ci2 starts bisection 2025-08-12 02:31:16.704202763 +0000 UTC m=+28695.703197946
bisecting fixing commit since 7e69c33e4858ea275b2e1c0bf0bea13199e7e91b
building syzkaller on bc80e4f080d226b12fae367dc46bc54ac3681009
ensuring issue is reproducible on original commit 7e69c33e4858ea275b2e1c0bf0bea13199e7e91b

testing commit 7e69c33e4858ea275b2e1c0bf0bea13199e7e91b gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: f68e721324ca7df8409c77d095792c094e2942bcaed9e7e9fdbf46d3e061bbcf
all runs: crashed: kernel BUG in gfs2_withdraw
representative crash: kernel BUG in gfs2_withdraw, types: [BUG]
check whether we can drop unnecessary instrumentation
disabling configs for [atomic_sleep hang memleak ubsan kasan locking], they are not needed
testing commit 7e69c33e4858ea275b2e1c0bf0bea13199e7e91b gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: b55b20ec081cb950aeba5451e41dc1ae098b53271224f5da9f0a76e9216e14fb
all runs: crashed: kernel BUG in gfs2_withdraw
representative crash: kernel BUG in gfs2_withdraw, types: [BUG]
the bug reproduces without the instrumentation
disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed
kconfig minimization: base=7505 full=9721 leaves diff=1998
split chunks (needed=false): <1998>
split chunk #0 of len 1998 into 5 parts
testing without sub-chunk 1/5
disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed
testing commit 7e69c33e4858ea275b2e1c0bf0bea13199e7e91b gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: b520e64407b1f492601de037268d0902400f2aff096622cae3e06f1a3181a0ec
all runs: crashed: kernel BUG in gfs2_withdraw
representative crash: kernel BUG in gfs2_withdraw, types: [BUG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed
testing commit 7e69c33e4858ea275b2e1c0bf0bea13199e7e91b gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 5e0bdd0b9e08f25c2c67d9c375897a6aae686d63a68d70133b2b86fbb4020774
all runs: OK
false negative chance: 0.000
testing without sub-chunk 3/5
disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing commit 7e69c33e4858ea275b2e1c0bf0bea13199e7e91b gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 030c13ba6b3a164dd884bb88654cd135c1e19c686dfc5fa61c69aca686601f43
all runs: crashed: kernel BUG in gfs2_withdraw
representative crash: kernel BUG in gfs2_withdraw, types: [BUG]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [atomic_sleep hang memleak ubsan kasan locking], they are not needed
testing commit 7e69c33e4858ea275b2e1c0bf0bea13199e7e91b gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 2af790966d2564351f7853b5aa4021bbb7eedafb2b0b383aee287e913a2fa8ec
all runs: crashed: kernel BUG in gfs2_withdraw
representative crash: kernel BUG in gfs2_withdraw, types: [BUG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed
