ci2 starts bisection 2025-02-07 17:52:11.27615982 +0000 UTC m=+39276.748364181
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, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: f6fe52aea51d2153f25e4306c07a106f0da7318fe53dceaa1537ae964e3a94da
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 [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed
testing commit 85652baa895b59b94bea29c77cb9b51cf7120deb gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: e262f147423a932697cdc4c3a43fe6113d1eea7fe462319514eb9384b4bf9749
run #0: crashed: INFO: task hung in xfs_buf_item_unpin
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: ignore: lost connection to test machine
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 xfs_buf_item_unpin, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
kconfig minimization: base=4055 full=8129 leaves diff=2118
split chunks (needed=false): <2118>
split chunk #0 of len 2118 into 5 parts
testing without sub-chunk 1/5
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, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b4c2872ddbd2758509650bc8e5cc84635b35f5de0baf95e03a5fcdcb39db0d36
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 [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
testing commit 85652baa895b59b94bea29c77cb9b51cf7120deb gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: e6c15631caa7911d0d6ccc46609be4349dbc7e217d3ce726d278553ef887173d
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 [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 85652baa895b59b94bea29c77cb9b51cf7120deb gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 3dd5f540d57ce03fe7055eb9b736ac80382983fd71ff322b5b3e2cdf1cbe9536
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 [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
testing commit 85652baa895b59b94bea29c77cb9b51cf7120deb gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 22c08a216f3a674ab242c0d0af1f651b4a6659b7f267745a3065039c7b502f40
run #0: ignore: lost connection to test machine
run #1: ignore: lost connection to test machine
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 xfs_buf_item_unpin, 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 85652baa895b59b94bea29c77cb9b51cf7120deb gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b6ad5a242748ba3c602db5c1915f8c0ad430e04f3264d66256124617faca7042
run #0: ignore: lost connection to test machine
run #1: ignore: lost connection to test machine
run #2: OK
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
false negative chance: 0.000
minimized to 422 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 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_CDNSP_GADGET USB_CDNSP_HOST USB_CDNSP_PCI USB_CDNS_HOST USB_CDNS_SUPPORT 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_SGX X86_SGX_KVM X86_USER_SHADOW_STACK X86_X2APIC 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 bb066fe812d6fb3a9d01c073d9f1e2fd5a63403b
testing commit bb066fe812d6fb3a9d01c073d9f1e2fd5a63403b gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: fc1fc2661b26508618f730ae2428bb1b570df2dc0095e58ee94d9e5bb2b5b90c
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: 1h34m56.879582055s (build: 34m56.005793205s, test: 56m9.03665363s)
crash still not fixed or there were kernel test errors
commit msg: Merge tag 'pci-v6.14-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
crash: INFO: task hung in xfs_buf_item_unpin
INFO: task kworker/0:1H:41 blocked for more than 143 seconds.
Not tainted 6.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:1H state:D stack:14392 pid:41 tgid:41 ppid:2 task_flags:0x4208060 flags:0x00004000
Workqueue: xfs-log/loop0 xlog_ioend_work
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0x714/0xad0 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0xac/0x140 kernel/sched/core.c:6856
schedule_timeout+0x88/0x160 kernel/time/sleep_timeout.c:75
___down_common kernel/locking/semaphore.c:225 [inline]
__down_common+0xef/0x230 kernel/locking/semaphore.c:246
down+0x3c/0x40 kernel/locking/semaphore.c:63
xfs_buf_lock+0x4f/0x120 fs/xfs/xfs_buf.c:1190
xfs_buf_item_unpin+0x85/0x1d0 fs/xfs/xfs_buf_item.c:582
xlog_cil_ail_insert fs/xfs/xfs_log_cil.c:823 [inline]
xlog_cil_committed+0x24b/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+0x4b/0x110 fs/xfs/xfs_log.c:487
xlog_force_shutdown+0x144/0x170 fs/xfs/xfs_log.c:3539
xlog_ioend_work+0x43/0x70 fs/xfs/xfs_log.c:1244
process_one_work kernel/workqueue.c:3236 [inline]
process_scheduled_works+0x2ab/0x5c0 kernel/workqueue.c:3317
worker_thread+0x23e/0x2e0 kernel/workqueue.c:3398
kthread+0x1f6/0x210 kernel/kthread.c:464
ret_from_fork+0x32/0x40 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task syz.0.15:3329 blocked for more than 143 seconds.
