Warning: Permanently added '10.128.0.173' (ED25519) to the list of known hosts. 2026/02/24 14:25:32 2026/02/24 14:25:32 ignoring optional flag "type"="gce" 2026/02/24 14:25:32 2026/02/24 14:25:32 parsed 1 programs 2026/02/24 14:25:32 2026/02/24 14:25:32 executed programs: 0 [ 44.016609][ T324] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.024848][ T324] bridge0: port 1(bridge_slave_0) entered disabled state [ 44.033805][ T324] device bridge_slave_0 entered promiscuous mode [ 44.041806][ T324] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.049429][ T324] bridge0: port 2(bridge_slave_1) entered disabled state [ 44.057751][ T324] device bridge_slave_1 entered promiscuous mode [ 44.097920][ T324] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.105384][ T324] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.113848][ T324] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.121594][ T324] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.140610][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 44.149439][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 44.157661][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 44.165865][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 44.176491][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 44.185851][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.194936][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.206474][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 44.215755][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.223728][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.238291][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 44.249293][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 44.264198][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 44.276618][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 44.286138][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 44.294167][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 44.302877][ T324] device veth0_vlan entered promiscuous mode [ 44.313163][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 44.325042][ T324] device veth1_macvtap entered promiscuous mode [ 44.335470][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 44.345785][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 44.375242][ T24] kauditd_printk_skb: 14 callbacks suppressed [ 44.375256][ T24] audit: type=1400 audit(1771943132.590:88): avc: denied { mounton } for pid=328 comm="syz-executor.0" path="/root/syzkaller-testdir794432504/syzkaller.4ts8yg/0/file0" dev="sda1" ino=2034 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 44.404042][ T329] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 44.425585][ T24] audit: type=1400 audit(1771943132.640:89): avc: denied { mount } for pid=328 comm="syz-executor.0" name="/" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [ 44.463865][ T24] audit: type=1400 audit(1771943132.680:90): avc: denied { write } for pid=334 comm="syz-executor.0" name="/" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 44.488509][ T334] EXT4-fs error (device loop0): ext4_map_blocks:740: inode #18: block 207: comm syz-executor.0: lblock 8239 mapped to illegal pblock 207 (length 1) [ 44.500256][ T24] audit: type=1400 audit(1771943132.680:91): avc: denied { add_name } for pid=334 comm="syz-executor.0" name="core" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 44.515003][ T334] EXT4-fs error (device loop0): ext4_discard_preallocations:4605: comm syz-executor.0: Error -117 loading buddy information for 4294963226 [ 44.528519][ T24] audit: type=1400 audit(1771943132.680:92): avc: denied { create } for pid=334 comm="syz-executor.0" name="core" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=file permissive=1 [ 44.528569][ T24] audit: type=1400 audit(1771943132.680:93): avc: denied { read write open } for pid=334 comm="syz-executor.0" path="/root/syzkaller-testdir794432504/syzkaller.4ts8yg/0/file0/core" dev="loop0" ino=18 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=file permissive=1 [ 44.546142][ T334] EXT4-fs error (device loop0): ext4_discard_preallocations:4605: comm syz-executor.0: Error -117 loading buddy information for 4294963226 [ 44.575819][ T24] audit: type=1400 audit(1771943132.700:94): avc: denied { mounton } for pid=328 comm="syz-executor.0" path="/root/syzkaller-testdir794432504/syzkaller.4ts8yg/0/file0/bus" dev="loop0" ino=19 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=file permissive=1 [ 44.604812][ T334] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 44.660272][ T334] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 44.671614][ T24] audit: type=1400 audit(1771943132.880:95): avc: denied { unmount } for pid=324 comm="syz-executor.0" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [ 44.684110][ T334] EXT4-fs error (device loop0): ext4_ext_truncate:4450: inode #18: comm syz-executor.0: mark_inode_dirty error [ 44.705987][ T334] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 44.721985][ T334] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 