ci2 starts bisection 2025-05-21 19:51:12.497839681 +0000 UTC m=+29527.728413888
bisecting fixing commit since 0c935c049b5c196b83b968c72d348ae6fff83ea2
building syzkaller on d7ae3a111bd75df44dda69b37da945b50d5133e2
ensuring issue is reproducible on original commit 0c935c049b5c196b83b968c72d348ae6fff83ea2

testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 3fee70781df1fb053d6ce69ffd59c520ba8a77f8ca35d5ac82ca475d92cb4b87
all runs: crashed: WARNING in xfs_bmapi_convert_delalloc
representative crash: WARNING in xfs_bmapi_convert_delalloc, types: [WARNING]
check whether we can drop unnecessary instrumentation
disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 296648346d8b35192f3ef3897596712fdef718d9ee637c11f9d8ea6d8f3c237b
all runs: crashed: WARNING in xfs_bmapi_convert_delalloc
representative crash: WARNING in xfs_bmapi_convert_delalloc, types: [WARNING]
the bug reproduces without the instrumentation
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed
kconfig minimization: base=3707 full=7306 leaves diff=2041
split chunks (needed=false): <2041>
split chunk #0 of len 2041 into 5 parts
testing without sub-chunk 1/5
disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b1c469fc8ac9a93663804b447a80842bff78b2537c6f444c4c46ced805774682
all runs: crashed: WARNING in xfs_bmapi_convert_delalloc
representative crash: WARNING in xfs_bmapi_convert_delalloc, types: [WARNING]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed
testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: cff5fa7c0364cf8e0e9304fc7a7ac75df2c150eb5438ea2d6a9ce9db123b5504
all runs: crashed: WARNING in xfs_bmapi_convert_delalloc
representative crash: WARNING in xfs_bmapi_convert_delalloc, types: [WARNING]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed
testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: bfcc51499597ba6473efe460bce1c19ea2f12fb5e84f4ff3644f62ff402b5395
all runs: crashed: WARNING in xfs_bmapi_convert_delalloc
representative crash: WARNING in xfs_bmapi_convert_delalloc, types: [WARNING]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN KASAN LOCKDEP], they are not needed
testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 88f91f34382f58a140da3b9bc0f0b6a7d49cba49a52b35d6d24d5b90544f7937
all runs: crashed: WARNING in xfs_bmapi_convert_delalloc
representative crash: WARNING in xfs_bmapi_convert_delalloc, types: [WARNING]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed
testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 0572819545a456d518d531e8c31723cc27a2c70b02fbfb96d69b7d0926d47fb8
all runs: OK
false negative chance: 0.000
minimized to 405 configs; suspects: [ARCH_ENABLE_MEMORY_HOTREMOVE ATM BCMA BLK_DEV_ZONED BPF_SYSCALL CARDBUS CFG80211 CFG80211_WEXT CMA CONTIG_ALLOC CRYPTO_842 CRYPTO_LZ4 CRYPTO_LZ4HC CRYPTO_LZO CRYPTO_ZSTD DVB_CORE EXTCON FB FRONTSWAP GPIOLIB HID_ZEROPLUS I2C_MUX IIO IRQ_REMAP 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_HOTPLUG_SPARSE MEMORY_HOTREMOVE MFD_VIPERBOARD 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_CONFIGFS 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_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 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USB_SL811_HCD USB_SL811_HCD_ISO USB_SNP_CORE USB_SPEEDTOUCH USB_STKWEBCAM 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_PCI_RENESAS USB_XHCI_PLATFORM USB_XUSBATM USB_YUREX USB_ZR364XX USERFAULTFD USERIO USERMODE_DRIVER USER_RETURN_NOTIFIER U_SERIAL_CONSOLE V4L2_MEM2MEM_DEV V4L_TEST_DRIVERS