ci2 starts bisection 2023-09-25 11:51:26.805719564 +0000 UTC m=+1049618.834893667 bisecting fixing commit since 8a7f2a5c5aa1648edb4f2029c6ec33870afb7a95 building syzkaller on fbf0499acc828df26995835e51d83c3a0117e716 ensuring issue is reproducible on original commit 8a7f2a5c5aa1648edb4f2029c6ec33870afb7a95 testing commit 8a7f2a5c5aa1648edb4f2029c6ec33870afb7a95 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0d0361806a289685f359d0950642d59f765bd0369a4e583e48f20a6d28e5ae78 all runs: crashed: possible deadlock in blocking_notifier_call_chain representative crash: possible deadlock in blocking_notifier_call_chain, types: [LOCKDEP] check whether we can drop unnecessary instrumentation disabling configs for [HANG LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed testing commit 8a7f2a5c5aa1648edb4f2029c6ec33870afb7a95 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 174bb3599b663050b4fd9843a7cdd3d19c5d7ef098ca16c8409cd2a92cf3e065 all runs: crashed: possible deadlock in blocking_notifier_call_chain representative crash: possible deadlock in blocking_notifier_call_chain, types: [LOCKDEP] the bug reproduces without the instrumentation disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed kconfig minimization: base=3703 full=7270 leaves diff=1979 split chunks (needed=false): <1979> split chunk #0 of len 1979 into 5 parts testing without sub-chunk 1/5 disabling configs for [LEAK UBSAN BUG KASAN ATOMIC_SLEEP HANG], they are not needed testing commit 8a7f2a5c5aa1648edb4f2029c6ec33870afb7a95 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 66257ec387e9a1fc8875ac8df9a1372497c809cc5224b9f2d9c432e533a66742 all runs: crashed: possible deadlock in blocking_notifier_call_chain representative crash: possible deadlock in blocking_notifier_call_chain, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [LEAK UBSAN BUG KASAN ATOMIC_SLEEP HANG], they are not needed testing commit 8a7f2a5c5aa1648edb4f2029c6ec33870afb7a95 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a23e342be2553e5fe2cc48bda8dcb9d68f4a2b939a923c7db8ff28edeea351d0 all runs: OK false negative chance: 0.000 testing without sub-chunk 3/5 disabling configs for [HANG LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed testing commit 8a7f2a5c5aa1648edb4f2029c6ec33870afb7a95 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 814cf576049859234ad5c395dd8d3bd6c716b117bb72ce18fa6e307547b84ba9 all runs: crashed: possible deadlock in blocking_notifier_call_chain representative crash: possible deadlock in blocking_notifier_call_chain, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [LEAK UBSAN BUG KASAN ATOMIC_SLEEP HANG], they are not needed testing commit 8a7f2a5c5aa1648edb4f2029c6ec33870afb7a95 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 97d5194fa7642421a605f7e802ade0f666a9e9b1e8e5c5023ff39d544451a0ca all runs: crashed: possible deadlock in blocking_notifier_call_chain representative crash: possible deadlock in blocking_notifier_call_chain, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [BUG KASAN ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 8a7f2a5c5aa1648edb4f2029c6ec33870afb7a95 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3c6c6d487fb717cacd90127e77e9bc8ea1d86a1ffabdfb483869c90762235666 all runs: crashed: possible deadlock in blocking_notifier_call_chain representative crash: possible deadlock in blocking_notifier_call_chain, types: [LOCKDEP] the chunk can be dropped minimized to 396 configs; suspects: [6LOWPAN ACPI_WMI ARCH_ENABLE_MEMORY_HOTREMOVE ASUS_WMI CMA DAX_DRIVER DLM DRM DRM_BRIDGE DRM_FBDEV_EMULATION DRM_MIPI_DSI DRM_PANEL DRM_PANEL_BRIDGE DRM_PANEL_ORIENTATION_QUIRKS DRM_SIMPLEDRM DRM_TTM DRM_TTM_HELPER DRM_UDL DRM_VGEM DRM_VIRTIO_GPU DRM_VKMS DRM_VMWGFX DRM_VMWGFX_FBCON 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_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 EXFAT_FS