testing commit 7e69c33e4858ea275b2e1c0bf0bea13199e7e91b gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 5d5285cc24b2bd02ab264cd92e4595640f09d18fac411dadb2ce55534d610f44
all runs: crashed: kernel BUG in gfs2_withdraw
representative crash: kernel BUG in gfs2_withdraw, types: [BUG]
the chunk can be dropped
minimized to 400 configs; suspects: [6LOWPAN ACPI_VIDEO DLM DRM DRM_VRAM_HELPER DUMMY DVB_AF9013 DVB_AF9033 DVB_AS102 DVB_AS102_FE DVB_B2C2_FLEXCOP DVB_B2C2_FLEXCOP_USB 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_CXUSB_ANALOG 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 E100 ECRYPT_FS ECRYPT_FS_MESSAGING EEPROM_93CX6 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_POSIX_ACL EXT3_FS_SECURITY EXT4_FS_SECURITY EXTCON_USBC_TUSB320 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 FB_DEFERRED_IO FB_SYS_COPYAREA FB_SYS_FILLRECT FB_SYS_FOPS FB_SYS_IMAGEBLIT FB_TILEBLITTING FB_VIRTUAL FDDI FIB_RULES FIREWIRE FIREWIRE_NET FIREWIRE_OHCI FIREWIRE_SBP2 FRAMEBUFFER_CONSOLE_ROTATION FRONTSWAP FS_DAX FS_DAX_PMD FS_ENCRYPTION FS_ENCRYPTION_ALGS FS_VERITY FS_VERITY_BUILTIN_SIGNATURES FTL FW_LOADER_COMPRESS FW_LOADER_USER_HELPER_FALLBACK GACT_PROB GET_FREE_REGION GFS2_FS GFS2_FS_LOCKING_DLM GNSS_USB GOOGLE_COREBOOT_TABLE GOOGLE_FIRMWARE GOOGLE_MEMCONSOLE GOOGLE_MEMCONSOLE_COREBOOT GOOGLE_VPD GPIO_DLN2 GPIO_VIPERBOARD GREENASIA_FF GREYBUS GREYBUS_BRIDGED_PHY GREYBUS_ES2 GREYBUS_HID GREYBUS_USB GTP HAVE_ARCH_USERFAULTFD_MINOR HAVE_IMA_KEXEC HDLC HDLC_CISCO HDLC_FR HDLC_PPP HDLC_RAW HDLC_RAW_ETH HDLC_X25 HDMI HFSPLUS_FS HFS_FS HIDRAW HID_ACCUTOUCH HID_ACRUX HID_ACRUX_FF HID_ALPS HID_APPLEIR HID_ASUS HID_AUREAL HID_BATTERY_STRENGTH HID_BETOP_FF HID_BIGBEN_FF HID_CMEDIA HID_CORSAIR HID_COUGAR HID_CP2112 HID_CREATIVE_SB0540 HID_ELAN HID_ELECOM HID_ELO HID_EMS_FF HID_FT260 HID_GEMBIRD HID_GFRM HID_GLORIOUS HID_GREENASIA HID_GT683R HID_GYRATION HID_HOLTEK HID_ICADE HID_JABRA HID_KEYTOUCH HID_KYE HID_LCPOWER HID_LED HID_LENOVO HID_LETSKETCH HID_LOGITECH_DJ HID_LOGITECH_HIDPP HID_MACALLY HID_MAGICMOUSE HID_MALTRON HID_MAYFLASH HID_MCP2221 HID_MEGAWORLD_FF HID_NTI HID_NTRIG HID_ORTEK HID_PENMOUNT HID_PETALYNX HID_PICOLCD HID_PICOLCD_BACKLIGHT HID_PICOLCD_CIR HID_PICOLCD_FB HID_PICOLCD_LCD HID_PICOLCD_LEDS HID_PID HID_PLANTRONICS HID_PRIMAX HID_PRODIKEYS HID_PXRC HID_RAZER HID_RETRODE HID_RMI HID_ROCCAT HID_SAITEK HID_SAMSUNG HID_SEMITEK HID_SENSOR_ACCEL_3D HID_SENSOR_ALS HID_SENSOR_CUSTOM_INTEL_HINGE 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_SIGMAMICRO HID_SPEEDLINK HID_STEAM HID_STEELSERIES HID_SUNPLUS HID_THINGM HID_TIVO HID_TOPRE HID_TOPSEED HID_TWINHAN HID_U2FZERO HID_UCLOGIC HID_UDRAW_PS3 HID_VIEWSONIC HID_VIVALDI HID_VIVALDI_COMMON HID_VRC2 HID_WACOM HID_WALTOP HID_WIIMOTE HID_XIAOMI HID_XINMO HID_ZYDACRON HMM_MIRROR HOLTEK_FF HOTPLUG_PCI_PCIE HPFS_FS