ci2 starts bisection 2025-04-20 03:39:57.656839012 +0000 UTC m=+195244.818566076
bisecting fixing commit since 85652baa895b59b94bea29c77cb9b51cf7120deb
building syzkaller on dbc93b085f18cf00b6c0e077c902b5f83ecbe76c
ensuring issue is reproducible on original commit 85652baa895b59b94bea29c77cb9b51cf7120deb
testing commit 85652baa895b59b94bea29c77cb9b51cf7120deb gcc
compiler: Debian clang version 15.0.6, Debian LLD 15.0.6
kernel signature: 90cf723a707d2291774917c0149ccde42156c9c7f722c4fa32679c87708d399c
all runs: crashed: INFO: task hung in xfs_buf_item_unpin
representative crash: INFO: task hung in xfs_buf_item_unpin, types: [HANG]
check whether we can drop unnecessary instrumentation
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 85652baa895b59b94bea29c77cb9b51cf7120deb gcc
compiler: Debian clang version 15.0.6, Debian LLD 15.0.6
kernel signature: cd3e9ae71df61ede5f6a87a6f44ca61f21ef56fd25eb08e7ebf5097327991cbe
run #0: crashed: INFO: task hung in xlog_force_lsn
run #1: crashed: INFO: task hung in xfs_buf_item_unpin
run #2: crashed: INFO: task hung in xfs_buf_item_unpin
run #3: crashed: INFO: task hung in xfs_buf_item_unpin
run #4: crashed: INFO: task hung in xfs_buf_item_unpin
run #5: crashed: INFO: task hung in xfs_buf_item_unpin
run #6: crashed: INFO: task hung in xfs_buf_item_unpin
run #7: crashed: INFO: task hung in xfs_buf_item_unpin
run #8: crashed: INFO: task hung in xfs_buf_item_unpin
run #9: crashed: INFO: task hung in xfs_buf_item_unpin
representative crash: INFO: task hung in xlog_force_lsn, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
kconfig minimization: base=4068 full=8129 leaves diff=2131
split chunks (needed=false): <2131>
split chunk #0 of len 2131 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 85652baa895b59b94bea29c77cb9b51cf7120deb gcc
compiler: Debian clang version 15.0.6, Debian LLD 15.0.6
kernel signature: 0815f3fba2b8523f74197b3ce0bc3cc1c448713189ecdd4f1be0c95a38a511eb
all runs: crashed: INFO: task hung in xfs_buf_item_unpin
representative crash: INFO: task hung in xfs_buf_item_unpin, types: [HANG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 85652baa895b59b94bea29c77cb9b51cf7120deb gcc
compiler: Debian clang version 15.0.6, Debian LLD 15.0.6
