ci starts bisection 2024-11-27 10:06:55.805567013 +0000 UTC m=+29524.590176368
bisecting cause commit starting from ed9a4ad6e5bd3a443e81446476718abebee47e82
building syzkaller on 11dbc2540722df00e9c113b3e27c5ea707844273
fetch other tags and check if the commit is present
ensuring issue is reproducible on original commit ed9a4ad6e5bd3a443e81446476718abebee47e82

testing commit ed9a4ad6e5bd3a443e81446476718abebee47e82 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 11bbdbe6d2eef212fd30c5632e28f63de9f353a945f1d0e578b82d0925532dcf
run #0: crashed: lost connection to test machine
run #1: crashed: lost connection to test machine
run #2: crashed: INFO: task hung in netfs_unbuffered_read_iter
run #3: crashed: INFO: task hung in netfs_unbuffered_read_iter
run #4: crashed: INFO: task hung in netfs_unbuffered_read_iter
run #5: crashed: INFO: task hung in netfs_unbuffered_read_iter
run #6: crashed: INFO: task hung in netfs_unbuffered_read_iter
run #7: crashed: INFO: task hung in netfs_unbuffered_read_iter
run #8: crashed: INFO: task hung in netfs_unbuffered_read_iter
run #9: crashed: INFO: task hung in netfs_unbuffered_read_iter
run #10: crashed: INFO: task hung in netfs_unbuffered_read_iter
run #11: crashed: INFO: task hung in netfs_unbuffered_read_iter
run #12: crashed: INFO: task hung in netfs_unbuffered_read_iter
run #13: crashed: INFO: task hung in netfs_unbuffered_read_iter
run #14: crashed: INFO: task hung in netfs_unbuffered_read_iter
run #15: crashed: INFO: task hung in netfs_unbuffered_read_iter
run #16: crashed: INFO: task hung in netfs_unbuffered_read_iter
run #17: crashed: INFO: task hung in netfs_unbuffered_read_iter
run #18: crashed: INFO: task hung in netfs_unbuffered_read_iter
run #19: crashed: INFO: task hung in netfs_unbuffered_read_iter
representative crash: INFO: task hung in netfs_unbuffered_read_iter, types: [HANG]
check whether we can drop unnecessary instrumentation
disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed
testing commit ed9a4ad6e5bd3a443e81446476718abebee47e82 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: a43fc1c434491ac1642cbeb4247cc6c0b72a48e2f75579c4884eba0efa74a6ef
all runs: crashed: INFO: task hung in netfs_unbuffered_read_iter
representative crash: INFO: task hung in netfs_unbuffered_read_iter, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed
kconfig minimization: base=4045 full=8242 leaves diff=2124
split chunks (needed=false): <2124>
split chunk #0 of len 2124 into 5 parts
testing without sub-chunk 1/5
disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed
testing commit ed9a4ad6e5bd3a443e81446476718abebee47e82 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 4633af30989e0f168ee0e7fb36b9e733f550269134eb1be030bfc588ad38d7f0
all runs: crashed: INFO: task hung in netfs_unbuffered_read_iter
representative crash: INFO: task hung in netfs_unbuffered_read_iter, types: [HANG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed
testing commit ed9a4ad6e5bd3a443e81446476718abebee47e82 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
failed building ed9a4ad6e5bd3a443e81446476718abebee47e82: drivers/gpu/drm/bridge/aux-bridge.c:116: undefined reference to `devm_drm_of_get_bridge'
testing without sub-chunk 3/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit ed9a4ad6e5bd3a443e81446476718abebee47e82 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 4136f05983e69feaef0a7b40f0c47bb6c2e5ec39278045490d04f5aadbfd0df7
all runs: crashed: INFO: task hung in netfs_unbuffered_read_iter
representative crash: INFO: task hung in netfs_unbuffered_read_iter, types: [HANG]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed
testing commit ed9a4ad6e5bd3a443e81446476718abebee47e82 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 708c161109a0d6ed9827a835e93f3c3886d86244a6072b3e332c6441a8624eb1
all runs: crashed: INFO: task hung in netfs_unbuffered_read_iter
representative crash: INFO: task hung in netfs_unbuffered_read_iter, types: [HANG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit ed9a4ad6e5bd3a443e81446476718abebee47e82 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: d900b55df169143a14c655d677bd38cf9f380bb4d1026adfb5b2a6a6ee5f8c33
all runs: crashed: INFO: task hung in netfs_unbuffered_read_iter
representative crash: INFO: task hung in netfs_unbuffered_read_iter, types: [HANG]
the chunk can be dropped
minimized to 425 configs; suspects: [6LOWPAN ARCH_ENABLE_MEMORY_HOTREMOVE ASUS_WMI CHARGER_BQ24190 CMA COMMON_CLK DAX DLM DRM DRM_BRIDGE DRM_I915 DRM_I915_USERPTR DRM_KMS_HELPER DRM_MIPI_DSI 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 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_BACKED_BY_FILE 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 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 GROUP_SCHED_WEIGHT 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_DRIVER_CORE 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_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 [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
picked [v6.12 v6.11 v6.10 v6.8 v6.6 v6.4 v6.2 v6.0 v5.17 v5.14 v5.11 v5.8 v5.5 v5.2 v4.20 v4.19] out of 35 release tags
testing release v6.12
testing commit adc218676eef25575469234709c2d87185ca223a gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: ac47e8a1a7abbfdaaf1919742ac49fb2cef2e1c0b3fa46725f4fc054507b0ae5
all runs: OK
false negative chance: 0.000
# git bisect start ed9a4ad6e5bd3a443e81446476718abebee47e82 adc218676eef25575469234709c2d87185ca223a
Bisecting: 6626 revisions left to test after this (roughly 13 steps)
[071b34dcf71523a559b6c39f5d21a268a9531b50] Merge tag 'sound-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

