ci starts bisection 2025-05-19 00:40:23.699798076 +0000 UTC m=+190555.314280925
bisecting fixing commit since a4412fdd49dc011bcc2c0d81ac4cab7457092650
building syzkaller on e080de16713b9dbf308cdd7bcb85b58293e46e33
ensuring issue is reproducible on original commit a4412fdd49dc011bcc2c0d81ac4cab7457092650
testing commit a4412fdd49dc011bcc2c0d81ac4cab7457092650 gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: e5b539bfb0ee356be9abb6dcf20ea3dc0bf73145f7d18870abf64cc8719d4867
all runs: crashed: INFO: task hung in walk_component
representative crash: INFO: task hung in walk_component, types: [HANG]
check whether we can drop unnecessary instrumentation
disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
testing commit a4412fdd49dc011bcc2c0d81ac4cab7457092650 gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b4e07c50f80238bc5df8689447d7265087aa51c33a7f4fe178b30f27d2cbbcd2
run #0: crashed: INFO: task hung in fuse_reverse_inval_entry
run #1: crashed: INFO: task hung in walk_component
run #2: crashed: INFO: task hung in walk_component
run #3: crashed: INFO: task hung in walk_component
run #4: crashed: INFO: task hung in walk_component
run #5: crashed: INFO: task hung in walk_component
run #6: crashed: INFO: task hung in walk_component
run #7: crashed: INFO: task hung in walk_component
run #8: crashed: INFO: task hung in walk_component
run #9: crashed: INFO: task hung in walk_component
representative crash: INFO: task hung in fuse_reverse_inval_entry, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed
kconfig minimization: base=4081 full=7502 leaves diff=2033
split chunks (needed=false): <2033>
split chunk #0 of len 2033 into 5 parts
testing without sub-chunk 1/5
disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
testing commit a4412fdd49dc011bcc2c0d81ac4cab7457092650 gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 8455aaf72c3ee1654fac8c0df969dff4fefd56aa86a24fcf6a058a911b8cf54a
all runs: crashed: INFO: task hung in walk_component
representative crash: INFO: task hung in walk_component, 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 a4412fdd49dc011bcc2c0d81ac4cab7457092650 gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 8be23d90fa3ae4070cdb84bd2970a513015d3025749108cf059735af8a78a38d
all runs: OK
false negative chance: 0.000
testing without sub-chunk 3/5
disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed
testing commit a4412fdd49dc011bcc2c0d81ac4cab7457092650 gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 68ec5cd445d4c599991106867e816bfe6ec72c01cb7366c57848898f71c87979
all runs: crashed: INFO: task hung in fuse_simple_request
representative crash: INFO: task hung in fuse_simple_request, types: [HANG]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed
testing commit a4412fdd49dc011bcc2c0d81ac4cab7457092650 gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 106682873d8db172ec10817478326e1f6b9ab733d79c84a8fd4bcf59d6656685
all runs: crashed: INFO: task hung in fuse_simple_request
representative crash: INFO: task hung in fuse_simple_request, types: [HANG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
testing commit a4412fdd49dc011bcc2c0d81ac4cab7457092650 gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 1e1a1086161abe2f530bad975d73f59440d6919858704e931cdc2c9ccf107d16
all runs: crashed: INFO: task hung in fuse_reverse_inval_entry
representative crash: INFO: task hung in fuse_reverse_inval_entry, types: [HANG]
the chunk can be dropped
minimized to 407 configs; suspects: [6LOWPAN ARCH_ENABLE_MEMORY_HOTREMOVE ASUS_WMI CMA COMMON_CLK DAX DLM DRAGONRISE_FF DRM DRM_BOCHS DRM_BRIDGE DRM_BUDDY DRM_CIRRUS_QEMU DRM_DEBUG_MM DRM_DISPLAY_DP_HELPER DRM_DISPLAY_HDCP_HELPER DRM_DISPLAY_HDMI_HELPER DRM_DISPLAY_HELPER DRM_DP_AUX_BUS DRM_DP_AUX_CHARDEV DRM_FBDEV_EMULATION DRM_GEM_SHMEM_HELPER DRM_I915 DRM_I915_CAPTURE_ERROR DRM_I915_COMPRESS_ERROR DRM_I915_USERPTR DRM_KMS_HELPER DRM_MIPI_DSI DRM_NOMODESET 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_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_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 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 