44.732653][ T334] EXT4-fs error (device loop0): ext4_truncate:4396: inode #18: comm syz-executor.0: mark_inode_dirty error [ 44.747071][ T9] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm kworker/u4:1: Invalid inode table block 6286097877272143512 in block_group 0 [ 44.784037][ T24] audit: type=1400 audit(1771943133.000:96): avc: denied { mounton } for pid=335 comm="syz-executor.0" path="/root/syzkaller-testdir794432504/syzkaller.4ts8yg/1/bus" dev="sda1" ino=2035 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=file permissive=1 [ 44.845197][ T24] audit: type=1400 audit(1771943133.050:97): avc: denied { unmount } for pid=324 comm="syz-executor.0" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=filesystem permissive=1 [ 44.887091][ T340] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 44.918855][ T344] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 44.937731][ T344] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 44.950302][ T344] EXT4-fs error (device loop0): ext4_dirty_inode:6162: inode #18: comm syz-executor.0: mark_inode_dirty error [ 44.964147][ T344] EXT4-fs error (device loop0): ext4_read_block_bitmap_nowait:476: comm syz-executor.0: Invalid block bitmap block 2037579726367510051 in block_group 0 [ 44.982022][ T344] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 44.999171][ T344] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 45.010188][ T344] EXT4-fs error (device loop0): ext4_dirty_inode:6162: inode #18: comm syz-executor.0: mark_inode_dirty error [ 45.027416][ T344] EXT4-fs error (device loop0): ext4_read_block_bitmap_nowait:476: comm syz-executor.0: Invalid block bitmap block 2037579726367510051 in block_group 0 [ 45.048175][ T344] EXT4-fs error (device loop0): ext4_discard_preallocations:4613: comm syz-executor.0: Error -117 reading block bitmap for 0 [ 45.066344][ T344] EXT4-fs error (device loop0): ext4_discard_preallocations:4605: comm syz-executor.0: Error -117 loading buddy information for 4294963226 [ 45.156913][ T349] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 45.182404][ T353] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 45.198754][ T353] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 45.215960][ T353] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 45.233615][ T353] EXT4-fs error (device loop0): ext4_ext_truncate:4450: inode #19: comm syz-executor.0: mark_inode_dirty error [ 45.248117][ T353] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 45.265040][ T353] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 45.276714][ T353] EXT4-fs error (device loop0): ext4_truncate:4396: inode #19: comm syz-executor.0: mark_inode_dirty error [ 45.290387][ T353] EXT4-fs error (device loop0) in ext4_setattr:5726: Corrupt filesystem [ 45.365955][ T355] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 45.390086][ T359] EXT4-fs error (device loop0): ext4_read_block_bitmap_nowait:476: comm syz-executor.0: Invalid block bitmap block 2037579726367510051 in block_group 0 [ 45.408881][ T359] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 45.431728][ T359] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 45.442299][ T359] EXT4-fs error (device loop0): ext4_dirty_inode:6162: inode #18: comm syz-executor.0: mark_inode_dirty error [ 45.457899][ T359] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 45.476632][ T359] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 45.494850][ T359] EXT4-fs error (device loop0): ext4_ext_truncate:4450: inode #18: comm syz-executor.0: mark_inode_dirty error [ 45.509103][ T359] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 45.526374][ T359] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 45.537883][ T359] EXT4-fs error (device loop0): ext4_truncate:4396: inode #18: comm syz-executor.0: mark_inode_dirty error [ 45.639349][ T364] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 45.671966][ T368] EXT4-fs error (device loop0): ext4_map_blocks:740: inode #18: block 112: comm syz-executor.0: lblock 0 mapped to illegal pblock 112 (length 1) [ 45.692646][ T368] EXT4-fs error (device loop0): ext4_map_blocks:630: inode #18: block 112: comm syz-executor.0: lblock 0 mapped to illegal pblock 112 (length 1) [ 45.713680][ T368] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 45.730290][ T368] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 45.741353][ T368] EXT4-fs error (device loop0): ext4_ext_truncate:4450: inode #18: comm syz-executor.0: mark_inode_dirty error [ 45.755192][ T368] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 45.772294][ T368] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 45.784108][ T368] EXT4-fs error (device loop0): ext4_truncate:4396: inode #18: comm syz-executor.0: mark_inode_dirty error [ 45.797955][ T338] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm kworker/u4:4: Invalid inode table block 6286097877272143512 in block_group 0 [ 45.926337][ T373] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 45.951931][ T377] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 45.979765][ T377] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 45.996242][ T377] EXT4-fs error (device loop0): ext4_get_max_inline_size:115: inode #19: comm syz-executor.0: can't get inode location 19 [ 46.012522][ T377] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 46.030624][ T377] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 46.041127][ T377] EXT4-fs error (device loop0): ext4_dirty_inode:6162: inode #19: comm syz-executor.0: mark_inode_dirty error [ 46.056054][ T377] EXT4-fs error (device loop0): ext4_read_block_bitmap_nowait:476: comm syz-executor.0: Invalid block bitmap block 2037579726367510051 in block_group 0 [ 46.077598][ T377] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 46.096253][ T377] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 46.107794][ T377] EXT4-fs error (device loop0): ext4_dirty_inode:6162: inode #19: comm syz-executor.0: mark_inode_dirty error [ 46.196054][ T395] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 46.223351][ T399] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 46.239735][ T399] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 46.254940][ T399] EXT4-fs error (device loop0): __ext4_ext_dirty:182: inode #19: comm syz-executor.0: mark_inode_dirty error [ 46.267662][ T399] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 46.287629][ T399] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 46.300021][ T399] EXT4-fs error (device loop0): ext4_truncate:4396: inode #19: comm syz-executor.0: mark_inode_dirty error [ 46.316872][ T399] EXT4-fs error (device loop0) in ext4_setattr:5726: Corrupt filesystem [ 46.437219][ T404] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 46.468807][ T408] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 46.489948][ T408] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 46.501089][ T408] EXT4-fs error (device loop0): ext4_dirty_inode:6162: inode #18: comm syz-executor.0: mark_inode_dirty error [ 46.515179][ T408] EXT4-fs error (device loop0): ext4_read_block_bitmap_nowait:476: comm syz-executor.0: Invalid block bitmap block 2037579726367510051 in block_group 0 [ 46.536777][ T408] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 46.555061][ T408] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 46.569309][ T408] EXT4-fs error (device loop0): ext4_dirty_inode:6162: inode #18: comm syz-executor.0: mark_inode_dirty error [ 46.587733][ T408] EXT4-fs error (device loop0): ext4_read_block_bitmap_nowait:476: comm syz-executor.0: Invalid block bitmap block 2037579726367510051 in block_group 0 [ 46.604705][ T408] EXT4-fs error (device loop0): ext4_discard_preallocations:4613: comm syz-executor.0: Error -117 reading block bitmap for 0 [ 46.619452][ T408] EXT4-fs error (device loop0): ext4_discard_preallocations:4605: comm syz-executor.0: Error -117 loading buddy information for 4294963226 [ 46.738283][ T413] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 46.768850][ T417] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 46.785340][ T417] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 46.796560][ T417] EXT4-fs error (device loop0): ext4_dirty_inode:6162: inode #19: comm syz-executor.0: mark_inode_dirty error [ 46.811577][ T417] EXT4-fs error (device loop0): ext4_read_block_bitmap_nowait:476: comm syz-executor.0: Invalid block bitmap block 2037579726367510051 in block_group 0 [ 46.833849][ T417] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 46.850173][ T417] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 46.860560][ T417] EXT4-fs error (device loop0): ext4_dirty_inode:6162: inode #19: comm syz-executor.0: mark_inode_dirty error [ 46.874307][ T417] EXT4-fs error (device loop0): ext4_read_block_bitmap_nowait:476: comm syz-executor.0: Invalid block bitmap block 2037579726367510051 in block_group 0 [ 46.893377][ T417] EXT4-fs error (device loop0): ext4_discard_preallocations:4613: comm syz-executor.0: Error -117 reading block bitmap for 0 [ 46.921864][ T417] EXT4-fs error (device loop0): ext4_discard_preallocations:4605: comm syz-executor.0: Error -117 loading buddy information for 4294963226 [ 47.055438][ T425] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 47.079608][ T429] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 47.095947][ T429] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 47.107339][ T429] EXT4-fs error (device loop0): ext4_write_end:1367: inode #18: comm syz-executor.0: mark_inode_dirty error [ 47.130044][ T9] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm kworker/u4:1: Invalid inode table block 6286097877272143512 in block_group 0 [ 47.245345][ T434] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 47.276598][ T438] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 47.299272][ T438] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 47.309592][ T438] EXT4-fs error (device loop0): ext4_dirty_inode:6162: inode #18: comm syz-executor.0: mark_inode_dirty error [ 47.323331][ T438] EXT4-fs error (device loop0): ext4_read_block_bitmap_nowait:476: comm syz-executor.0: Invalid block bitmap block 2037579726367510051 