testing commit 071b34dcf71523a559b6c39f5d21a268a9531b50 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 89567f39f816c3a291eeb89e7d5cdb08b87cab0dbab17efa5518ec5f0afbaf97
all runs: OK
false negative chance: 0.000
# git bisect good 071b34dcf71523a559b6c39f5d21a268a9531b50
Bisecting: 3291 revisions left to test after this (roughly 12 steps)
[2f0c4c16e698640023712d9f1b6b7c81d562d401] Merge branch 'nfsd-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux

testing commit 2f0c4c16e698640023712d9f1b6b7c81d562d401 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 5e1c4f80a62b9497598fb1f5ef476bb94f8b5ef57584f9b0efbc52d2e1d667b6
all runs: OK
false negative chance: 0.000
# git bisect good 2f0c4c16e698640023712d9f1b6b7c81d562d401
Bisecting: 1648 revisions left to test after this (roughly 11 steps)
[35a5134140149cfebf224830b3a7db32dd0c08a0] Merge branch 'apparmor-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor

testing commit 35a5134140149cfebf224830b3a7db32dd0c08a0 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: c7b13ec61225ebad15b00425d4ac58f21bf4c95ed307bd6768211b1d89c4eb13
all runs: crashed: INFO: task hung in netfs_unbuffered_read_iter
representative crash: INFO: task hung in netfs_unbuffered_read_iter, types: [HANG]
# git bisect bad 35a5134140149cfebf224830b3a7db32dd0c08a0
Bisecting: 820 revisions left to test after this (roughly 10 steps)
[35cb5917e66c795fe044c28cecc19648d169dcda] Merge branch 'ti-next' of git://git.kernel.org/pub/scm/linux/kernel/git/ti/linux.git

testing commit 35cb5917e66c795fe044c28cecc19648d169dcda gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: be4abaeb25caced8292a5dfbaecfacf8a81ab43bdfad5139cd2d4a16406fb920
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 35cb5917e66c795fe044c28cecc19648d169dcda
Bisecting: 820 revisions left to test after this (roughly 10 steps)
[2029a747a14d2064a53e5e7bfabd48d21d959007] netfs: Abstract out a rolling folio buffer implementation