kernel signature: 46c1f8a8720d62c5805b52d5bba0b3fa63eeaa7561f01112421ee69426edae1a
all runs: crashed: INFO: task hung in xfs_buf_item_unpin
representative crash: INFO: task hung in xfs_buf_item_unpin, types: [HANG]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
testing commit 85652baa895b59b94bea29c77cb9b51cf7120deb gcc
compiler: Debian clang version 15.0.6, Debian LLD 15.0.6
kernel signature: a243a7e63b10fba0cd1da8611a30a3793eaaf8b1ca5e93a70262057a1ac40bf8
all runs: crashed: INFO: task hung in xfs_buf_item_unpin
representative crash: INFO: task hung in xfs_buf_item_unpin, types: [HANG]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed
testing commit 85652baa895b59b94bea29c77cb9b51cf7120deb gcc
compiler: Debian clang version 15.0.6, Debian LLD 15.0.6
kernel signature: 9243d3dbb14177bd9b0599f131580ec72a230ce389ccbfdbefc5065bdb9addf7
all runs: crashed: INFO: task hung in xfs_buf_item_unpin
representative crash: INFO: task hung in xfs_buf_item_unpin, 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 85652baa895b59b94bea29c77cb9b51cf7120deb gcc
compiler: Debian clang version 15.0.6, Debian LLD 15.0.6
kernel signature: f465f37b6d6862dcb45534b91cc30a7ea52cd8347359c5fa8e5fa654272ffeaf
all runs: OK
false negative chance: 0.000
minimized to 423 configs; suspects: [ARCH_ENABLE_MEMORY_HOTREMOVE ATM BCMA BLK_DEV_ZONED BPF_SYSCALL CARDBUS CFG80211 CFG80211_WEXT CMA COMMON_CLK CONTIG_ALLOC CRYPTO_842 CRYPTO_LZ4 CRYPTO_LZ4HC CRYPTO_ZSTD DVB_CORE EXTCON FB GPIOLIB HAVE_ZSMALLOC HID_ZEROPLUS I2C_MUX IIO IOMMUFD IRQ_REMAP KVM KVM_INTEL LIBNVDIMM MCORE2 MEDIA_ANALOG_TV_SUPPORT MEDIA_CAMERA_SUPPORT MEDIA_CEC_SUPPORT MEDIA_CONTROLLER MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_TEST_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_VIPERBOARD NOP_USB_XCEIV PARPORT PCCARD PCMCIA PHONET RADIO_ADAPTERS RADIO_SI470X RADIO_SI4713 RC_CORE RFKILL SND SOUND SPI SSB TAP TARGET_CORE TUN USB_AMD5536UDC USB_ATM USB_CHAOSKEY USB_CHIPIDEA USB_CHIPIDEA_GENERIC USB_CHIPIDEA_HOST USB_CHIPIDEA_MSM USB_CHIPIDEA_NPCM USB_CHIPIDEA_PCI USB_CHIPIDEA_UDC USB_CONFIGFS USB_CONFIGFS_ACM USB_CONFIGFS_ECM USB_CONFIGFS_ECM_SUBSET USB_CONFIGFS_EEM USB_CONFIGFS_F_FS USB_CONFIGFS_F_HID USB_CONFIGFS_F_LB_SS USB_CONFIGFS_F_MIDI USB_CONFIGFS_F_MIDI2 USB_CONFIGFS_F_PRINTER USB_CONFIGFS_F_TCM