in block_group 0 [ 47.341000][ T438] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 47.360722][ T438] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 47.371478][ T438] EXT4-fs error (device loop0): ext4_dirty_inode:6162: inode #18: comm syz-executor.0: mark_inode_dirty error [ 47.386124][ T438] EXT4-fs error (device loop0): ext4_read_block_bitmap_nowait:476: comm syz-executor.0: Invalid block bitmap block 2037579726367510051 in block_group 0 [ 47.403863][ T438] EXT4-fs error (device loop0): ext4_discard_preallocations:4613: comm syz-executor.0: Error -117 reading block bitmap for 0 [ 47.418807][ T438] EXT4-fs error (device loop0): ext4_discard_preallocations:4605: comm syz-executor.0: Error -117 loading buddy information for 4294963226 [ 47.514978][ T443] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 47.539207][ T447] EXT4-fs error (device loop0): ext4_read_inode_bitmap:140: comm syz-executor.0: Invalid inode bitmap blk 13235637089195092855 in block_group 0 [ 47.638220][ T449] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 47.669386][ T453] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 47.693843][ T453] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 47.709519][ T453] EXT4-fs error (device loop0): ext4_dirty_inode:6162: inode #19: comm syz-executor.0: mark_inode_dirty error [ 47.722726][ T453] EXT4-fs error (device loop0): ext4_read_block_bitmap_nowait:476: comm syz-executor.0: Invalid block bitmap block 2037579726367510051 in block_group 0 [ 47.743955][ T453] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 47.760675][ T453] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 47.772446][ T453] EXT4-fs error (device loop0): ext4_dirty_inode:6162: inode #19: comm syz-executor.0: mark_inode_dirty error [ 47.785477][ T453] EXT4-fs error (device loop0): ext4_read_block_bitmap_nowait:476: comm syz-executor.0: Invalid block bitmap block 2037579726367510051 in block_group 0 [ 47.802336][ T453] EXT4-fs error (device loop0): ext4_discard_preallocations:4613: comm syz-executor.0: Error -117 reading block bitmap for 0 [ 47.816891][ T453] EXT4-fs error (device loop0): ext4_discard_preallocations:4605: comm syz-executor.0: Error -117 loading buddy information for 4294963226 [ 47.915645][ T458] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 47.950292][ T478] EXT4-fs error (device loop0): ext4_map_blocks:630: inode #2: block 16: comm syz-executor.0: lblock 0 mapped to illegal pblock 16 (length 1) [ 47.967784][ T478] EXT4-fs error (device loop0): ext4_map_blocks:630: inode #2: block 16: comm syz-executor.0: lblock 0 mapped to illegal pblock 16 (length 1) [ 48.066000][ T480] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 48.090507][ T484] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 48.106508][ T484] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 48.127449][ T484] EXT4-fs error (device loop0): ext4_get_max_inline_size:115: inode #19: comm syz-executor.0: can't get inode location 19 [ 48.141651][ T484] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 48.161581][ T484] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 48.172908][ T484] EXT4-fs error (device loop0): ext4_dirty_inode:6162: inode #19: comm syz-executor.0: mark_inode_dirty error [ 48.192485][ T484] EXT4-fs error (device loop0): ext4_read_block_bitmap_nowait:476: comm syz-executor.0: Invalid block bitmap block 2037579726367510051 in block_group 0 [ 48.209605][ T484] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 48.226063][ T484] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 48.236568][ T484] EXT4-fs error (device loop0): ext4_dirty_inode:6162: inode #19: comm syz-executor.0: mark_inode_dirty error [ 48.345385][ T490] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 48.369506][ T494] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 48.404110][ T494] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 48.415743][ T494] EXT4-fs error (device loop0): __ext4_ext_dirty:182: inode #18: comm syz-executor.0: mark_inode_dirty error [ 48.429310][ T494] EXT4-fs error (device loop0): ext4_read_block_bitmap_nowait:476: comm syz-executor.0: Invalid block bitmap block 2037579726367510051 in block_group 0 [ 48.448843][ T494] EXT4-fs error (device loop0) in ext4_mb_clear_bb:5661: Corrupt filesystem [ 48.464573][ T494] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 48.485262][ T494] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 48.495993][ T494] EXT4-fs error (device loop0): ext4_ext_truncate:4450: inode #18: comm syz-executor.0: mark_inode_dirty error [ 48.513529][ T494] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 48.530208][ T494] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 48.675095][ T502] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 48.707197][ T506] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 48.723434][ T506] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 48.742670][ T506] EXT4-fs error (device loop0): ext4_write_end:1367: inode #18: comm syz-executor.0: mark_inode_dirty error [ 48.759687][ T9] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm kworker/u4:1: Invalid inode table block 6286097877272143512 in block_group 0 [ 48.925699][ T517] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 48.950937][ T521] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 48.967308][ T521] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 48.983604][ T521] EXT4-fs error (device loop0): ext4_get_max_inline_size:115: inode #19: comm syz-executor.0: can't get inode location 19 [ 49.001684][ T521] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 2026/02/24 14:25:37 2026/02/24 14:25:37 executed programs: 32 [ 49.020039][ T521] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 49.034698][ T521] EXT4-fs error (device loop0): ext4_dirty_inode:6162: inode #19: comm syz-executor.0: mark_inode_dirty error [ 49.047886][ T521] EXT4-fs error (device loop0): ext4_read_block_bitmap_nowait:476: comm syz-executor.0: Invalid block bitmap block 2037579726367510051 in block_group 0 [ 49.065830][ T521] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 49.084863][ T521] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 49.095861][ T521] EXT4-fs error (device loop0): ext4_dirty_inode:6162: inode #19: comm syz-executor.0: mark_inode_dirty error [ 49.195427][ T526] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 49.224529][ T530] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 49.247321][ T530] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 49.259376][ T530] EXT4-fs error (device loop0): ext4_write_end:1367: inode #18: comm syz-executor.0: mark_inode_dirty error [ 49.279856][ T9] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm kworker/u4:1: Invalid inode table block 6286097877272143512 in block_group 0 [ 49.385999][ T532] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 49.422788][ T536] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 49.445817][ T536] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 49.456404][ T536] EXT4-fs error (device loop0): ext4_dirty_inode:6162: inode #18: comm syz-executor.0: mark_inode_dirty error [ 49.470405][ T536] EXT4-fs error (device loop0): ext4_read_block_bitmap_nowait:476: comm syz-executor.0: Invalid block bitmap block 2037579726367510051 in block_group 0 [ 49.494136][ T536] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 49.511485][ T536] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 49.522626][ T536] EXT4-fs error (device loop0): ext4_dirty_inode:6162: inode #18: comm syz-executor.0: mark_inode_dirty error [ 49.541221][ T536] EXT4-fs error (device loop0): ext4_read_block_bitmap_nowait:476: comm syz-executor.0: Invalid block bitmap block 2037579726367510051 in block_group 0 [ 49.559330][ T536] EXT4-fs error (device loop0): ext4_discard_preallocations:4613: comm syz-executor.0: Error -117 reading block bitmap for 0 [ 49.574504][ T536] EXT4-fs error (device loop0): ext4_discard_preallocations:4605: comm syz-executor.0: Error -117 loading buddy information for 4294963226 [ 49.685690][ T541] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 49.710238][ T545] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 49.726817][ T545] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 49.743658][ T545] EXT4-fs error (device loop0): ext4_get_max_inline_size:115: inode #19: comm syz-executor.0: can't get inode location 19 [ 49.764106][ T545] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 49.782129][ T545] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 49.793872][ T545] EXT4-fs error (device loop0): ext4_dirty_inode:6162: inode #19: comm syz-executor.0: mark_inode_dirty error [ 49.807680][ T545] EXT4-fs error (device loop0): ext4_read_block_bitmap_nowait:476: comm syz-executor.0: Invalid block bitmap block 2037579726367510051 in block_group 0 [ 49.824467][ T545] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 49.841696][ T545] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 49.852122][ T545] EXT4-fs error (device loop0): ext4_dirty_inode:6162: inode #19: comm syz-executor.0: mark_inode_dirty error [ 49.975413][ T550] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 50.018392][ T554] EXT4-fs error (device loop0): ext4_map_blocks:630: inode #2: block 16: comm syz-executor.0: lblock 0 mapped to illegal pblock 16 (length 1) [ 50.034817][ T554] EXT4-fs error (device loop0): ext4_map_blocks:630: inode #2: block 16: comm syz-executor.0: lblock 0 mapped to illegal pblock 16 (length 1) [ 50.145548][ T556] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 50.174562][ T560] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 50.194543][ T560] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 50.205707][ T560] EXT4-fs error (device loop0): ext4_write_end:1367: inode #18: comm syz-executor.0: mark_inode_dirty error [ 50.226615][ T9] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm kworker/u4:1: Invalid inode table block 6286097877272143512 in block_group 0 [ 50.325811][ T562] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 50.353070][ T566] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 