testing commit 2029a747a14d2064a53e5e7bfabd48d21d959007 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: e5d9d2f27304f952e6f1a64a856472508c0c2ecb00eaf3bca1db0922ee53e82e
all runs: OK
false negative chance: 0.000
# git bisect good 2029a747a14d2064a53e5e7bfabd48d21d959007
Bisecting: 816 revisions left to test after this (roughly 10 steps)
[0c5ee8cb5e6f46a36642660fbd6b65e432804f27] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux.git

testing commit 0c5ee8cb5e6f46a36642660fbd6b65e432804f27 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 2ff4938cc2d68f705c2c9c10bf54d2c31bff5b9c191c74a3c246112ad8df7af1
all runs: OK
false negative chance: 0.000
# git bisect good 0c5ee8cb5e6f46a36642660fbd6b65e432804f27
Bisecting: 388 revisions left to test after this (roughly 9 steps)
[efa7de8815c2d1a8670ef24b5e49ff58906fb61d] Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git

testing commit efa7de8815c2d1a8670ef24b5e49ff58906fb61d gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 7fc5a288902eaf678b03ac8b5194ffb0f11b55bbcd272e0fbd2cda33b32aed7f
all runs: crashed: INFO: task hung in netfs_unbuffered_read_iter
representative crash: INFO: task hung in netfs_unbuffered_read_iter, types: [HANG]
# git bisect bad efa7de8815c2d1a8670ef24b5e49ff58906fb61d
Bisecting: 257 revisions left to test after this (roughly 8 steps)
[a4b14192882a6ac8a7aefd54ba088b960d6c5f63] Merge branch 'xtensa-for-next' of git://github.com/jcmvbkbc/linux-xtensa.git

testing commit a4b14192882a6ac8a7aefd54ba088b960d6c5f63 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: c57ec433d01220f853262a4e08d90359c527e32b5b2edbc573d4eb0b27212214
all runs: OK
false negative chance: 0.000
# git bisect good a4b14192882a6ac8a7aefd54ba088b960d6c5f63
Bisecting: 124 revisions left to test after this (roughly 7 steps)
[f54ff407e6238a3a8e167000726942c1f2c2415a] Merge branch 'pci/controller/qcom'

testing commit f54ff407e6238a3a8e167000726942c1f2c2415a gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: eb0305854e836238e648f242713d75fd5d45c64e8b453cb4743c2db6e068689a
all runs: OK
false negative chance: 0.000
# git bisect good f54ff407e6238a3a8e167000726942c1f2c2415a
Bisecting: 78 revisions left to test after this (roughly 6 steps)
[e1ddbc868d752fcdd9519aaee078b251b8cc1ddf] Merge branch 'for-next' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git

testing commit e1ddbc868d752fcdd9519aaee078b251b8cc1ddf gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 88e152f3b33a1b18d844e5307cb1c7893d55039158d9f342525157eb54614839
all runs: OK
false negative chance: 0.000
# git bisect good e1ddbc868d752fcdd9519aaee078b251b8cc1ddf
Bisecting: 36 revisions left to test after this (roughly 5 steps)
[5c9e141c6f61d518af02ce98a882f715023fef00] Merge branch 'vfs-6.14.netfs' into vfs.all

testing commit 5c9e141c6f61d518af02ce98a882f715023fef00 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 5b08b497e7267000057d43b990350c7566eef72112f3b84a47de9649e60da69b
all runs: crashed: INFO: task hung in netfs_unbuffered_read_iter
representative crash: INFO: task hung in netfs_unbuffered_read_iter, types: [HANG]
# git bisect bad 5c9e141c6f61d518af02ce98a882f715023fef00
Bisecting: 20 revisions left to test after this (roughly 4 steps)
[1bd9011ee163e11f186b72705978fd6b21bdc07b] netfs: Change the read result collector to only use one work item

