ci2 starts bisection 2023-10-18 13:31:11.261868192 +0000 UTC m=+155863.235650638
bisecting fixing commit since 09045dae0d902f9f78901a26c7ff1714976a38f9
building syzkaller on fbf0499acc828df26995835e51d83c3a0117e716
ensuring issue is reproducible on original commit 09045dae0d902f9f78901a26c7ff1714976a38f9
testing commit 09045dae0d902f9f78901a26c7ff1714976a38f9 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 950b477899bee5e0eb45171fffb41751d31838771c116eceb8ee73f4e908bfe9
all runs: crashed: INFO: task hung in sync_inodes_sb
representative crash: INFO: task hung in sync_inodes_sb, 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 09045dae0d902f9f78901a26c7ff1714976a38f9 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: ba128ef286c372497e0fa61de85be2e120042a6273cbd61ad63c215fac9762f8
all runs: crashed: INFO: task hung in sync_inodes_sb
representative crash: INFO: task hung in sync_inodes_sb, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
kconfig minimization: base=3820 full=7521 leaves diff=1987
split chunks (needed=false): <1987>
split chunk #0 of len 1987 into 5 parts
testing without sub-chunk 1/5
disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed
testing commit 09045dae0d902f9f78901a26c7ff1714976a38f9 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 61654f0b7415fdbe7df1720d9463254c239a7e0ed1d1b2ed61e6ae87b7ffaf2f
all runs: crashed: INFO: task hung in sync_inodes_sb
representative crash: INFO: task hung in sync_inodes_sb, types: [HANG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed
testing commit 09045dae0d902f9f78901a26c7ff1714976a38f9 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b0cf77b431ee45b379314b97185cada056f4b3410cfa3f0e9e2258b0ae6a7424
all runs: crashed: INFO: task hung in sync_inodes_sb
representative crash: INFO: task hung in sync_inodes_sb, 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 09045dae0d902f9f78901a26c7ff1714976a38f9 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: fdcd3c01d713469212ea2fac0f5c3afaf4f29dc2478d77b7f7476eff3ec82af3
all runs: crashed: INFO: task hung in sync_inodes_sb
representative crash: INFO: task hung in sync_inodes_sb, types: [HANG]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 09045dae0d902f9f78901a26c7ff1714976a38f9 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 7355b8b10cec70a205c5b15505cf7a81f6e24d0728679f7e9ae16317ddb33792
all runs: crashed: INFO: task hung in sync_inodes_sb
representative crash: INFO: task hung in sync_inodes_sb, 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 09045dae0d902f9f78901a26c7ff1714976a38f9 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 8510d3b1e48c846f9bc94bb785286686cefa7ff128c0a1a611d05799bb185de7
all runs: OK
false negative chance: 0.000
minimized to 395 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_LZO CRYPTO_ZSTD DVB_CORE EXTCON FB GPIOLIB HID_ZEROPLUS I2C_MUX IIO 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 PARPORT PCCARD PCMCIA PHONET RADIO_ADAPTERS RADIO_SI470X RADIO_SI4713 RC_CORE RFKILL SND SOUND SPI SSB TAP TUN USB_AMD5536UDC USB_ATM USB_CONFIGFS 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_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_OF_SIMPLE USB_DWC3_PCI USB_DWC3_ULPI USB_DYNAMIC_MINORS USB_EG20T 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_FOTG210_HCD USB_FOTG210_UDC USB_FTDI_ELAN USB_F_ACM USB_F_ECM USB_F_EEM USB_F_FS USB_F_HID USB_F_MASS_STORAGE USB_F_MIDI 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_GPIO_VBUS 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_LIBCOMPOSITE USB_LINK_LAYER_TEST USB_M5602 USB_MA901 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_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_RNDIS_WLAN 