Not tainted 6.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.15 state:D stack:12896 pid:3329 tgid:3328 ppid:3102 task_flags:0x400140 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0x714/0xad0 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0xac/0x140 kernel/sched/core.c:6856
xlog_wait fs/xfs/xfs_log_priv.h:588 [inline]
xlog_wait_on_iclog+0x14f/0x1c0 fs/xfs/xfs_log.c:840
xlog_force_lsn+0x24e/0x260 fs/xfs/xfs_log.c:3064
xfs_log_force_seq+0xab/0x180 fs/xfs/xfs_log.c:3101
__xfs_trans_commit+0x279/0x320 fs/xfs/xfs_trans.c:905
xfs_trans_commit+0x48/0x70 fs/xfs/xfs_trans.c:954
xfs_sync_sb_buf+0x9a/0x110 fs/xfs/libxfs/xfs_sb.c:1413
xfs_ioc_setlabel fs/xfs/xfs_ioctl.c:1046 [inline]
xfs_file_ioctl+0x618/0xd70 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/common.c:52 [inline]
do_syscall_64+0x8d/0x190 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f01103e9e79
RSP: 002b:00007f010fe6f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f0110585f80 RCX: 00007f01103e9e79
RDX: 0000000020000340 RSI: 0000000041009432 RDI: 0000000000000006
RBP: 00007f0110457916 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0110585f80 R15: 00007fff45d36c88
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8358b558 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8358b558 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8358b558 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x30/0x100 kernel/locking/lockdep.c:6746
2 locks held by kworker/0:1H/41:
#0: ffff8881184e3748 ((wq_completion)xfs-log/loop0){....}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline]
#0: ffff8881184e3748 ((wq_completion)xfs-log/loop0){....}-{0:0}, at: process_scheduled_works+0x246/0x5c0 kernel/workqueue.c:3317
#1: ffffc90000163e48 ((work_completion)(&iclog->ic_end_io_work)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline]
#1: ffffc90000163e48 ((work_completion)(&iclog->ic_end_io_work)){....}-{0:0}, at: process_scheduled_works+0x266/0x5c0 kernel/workqueue.c:3317
2 locks held by getty/2195:
#0: ffff88810bfb68a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x20/0x40 drivers/tty/tty_ldisc.c:243
#1: ffffc90006cc72f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x23d/0x910 drivers/tty/n_tty.c:2211
1 lock held by syz.0.15/3329:
#0: ffff8881133413f8 (sb_writers#12){....}-{0:0}, at: xfs_ioc_setlabel fs/xfs/xfs_ioctl.c:1028 [inline]
#0: ffff8881133413f8 (sb_writers#12){....}-{0:0}, at: xfs_file_ioctl+0x5b6/0xd70 fs/xfs/xfs_ioctl.c:1203
1 lock held by syz-executor/4932:
#0: ffffffff8358c438 (rcu_state.exp_mutex){....}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:302 [inline]
#0: ffffffff8358c438 (rcu_state.exp_mutex){....}-{3:3}, at: synchronize_rcu_expedited+0x2c2/0x5d0 kernel/rcu/tree_exp.h:996
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.14.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
__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:236 [inline]
watchdog+0x602/0x630 kernel/hung_task.c:399
kthread+0x1f6/0x210 kernel/kthread.c:464
ret_from_fork+0x32/0x40 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6370 Comm: syz.0.1153 Not tainted 6.14.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0033:0x7fbee6fedc90
Code: 49 8b 47 10 48 39 f0 72 6e 48 63 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
RSP: 002b:00007fbee6bae4a0 EFLAGS: 00000212
RAX: 0000000000e9ab80 RBX: 00007fbee6bae540 RCX: 0000000000000005
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00007fbee6bae5e0
RBP: 0000000000000102 R08: 00007fbede78f000 R09: 0000000000000000
R10: 0000000000000000 R11: 00007fbee6bae550 R12: 0000000000000001
R13: 00007fbee71ab840 R14: 0000000000000000 R15: 00007fbee6bae5e0
FS: 00007fbee6baf6c0 GS: 0000000000000000