USB_CONFIGFS_F_UAC1 USB_CONFIGFS_F_UAC1_LEGACY USB_CONFIGFS_F_UAC2 USB_CONFIGFS_F_UVC USB_CONFIGFS_MASS_STORAGE USB_CONFIGFS_NCM USB_CONFIGFS_OBEX USB_CONFIGFS_PHONET USB_CONFIGFS_RNDIS USB_CONFIGFS_SERIAL USB_CONN_GPIO USB_CXACRU USB_CYPRESS_CY7C63 USB_CYTHERM USB_DSBR USB_DUMMY_HCD USB_DWC2 USB_DWC2_HOST USB_DWC2_PCI USB_DWC3 USB_DWC3_GADGET USB_DWC3_HAPS USB_DWC3_OF_SIMPLE USB_DWC3_PCI USB_DWC3_ULPI USB_DYNAMIC_MINORS USB_EG20T USB_EHCI_FSL USB_EHCI_HCD_PLATFORM USB_EHCI_ROOT_HUB_TT USB_EHSET_TEST_FIXTURE USB_EMI26 USB_EMI62 USB_EPSON2888 USB_EZUSB_FX2 USB_FEW_INIT_RETRIES USB_F_ACM USB_F_ECM USB_F_EEM USB_F_FS USB_F_HID USB_F_MASS_STORAGE USB_F_MIDI USB_F_MIDI2 USB_F_NCM USB_F_OBEX USB_F_PHONET USB_F_PRINTER USB_F_RNDIS USB_F_SERIAL USB_F_SS_LB USB_F_SUBSET USB_F_TCM USB_F_UAC1 USB_F_UAC1_LEGACY USB_F_UAC2 USB_F_UVC USB_GADGET USB_GADGETFS USB_GADGET_DEBUG_FILES USB_GADGET_DEBUG_FS USB_GL860 USB_GOKU USB_GR_UDC USB_GSPCA USB_GSPCA_BENQ USB_GSPCA_CONEX USB_GSPCA_CPIA1 USB_GSPCA_DTCS033 USB_GSPCA_ETOMS USB_GSPCA_FINEPIX USB_GSPCA_JEILINJ USB_GSPCA_JL2005BCD USB_GSPCA_KINECT USB_GSPCA_KONICA USB_GSPCA_MARS USB_GSPCA_MR97310A USB_GSPCA_NW80X USB_GSPCA_OV519 USB_GSPCA_OV534 USB_GSPCA_OV534_9 USB_GSPCA_PAC207 USB_GSPCA_PAC7302 USB_GSPCA_PAC7311 USB_GSPCA_SE401 USB_GSPCA_SN9C2028 USB_GSPCA_SN9C20X USB_GSPCA_SONIXB USB_GSPCA_SONIXJ USB_GSPCA_SPCA1528 USB_GSPCA_SPCA500 USB_GSPCA_SPCA501 USB_GSPCA_SPCA505 USB_GSPCA_SPCA506 USB_GSPCA_SPCA508 USB_GSPCA_SPCA561 USB_GSPCA_SQ905 USB_GSPCA_SQ905C USB_GSPCA_SQ930X USB_GSPCA_STK014 USB_GSPCA_STK1135 USB_GSPCA_STV0680 USB_GSPCA_SUNPLUS USB_GSPCA_T613 USB_GSPCA_TOPRO USB_GSPCA_TOUPTEK USB_GSPCA_TV8532 USB_GSPCA_VC032X USB_GSPCA_VICAM USB_GSPCA_XIRLINK_CIT USB_GSPCA_ZC3XX USB_HACKRF USB_HCD_BCMA USB_HCD_SSB USB_HSIC_USB3503 USB_HSIC_USB4604 USB_HSO USB_HUB_USB251XB USB_IDMOUSE USB_IOWARRIOR USB_IPHETH USB_ISIGHTFW USB_ISP116X_HCD USB_ISP1301 USB_ISP1760 USB_ISP1760_DUAL_ROLE USB_ISP1760_HCD USB_ISP1761_UDC USB_KAWETH USB_KC2190 USB_KEENE USB_LAN78XX USB_LCD USB_LD USB_LEDS_TRIGGER_USBPORT USB_LED_TRIG USB_LEGOTOWER USB_LGM_PHY USB_LIBCOMPOSITE USB_LINK_LAYER_TEST USB_M5602 USB_MA901 USB_MAX3420_UDC USB_MAX3421_HCD USB_MDC800 USB_MICROTEK USB_MR800 USB_MSI2500 USB_MUSB_DUAL_ROLE USB_MUSB_HDRC USB_MV_U3D USB_MV_UDC