testing commit 1bd9011ee163e11f186b72705978fd6b21bdc07b gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b9bb9da2b6dd709f9782511d92c6c6b28e12acd7b7d757b26aabc57e9af41cb2
all runs: crashed: INFO: task hung in netfs_unbuffered_read_iter
representative crash: INFO: task hung in netfs_unbuffered_read_iter, types: [HANG]
# git bisect bad 1bd9011ee163e11f186b72705978fd6b21bdc07b
Bisecting: 10 revisions left to test after this (roughly 3 steps)
[46599823a2811e5227762f6fd48c172e89a8167b] cachefiles: Add some subrequest tracepoints

testing commit 46599823a2811e5227762f6fd48c172e89a8167b gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: ab6113bd8f3acb0ee0a6373fc20db88b72356e2b94214a469e0c936cfc9195c2
all runs: OK
false negative chance: 0.000
# git bisect good 46599823a2811e5227762f6fd48c172e89a8167b
Bisecting: 4 revisions left to test after this (roughly 3 steps)
[2b6bae4ca558736f2c21da1fc38b7cf9d880d3b6] afs: Use netfslib for directories

testing commit 2b6bae4ca558736f2c21da1fc38b7cf9d880d3b6 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 4553e048a9eff1daf790b9a64045c0f0d038ba6c6f2d2c5e20ccd70401f86fa1
all runs: OK
false negative chance: 0.000
# git bisect good 2b6bae4ca558736f2c21da1fc38b7cf9d880d3b6
Bisecting: 1 revision left to test after this (roughly 1 step)
[355d0773708200eb86429f60849bafcee4077600] afs: Fix cleanup of immediately failed async calls

testing commit 355d0773708200eb86429f60849bafcee4077600 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 1590e80ca92c7ee39fc96084901f92d0eb835a088157f34b1317926e5be8caae
all runs: OK
false negative chance: 0.000
# git bisect good 355d0773708200eb86429f60849bafcee4077600
Bisecting: 0 revisions left to test after this (roughly 0 steps)
[e31fb01515dae22c28fe96719c91a0efc7379378] afs: Make {Y,}FS.FetchData an asynchronous operation

testing commit e31fb01515dae22c28fe96719c91a0efc7379378 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: bbe75253b005b2ce181a5ccd196576ae56a093e59e92e834d123494da2994e5d
all runs: OK
false negative chance: 0.000
# git bisect good e31fb01515dae22c28fe96719c91a0efc7379378
1bd9011ee163e11f186b72705978fd6b21bdc07b is the first bad commit
commit 1bd9011ee163e11f186b72705978fd6b21bdc07b
Author: David Howells <dhowells@redhat.com>
Date:   Fri Nov 8 17:32:29 2024 +0000

    netfs: Change the read result collector to only use one work item
    
    Change the way netfslib collects read results to do all the collection for
    a particular read request using a single work item that walks along the
    subrequest queue as subrequests make progress or complete, unlocking folios
    progressively rather than doing the unlock in parallel as parallel requests
    come in.
    
    The code is remodelled to be more like the write-side code, though only
    using a single stream.  This makes it more directly comparable and thus
    easier to duplicate fixes between the two sides.
    
    This has a number of advantages:
    
     (1) It's simpler.  There doesn't need to be a complex donation mechanism
         to handle mismatches between the size and alignment of subrequests and
         folios.  The collector unlocks folios as the subrequests covering each
         complete.
    
     (2) It should cause less scheduler overhead as there's a single work item
         in play unlocking pages in parallel when a read gets split up into a
         lot of subrequests instead of one per subrequest.
    
         Whilst the parallellism is nice in theory, in practice, the vast
         majority of loads are sequential reads of the whole file, so
         committing a bunch of threads to unlocking folios out of order doesn't
         help in those cases.
    