EXPORTFS_BLOCK_OPS EXT3_FS EXT3_FS_POSIX_ACL EXT3_FS_SECURITY 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_BOOT_VESA_SUPPORT FB_CFB_COPYAREA FB_CFB_FILLRECT FB_CFB_IMAGEBLIT FB_CMDLINE FB_DEFERRED_IO FB_NOTIFY FB_SYS_COPYAREA FB_SYS_FILLRECT FB_SYS_FOPS 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_VERITY FS_VERITY_BUILTIN_SIGNATURES FTL FUSE_DAX FUSE_FS FW_LOADER_COMPRESS FW_LOADER_PAGED_BUF FW_LOADER_USER_HELPER FW_LOADER_USER_HELPER_FALLBACK GACT_PROB GARP GENERIC_PHY GFS2_FS GFS2_FS_LOCKING_DLM GOOGLE_COREBOOT_TABLE GOOGLE_FIRMWARE GOOGLE_MEMCONSOLE GOOGLE_MEMCONSOLE_COREBOOT GOOGLE_VPD GPIOLIB GPIOLIB_IRQCHIP GPIO_ACPI GPIO_DLN2 GPIO_VIPERBOARD GREENASIA_FF GREYBUS GREYBUS_BRIDGED_PHY GREYBUS_ES2 GREYBUS_HID GREYBUS_USB GTP GVE HAVE_ARCH_USERFAULTFD_MINOR HAVE_ARCH_USERFAULTFD_WP HAVE_BOOTMEM_INFO_NODE HAVE_KVM_CPU_RELAX_INTERCEPT HAVE_KVM_EVENTFD HAVE_KVM_IRQCHIP HAVE_KVM_IRQFD HAVE_KVM_IRQ_BYPASS HAVE_KVM_IRQ_ROUTING HAVE_KVM_MSI HAVE_KVM_NO_POLL HAVE_KVM_PM_NOTIFIER 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_CMEDIA HID_CORSAIR HID_CP2112 HID_ELECOM HID_ELO HID_EMS_FF HID_GEMBIRD HID_GFRM HID_GREENASIA HID_GT683R HID_HOLTEK HID_ICADE HID_KEYTOUCH HID_KYE HID_LCPOWER HID_LED HID_LENOVO HID_LOGITECH_DJ HID_LOGITECH_HIDPP HID_MAGICMOUSE HID_MAYFLASH 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_RETRODE HID_RMI HID_ROCCAT HID_SAITEK HID_SENSOR_ACCEL_3D HID_SENSOR_ALS 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_SPEEDLINK HID_STEELSERIES HID_THINGM HID_TIVO HID_TWINHAN HID_UCLOGIC HID_UDRAW_PS3 HID_WACOM HID_WALTOP HID_WIIMOTE HID_XINMO HID_ZYDACRON HMM_MIRROR HOLTEK_FF HOTPLUG_PCI_PCIE HPET_MMAP HPET_MMAP_DEFAULT HPFS_FS I2C_ALGOBIT I2C_CHARDEV I2C_DIOLAN_U2C I2C_DLN2 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 INTERVAL_TREE 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_CLUSTERIP 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_LBLC IP_VS_LBLCR IP_VS_LC IP_VS_MH IP_VS_NFCT IP_VS_NQ IP_VS_OVF IP_VS_PE_SIP IP_VS_PROTO_AH IP_VS_PROTO_AH_ESP IP_VS_PROTO_ESP IP_VS_PROTO_SCTP IP_VS_PROTO_TCP IP_VS_PROTO_UDP IP_VS_RR IP_VS_SED IP_VS_SH IP_VS_TWOS IP_VS_WLC IP_VS_WRR IRQ_BYPASS_MANAGER IRQ_POLL IRQ_TIME_ACCOUNTING IR_IGORPLUGUSB IR_IGUANA IR_IMON IR_MCEUSB IR_REDRAT3 IR_STREAMZAP IR_TTUSBIR ISDN ISDN_CAPI_MIDDLEWARE JFFS2_CMODE_PRIORITY JFFS2_COMPRESSION_OPTIONS JFFS2_FS JFFS2_FS_POSIX_ACL JFFS2_FS_XATTR 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_FWD_NETDEV NF_TABLES NF_TABLES_NETDEV RADIO_ADAPTERS RADIO_SI4713 RAS RC_CORE RC_DEVICES RFKILL SND SOUND STAGING TRANSPARENT_HUGEPAGE VIDEO_DEV VIDEO_V4L2 VIRTIO_FS WAN ZONE_DEVICE] disabling configs for [HANG LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed determining the merge base between 8a7f2a5c5aa1648edb4f2029c6ec33870afb7a95 and 6465e260f48790807eef06b583b38ca9789b6072 8bb7eca972ad531c9b149c0a51ab43a417385813/Linux 5.15 is a merge base, check if it has the bug testing commit 8bb7eca972ad531c9b149c0a51ab43a417385813 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4c3872fa90698b7902717a6167368241c5cf96ff3aafc3af9a98a1ee4d031f70 all runs: crashed: possible deadlock in blocking_notifier_call_chain representative crash: possible deadlock in blocking_notifier_call_chain, types: [LOCKDEP] testing current HEAD 6465e260f48790807eef06b583b38ca9789b6072 testing commit 6465e260f48790807eef06b583b38ca9789b6072 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2a6e2b61cecf163cdeff10a567e9ab1424cdea8554f88b1cf77bd309301820a3 all runs: OK false negative chance: 0.000 # git bisect start 6465e260f48790807eef06b583b38ca9789b6072 8bb7eca972ad531c9b149c0a51ab43a417385813 Bisecting: 85380 revisions left to test after this (roughly 16 steps) [513389809e138ae903b6ef43c1d5d2ffaf4dca17] Merge tag 'for-6.1/block-2022-10-03' of git://git.kernel.dk/linux determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 