USB_NET2272 USB_NET2272_DMA USB_NET2280 USB_NET_AQC111 USB_NET_AX88179_178A USB_NET_AX8817X USB_NET_CDCETHER USB_NET_CDC_EEM USB_NET_CDC_MBIM USB_NET_CDC_NCM USB_NET_CDC_SUBSET USB_NET_CDC_SUBSET_ENABLE USB_NET_CH9200 USB_NET_CX82310_ETH USB_NET_DM9601 USB_NET_GL620A USB_NET_HUAWEI_CDC_NCM USB_NET_INT51X1 USB_NET_KALMIA USB_NET_MCS7830 USB_NET_NET1080 USB_NET_PLUSB USB_NET_QMI_WWAN USB_NET_RNDIS_HOST USB_NET_SMSC75XX USB_NET_SMSC95XX USB_NET_SR9700 USB_NET_SR9800 USB_NET_ZAURUS USB_OHCI_HCD_PLATFORM USB_OTG USB_OTG_FSM USB_OXU210HP_HCD USB_PEGASUS USB_PULSE8_CEC USB_PWC USB_PWC_INPUT_EVDEV USB_PXA27X USB_R8A66597 USB_R8A66597_HCD USB_RAINSHADOW_CEC USB_RAREMONO USB_RAW_GADGET USB_RTL8150 USB_RTL8152 USB_RTL8153_ECM USB_S2255 USB_SERIAL USB_SERIAL_AIRCABLE USB_SERIAL_ARK3116 USB_SERIAL_BELKIN USB_SERIAL_CH341 USB_SERIAL_CONSOLE USB_SERIAL_CP210X USB_SERIAL_CYBERJACK USB_SERIAL_CYPRESS_M8 USB_SERIAL_DEBUG USB_SERIAL_DIGI_ACCELEPORT USB_SERIAL_EDGEPORT USB_SERIAL_EDGEPORT_TI USB_SERIAL_EMPEG USB_SERIAL_F81232 USB_SERIAL_F8153X USB_SERIAL_FTDI_SIO USB_SERIAL_GARMIN USB_SERIAL_GENERIC USB_SERIAL_IPAQ USB_SERIAL_IPW USB_SERIAL_IR USB_SERIAL_IUU USB_SERIAL_KEYSPAN USB_SERIAL_KEYSPAN_PDA USB_SERIAL_KLSI USB_SERIAL_KOBIL_SCT USB_SERIAL_MCT_U232 USB_SERIAL_METRO USB_SERIAL_MOS7715_PARPORT USB_SERIAL_MOS7720 USB_SERIAL_MOS7840 USB_SERIAL_MXUPORT USB_SERIAL_NAVMAN USB_SERIAL_OMNINET USB_SERIAL_OPTICON USB_SERIAL_OPTION USB_SERIAL_OTI6858 USB_SERIAL_PL2303 USB_SERIAL_QCAUX USB_SERIAL_QT2 USB_SERIAL_QUALCOMM USB_SERIAL_SAFE USB_SERIAL_SIERRAWIRELESS USB_SERIAL_SIMPLE USB_SERIAL_SPCP8X5 USB_SERIAL_SSU100 USB_SERIAL_SYMBOL USB_SERIAL_TI USB_SERIAL_UPD78F0730 USB_SERIAL_VISOR USB_SERIAL_WHITEHEAT USB_SERIAL_WISHBONE USB_SERIAL_WWAN USB_SERIAL_XR USB_SERIAL_XSENS_MT USB_SEVSEG USB_SI470X USB_SI4713 USB_SIERRA_NET USB_SISUSBVGA USB_SL811_CS USB_SL811_HCD USB_SL811_HCD_ISO USB_SNP_CORE USB_SPEEDTOUCH USB_STORAGE_ALAUDA USB_STORAGE_CYPRESS_ATACB USB_STORAGE_DATAFAB USB_STORAGE_ENE_UB6250 USB_STORAGE_FREECOM USB_STORAGE_ISD200 USB_STORAGE_JUMPSHOT USB_STORAGE_KARMA USB_STORAGE_ONETOUCH USB_STORAGE_SDDR09 USB_STORAGE_SDDR55 USB_STORAGE_USBAT USB_STV06XX USB_TEST USB_TMC USB_TRANCEVIBRATOR USB_UAS USB_UEAGLEATM USB_ULPI_BUS USB_USBNET USB_USS720 USB_U_AUDIO