EXTCON EXTCON_INTEL_CHT_WC 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_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 FRONTSWAP 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_SYSFS FW_LOADER_USER_HELPER FW_LOADER_USER_HELPER_FALLBACK GACT_PROB GARP GCC12_NO_ARRAY_BOUNDS GENERIC_MSI_IRQ_DOMAIN GENERIC_PHY GENERIC_PTDUMP GET_FREE_REGION 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 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_EISA HAVE_FAST_GUP HAVE_HARDENED_USERCOPY_ALLOCATOR HAVE_KVM_CPU_RELAX_INTERCEPT HAVE_KVM_DIRTY_RING HAVE_KVM_DIRTY_RING_ACQ_REL HAVE_KVM_DIRTY_RING_TSO 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_PFNCACHE 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_DRAGONRISE 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 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_COMPAT I2C_DESIGNWARE_CORE I2C_DESIGNWARE_PLATFORM 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_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 INIT_STACK_NONE 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_SOC_PMIC_CHTWC IOASID 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_TCP IP_VS_PROTO_UDP 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_FWD_NETDEV NF_TABLES NF_TABLES_NETDEV RADIO_ADAPTERS RADIO_SI4713 RAS RC_CORE RFKILL SND SOUND STAGING TRANSPARENT_HUGEPAGE VIDEO_DEV VIRTIO_FS WAN ZONE_DEVICE]
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing current HEAD a5806cd506af5a7c19bcd596e4708b5c464bfd21
testing commit a5806cd506af5a7c19bcd596e4708b5c464bfd21 gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 11e73afb693317016762fb68094554208ef8f0e49d34b54b4d4509bf0f807ab4
run #0: crashed: INFO: task hung in fuse_reverse_inval_entry
run #1: crashed: INFO: task hung in fuse_reverse_inval_entry
run #2: crashed: INFO: task hung in walk_component
run #3: crashed: INFO: task hung in walk_component
run #4: crashed: INFO: task hung in walk_component
run #5: crashed: INFO: task hung in walk_component
run #6: crashed: INFO: task hung in walk_component
run #7: crashed: INFO: task hung in walk_component
run #8: crashed: INFO: task hung in walk_component
run #9: crashed: INFO: task hung in walk_component
representative crash: INFO: task hung in fuse_reverse_inval_entry, types: [HANG]
crash still not fixed/happens on the oldest tested release
revisions tested: 8, total time: 1h48m38.22354275s (build: 51m7.701122751s, test: 52m19.069832239s)
crash still not fixed or there were kernel test errors
commit msg: Linux 6.15-rc7
crash: INFO: task hung in fuse_reverse_inval_entry
INFO: task syz-executor.0:2503 blocked for more than 143 seconds.
Not tainted 6.15.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:14280 pid:2503 tgid:2501 ppid:2085 task_flags:0x400140 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x593/0xd20 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0x25/0x110 kernel/sched/core.c:6860
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6917
rwsem_down_write_slowpath+0x2b8/0x740 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write_nested+0x7f/0x90 kernel/locking/rwsem.c:1694
inode_lock_nested include/linux/fs.h:902 [inline]
fuse_reverse_inval_entry+0x44/0x210 fs/fuse/dir.c:1399
fuse_notify_delete fs/fuse/dev.c:1730 [inline]
fuse_notify fs/fuse/dev.c:2047 [inline]
fuse_dev_do_write+0x10d3/0x1250 fs/fuse/dev.c:2132
fuse_dev_write+0x63/0x90 fs/fuse/dev.c:2216
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0x2af/0x4b0 fs/read_write.c:684
ksys_write+0x6e/0xe0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x6d/0x180 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f263d07c859
RSP: 002b:00007f263de9f0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f263d19c050 RCX: 00007f263d07c859
RDX: 000000000000002c RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007f263d0d8ad0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f263d19c050 R15: 00007fff94e3cd68
Showing all locks held in the system:
1 lock held by khungtaskd/31:
#0: ffffffff835e4a00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff835e4a00 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff835e4a00 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x36/0x120 kernel/locking/lockdep.c:6764
2 locks held by getty/1546:
#0: ffff888100ab70a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x23/0x60 drivers/tty/tty_ldisc.c:243
#1: ffffc900001fb2f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x17a/0x660 drivers/tty/n_tty.c:2222
1 lock held by syz-executor.0/2085:
#0: ffff88817a548148 (&type->i_mutex_dir_key#8){....}-{3:3}, at: inode_lock_shared include/linux/fs.h:877 [inline]
#0: ffff88817a548148 (&type->i_mutex_dir_key#8){....}-{3:3}, at: lookup_slow fs/namei.c:1833 [inline]
#0: ffff88817a548148 (&type->i_mutex_dir_key#8){....}-{3:3}, at: walk_component+0xc7/0x150 fs/namei.c:2138
2 locks held by syz-executor.0/2502:
#0: ffff88817a548148 (&type->i_mutex_dir_key#8){....}-{3:3}, at: inode_lock_shared include/linux/fs.h:877 [inline]
#0: ffff88817a548148 (&type->i_mutex_dir_key#8){....}-{3:3}, at: lookup_slow fs/namei.c:1833 [inline]
#0: ffff88817a548148 (&type->i_mutex_dir_key#8){....}-{3:3}, at: walk_component+0xc7/0x150 fs/namei.c:2138
#1: ffff88817a548608 (&fi->mutex){....}-{3:3}, at: fuse_lock_inode+0x30/0x40 fs/fuse/inode.c:590
2 locks held by syz-executor.0/2503:
#0: ffff88810ab94350 (&fc->killsb){....}-{3:3}, at: fuse_notify_delete fs/fuse/dev.c:1729 [inline]
#0: ffff88810ab94350 (&fc->killsb){....}-{3:3}, at: fuse_notify fs/fuse/dev.c:2047 [inline]
#0: ffff88810ab94350 (&fc->killsb){....}-{3:3}, at: fuse_dev_do_write+0x10b9/0x1250 fs/fuse/dev.c:2132
#1: ffff88817a548148 (&type->i_mutex_dir_key#8/1){....}-{3:3}, at: inode_lock_nested include/linux/fs.h:902 [inline]
#1: ffff88817a548148 (&type->i_mutex_dir_key#8/1){....}-{3:3}, at: fuse_reverse_inval_entry+0x44/0x210 fs/fuse/dir.c:1399
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.15.0-rc7-syzkaller #0 PREEMPT(undef)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x5a/0x90 lib/dump_stack.c:120
nmi_cpu_backtrace+0xd4/0x110 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0xd5/0x140 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:274 [inline]
watchdog+0x652/0x690 kernel/hung_task.c:437
kthread+0x104/0x200 kernel/kthread.c:464
ret_from_fork+0x2f/0x50 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 53 Comm: kworker/u8:3 Not tainted 6.15.0-rc7-syzkaller #0 PREEMPT(undef)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:flush_tlb_mm_range+0x56/0x670 arch/x86/mm/tlb.c:1369
Code: 54 24 08 e8 3c 62 05 00 48 c7 c7 b6 f3 29 83 e8 20 da 59 01 65 44 8b 25 7c 97 10 03 b8 01 00 00 00 f0 48 0f c1 83 90 06 00 00 <48> 89 ee 4c 8d 48 01 45 0f b6 c5 44 89 f1 4c 89 fa 48 89 df e8 41
RSP: 0018:ffffc900001d7c88 EFLAGS: 00000006
RAX: 000000000000337a RBX: ffff888100068000 RCX: 000000000000000c
RDX: 0000000000000002 RSI: ffffffff8329f3b6 RDI: ffffffff83257760
RBP: 00002aaaaaaab000 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff843badfa R12: 0000000000000000
R13: 0000000000000000 R14: 000000000000000c R15: 00002aaaaaaac000
FS: 0000000000000000(0000) GS:ffff8882b388d000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc2a0e1b522 CR3: 00000000034b0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__text_poke+0x26b/0x490 arch/x86/kernel/alternative.c:2619
text_poke arch/x86/kernel/alternative.c:2656 [inline]
text_poke_bp_batch+0x2bd/0x3a0 arch/x86/kernel/alternative.c:3045
text_poke_flush arch/x86/kernel/alternative.c:3158 [inline]
text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:3165
arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:146
static_key_enable_cpuslocked kernel/jump_label.c:210 [inline]
static_key_enable_cpuslocked kernel/jump_label.c:197 [inline]
static_key_enable+0x54/0x60 kernel/jump_label.c:223
toggle_allocation_gate mm/kfence/core.c:850 [inline]
toggle_allocation_gate+0x58/0x130 mm/kfence/core.c:842
process_one_work+0x22e/0x660 kernel/workqueue.c:3238
process_scheduled_works kernel/workqueue.c:3319 [inline]
worker_thread+0x1c7/0x370 kernel/workqueue.c:3400
kthread+0x104/0x200 kernel/kthread.c:464
ret_from_fork+0x2f/0x50 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245