I2C_CP2615 I2C_DIOLAN_U2C I2C_DLN2 I2C_MUX_REG I2C_ROBOTFUZZ_OSIF I2C_SI4713 I2C_SLAVE_EEPROM I2C_TINY_USB I2C_VIPERBOARD IEEE802154 IEEE802154_6LOWPAN IEEE802154_ATUSB IEEE802154_DRIVERS IEEE802154_HWSIM IEEE802154_NL802154_EXPERIMENTAL IEEE802154_SOCKET IFB IMA IMA_APPRAISE IMA_APPRAISE_MODSIG 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_AH INET6_ESP INET6_ESPINTCP INET6_ESP_OFFLOAD INET6_IPCOMP INET6_TUNNEL INET6_XFRM_TUNNEL INET_AH INET_DCCP_DIAG INET_DIAG_DESTROY INET_ESP INET_ESPINTCP INET_ESP_OFFLOAD INET_IPCOMP INET_MPTCP_DIAG INET_RAW_DIAG INET_SCTP_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 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 IP6_NF_MATCH_AH IP6_NF_MATCH_EUI64 IP6_NF_MATCH_FRAG IP6_NF_MATCH_HL IP6_NF_MATCH_IPV6HEADER IP6_NF_MATCH_MH IP6_NF_MATCH_OPTS IP6_NF_MATCH_RPFILTER IP6_NF_MATCH_RT IP6_NF_MATCH_SRH IP6_NF_RAW IP6_NF_SECURITY IP6_NF_TARGET_HL 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_ADVANCED_ROUTER IP_DCCP IP_DCCP_CCID3 IP_DCCP_TFRC_LIB IP_FIB_TRIE_STATS IP_MROUTE IP_MROUTE_COMMON 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_PIMSM_V1 IP_PIMSM_V2 IP_PNP_RARP IP_ROUTE_CLASSID IP_ROUTE_MULTIPATH IP_ROUTE_VERBOSE 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_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_SCTP IP_VS_PROTO_TCP IP_VS_PROTO_UDP IP_VS_RR IP_VS_SED IP_VS_SH IP_VS_TWOS IP_VS_WLC IP_VS_WRR IR_IGORPLUGUSB IR_IGUANA IR_IMON IR_IMON_RAW IR_MCEUSB IR_REDRAT3 IR_STREAMZAP IR_TOY IR_TTUSBIR ISDN ISDN_CAPI_MIDDLEWARE JFFS2_CMODE_PRIORITY JFFS2_COMPRESSION_OPTIONS JFFS2_FS JFFS2_FS_POSIX_ACL JFFS2_FS_SECURITY JFFS2_FS_WRITEBUFFER JFFS2_FS_XATTR JFFS2_LZO JFFS2_RTIME JFFS2_RUBIN JFFS2_SUMMARY JFFS2_ZLIB JFS_DEBUG JFS_FS JFS_POSIX_ACL JFS_SECURITY LAPB LCD_CLASS_DEVICE MAC802154 MEDIA_RADIO_SUPPORT MEDIA_TEST_SUPPORT MFD_DLN2 MFD_VIPERBOARD MPTCP NET_IPGRE_DEMUX NFT_FWD_NETDEV NF_CONNTRACK_FTP NF_CONNTRACK_SIP NF_TABLES NF_TABLES_NETDEV RADIO_ADAPTERS RADIO_SI4713 RFKILL SND SOUND WAN XFRM ZONE_DEVICE]
disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed
testing current HEAD 3594f306da129190de25938b823f353ef7f9e322
testing commit 3594f306da129190de25938b823f353ef7f9e322 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 987d27af26c12f885e8e2198791c3169b55afefa8a8a3bc5a1b4193b727e7411
all runs: crashed: kernel BUG in gfs2_withdraw
representative crash: kernel BUG in gfs2_withdraw, types: [BUG]
crash still not fixed/happens on the oldest tested release
revisions tested: 8, total time: 2h22m44.257538798s (build: 1h32m35.779455537s, test: 45m24.578322208s)
crash still not fixed or there were kernel test errors
commit msg: Linux 6.1.147
crash: kernel BUG in gfs2_withdraw
  bh = 2073 (magic number)
  function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 492