513389809e138ae903b6ef43c1d5d2ffaf4dca17 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 64b8f523b2b99afe773129a33f4a139ab255f65ce6d41f235450c88ed28a2098 all runs: OK false negative chance: 0.000 # git bisect bad 513389809e138ae903b6ef43c1d5d2ffaf4dca17 Bisecting: 42632 revisions left to test after this (roughly 15 steps) [95124339875c8d9c092eb2fa3993e4751e1be48d] Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 95124339875c8d9c092eb2fa3993e4751e1be48d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a31e38f7a88ed24258ea955bff2c303c5df0da51cb897ca2f2339397f7f7db7c all runs: OK false negative chance: 0.000 # git bisect bad 95124339875c8d9c092eb2fa3993e4751e1be48d Bisecting: 21442 revisions left to test after this (roughly 14 steps) [1151e3cd5a7375ebc839ad3e6c51d87700fe019e] Merge tag 'mmc-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 1151e3cd5a7375ebc839ad3e6c51d87700fe019e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d89b4a1a9ad54af19acf7e0feddf09adb5bca8ed741a9f502176480e8b5a9b58 all runs: OK false negative chance: 0.000 # git bisect bad 1151e3cd5a7375ebc839ad3e6c51d87700fe019e Bisecting: 10677 revisions left to test after this (roughly 13 steps) [7f9f879243d6cf5d2d60d12065e93189cc343387] Merge remote-tracking branch 'torvalds/master' into perf/core determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 7f9f879243d6cf5d2d60d12065e93189cc343387 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ea7c64410ddcf62d6fcce294701c225cb6da3860d8fa5ef7be7ba99cf6e00afc all runs: OK false negative chance: 0.000 # git bisect bad 7f9f879243d6cf5d2d60d12065e93189cc343387 Bisecting: 5615 revisions left to test after this (roughly 12 steps) [464fddbba1dfbc219f1e9145127a482d2159dee5] Merge tag 'pnp-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 464fddbba1dfbc219f1e9145127a482d2159dee5 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f4026b120c2dc1d1e19c0b119794bc1e605ef9be75535e265fb04a58029ee896 all runs: OK false negative chance: 0.000 # git bisect bad 464fddbba1dfbc219f1e9145127a482d2159dee5 Bisecting: 2800 revisions left to test after this (roughly 11 steps) [84882cf72cd774cf16fd338bdbf00f69ac9f9194] Revert "net: avoid double accounting for pure zerocopy skbs" determine whether the revision contains the guilty commit checking the merge base 411a44c24a561e449b592ff631b7ae321f1eb559 no existing result, test the revision testing commit 411a44c24a561e449b592ff631b7ae321f1eb559 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: de93ce8753021e944c3d0310dbf1be50e668441bbcd05fd2be2260af7deddb6d all runs: crashed: possible deadlock in blocking_notifier_call_chain representative crash: possible deadlock in blocking_notifier_call_chain, types: [LOCKDEP] testing commit 84882cf72cd774cf16fd338bdbf00f69ac9f9194 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bece37c16715ee195de8213244fc90159564347baa50952eadd5887f30024751 all runs: crashed: possible deadlock in blocking_notifier_call_chain representative crash: possible deadlock in blocking_notifier_call_chain, types: [LOCKDEP] # git bisect good 84882cf72cd774cf16fd338bdbf00f69ac9f9194 Bisecting: 1439 revisions left to test after this (roughly 11 steps) [6f2b76a4a384e05ac8d3349831f29dff5de1e1e2] Merge tag 'Smack-for-5.16' of https://github.com/cschaufler/smack-next determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 6f2b76a4a384e05ac8d3349831f29dff5de1e1e2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b6004932c58ecbb5b95830180c4328092d912869f16b568897be7781906d4426 all runs: OK false negative chance: 0.000 # git bisect bad 6f2b76a4a384e05ac8d3349831f29dff5de1e1e2 Bisecting: 635 revisions left to test after this (roughly 9 steps) [037c50bfbeb33b4c74e120eef5b8b99d8f025418] Merge tag 'for-5.16-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux determine whether the revision contains the guilty commit revision 