     (3) It should make it easier to implement content decryption.  A folio
         cannot be decrypted until all the requests that contribute to it have
         completed - and, again, most loads are sequential and so, most of the
         time, we want to begin decryption sequentially (though it's great if
         the decryption can happen in parallel).
    
    There is a disadvantage in that we're losing the ability to decrypt and
    unlock things on an as-things-arrive basis which may affect some
    applications.
    
    Signed-off-by: David Howells <dhowells@redhat.com>
    Link: https://lore.kernel.org/r/20241108173236.1382366-29-dhowells@redhat.com
    cc: Jeff Layton <jlayton@kernel.org>
    cc: netfs@lists.linux.dev
    cc: linux-fsdevel@vger.kernel.org
    Signed-off-by: Christian Brauner <brauner@kernel.org>

 fs/9p/vfs_addr.c             |   5 +-
 fs/afs/dir.c                 |   8 +-
 fs/netfs/buffered_read.c     | 138 +++++----
 fs/netfs/direct_read.c       |  62 ++--
 fs/netfs/internal.h          |  16 +-
 fs/netfs/main.c              |   2 +-
 fs/netfs/objects.c           |  34 +--
 fs/netfs/read_collect.c      | 663 ++++++++++++++++++++++++-------------------
 fs/netfs/read_pgpriv2.c      |   3 +-
 fs/netfs/read_retry.c        | 207 ++++++++------
 fs/netfs/read_single.c       |  37 +--
 fs/netfs/write_retry.c       |  14 +-
 fs/smb/client/cifssmb.c      |   2 +
 fs/smb/client/smb2pdu.c      |   4 +-
 include/linux/netfs.h        |  17 +-
 include/trace/events/netfs.h |  76 +----
 16 files changed, 670 insertions(+), 618 deletions(-)

