f13f25fb18166dee908845713a95 Bisecting: 22 revisions left to test after this (roughly 5 steps) [5079e1c0c879311668b77075de3e701869804adf] f2fs: avoid dead loop in f2fs_issue_checkpoint() testing commit 5079e1c0c879311668b77075de3e701869804adf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 08723f7ffdfc27d51323c9f6cd5d43fba9b70cff7e09475b3e46abb9eaf942f9 all runs: crashed: WARNING in rcu_sync_dtor representative crash: WARNING in rcu_sync_dtor, types: [WARNING] # git bisect bad 5079e1c0c879311668b77075de3e701869804adf Bisecting: 11 revisions left to test after this (roughly 4 steps) [478d7100f44b7d250272fb86d70c909045171c9e] f2fs: renew value of F2FS_MOUNT_* testing commit 478d7100f44b7d250272fb86d70c909045171c9e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 13aaab77c63dfea609a02b276051edf10994dd6780e2aa9bdeb3ee8f15ad68f1 all runs: crashed: WARNING in rcu_sync_dtor representative crash: WARNING in rcu_sync_dtor, types: [WARNING] # git bisect bad 478d7100f44b7d250272fb86d70c909045171c9e Bisecting: 5 revisions left to test after this (roughly 3 steps) [08c3eab525efb31406494282552a23f33a8a921a] f2fs: remove some dead code testing commit 08c3eab525efb31406494282552a23f33a8a921a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ad1f2d0aaf7387d0de14356826a2b56250f0514b4926dbda042b9a5df65cb1e6 all runs: crashed: WARNING in rcu_sync_dtor representative crash: WARNING in rcu_sync_dtor, types: [WARNING] # git bisect bad 08c3eab525efb31406494282552a23f33a8a921a Bisecting: 1 revision left to test after this (roughly 1 step) [7cd2e5f75b86a1befa99834f3ed1d735eeff69e6] f2fs: do not allow to defragment files have FI_COMPRESS_RELEASED testing commit 7cd2e5f75b86a1befa99834f3ed1d735eeff69e6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6364db2a663534ab63ba72b415323bffaa35599bed52c35524beb1b20b795885 all runs: crashed: WARNING in rcu_sync_dtor representative crash: WARNING in rcu_sync_dtor, types: [WARNING] # git bisect bad 7cd2e5f75b86a1befa99834f3ed1d735eeff69e6 Bisecting: 0 revisions left to test after this (roughly 1 step) [888ca6edac81e919fa7accb3b4f1d363e3c1e5f8] f2fs: add sanity check for proc_mkdir testing commit 888ca6edac81e919fa7accb3b4f1d363e3c1e5f8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4a6f7f8e05a58cae94df2a182d07cc1e936ef963f3cf3986768b53d5d3ef9b1d all runs: crashed: WARNING in rcu_sync_dtor representative crash: WARNING in rcu_sync_dtor, types: [WARNING] # git bisect bad 888ca6edac81e919fa7accb3b4f1d363e3c1e5f8 Bisecting: 0 revisions left to test after this (roughly 0 steps) [b62e71be2110d8b52bf5faf3c3ed7ca1a0c113a5] f2fs: support errors=remount-ro|continue|panic mountoption testing commit b62e71be2110d8b52bf5faf3c3ed7ca1a0c113a5 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7404b44a6664a936788314eae215a72139050ca5caa93ae46b91266bd320776f all runs: crashed: WARNING in rcu_sync_dtor representative crash: WARNING in rcu_sync_dtor, types: [WARNING] # git bisect bad b62e71be2110d8b52bf5faf3c3ed7ca1a0c113a5 b62e71be2110d8b52bf5faf3c3ed7ca1a0c113a5 is the first bad commit commit b62e71be2110d8b52bf5faf3c3ed7ca1a0c113a5 