411a44c24a561e449b592ff631b7ae321f1eb559 crashed and is reachable testing commit 037c50bfbeb33b4c74e120eef5b8b99d8f025418 gcc compiler: gcc (GCC) 10.2.1 20210217 failed building 037c50bfbeb33b4c74e120eef5b8b99d8f025418: scripts/extract-cert.c:46:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] scripts/extract-cert.c:59:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] scripts/sign-file.c:89:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] scripts/sign-file.c:102:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] ./include/linux/page-flags.h:806:29: error: macro "PAGEFLAG_FALSE" requires 2 arguments, but only 1 given ./include/linux/page-flags.h:807:32: error: macro "TESTSCFLAG_FALSE" requires 2 arguments, but only 1 given ./include/linux/page-flags.h:806:1: error: unknown type name 'PAGEFLAG_FALSE' ./include/linux/page-flags.h:807:18: error: expected ';' before 'static' # git bisect skip 037c50bfbeb33b4c74e120eef5b8b99d8f025418 Bisecting: 635 revisions left to test after this (roughly 9 steps) [3578fd47137c405b6fb9f90e2e6d1654c71f5e1e] irqchip/irq-bcm7038-l1: Restrict affinity setting to MIPS determine whether the revision contains the guilty commit checking the merge base 9e1ff307c779ce1f0f810c7ecce3d95bbae40896 no existing result, test the revision testing commit 9e1ff307c779ce1f0f810c7ecce3d95bbae40896 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2dd3120ae40f2a5b5b1e0d6271dea239c3f9d88cc55def11e1d0c376c0778241 all runs: crashed: possible deadlock in blocking_notifier_call_chain representative crash: possible deadlock in blocking_notifier_call_chain, types: [LOCKDEP] testing commit 3578fd47137c405b6fb9f90e2e6d1654c71f5e1e gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2dd3120ae40f2a5b5b1e0d6271dea239c3f9d88cc55def11e1d0c376c0778241 all runs: crashed: possible deadlock in blocking_notifier_call_chain representative crash: possible deadlock in blocking_notifier_call_chain, types: [LOCKDEP] # git bisect good 3578fd47137c405b6fb9f90e2e6d1654c71f5e1e Bisecting: 627 revisions left to test after this (roughly 9 steps) [fdc9e4e0ef897351f953c3a37e644670e3195926] parisc: Use PRIV_USER in syscall.S determine whether the revision contains the guilty commit revision 9e1ff307c779ce1f0f810c7ecce3d95bbae40896 crashed and is reachable testing commit fdc9e4e0ef897351f953c3a37e644670e3195926 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cbf72dfd391d23e2a161176f1ca88f39e957de6a1cd39a46b02481203e91293b all runs: crashed: possible deadlock in blocking_notifier_call_chain representative crash: possible deadlock in blocking_notifier_call_chain, types: [LOCKDEP] # git bisect good fdc9e4e0ef897351f953c3a37e644670e3195926 Bisecting: 604 revisions left to test after this (roughly 9 steps) [14831fad73f5ac30ac61760487d95a538e6ab3cb] arm64: vdso32: suppress error message for 'make mrproper' determine whether the revision contains the guilty commit checking the merge base 5816b3e6577eaa676ceb00a848f0fd65fe2adc29 no existing result, test the revision testing commit 5816b3e6577eaa676ceb00a848f0fd65fe2adc29 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2dcc5ae902760067c92688a07c6451fd148d72989fc47cd377ce842658bfc7d5 all runs: crashed: possible deadlock in blocking_notifier_call_chain representative crash: possible deadlock in blocking_notifier_call_chain, types: [LOCKDEP] testing commit 14831fad73f5ac30ac61760487d95a538e6ab3cb gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2dcc5ae902760067c92688a07c6451fd148d72989fc47cd377ce842658bfc7d5 all runs: crashed: possible deadlock in blocking_notifier_call_chain representative crash: possible deadlock in blocking_notifier_call_chain, types: [LOCKDEP] # git bisect good 14831fad73f5ac30ac61760487d95a538e6ab3cb Bisecting: 601 revisions left to test after this (roughly 9 steps) [0d9521b9b526a264a46c42fcde5d3d9a7cb490ea] io-wq: add io_wq_work_node based stack