USB_U_ETHER USB_U_SERIAL USB_VIDEO_CLASS USB_VIDEO_CLASS_INPUT_EVDEV USB_VL600 USB_WDM USB_XHCI_DBGCAP USB_XHCI_PCI_RENESAS USB_XHCI_PLATFORM USB_XUSBATM USB_YUREX USERFAULTFD USERIO USERMODE_DRIVER USER_RETURN_NOTIFIER UVC_COMMON U_SERIAL_CONSOLE V4L2_MEM2MEM_DEV V4L_TEST_DRIVERS VALIDATE_FS_PARSER VDPA VDPA_SIM VDPA_SIM_BLOCK VDPA_SIM_NET VDPA_USER VETH VFIO VFIO_DEVICE_CDEV VFIO_PCI VFIO_PCI_CORE VFIO_PCI_INTX VFIO_PCI_MMAP VFIO_VIRQFD VGASTATE VHOST VHOST_CROSS_ENDIAN_LEGACY VHOST_IOTLB VHOST_NET VHOST_RING VHOST_TASK VHOST_VDPA VHOST_VSOCK VIDEO VIDEOBUF2_CORE VIDEOBUF2_DMA_CONTIG VIDEOBUF2_DMA_SG VIDEOBUF2_MEMOPS VIDEOBUF2_V4L2 VIDEOBUF2_VMALLOC VIDEOMODE_HELPERS VIDEO_AU0828 VIDEO_AU0828_RC VIDEO_AU0828_V4L2 VIDEO_CS53L32A VIDEO_CX231XX VIDEO_CX231XX_ALSA VIDEO_CX231XX_DVB VIDEO_CX231XX_RC VIDEO_CX2341X VIDEO_CX25840 VIDEO_DEV VIDEO_EM28XX VIDEO_EM28XX_ALSA VIDEO_EM28XX_DVB VIDEO_EM28XX_RC VIDEO_EM28XX_V4L2 VIDEO_GO7007 VIDEO_GO7007_LOADER VIDEO_GO7007_USB VIDEO_GO7007_USB_S2250_BOARD VIDEO_HDPVR VIDEO_MSP3400 VIDEO_PVRUSB2 VIDEO_PVRUSB2_DVB VIDEO_PVRUSB2_SYSFS VIDEO_SAA711X VIDEO_STK1160 VIDEO_TUNER VIDEO_TVEEPROM VIDEO_USBTV VIDEO_V4L2_I2C VIDEO_V4L2_SUBDEV_API VIDEO_V4L2_TPG VIDEO_VICODEC VIDEO_VIM2M VIDEO_VIMC VIDEO_VIVID VIDEO_VIVID_CEC VIDEO_WM8775 VIPERBOARD_ADC VIRTIO_BALLOON VIRTIO_DMA_SHARED_BUFFER VIRTIO_MEM VIRTIO_MMIO VIRTIO_MMIO_CMDLINE_DEVICES VIRTIO_PMEM VIRTIO_VDPA VIRTIO_VSOCKETS VIRTIO_VSOCKETS_COMMON VIRT_WIFI VLAN_8021Q VLAN_8021Q_GVRP VLAN_8021Q_MVRP VMAP_PFN VMWARE_VMCI VMXNET3 VP_VDPA VSOCKETS VSOCKETS_DIAG VSOCKETS_LOOPBACK VSOCKMON VT_HW_CONSOLE_BINDING VXFS_FS WANT_DEV_COREDUMP WEXT_CORE WEXT_PRIV WEXT_PROC WIREGUARD WIRELESS WIRELESS_EXT WLAN WLAN_VENDOR_ADMTEK WLAN_VENDOR_SILABS X86_CMPXCHG64 X86_INTEL_USERCOPY X86_P6_NOP X86_SGX X86_SGX_KVM X86_USER_SHADOW_STACK X86_USE_PPRO_CHECKSUM X86_X32_ABI XDP_SOCKETS XDP_SOCKETS_DIAG XFRM_ESPINTCP XFRM_INTERFACE XFRM_IPCOMP XFRM_MIGRATE XFRM_OFFLOAD XFRM_STATISTICS XFRM_SUB_POLICY XFRM_USER_COMPAT XFS_FS XFS_POSIX_ACL XFS_QUOTA XFS_RT XILLYBUS_CLASS XILLYUSB XOR_BLOCKS YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZEROPLUS_FF ZLIB_DEFLATE ZONEFS_FS ZPOOL ZRAM ZRAM_DEF_COMP_LZORLE ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_LZO ZSWAP_DEFAULT_ON ZSWAP_SHRINKER_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZSMALLOC]