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_U132_HCD 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_PLATFORM USB_XUSBATM USB_YUREX USERFAULTFD USERIO USERMODE_DRIVER USER_RETURN_NOTIFIER 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_IOMMU_TYPE1 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_VDPA VHOST_VSOCK 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_STK1160_COMMON 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_PURELIFI WLAN_VENDOR_SILABS X86_SGX X86_SGX_KVM X86_X2APIC X86_X32_ABI XARRAY_MULTI 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 XFS_SUPPORT_V4 XOR_BLOCKS YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZBUD ZEROPLUS_FF ZLIB_DEFLATE ZONEFS_FS ZPOOL ZRAM ZRAM_DEF_COMP_LZORLE ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_LZO ZSWAP_ZPOOL_DEFAULT_ZBUD]
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
determining the merge base between 09045dae0d902f9f78901a26c7ff1714976a38f9 and 06dc10eae55b5ceabfef287a7e5f16ceea204aa0
830b3c68c1fb1e9176028d02ef86f3cf76aa2476/Linux 6.1 is a merge base, check if it has the bug
testing commit 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 58daaf71aa16db7d347a03c32ccbe44e394b0fcd17dd9743dd839a096a76d4f1
all runs: crashed: INFO: task hung in sync_inodes_sb
representative crash: INFO: task hung in sync_inodes_sb, types: [HANG]
testing current HEAD 06dc10eae55b5ceabfef287a7e5f16ceea204aa0
testing commit 06dc10eae55b5ceabfef287a7e5f16ceea204aa0 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 46d2c0fcad6d3aa2b99cead4f915c41825a28e87ed126b759e8339659ab19b77
all runs: crashed: INFO: task hung in sync_inodes_sb
representative crash: INFO: task hung in sync_inodes_sb, types: [HANG]
crash still not fixed/happens on the oldest tested release
revisions tested: 9, total time: 1h27m44.124009122s (build: 29m44.293587604s, test: 54m58.571183553s)
crash still not fixed or there were kernel test errors
commit msg: Merge tag 'fbdev-for-6.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev
crash: INFO: task hung in sync_inodes_sb
INFO: task syz-executor.0:2568 blocked for more than 143 seconds.
Not tainted 6.6.0-rc6-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:11000 pid:2568 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x6ae/0x990 kernel/sched/core.c:6695
schedule+0x50/0xb0 kernel/sched/core.c:6771
wb_wait_for_completion+0x7c/0xc0 fs/fs-writeback.c:192
sync_inodes_sb+0xd9/0x310 fs/fs-writeback.c:2741
sync_filesystem+0x4c/0x80 fs/sync.c:64
generic_shutdown_super+0x21/0x100 fs/super.c:666
kill_block_super+0x12/0x40 fs/super.c:1646
xfs_kill_sb+0x9/0x20 fs/xfs/xfs_super.c:2026
deactivate_locked_super+0x2c/0x110 fs/super.c:481
cleanup_mnt+0xe2/0x120 fs/namespace.c:1254
task_work_run+0x79/0xa0 kernel/task_work.c:180
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xa9/0xc0 kernel/entry/common.c:171
exit_to_user_mode_prepare+0x6c/0xc0 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x27/0x1c0 kernel/entry/common.c:296
do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f1e519cfc07
RSP: 002b:00007ffc4b009938 EFLAGS: 00000246
ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f1e519cfc07
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffc4b0099f0
RBP: 00007ffc4b0099f0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc4b00aab0
R13: 00007f1e51a29af2 R14: 000000000000afa1 R15: 0000000000000003
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff82f86e80
(
rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:749 [inline]
rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x2c/0x100 kernel/locking/lockdep.c:6613
2 locks held by kworker/u4:7/1422:
4 locks held by kworker/u4:9/1683:
#0: ffff888103a7c738 ((wq_completion)writeback
){....}-{0:0}