VALIDATE_FS_PARSER VDPA 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 VIDEOBUF_GEN VIDEOBUF_VMALLOC VIDEO_AU0828 VIDEO_AU0828_RC VIDEO_AU0828_V4L2 VIDEO_CPIA2 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_TM6000 VIDEO_TM6000_ALSA VIDEO_TM6000_DVB VIDEO_TUNER VIDEO_TVEEPROM VIDEO_USBTV VIDEO_V4L2 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 X86_SGX X86_X2APIC X86_X32 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 XILLYBUS_CLASS XILLYUSB XOR_BLOCKS YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZBUD ZEROPLUS_FF ZONEFS_FS ZPOOL ZRAM ZRAM_DEF_COMP_LZORLE ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_LZO ZSWAP_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZBUD]
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed
testing current HEAD a68c151521315aaa84244b916e6ea01017d5370f
testing commit a68c151521315aaa84244b916e6ea01017d5370f gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 1be0d7d5508102fdb3ac768e31977a305c5f74c5c023a3665ffc893a4d7741fa
all runs: crashed: WARNING in xfs_bmapi_convert_delalloc
representative crash: WARNING in xfs_bmapi_convert_delalloc, types: [WARNING]
crash still not fixed/happens on the oldest tested release
revisions tested: 8, total time: 1h44m15.562571801s (build: 46m31.326073426s, test: 54m56.674995627s)
crash still not fixed or there were kernel test errors
commit msg: Linux 5.15.183
crash: WARNING in xfs_bmapi_convert_delalloc
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
------------[ cut here ]------------
WARNING: CPU: 1 PID: 73 at fs/xfs/libxfs/xfs_bmap.c:4641 xfs_bmapi_convert_delalloc+0x468/0x480 fs/xfs/libxfs/xfs_bmap.c:4655
Modules linked in:
CPU: 1 PID: 73 Comm: kworker/u4:2 Not tainted 5.15.183-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: writeback wb_workfn (flush-7:2)
RIP: 0010:xfs_bmapi_convert_delalloc+0x468/0x480 fs/xfs/libxfs/xfs_bmap.c:4641
Code: fe ff ff 48 8b 4d 38 e9 83 fd ff ff 8b 94 24 90 00 00 00 48 8b b4 24 98 00 00 00 48 8b 7c 24 20 e8 8d 0b 03 00 e9 4b ff ff ff <0f> 0b 41 b9 e4 ff ff ff e9 21 fe ff ff e8 16 7b bc 00 66 0f 1f 44
RSP: 0018:ffffc900008e77d8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888112780708 RCX: 000000000000000b
RDX: 00000000ffffffff RSI: ffffffffffffffff RDI: ffff888119013800
RBP: ffff8881127806c0 R08: ffffffff8145363c R09: 0000000000000000
R10: 0000000000000001 R11: 000000000000002a R12: 0000000000000000
R13: ffffc900008e7810 R14: 0000000000000000 R15: ffff888114163000
FS:  0000000000000000(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555628184a8 CR3: 0000000110163000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 xfs_convert_blocks fs/xfs/xfs_aops.c:245 [inline]
 xfs_map_blocks+0x1a2/0x470 fs/xfs/xfs_aops.c:366
 iomap_writepage_map fs/iomap/buffered-io.c:1320 [inline]
 iomap_do_writepage+0x148/0x950 fs/iomap/buffered-io.c:1485
 write_cache_pages+0x209/0x4b0 mm/page-writeback.c:2277
 iomap_writepages+0x17/0x30 fs/iomap/buffered-io.c:1516
 xfs_vm_writepages+0x78/0xa0 fs/xfs/xfs_aops.c:488
 do_writepages+0x116/0x1e0 mm/page-writeback.c:2386
 __writeback_single_inode+0x58/0x3f0 fs/fs-writeback.c:1647
 writeback_sb_inodes+0x210/0x550 fs/fs-writeback.c:1930
 wb_writeback+0xc9/0x350 fs/fs-writeback.c:2104
 wb_do_writeback fs/fs-writeback.c:2247 [inline]
 wb_workfn+0xf0/0x570 fs/fs-writeback.c:2288
 process_one_work+0x26f/0x4e0 kernel/workqueue.c:2310
 worker_thread+0x4d/0x3b0 kernel/workqueue.c:2457
 kthread+0x122/0x140 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>