gfs2: fsid=#ãöúSÖñ^Ñ°Õ~oó»Á$®.s: about to withdraw this file system
------------[ cut here ]------------
kernel BUG at fs/gfs2/util.c:352!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 3648 Comm: syz.2.16 Not tainted 6.1.147-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : gfs2_withdraw+0x760/0x824 include/linux/wait_bit.h:76
lr : gfs2_withdraw+0xd0/0x824 fs/gfs2/util.c:351
sp : ffff800012dc3830
x29: ffff800012dc3860 x28: ffff0000c77f4b00 x27: ffff80000a025000
x26: 0000000000000000 x25: 0000000000001376 x24: ffff0000c7930548
x23: 0000000000000000 x22: ffff0000c54c4000 x21: 0000000000000004
x20: ffff0000c54c40a8 x19: ffff0000c54c4000 x18: ffff80000ab4c28b
x17: 0000000000000001 x16: ffffffffffffffff x15: 0000000000000003
x14: ffff80000b1ff208 x13: 0000000000000003 x12: 0000000000000003
x11: 00000000ffffdfff x10: ffff80000b101bd4 x9 : 733e4106d77a8400
x8 : 00000000000000c7 x7 : 0000000000000000 x6 : ffff800009fa3470
x5 : 0000000000000000 x4 : 0000000000000080 x3 : 0000000000000000
x2 : 0000000000000000 x1 : ffff80000ab4c28b x0 : 0000000000000048
Call trace:
 wait_on_bit include/linux/wait_bit.h:76 [inline]
 gfs2_withdraw+0x760/0x824 fs/gfs2/util.c:343
 gfs2_meta_check_ii+0x3c/0x50 fs/gfs2/util.c:511
 gfs2_metatype_check_i fs/gfs2/util.h:126 [inline]
 gfs2_meta_buffer+0xfc/0x14c fs/gfs2/meta_io.c:492
 gfs2_meta_inode_buffer fs/gfs2/meta_io.h:72 [inline]
 gfs2_inode_refresh+0x3c/0x2d0 fs/gfs2/glops.c:480
 inode_go_instantiate+0x1c/0x28 fs/gfs2/glops.c:503
 gfs2_instantiate+0x90/0x178 fs/gfs2/glock.c:520
 gfs2_glock_holder_ready fs/gfs2/glock.c:1333 [inline]
 gfs2_glock_wait fs/gfs2/glock.c:1353 [inline]
 gfs2_glock_nq+0x38c/0x588 fs/gfs2/glock.c:1596
 gfs2_glock_nq_init fs/gfs2/glock.h:255 [inline]
 gfs2_lookupi+0x14c/0x224 fs/gfs2/inode.c:312
 gfs2_lookup_simple+0x60/0x98 fs/gfs2/inode.c:264
 init_journal+0x11c/0x98c fs/gfs2/ops_fstype.c:745
 init_inodes+0x58/0x138 fs/gfs2/ops_fstype.c:889
 gfs2_fill_super+0x7ac/0x928 fs/gfs2/ops_fstype.c:1246
 get_tree_bdev+0x1a8/0x238 fs/super.c:1366
 gfs2_get_tree+0x28/0x80 fs/gfs2/ops_fstype.c:1327
 vfs_get_tree+0x30/0xe0 fs/super.c:1573
 do_new_mount+0x148/0x380 fs/namespace.c:3063
 path_mount+0x2f4/0x4c4 fs/namespace.c:3393
 do_mount fs/namespace.c:3406 [inline]
 __do_sys_mount fs/namespace.c:3614 [inline]
 __se_sys_mount fs/namespace.c:3591 [inline]
 __arm64_sys_mount+0x1bc/0x234 fs/namespace.c:3591
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x40/0x104 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0xb0/0xec arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x24/0x8c arch/arm64/kernel/syscall.c:204
 el0_svc+0x34/0xe4 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Code: 52800181 52800043 94634fa0 17fffe49 (d4210000) 
---[ end trace 0000000000000000 ]---