accumulated error probability: 0.00
culprit signature: b9bb9da2b6dd709f9782511d92c6c6b28e12acd7b7d757b26aabc57e9af41cb2
parent  signature: bbe75253b005b2ce181a5ccd196576ae56a093e59e92e834d123494da2994e5d
revisions tested: 23, total time: 8h23m4.984636773s (build: 4h32m26.828054723s, test: 3h30m59.955707388s)
first bad commit: 1bd9011ee163e11f186b72705978fd6b21bdc07b netfs: Change the read result collector to only use one work item
recipients (to): ["asmadeus@codewreck.org" "brauner@kernel.org" "dhowells@redhat.com" "dhowells@redhat.com" "ericvh@kernel.org" "linux-afs@lists.infradead.org" "linux-fsdevel@vger.kernel.org" "linux-trace-kernel@vger.kernel.org" "lucho@ionkov.net" "marc.dionne@auristor.com" "mhiramat@kernel.org" "netfs@lists.linux.dev" "rostedt@goodmis.org" "v9fs@lists.linux.dev"]
recipients (cc): ["bharathsm@microsoft.com" "jlayton@kernel.org" "linux-cifs@vger.kernel.org" "linux-kernel@vger.kernel.org" "linux_oss@crudebyte.com" "mathieu.desnoyers@efficios.com" "pc@manguebit.com" "ronniesahlberg@gmail.com" "samba-technical@lists.samba.org" "sfrench@samba.org" "sprasad@microsoft.com" "tom@talpey.com"]
crash: INFO: task hung in netfs_unbuffered_read_iter
INFO: task syz.3.15:3507 blocked for more than 143 seconds.
      Not tainted 6.12.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.15        state:D stack:13320 pid:3507  tgid:3506  ppid:3092   flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5328 [inline]
 __schedule+0x6b2/0xa40 kernel/sched/core.c:6690
 __schedule_loop kernel/sched/core.c:6767 [inline]
 schedule+0xac/0x140 kernel/sched/core.c:6782
 bit_wait+0xc/0x50 kernel/sched/wait_bit.c:199
 __wait_on_bit+0xd0/0x160 kernel/sched/wait_bit.c:49
 out_of_line_wait_on_bit+0x9a/0xc0 kernel/sched/wait_bit.c:64
 wait_on_bit include/linux/wait_bit.h:76 [inline]
 netfs_dispatch_unbuffered_reads fs/netfs/direct_read.c:107 [inline]
 netfs_unbuffered_read fs/netfs/direct_read.c:146 [inline]
 netfs_unbuffered_read_iter_locked+0x3fc/0x6b0 fs/netfs/direct_read.c:231
 netfs_unbuffered_read_iter+0x3c/0x60 fs/netfs/direct_read.c:266
 new_sync_read fs/read_write.c:488 [inline]
 vfs_read+0x2ad/0x300 fs/read_write.c:569
 ksys_read+0x70/0xe0 fs/read_write.c:712
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x8d/0x170 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f73f1b7e819
RSP: 002b:00007f73f299d038 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f73f1d35fa0 RCX: 00007f73f1b7e819
RDX: 0000000000002020 RSI: 000000002001b640 RDI: 0000000000000006
RBP: 00007f73f1bf175e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f73f1d35fa0 R15: 00007ffc64505ca8
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/29:
 #0: ffffffff835dbe50 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #0: ffffffff835dbe50 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffffffff835dbe50 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x30/0x100 kernel/locking/lockdep.c:6720
2 locks held by getty/1634:
 #0: ffff888100abb8a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x20/0x40 drivers/tty/tty_ldisc.c:243
 #1: ffffc900030f72f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x23d/0x910 drivers/tty/n_tty.c:2211
2 locks held by syz.3.15/3507:
 #0: ffff88810e2b9778 (&f->f_pos_lock){....}-{3:3}, at: fdget_pos+0x70/0xa0 fs/file.c:1160
 #1: ffff88817db90148 (&sb->s_type->i_mutex_key#20){....}-{3:3}, at: netfs_start_io_direct+0x8f/0xb0 fs/netfs/locking.c:188
2 locks held by syz.4.16/3925:
 #0: ffff888104b8b8f8 (&f->f_pos_lock){....}-{3:3}, at: fdget_pos+0x70/0xa0 fs/file.c:1160
 #1: ffff88817db90730 (&sb->s_type->i_mutex_key#20){....}-{3:3}, at: netfs_start_io_direct+0x8f/0xb0 fs/netfs/locking.c:188
2 locks held by syz.5.17/4344:
 #0: ffff88810675acf8 (&f->f_pos_lock){....}-{3:3}, at: fdget_pos+0x70/0xa0 fs/file.c:1160
 #1: ffff88817db90d18 (&sb->s_type->i_mutex_key#20){....}-{3:3}, at: netfs_start_io_direct+0x8f/0xb0 fs/netfs/locking.c:188
2 locks held by syz.6.18/4763:
 #0: ffff888104b8b5f8 (&f->f_pos_lock){....}-{3:3}, at: fdget_pos+0x70/0xa0 fs/file.c:1160
 #1: ffff888174958148 (&sb->s_type->i_mutex_key#20){....}-{3:3}, at: netfs_start_io_direct+0x8f/0xb0 fs/netfs/locking.c:188
2 locks held by syz.7.19/5182:
 #0: ffff888106395478 (&f->f_pos_lock){....}-{3:3}, at: fdget_pos+0x70/0xa0 fs/file.c:1160
 #1: ffff88817db91300 (&sb->s_type->i_mutex_key#20){....}-{3:3}, at: netfs_start_io_direct+0x8f/0xb0 fs/netfs/locking.c:188
2 locks held by syz.8.20/5600:
 #0: ffff88810e2b9178 (&f->f_pos_lock){....}-{3:3}, at: fdget_pos+0x70/0xa0 fs/file.c:1160
 #1: ffff888174958730 (&sb->s_type->i_mutex_key#20){....}-{3:3}, at: netfs_start_io_direct+0x8f/0xb0 fs/netfs/locking.c:188
2 locks held by syz.9.21/6018:
 #0: ffff88810e2b98f8 (&f->f_pos_lock){....}-{3:3}, at: fdget_pos+0x70/0xa0 fs/file.c:1160
 #1: ffff88817db918e8 (&sb->s_type->i_mutex_key#20){....}-{3:3}, at: netfs_start_io_direct+0x8f/0xb0 fs/netfs/locking.c:188
2 locks held by syz.0.22/6436:
 #0: ffff8881073d7a78 (&f->f_pos_lock){....}-{3:3}, at: fdget_pos+0x70/0xa0 fs/file.c:1160
 #1: ffff888174958d18 (&sb->s_type->i_mutex_key#20){....}-{3:3}, at: netfs_start_io_direct+0x8f/0xb0 fs/netfs/locking.c:188
2 locks held by syz.1.23/6854:
 #0: ffff88810f7389f8 (&f->f_pos_lock){....}-{3:3}, at: fdget_pos+0x70/0xa0 fs/file.c:1160
 #1: ffff88817db91ed0 (&sb->s_type->i_mutex_key#20){....}-{3:3}, at: netfs_start_io_direct+0x8f/0xb0 fs/netfs/locking.c:188
2 locks held by syz.2.24/7272:
 #0: ffff88810f738cf8 (&f->f_pos_lock){....}-{3:3}, at: fdget_pos+0x70/0xa0 fs/file.c:1160
 #1: ffff88817db924b8 (&sb->s_type->i_mutex_key#20){....}-{3:3}, at: netfs_start_io_direct+0x8f/0xb0 fs/netfs/locking.c:188