determine whether the revision contains the guilty commit revision 5816b3e6577eaa676ceb00a848f0fd65fe2adc29 crashed and is reachable testing commit 0d9521b9b526a264a46c42fcde5d3d9a7cb490ea gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1ce533ef0f06881ffb1ccc1d81fc465113753998f2f9306114b284cdb58a9043 all runs: crashed: possible deadlock in blocking_notifier_call_chain representative crash: possible deadlock in blocking_notifier_call_chain, types: [LOCKDEP] # git bisect good 0d9521b9b526a264a46c42fcde5d3d9a7cb490ea Bisecting: 601 revisions left to test after this (roughly 9 steps) [785d584c30ffc1224027536fe55bdc15ee509f14] nvme: add new discovery log page entry definitions determine whether the revision contains the guilty commit revision 9e1ff307c779ce1f0f810c7ecce3d95bbae40896 crashed and is reachable testing commit 785d584c30ffc1224027536fe55bdc15ee509f14 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6a329d35958cf7e82e11b4c1deeedec561a485219afc40cc67d0d93d735e5b21 all runs: boot failed: BUG: unable to handle kernel NULL pointer dereference in blk_mq_free_request unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0 # git bisect skip 785d584c30ffc1224027536fe55bdc15ee509f14 Bisecting: 601 revisions left to test after this (roughly 9 steps) [101c0bf67f50ca0e8b9da97b26f8dc7cb232b4d3] mm/filemap: Add folio_wait_bit() determine whether the revision contains the guilty commit revision 5816b3e6577eaa676ceb00a848f0fd65fe2adc29 crashed and is reachable testing commit 101c0bf67f50ca0e8b9da97b26f8dc7cb232b4d3 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1ce09d556720774801cf12fbad4d56be891313ead51109f180be584065fdce17 all runs: crashed: possible deadlock in blocking_notifier_call_chain representative crash: possible deadlock in blocking_notifier_call_chain, types: [LOCKDEP] # git bisect good 101c0bf67f50ca0e8b9da97b26f8dc7cb232b4d3 Bisecting: 601 revisions left to test after this (roughly 9 steps) [26dc129342cfc1e09dcf8473331efcf419a471af] irq: arm64: perform irqentry in entry code determine whether the revision contains the guilty commit revision 9e1ff307c779ce1f0f810c7ecce3d95bbae40896 crashed and is reachable testing commit 26dc129342cfc1e09dcf8473331efcf419a471af gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c8ee33ffb5b2bd6dae18e2379281ac363c19e172af110fc5e2951cfb7831e818 all runs: crashed: possible deadlock in blocking_notifier_call_chain representative crash: possible deadlock in blocking_notifier_call_chain, types: [LOCKDEP] # git bisect good 26dc129342cfc1e09dcf8473331efcf419a471af Bisecting: 589 revisions left to test after this (roughly 9 steps) [bff7c57c2f50dca7b5e320f499e0898c3fb8a9ff] futex: Simplify double_lock_hb() determine whether the revision contains the guilty commit checking the merge base 81121524f1c798c9481bd7900450b72ee7ac2eef no existing result, test the revision testing commit 81121524f1c798c9481bd7900450b72ee7ac2eef gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a28de6781e560308d3ac526eaa4a7d95929d3168cb7f4fc121ae0b98012ee03e all runs: crashed: possible deadlock in blocking_notifier_call_chain representative crash: possible deadlock in blocking_notifier_call_chain, types: [LOCKDEP] testing commit bff7c57c2f50dca7b5e320f499e0898c3fb8a9ff gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cba4ac13888b657206937e4546d6b6b5449e611cdf70be2b95866604d5ebc934 all runs: crashed: possible deadlock in blocking_notifier_call_chain representative crash: possible deadlock in blocking_notifier_call_chain, types: [LOCKDEP] # git bisect good bff7c57c2f50dca7b5e320f499e0898c3fb8a9ff Bisecting: 557 revisions left to test after this (roughly 9 steps) [2953b30b1d9feb1bc555682e64e6479d197b9231] nvmet: register discovery subsystem as 'current' determine whether the revision contains the guilty commit revision 81121524f1c798c9481bd7900450b72ee7ac2eef crashed and is reachable testing