, at: process_one_work kernel/workqueue.c:2605 [inline]
, at: process_scheduled_works+0x1f2/0x4c0 kernel/workqueue.c:2703
#1:
ffffc900066a7e58
((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_scheduled_works+0x1f2/0x4c0 kernel/workqueue.c:2703
#2: ffff8881056e75d8 (sb_internal
#2
){....}-{0:0}
, at: xfs_bmapi_convert_delalloc+0xb6/0x540 fs/xfs/libxfs/xfs_bmap.c:4527
#3:
ffff8881175b0118 (&xfs_nondir_ilock_class#3){....}-{3:3}, at: xfs_bmapi_convert_delalloc+0xca/0x540 fs/xfs/libxfs/xfs_bmap.c:4532
2 locks held by getty/2169:
#0: ffff8881114f80a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x1c/0x40 drivers/tty/tty_ldisc.c:243
#1:
ffffc90006f0b2f0
(&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x214/0x8e0 drivers/tty/n_tty.c:2206
4 locks held by kworker/0:3/2341:
2 locks held by syz-executor.0/2568:
#0: ffff8881056e70e0 (&type->s_umount_key
#45){....}-{3:3}
, at: __super_lock fs/super.c:56 [inline]
, at: __super_lock_excl fs/super.c:71 [inline]
, at: deactivate_super+0x27/0x30 fs/super.c:513
#1: ffff8881000dd7d0 (&bdi->wb_switch_rwsem){....}-{3:3}
, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:364 [inline]
, at: sync_inodes_sb+0xc0/0x310 fs/fs-writeback.c:2739
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x7f/0xd0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x13e/0x160 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x8a/0x120 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0x5d2/0x600 kernel/hung_task.c:379
kthread+0xe1/0xf0 kernel/kthread.c:388
ret_from_fork+0x2a/0x40 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 1422 Comm: kworker/u4:7 Not tainted 6.6.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:207 [inline]
RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:147 [inline]
RIP: 0010:wrmsrl arch/x86/include/asm/msr.h:262 [inline]
RIP: 0010:native_x2apic_icr_write arch/x86/include/asm/apic.h:216 [inline]
RIP: 0010:__x2apic_send_IPI_dest arch/x86/kernel/apic/x2apic_phys.c:113 [inline]
RIP: 0010:x2apic_send_IPI+0x2a/0x50 arch/x86/kernel/apic/x2apic_phys.c:50
Code: 48 63 c7 48 8b 04 c5 c0 c8 cc 82 0f b7 90 c8 59 01 00 0f ae f0 0f ae e8 83 fe 02 b8 00 04 00 00 0f 45 c6 b9 30 08 00 00 0f 30 <66> 90 c3 89 c0 48 c1 e2 20 48 09 c2 bf 30 08 00 00 48 89 d6 31 d2
RSP: 0018:ffffc9000596fc38 EFLAGS: 00000206
RAX: 00000000000000fb RBX: 0000000000000001 RCX: 0000000000000830
RDX: 0000000000000001 RSI: 00000000000000fb RDI: 0000000000000001
RBP: ffffffff810c4fe0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff810c4fe0
R13: ffff888237d33580 R14: 0000000000000000 R15: ffff888237c2ee80
FS: 0000000000000000(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff33d17a318 CR3: 0000000002e56000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_send_call_function_single_ipi arch/x86/include/asm/smp.h:103 [inline]
send_call_function_single_ipi kernel/smp.c:117 [inline]
smp_call_function_many_cond+0x53b/0xa30 kernel/smp.c:826
on_each_cpu_cond_mask+0x36/0x60 kernel/smp.c:1012
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:2006 [inline]
text_poke_bp_batch+0x21c/0x300 arch/x86/kernel/alternative.c:2278
text_poke_flush arch/x86/kernel/alternative.c:2407 [inline]
text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:2414
arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
static_key_disable_cpuslocked kernel/jump_label.c:235 [inline]
static_key_disable+0x3b/0x60 kernel/jump_label.c:243
toggle_allocation_gate+0xde/0x130 mm/kfence/core.c:835
process_one_work kernel/workqueue.c:2630 [inline]
process_scheduled_works+0x24c/0x4c0 kernel/workqueue.c:2703
worker_thread+0x239/0x2f0 kernel/workqueue.c:2784
kthread+0xe1/0xf0 kernel/kthread.c:388
ret_from_fork+0x2a/0x40 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304