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing current HEAD 119009db267415049182774196e3cce9e13b52ef
testing commit 119009db267415049182774196e3cce9e13b52ef gcc
compiler: Debian clang version 15.0.6, Debian LLD 15.0.6
kernel signature: 0510a0a6b1c6da875138b5de8cdb0768847b412aec9773bdd0bbc1b177615acf
all runs: crashed: INFO: task hung in xfs_buf_item_unpin
representative crash: INFO: task hung in xfs_buf_item_unpin, types: [HANG]
crash still not fixed/happens on the oldest tested release
revisions tested: 8, total time: 1h55m29.523257628s (build: 53m35.914442422s, test: 56m28.324491208s)
crash still not fixed or there were kernel test errors
commit msg: Merge tag 'vfs-6.15-rc3.fixes.2' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
crash: INFO: task hung in xfs_buf_item_unpin
INFO: task kworker/0:1H:1126 blocked for more than 143 seconds.
Not tainted 6.15.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:1H state:D stack:14256 pid:1126 tgid:1126 ppid:2 task_flags:0x4208060 flags:0x00004000
Workqueue: xfs-log/loop0 xlog_ioend_work
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x794/0xcd0 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0xac/0x140 kernel/sched/core.c:6860
schedule_timeout+0x8a/0x160 kernel/time/sleep_timeout.c:75
___down_common kernel/locking/semaphore.c:229 [inline]
__down_common+0xf3/0x240 kernel/locking/semaphore.c:250
down+0x3c/0x40 kernel/locking/semaphore.c:64
xfs_buf_lock+0x4f/0x120 fs/xfs/xfs_buf.c:996
xfs_buf_item_unpin+0x85/0x1d0 fs/xfs/xfs_buf_item.c:468
xlog_cil_ail_insert fs/xfs/xfs_log_cil.c:823 [inline]
xlog_cil_committed+0x24d/0x4a0 fs/xfs/xfs_log_cil.c:904
xlog_cil_process_committed+0x5c/0x80 fs/xfs/xfs_log_cil.c:934
xlog_state_shutdown_callbacks+0x50/0x120 fs/xfs/xfs_log.c:488
xlog_force_shutdown+0x145/0x180 fs/xfs/xfs_log.c:3540
xlog_ioend_work+0x43/0x70 fs/xfs/xfs_log.c:1245
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0x2db/0x620 kernel/workqueue.c:3319
worker_thread+0x206/0x2f0 kernel/workqueue.c:3400
kthread+0x1fb/0x230 kernel/kthread.c:464
ret_from_fork+0x32/0x40 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
INFO: task syz.0.15:3325 blocked for more than 143 seconds.