commit 2953b30b1d9feb1bc555682e64e6479d197b9231 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6a329d35958cf7e82e11b4c1deeedec561a485219afc40cc67d0d93d735e5b21 all runs: boot failed: BUG: unable to handle kernel NULL pointer dereference in blk_mq_free_request unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0 # git bisect skip 2953b30b1d9feb1bc555682e64e6479d197b9231 Bisecting: 557 revisions left to test after this (roughly 9 steps) [5513b241b2ef903b36c2ff74976618885fc5a318] ext4: use sb_bdev_nr_blocks determine whether the revision contains the guilty commit revision 81121524f1c798c9481bd7900450b72ee7ac2eef crashed and is reachable testing commit 5513b241b2ef903b36c2ff74976618885fc5a318 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1b00f03b6a7c3fa87806b313e7b2e450a17bf4437bb344c3a1fea44968b3febd all runs: boot failed: BUG: unable to handle kernel NULL pointer dereference in blk_mq_free_request unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0 # git bisect skip 5513b241b2ef903b36c2ff74976618885fc5a318 Bisecting: 557 revisions left to test after this (roughly 9 steps) [1a15eb724aaef8656f8cc01d9355797cfe7c618e] btrfs: use btrfs_get_dev_args_from_path in dev removal ioctls determine whether the revision contains the guilty commit revision 81121524f1c798c9481bd7900450b72ee7ac2eef crashed and is reachable testing commit 1a15eb724aaef8656f8cc01d9355797cfe7c618e gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7fbf273095c2dd6b02851cb3d8cc26ecac83565f43c064929cc85becc0cb7b6e all runs: crashed: possible deadlock in blocking_notifier_call_chain representative crash: possible deadlock in blocking_notifier_call_chain, types: [LOCKDEP] # git bisect good 1a15eb724aaef8656f8cc01d9355797cfe7c618e Bisecting: 500 revisions left to test after this (roughly 9 steps) [91e1c99e175ae6bb6be765c6fcd40e869f8f6aee] Merge tag 'perf-core-2021-10-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip determine whether the revision contains the guilty commit revision 2953b30b1d9feb1bc555682e64e6479d197b9231 crashed and is reachable testing commit 91e1c99e175ae6bb6be765c6fcd40e869f8f6aee gcc compiler: gcc (GCC) 10.2.1 20210217 failed building 91e1c99e175ae6bb6be765c6fcd40e869f8f6aee: scripts/extract-cert.c:46:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] scripts/extract-cert.c:59:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] scripts/sign-file.c:89:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] scripts/sign-file.c:102:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] ./include/linux/page-flags.h:806:29: error: macro "PAGEFLAG_FALSE" requires 2 arguments, but only 1 given ./include/linux/page-flags.h:807:32: error: macro "TESTSCFLAG_FALSE" requires 2 arguments, but only 1 given ./include/linux/page-flags.h:806:1: error: unknown type name 'PAGEFLAG_FALSE' ./include/linux/page-flags.h:807:18: error: expected ';' before 'static' # git bisect skip 91e1c99e175ae6bb6be765c6fcd40e869f8f6aee Bisecting: 500 revisions left to test after this (roughly 9 steps) [c88598a92a587109d915b4d97831bcea774c8b6f] io_uring: optimise read/write iov state storing determine whether the revision contains the guilty commit revision 9e1ff307c779ce1f0f810c7ecce3d95bbae40896 crashed and is reachable testing commit c88598a92a587109d915b4d97831bcea774c8b6f gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d9d7f4982381e2510cf755ec06c8471e71bb76cc51634d4aa7ebb824e7d7e82f all runs: crashed: possible deadlock in blocking_notifier_call_chain representative crash: possible deadlock in blocking_notifier_call_chain, types: [LOCKDEP] # git bisect good c88598a92a587109d915b4d97831bcea774c8b6f Bisecting: 486 revisions left to test after this (roughly 9 steps) [595b28fb0c8949463d8ec1e485f36d17c870ddb2] Merge tag 'locking-core-2021-10-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip determine whether the revision