Author: Chao Yu Date: Sun Apr 23 23:49:15 2023 +0800 f2fs: support errors=remount-ro|continue|panic mountoption This patch supports errors=remount-ro|continue|panic mount option for f2fs. f2fs behaves as below in three different modes: mode continue remount-ro panic access ops normal noraml N/A syscall errors -EIO -EROFS N/A mount option rw ro N/A pending dir write keep keep N/A pending non-dir write drop keep N/A pending node write drop keep N/A pending meta write keep keep N/A By default it uses "continue" mode. [Yangtao helps to clean up function's name] Signed-off-by: Yangtao Li Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim Documentation/filesystems/f2fs.rst | 16 +++++ fs/f2fs/checkpoint.c | 7 +- fs/f2fs/data.c | 4 ++ fs/f2fs/f2fs.h | 20 +++++- fs/f2fs/file.c | 5 -- fs/f2fs/gc.c | 2 +- fs/f2fs/node.c | 3 + fs/f2fs/super.c | 134 ++++++++++++++++++++++++++++++++++--- 8 files changed, 167 insertions(+), 24 deletions(-) accumulated error probability: 0.00 parent commit ac9a78681b921877518763ba0e89202254349d1b wasn't tested testing commit ac9a78681b921877518763ba0e89202254349d1b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 32f29df6825cc00b9d43392acd4940b7fee47118e472b914adf962311584101f culprit signature: 7404b44a6664a936788314eae215a72139050ca5caa93ae46b91266bd320776f parent signature: 32f29df6825cc00b9d43392acd4940b7fee47118e472b914adf962311584101f revisions tested: 43, total time: 7h20m58.073470942s (build: 2h32m5.289286577s, test: 4h32m30.992240815s) first bad commit: b62e71be2110d8b52bf5faf3c3ed7ca1a0c113a5 f2fs: support errors=remount-ro|continue|panic mountoption recipients (to): ["chao@kernel.org" "frank.li@vivo.com" "jaegeuk@kernel.org"] recipients (cc): [] crash: WARNING in rcu_sync_dtor ------------[ cut here ]------------ WARNING: CPU: 0 PID: 181 at kernel/rcu/sync.c:193 rcu_sync_dtor+0x5b/0x70 kernel/rcu/sync.c:193 Modules linked in: CPU: 0 PID: 181 Comm: kworker/0:2 Not tainted 6.4.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Workqueue: events destroy_super_work RIP: 0010:rcu_sync_dtor+0x5b/0x70 kernel/rcu/sync.c:193 Code: 4c 89 f7 e8 b7 8a 2d 01 eb 0c 4c 89 f7 e8 ad 8a 2d 01 85 ed 74 0a e8 74 58 00 00 83 3b 00 75 15 5b 41 5e 5d c3 cc cc cc cc 90 <0f> 0b 90 eb b1 90 0f 0b 90 eb b2 90 0f 0b 90 eb e5 0f 1f 40 00 90 RSP: 0018:ffffc90000f6be20 EFLAGS: 00010202 RAX: 0000000000000001 RBX: ffff888102a83380 RCX: 000000009d07f6d6 RDX: 404d6feb83394f4d RSI: ffffffff82e1340e RDI: ffff888102a83380 RBP: ffff88810867dcd0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff81321c20 R12: ffff888237c32405 R13: ffff88810867dcc0 R14: ffff888237c32400 R15: ffff888237c2cd40 FS: 0000000000000000(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fec5360000a CR3: 0000000101716000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: percpu_free_rwsem+0x14/0x30 kernel/locking/percpu-rwsem.c:42 destroy_super_work+0x14/0x40 fs/super.c:163 process_one_work+0x269/0x500 kernel/workqueue.c:2405 worker_thread+0x244/0x3f0 kernel/workqueue.c:2552 kthread+0xf4/0x110 kernel/kthread.c:379 ret_from_fork+0x29/0x50 arch/x86/entry/entry_64.S:308