=============================================

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 29 Comm: khungtaskd Not tainted 6.12.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x3e/0xe0 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x146/0x160 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x8e/0x140 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
 watchdog+0x5e4/0x610 kernel/hung_task.c:379
 kthread+0xea/0x100 kernel/kthread.c:389
 ret_from_fork+0x32/0x40 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 37 Comm: kworker/u8:2 Not tainted 6.12.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:find_next_bit include/linux/find.h:66 [inline]
RIP: 0010:cpumask_any_but include/linux/cpumask.h:407 [inline]
RIP: 0010:flush_tlb_mm_range+0x107/0x1d0 arch/x86/mm/tlb.c:1023
Code: 8f 30 68 01 41 89 85 e0 ee 02 00 49 8d be 80 08 00 00 41 0f b6 86 80 08 00 00 31 c9 ba 08 00 00 00 48 89 c6 48 d3 ee 48 d3 e6 <48> 85 f6 74 1a f3 48 0f bc ce 83 f9 07 77 0e 41 39 cc 75 09 ff c1
RSP: 0018:ffffc9000013fc58 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 00002aaaaaaac000 RCX: 0000000000000000
RDX: 0000000000000008 RSI: 0000000000000000 RDI: ffff888100070880
RBP: 00002aaaaaaab000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff81042410 R12: 0000000000000000
R13: ffff888237c00000 R14: ffff888100070000 R15: 0000000000007781
FS:  0000000000000000(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555764f54a8 CR3: 00000000034aa000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 __text_poke+0x32b/0x440 arch/x86/kernel/alternative.c:1947
 text_poke arch/x86/kernel/alternative.c:1984 [inline]
 text_poke_bp_batch+0x25f/0x310 arch/x86/kernel/alternative.c:2373
 text_poke_flush arch/x86/kernel/alternative.c:2486 [inline]
 text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:2493
 arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:146
 static_key_disable_cpuslocked kernel/jump_label.c:240 [inline]
 static_key_disable+0x40/0x60 kernel/jump_label.c:248
 toggle_allocation_gate+0xe6/0x130 mm/kfence/core.c:854
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0x2ab/0x5c0 kernel/workqueue.c:3310
 worker_thread+0x23e/0x2e0 kernel/workqueue.c:3391
 kthread+0xea/0x100 kernel/kthread.c:389
 ret_from_fork+0x32/0x40 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>