contains the guilty commit revision 0d9521b9b526a264a46c42fcde5d3d9a7cb490ea crashed and is reachable testing commit 595b28fb0c8949463d8ec1e485f36d17c870ddb2 gcc compiler: gcc (GCC) 10.2.1 20210217 failed building 595b28fb0c8949463d8ec1e485f36d17c870ddb2: scripts/extract-cert.c:46:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] scripts/extract-cert.c:59:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] scripts/sign-file.c:89:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] scripts/sign-file.c:102:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] ./include/linux/page-flags.h:806:29: error: macro "PAGEFLAG_FALSE" requires 2 arguments, but only 1 given ./include/linux/page-flags.h:807:32: error: macro "TESTSCFLAG_FALSE" requires 2 arguments, but only 1 given ./include/linux/page-flags.h:806:1: error: unknown type name 'PAGEFLAG_FALSE' ./include/linux/page-flags.h:807:18: error: expected ';' before 'static' # git bisect skip 595b28fb0c8949463d8ec1e485f36d17c870ddb2 Bisecting: 486 revisions left to test after this (roughly 9 steps) [60f2415e19d3948641149ac6aca137a7be1d1952] sched: Make schedstats helpers independent of fair sched class determine whether the revision contains the guilty commit revision 81121524f1c798c9481bd7900450b72ee7ac2eef crashed and is reachable testing commit 60f2415e19d3948641149ac6aca137a7be1d1952 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 96071f93734cdf33c58fa12e09d63b85ebc0b091a5c35957459b82629fd689c3 all runs: crashed: possible deadlock in blocking_notifier_call_chain representative crash: possible deadlock in blocking_notifier_call_chain, types: [LOCKDEP] # git bisect good 60f2415e19d3948641149ac6aca137a7be1d1952 Bisecting: 472 revisions left to test after this (roughly 9 steps) [715cbfd6c5c595bc8b7a6f9ad1fe9fec0122bb20] mm/migrate: Add folio_migrate_copy() determine whether the revision contains the guilty commit revision 101c0bf67f50ca0e8b9da97b26f8dc7cb232b4d3 crashed and is reachable testing commit 715cbfd6c5c595bc8b7a6f9ad1fe9fec0122bb20 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7264c2eda665d0d5fd322f5434368f2ac5d3efbf42dee9812991195bccab798e all runs: crashed: possible deadlock in blocking_notifier_call_chain representative crash: possible deadlock in blocking_notifier_call_chain, types: [LOCKDEP] # git bisect good 715cbfd6c5c595bc8b7a6f9ad1fe9fec0122bb20 Bisecting: 472 revisions left to test after this (roughly 9 steps) [7d380f24fe662033fd21a65f678057abd293f76e] sched/numa: Fix a few comments determine whether the revision contains the guilty commit revision 81121524f1c798c9481bd7900450b72ee7ac2eef crashed and is reachable testing commit 7d380f24fe662033fd21a65f678057abd293f76e gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1326a17b89bdaa3154a3b24850830db9a751a4a3c2a1d140ba8648c7a7cfce81 all runs: OK false negative chance: 0.000 # git bisect bad 7d380f24fe662033fd21a65f678057abd293f76e Bisecting: 14 revisions left to test after this (roughly 4 steps) [d07b2eee4501c393cbf5bfcad36143310cfd72f9] sched: Make cookie functions static determine whether the revision contains the guilty commit revision 60f2415e19d3948641149ac6aca137a7be1d1952 crashed and is reachable testing commit d07b2eee4501c393cbf5bfcad36143310cfd72f9 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4e0f6faafed605ef0e492cf125a75dd916bea8bd5b12c580878e584c0b1111e7 all runs: OK false negative chance: 0.000 # git bisect bad d07b2eee4501c393cbf5bfcad36143310cfd72f9 Bisecting: 6 revisions left to test after this (roughly 3 steps) [1a7243ca4074beed97b68d7235a6e34862fc2cd6] kthread: Move prio/affinite change into the newly created thread determine whether the revision contains the guilty commit revision 9e1ff307c779ce1f0f810c7ecce3d95bbae40896 crashed and is reachable testing commit 1a7243ca4074beed97b68d7235a6e34862fc2cd6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 