Not tainted 6.15.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.15 state:D stack:12752 pid:3325 tgid:3324 ppid:3097 task_flags:0x400140 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x794/0xcd0 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0xac/0x140 kernel/sched/core.c:6860
xlog_wait fs/xfs/xfs_log_priv.h:588 [inline]
xlog_wait_on_iclog+0x14d/0x1d0 fs/xfs/xfs_log.c:841
xlog_force_lsn+0x25f/0x290 fs/xfs/xfs_log.c:3065
xfs_log_force_seq+0xab/0x180 fs/xfs/xfs_log.c:3102
__xfs_trans_commit+0x27d/0x320 fs/xfs/xfs_trans.c:905
xfs_trans_commit+0x4c/0x70 fs/xfs/xfs_trans.c:954
xfs_sync_sb_buf+0x9e/0x110 fs/xfs/libxfs/xfs_sb.c:1474
xfs_ioc_setlabel fs/xfs/xfs_ioctl.c:1046 [inline]
xfs_file_ioctl+0x61e/0xdb0 fs/xfs/xfs_ioctl.c:1203
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:906 [inline]
__se_sys_ioctl+0x68/0xb0 fs/ioctl.c:892
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x8d/0x170 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2b36ad9e79
RSP: 002b:00007f2b3655f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f2b36c75f80 RCX: 00007f2b36ad9e79
RDX: 0000000020000340 RSI: 0000000041009432 RDI: 0000000000000006
RBP: 00007f2b36b47916 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f2b36c75f80 R15: 00007ffe69a10bf8
Showing all locks held in the system:
1 lock held by khungtaskd/31:
#0: ffffffff8358f9a8 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8358f9a8 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8358f9a8 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x30/0x100 kernel/locking/lockdep.c:6764
2 locks held by kworker/0:1H/1126:
#0: ffff88811c296148 ((wq_completion)xfs-log/loop0){....}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88811c296148 ((wq_completion)xfs-log/loop0){....}-{0:0}, at: process_scheduled_works+0x276/0x620 kernel/workqueue.c:3319
#1: ffffc9000544be48 ((work_completion)(&iclog->ic_end_io_work)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc9000544be48 ((work_completion)(&iclog->ic_end_io_work)){....}-{0:0}, at: process_scheduled_works+0x296/0x620 kernel/workqueue.c:3319
2 locks held by getty/2191:
#0: ffff888103a8e8a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x20/0x40 drivers/tty/tty_ldisc.c:243
#1: ffffc90006aef2f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x1d3/0x710 drivers/tty/n_tty.c:2222
1 lock held by syz.0.15/3325:
#0: ffff8881125c93f8 (sb_writers#11){....}-{0:0}, at: xfs_ioc_setlabel fs/xfs/xfs_ioctl.c:1028 [inline]
#0: ffff8881125c93f8 (sb_writers#11){....}-{0:0}, at: xfs_file_ioctl+0x5cb/0xdb0 fs/xfs/xfs_ioctl.c:1203
1 lock held by syz-executor/4837:
#0: ffffffff83590878 (rcu_state.exp_mutex){....}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:304 [inline]
#0: ffffffff83590878 (rcu_state.exp_mutex){....}-{3:3}, at: synchronize_rcu_expedited+0x2c8/0x5c0 kernel/rcu/tree_exp.h:998
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.15.0-rc2-syzkaller #0 PREEMPT(undef)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x42/0xe0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x147/0x160 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x8e/0x140 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:274 [inline]
watchdog+0x602/0x630 kernel/hung_task.c:437
kthread+0x1fb/0x230 kernel/kthread.c:464
ret_from_fork+0x32/0x40 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5955 Comm: syz.0.1028 Not tainted 6.15.0-rc2-syzkaller #0 PREEMPT(undef)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0033:0x7fe0b71edc9b
Code: cd 48 01 c1 49 39 4f 08 72 4c 8d 4d ff 85 ed 74 33 66 0f 1f 44 00 00 48 39 f0 72 1b 4d 8b 07 49 89 c1 49 29 f1 47 0f b6 0c 08 <45> 84 c9 74 08 45 88 0c 00 49 8b 47 10 48 83 c0 01 49 89 47 10 83
RSP: 002b:00007fe0b6dae4a0 EFLAGS: 00000216
RAX: 0000000000ded4b0 RBX: 00007fe0b6dae540 RCX: 0000000000000053
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00007fe0b6dae5e0
RBP: 0000000000000102 R08: 00007fe0ae98f000 R09: 0000000000000000
R10: 0000000000000000 R11: 00007fe0b6dae550 R12: 0000000000000001
R13: 00007fe0b73ab840 R14: 0000000000000000 R15: 00007fe0b6dae5e0
FS: 00007fe0b6daf6c0 GS: 0000000000000000