95f1e046c094722b7901eab7b36d6834fa76a6bc28505a004676c5f8731da595 all runs: OK false negative chance: 0.000 # git bisect bad 1a7243ca4074beed97b68d7235a6e34862fc2cd6 Bisecting: 3 revisions left to test after this (roughly 2 steps) [95fd58e8dadb7aa707628a2187c626bb897c49ec] sched/dl: Support sched_stat_runtime tracepoint for deadline sched class determine whether the revision contains the guilty commit revision 9e1ff307c779ce1f0f810c7ecce3d95bbae40896 crashed and is reachable testing commit 95fd58e8dadb7aa707628a2187c626bb897c49ec gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9ab2d7a95b7ddad31660fbd405e84bcc3a09a2db8d218375ea0979d5be7d64d8 all runs: crashed: possible deadlock in blocking_notifier_call_chain representative crash: possible deadlock in blocking_notifier_call_chain, types: [LOCKDEP] # git bisect good 95fd58e8dadb7aa707628a2187c626bb897c49ec Bisecting: 1 revision left to test after this (roughly 1 step) [32ed980c3020b7a19e26dc488c10817807ba2a41] sched: Remove unused inline function __rq_clock_broken() determine whether the revision contains the guilty commit revision 95fd58e8dadb7aa707628a2187c626bb897c49ec crashed and is reachable testing commit 32ed980c3020b7a19e26dc488c10817807ba2a41 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 057046f058eea393bfaf72f6b5ac4859171e2bd669e090b85780bbeeea8ee742 all runs: crashed: possible deadlock in blocking_notifier_call_chain representative crash: possible deadlock in blocking_notifier_call_chain, types: [LOCKDEP] # git bisect good 32ed980c3020b7a19e26dc488c10817807ba2a41 Bisecting: 0 revisions left to test after this (roughly 0 steps) [c597bfddc9e9e8a63817252b67c3ca0e544ace26] sched: Provide Kconfig support for default dynamic preempt mode determine whether the revision contains the guilty commit revision 32ed980c3020b7a19e26dc488c10817807ba2a41 crashed and is reachable testing commit c597bfddc9e9e8a63817252b67c3ca0e544ace26 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a116e7db8ea293456e95a6c9649af651ef17e8a8e102e46922fb534c8f6f1dd3 all runs: crashed: possible deadlock in blocking_notifier_call_chain representative crash: possible deadlock in blocking_notifier_call_chain, types: [LOCKDEP] # git bisect good c597bfddc9e9e8a63817252b67c3ca0e544ace26 1a7243ca4074beed97b68d7235a6e34862fc2cd6 is the first bad commit commit 1a7243ca4074beed97b68d7235a6e34862fc2cd6 Author: Sebastian Andrzej Siewior Date: Tue Nov 10 12:38:47 2020 +0100 kthread: Move prio/affinite change into the newly created thread With enabled threaded interrupts the nouveau driver reported the following: | Chain exists of: | &mm->mmap_lock#2 --> &device->mutex --> &cpuset_rwsem | | Possible unsafe locking scenario: | | CPU0 CPU1 | ---- ---- | lock(&cpuset_rwsem); | lock(&device->mutex); | lock(&cpuset_rwsem); | lock(&mm->mmap_lock#2); The device->mutex is nvkm_device::mutex. Unblocking the lockchain at `cpuset_rwsem' is probably the easiest thing to do. Move the priority reset to the start of the newly created thread. Fixes: 710da3c8ea7df ("sched/core: Prevent race condition between cpuset and __sched_setscheduler()") Reported-by: Mike Galbraith Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Peter Zijlstra (Intel) Link: https://lkml.kernel.org/r/a23a826af7c108ea5651e73b8fbae5e653f16e86.camel@gmx.de kernel/kthread.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) accumulated error probability: 0.00 culprit signature: 95f1e046c094722b7901eab7b36d6834fa76a6bc28505a004676c5f8731da595 parent signature: a116e7db8ea293456e95a6c9649af651ef17e8a8e102e46922fb534c8f6f1dd3 revisions tested: 40, total time: 6h18m56.232610775s (build: 1h31m50.892339031s, test: 4h36m58.581660898s) first good commit: 1a7243ca4074beed97b68d7235a6e34862fc2cd6 kthread: Move prio/affinite change into the newly created thread recipients (to): ["bigeasy@linutronix.de" "peterz@infradead.org"] recipients (cc): []