50.370098][ T566] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 50.381804][ T566] EXT4-fs error (device loop0): ext4_write_end:1367: inode #18: comm syz-executor.0: mark_inode_dirty error [ 50.402878][ T9] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm kworker/u4:1: Invalid inode table block 6286097877272143512 in block_group 0 [ 50.550278][ T568] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 50.580384][ T572] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 50.597577][ T572] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 50.609197][ T572] EXT4-fs error (device loop0): ext4_write_end:1367: inode #18: comm syz-executor.0: mark_inode_dirty error [ 50.632182][ T9] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm kworker/u4:1: Invalid inode table block 6286097877272143512 in block_group 0 [ 50.705113][ T574] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 50.732680][ T578] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097873679417348 in block_group 0 [ 50.750998][ T578] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 50.762753][ T578] EXT4-fs error (device loop0): ext4_write_end:1367: inode #18: comm syz-executor.0: mark_inode_dirty error [ 50.792018][ T9] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm kworker/u4:1: Invalid inode table block 6286097877272143512 in block_group 0 [ 50.885943][ T580] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 50.912291][ T584] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm syz-executor.0: Invalid inode table block 6286097877272143512 in block_group 0 [ 50.941051][ T584] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5952: Corrupt filesystem [ 50.955941][ T584] EXT4-fs error (device loop0): ext4_write_end:1367: inode #18: comm syz-executor.0: mark_inode_dirty error [ 50.976940][ T9] EXT4-fs error (device loop0): __ext4_get_inode_loc:4444: comm kworker/u4:1: Invalid inode table block 6286097877272143512 in block_group 0 [ 51.065506][ T589] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 51.102801][ T593] EXT4-fs error (device loop0): ext4_map_blocks:630: inode #2: block 16: comm syz-executor.0: lblock 0 mapped to illegal pblock 16 (length 1) [ 51.120660][ T593] EXT4-fs error (device loop0): ext4_map_blocks:630: inode #2: block 16: comm syz-executor.0: lblock 0 mapped to illegal pblock 16 (length 1) [ 51.225163][ T595] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 51.249780][ T599] EXT4-fs error (device loop0): ext4_get_group_desc:277: comm syz-executor.0: block_group >= groups_count - block_group = 4294963226, groups_count = 1 [ 51.268569][ T599] ================================================================== [ 51.277298][ T599] BUG: KASAN: null-ptr-deref in _raw_spin_lock+0x87/0xf0 [ 51.284524][ T599] Write of size 4 at addr 0000000000000000 by task syz-executor.0/599 [ 51.293037][ T599] [ 51.295404][ T599] CPU: 0 PID: 599 Comm: syz-executor.0 Not tainted syzkaller #0 [ 51.303059][ T599] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 [ 51.313238][ T599] Call Trace: [ 51.316910][ T599] __dump_stack+0x21/0x24 [ 51.321455][ T599] dump_stack_lvl+0x1a7/0x208 [ 51.326530][ T599] ? thaw_kernel_threads+0x220/0x220 [ 51.332328][ T599] ? show_regs_print_info+0x18/0x18 [ 51.338906][ T599] ? _raw_spin_lock+0x87/0xf0 [ 51.343993][ T599] kasan_report+0xd8/0x130 [ 51.348782][ T599] ? _raw_spin_lock+0x87/0xf0 [ 51.353873][ T599] kasan_check_range+0x249/0x2a0 [ 51.359259][ T599] __kasan_check_write+0x14/0x20 [ 51.364944][ T599] _raw_spin_lock+0x87/0xf0 [ 51.370448][ T599] ? _raw_spin_trylock_bh+0x150/0x150 [ 51.376850][ T599] ext4_mb_new_blocks+0x1578/0x4340 [ 51.383051][ T599] ? __kmalloc+0x1a4/0x330 [ 51.388282][ T599] ? memset+0x35/0x40 [ 51.392628][ T599] ? ext4_mb_pa_callback+0xd0/0xd0 [ 51.398797][ T599] ? ext4_ext_find_goal+0x11d/0x200 [ 51.404921][ T599] ext4_ext_map_blocks+0x1679/0x5dd0 [ 51.410912][ T599] ? stack_trace_save+0xa6/0xf0 [ 51.417011][ T599] ? stack_trace_snprint+0xf0/0xf0 [ 51.422992][ T599] ? __kasan_slab_alloc+0xcf/0xf0 [ 51.428523][ T599] ? ext4_ext_release+0x10/0x10 [ 51.434025][ T599] ? alloc_buffer_head+0x26/0x120 [ 51.439213][ T599] ? ext4_try_to_write_inline_data+0x828/0x11f0 [ 51.445699][ T599] ext4_map_blocks+0x985/0x1bd0 [ 51.451300][ T599] ? ext4_issue_zeroout+0x1a0/0x1a0 [ 51.456768][ T599] _ext4_get_block+0x1d1/0x4e0 [ 51.462105][ T599] ? __kasan_check_write+0x14/0x20 [ 51.467691][ T599] ? _raw_spin_lock+0x94/0xf0 [ 51.472648][ T599] ? ext4_get_block+0x50/0x50 [ 51.477920][ T599] ? _raw_spin_unlock+0x4d/0x70 [ 51.483041][ T599] ? create_empty_buffers+0x480/0x4c0 [ 51.488546][ T599] ext4_get_block+0x39/0x50 [ 51.493410][ T599] __block_write_begin_int+0x502/0x1590 [ 51.499555][ T599] ? ext4_es_is_delayed+0x40/0x40 [ 51.505145][ T599] ? page_zero_new_buffers+0x500/0x500 [ 51.511243][ T599] ? down_write+0xb2/0x120 [ 51.515869][ T599] ? ext4_es_is_delayed+0x40/0x40 [ 51.521285][ T599] __block_write_begin+0x30/0x40 [ 51.526797][ T599] ext4_try_to_write_inline_data+0x828/0x11f0 [ 51.533530][ T599] ? PageUptodate+0xb0/0xb0 [ 51.539191][ T599] ? __kasan_check_read+0x11/0x20 [ 51.544843][ T599] ext4_write_begin+0x246/0x1690 [ 51.550267][ T599] ? write_boundary_block+0x150/0x150 [ 51.556120][ T599] ? __kasan_check_write+0x14/0x20 [ 51.561777][ T599] ? ext4_mark_iloc_dirty+0x2b9a/0x3e40 [ 51.568081][ T599] ? __getblk_gfp+0x3b/0x780 [ 51.573946][ T599] ? ext4_readahead+0x110/0x110 [ 51.579503][ T599] ? domain_dirty_limits+0x28f/0x3c0 [ 51.585725][ T599] ? __kasan_check_read+0x11/0x20 [ 51.591470][ T599] ? balance_dirty_pages+0x1dc3/0x2050 [ 51.598022][ T599] ? __kasan_check_read+0x11/0x20 [ 51.604201][ T599] ext4_da_write_begin+0x478/0xf10 [ 51.610260][ T599] ? ext4_set_page_dirty+0x1a0/0x1a0 [ 51.616534][ T599] ? ext4_write_end+0x9fc/0xf60 [ 51.622535][ T599] ? ktime_get_coarse_real_ts64+0xe1/0xf0 [ 51.630886][ T599] generic_perform_write+0x2ce/0x540 [ 51.637351][ T599] ? grab_cache_page_write_begin+0xb0/0xb0 [ 51.643982][ T599] ? down_write+0xb2/0x120 [ 51.649070][ T599] ? down_read_killable+0xe0/0xe0 [ 51.654464][ T599] ? generic_write_checks+0x3d4/0x480 [ 51.659984][ T599] ext4_buffered_write_iter+0x4b8/0x640 [ 51.665799][ T599] ext4_file_write_iter+0x53f/0x1980 [ 51.671882][ T599] ? unwind_get_return_address+0x4d/0x90 [ 51.678052][ T599] ? memset+0x35/0x40 [ 51.682092][ T599] ? fsnotify_set_children_dentry_flags+0x210/0x210 [ 51.690373][ T599] ? stack_trace_save+0xa6/0xf0 [ 51.695751][ T599] ? ext4_file_read_iter+0x530/0x530 [ 51.702068][ T599] ? __kasan_slab_alloc+0x69/0xf0 [ 51.707680][ T599] ? kvmalloc_node+0x88/0x130 [ 51.712822][ T599] ? iov_iter_kvec+0x3f/0x120 [ 51.718133][ T599] __kernel_write+0x535/0x910 [ 51.723206][ T599] ? elf_core_dump+0x2269/0x2cc0 [ 51.728696][ T599] ? do_coredump+0x1ba3/0x28e0 [ 51.733737][ T599] ? get_signal+0xf23/0x12e0 [ 51.739020][ T599] ? vfs_read+0xa60/0xa60 [ 51.745004][ T599] dump_emit+0x246/0x370 [ 51.749888][ T599] ? wait_for_dump_helpers+0x3a0/0x3a0 [ 51.755902][ T599] elf_core_dump+0x24cb/0x2cc0 [ 51.761145][ T599] ? load_elf_binary+0x28e0/0x28e0 [ 51.766792][ T599] ? __fsnotify_parent+0x6db/0x7c0 [ 51.772463][ T599] ? do_truncate+0x1c6/0x240 [ 51.778048][ T599] ? putname+0xfe/0x150 [ 51.783261][ T599] ? __kasan_check_read+0x11/0x20 [ 51.788577][ T599] ? unshare_files+0x1b3/0x250 [ 51.793759][ T599] ? __ia32_sys_unshare+0x40/0x40 [ 51.799195][ T599] do_coredump+0x1ba3/0x28e0 [ 51.804271][ T599] ? simple_acl_create+0x1c0/0x1c0 [ 51.809785][ T599] ? debug_smp_processor_id+0x17/0x20 [ 51.816037][ T599] ? kmem_cache_free+0x100/0x2d0 [ 51.821870][ T599] ? ____kasan_slab_free+0x130/0x160 [ 51.827865][ T599] ? get_signal+0xb98/0x12e0 [ 51.833965][ T599] ? kmem_cache_free+0x100/0x2d0 [ 51.840595][ T599] get_signal+0xf23/0x12e0 [ 51.845986][ T599] arch_do_signal_or_restart+0xe2/0x11d0 [ 51.853096][ T599] ? __bad_area_nosemaphore+0x2b0/0x420 [ 51.859558][ T599] ? down_read_trylock+0x106/0x160 [ 51.865475][ T599] ? __ia32_sys_rt_sigreturn+0x730/0x730 [ 51.872249][ T599] ? bad_area+0x6a/0x80 [ 51.877142][ T599] exit_to_user_mode_loop+0xa2/0xe0 [ 51.883503][ T599] exit_to_user_mode_prepare+0x76/0xa0 [ 51.890889][ T599] irqentry_exit_to_user_mode+0x9/0x10 [ 51.897678][ T599] irqentry_exit+0x12/0x60 [ 51.903061][ T599] exc_page_fault+0x67/0xc0 [ 51.909091][ T599] ? asm_exc_page_fault+0x8/0x30 [ 51.915222][ T599] asm_exc_page_fault+0x1e/0x30 [ 51.922367][ T599] RIP: 0033:0x0 [ 51.927404][ T599] Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. [ 51.941197][ T599] RSP: 002b:0000000020000473 EFLAGS: 00010217 [ 51.954410][ T599] RAX: 0000000000000000 RBX: 0000000000000058 RCX: 00007f0dc2efffb9 [ 51.968854][ T599] RDX: 00007f0dc2a91fa0 RSI: 0000000000000058 RDI: 00007f0dc2a91fa0 [ 51.992172][ T599] RBP: 00007f0dc2f75b38 R08: 0000000000000000 R09: 0000000000000058 [ 52.005166][ T599] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 52.021326][ T599] R13: 000000000000000b R14: 00007f0dc303ef80 R15: 00007ffd85661158 [ 52.033001][ T599] ================================================================== [ 52.042557][ T599] Disabling lock debugging due to kernel taint [ 52.049695][ T599] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 52.058859][ T599] #PF: supervisor write access in kernel mode [ 52.066858][ T599] #PF: error_code(0x0002) - not-present page [ 52.073172][ T599] PGD 1120d9067 P4D 1120d9067 PUD 11daab067 PMD 0 [ 52.081121][ T599] Oops: 0002 [#1] PREEMPT SMP KASAN [ 52.086702][ T599] CPU: 0 PID: 599 Comm: syz-executor.0 Tainted: G B syzkaller #0 [ 52.097115][ T599] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 [ 52.108438][ T599] RIP: 0010:_raw_spin_lock+0x9d/0xf0 [ 52.114264][ T599] Code: 44 24 20 00 00 00 00 48 89 df be 04 00 00 00 e8 c9 9e 1c fd 4c 89 f7 be 04 00 00 00 e8 bc 9e 1c fd 8b 44 24 20 b9 01 00 00 00 0f b1 0b 75 33 43 c6 44 27 04 f8 48 c7 04 24 0e 36 e0 45 4b c7 [ 52.135827][ T599] RSP: 0018:ffffc90001745e60 EFLAGS: 00010297 [ 52.142206][ T599] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 52.150713][ T599] RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc90001745e80 [ 52.159459][ T599] RBP: ffffc90001745ef0 R08: 0000000000000003 R09: 0000000000000004 [ 52.168983][ T599] R10: dffffc0000000000 R11: fffff520002e8bd0 R12: dffffc0000000000 [ 52.178233][ T599] R13: 1ffff11024379f70 R14: ffffc90001745e80 R15: 1ffff920002e8bcc [ 52.187372][ T599] FS: 00007f0dc2a926c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 52.197896][ T599] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.204944][ T599] CR2: 0000000000000000 CR3: 000000011d287000 CR4: 00000000003506b0 [ 52.214422][ T599] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.224124][ T599] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.233159][ T599] Call Trace: [ 52.236849][ T599] ? _raw_spin_trylock_bh+0x150/0x150 [ 52.242907][ T599] ext4_mb_new_blocks+0x1578/0x4340 [ 52.248934][ T599] ? __kmalloc+0x1a4/0x330 [ 52.253552][ T599] ? memset+0x35/0x40 [ 52.258139][ T599] ? ext4_mb_pa_callback+0xd0/0xd0 [ 52.263755][ T599] ? ext4_ext_find_goal+0x11d/0x200 [ 52.269708][ T599] ext4_ext_map_blocks+0x1679/0x5dd0 [ 52.275957][ T599] ? stack_trace_save+0xa6/0xf0 [ 52.281513][ T599] ? stack_trace_snprint+0xf0/0xf0 [ 52.286929][ T599] ? __kasan_slab_alloc+0xcf/0xf0 [ 52.292573][ T599] ? ext4_ext_release+0x10/0x10 [ 52.297925][ T599] ? alloc_buffer_head+0x26/0x120 [ 52.303322][ T599] ? ext4_try_to_write_inline_data+0x828/0x11f0 [ 52.310415][ T599] ext4_map_blocks+0x985/0x1bd0 [ 52.315992][ T599] ? ext4_issue_zeroout+0x1a0/0x1a0 [ 52.322249][ T599] _ext4_get_block+0x1d1/0x4e0 [ 52.327388][ T599] ? __kasan_check_write+0x14/0x20 [ 52.333402][ T599] ? _raw_spin_lock+0x94/0xf0 [ 52.339061][ T599] ? ext4_get_block+0x50/0x50 [ 52.344276][ T599] ? _raw_spin_unlock+0x4d/0x70 [ 52.349413][ T599] ? create_empty_buffers+0x480/0x4c0 [ 52.355055][ T599] ext4_get_block+0x39/0x50 [ 52.360099][ T599] __block_write_begin_int+0x502/0x1590 [ 52.366380][ T599] ? ext4_es_is_delayed+0x40/0x40 [ 52.372121][ T599] ? page_zero_new_buffers+0x500/0x500 [ 52.378620][ T599] ? down_write+0xb2/0x120 [ 52.383482][ T599] ? ext4_es_is_delayed+0x40/0x40 [ 52.389309][ T599] __block_write_begin+0x30/0x40 [ 52.395001][ T599] ext4_try_to_write_inline_data+0x828/0x11f0 [ 52.401429][ T599] ? PageUptodate+0xb0/0xb0 [ 52.406310][ T599] ? __kasan_check_read+0x11/0x20 [ 52.412303][ T599] ext4_write_begin+0x246/0x1690 [ 52.418496][ T599] ? write_boundary_block+0x150/0x150 [ 52.425314][ T599] ? __kasan_check_write+0x14/0x20 [ 52.431426][ T599] ? ext4_mark_iloc_dirty+0x2b9a/0x3e40 [ 52.437075][ T599] ? __getblk_gfp+0x3b/0x780 [ 52.441854][ T599] ? ext4_readahead+0x110/0x110 [ 52.447241][ T599] ? domain_dirty_limits+0x28f/0x3c0 [ 52.452801][ T599] ? __kasan_check_read+0x11/0x20 [ 52.457968][ T599] ? balance_dirty_pages+0x1dc3/0x2050 [ 52.463625][ T599] ? __kasan_check_read+0x11/0x20 [ 52.469119][ T599] ext4_da_write_begin+0x478/0xf10 [ 52.475077][ T599] ? ext4_set_page_dirty+0x1a0/0x1a0 [ 52.480783][ T599] ? ext4_write_end+0x9fc/0xf60 [ 52.486468][ T599] ? ktime_get_coarse_real_ts64+0xe1/0xf0 [ 52.492733][ T599] generic_perform_write+0x2ce/0x540 [ 52.498478][ T599] ? grab_cache_page_write_begin+0xb0/0xb0 [ 52.504309][ T599] ? down_write+0xb2/0x120 [ 52.509354][ T599] ? down_read_killable+0xe0/0xe0 [ 52.515088][ T599] ? generic_write_checks+0x3d4/0x480 [ 52.520969][ T599] ext4_buffered_write_iter+0x4b8/0x640 [ 52.527096][ T599] ext4_file_write_iter+0x53f/0x1980 [ 52.532970][ T599] ? unwind_get_return_address+0x4d/0x90 [ 52.539501][ T599] ? memset+0x35/0x40 [ 52.543682][ T599] ? fsnotify_set_children_dentry_flags+0x210/0x210 [ 52.551151][ T599] ? stack_trace_save+0xa6/0xf0 [ 52.556457][ T599] ? ext4_file_read_iter+0x530/0x530 [ 52.562193][ T599] ? __kasan_slab_alloc+0x69/0xf0 [ 52.567501][ T599] ? kvmalloc_node+0x88/0x130 [ 52.572584][ T599] ? iov_iter_kvec+0x3f/0x120 [ 52.577444][ T599] __kernel_write+0x535/0x910 [ 52.582315][ T599] ? elf_core_dump+0x2269/0x2cc0 [ 52.588405][ T599] ? do_coredump+0x1ba3/0x28e0 [ 52.594473][ T599] ? get_signal+0xf23/0x12e0 [ 52.599613][ T599] ? vfs_read+0xa60/0xa60 [ 52.604072][ T599] dump_emit+0x246/0x370 [ 52.609110][ T599] ? wait_for_dump_helpers+0x3a0/0x3a0 [ 52.615297][ T599] elf_core_dump+0x24cb/0x2cc0 [ 52.620267][ T599] ? load_elf_binary+0x28e0/0x28e0 [ 52.625793][ T599] ? __fsnotify_parent+0x6db/0x7c0 [ 52.631639][ T599] ? do_truncate+0x1c6/0x240 [ 52.636514][ T599] ? putname+0xfe/0x150 [ 52.641314][ T599] ? __kasan_check_read+0x11/0x20 [ 52.647108][ T599] ? unshare_files+0x1b3/0x250 [ 52.652226][ T599] ? __ia32_sys_unshare+0x40/0x40 [ 52.657536][ T599] do_coredump+0x1ba3/0x28e0 [ 52.662578][ T599] ? simple_acl_create+0x1c0/0x1c0 [ 52.667890][ T599] ? debug_smp_processor_id+0x17/0x20 [ 52.674331][ T599] ? kmem_cache_free+0x100/0x2d0 [ 52.679544][ T599] ? ____kasan_slab_free+0x130/0x160 [ 52.685285][ T599] ? get_signal+0xb98/0x12e0 [ 52.690533][ T599] ? kmem_cache_free+0x100/0x2d0 [ 52.695873][ T599] get_signal+0xf23/0x12e0 [ 52.700760][ T599] arch_do_signal_or_restart+0xe2/0x11d0 [ 52.707068][ T599] ? __bad_area_nosemaphore+0x2b0/0x420 [ 52.712972][ T599] ? down_read_trylock+0x106/0x160 [ 52.718433][ T599] ? __ia32_sys_rt_sigreturn+0x730/0x730 [ 52.724428][ T599] ? bad_area+0x6a/0x80 [ 52.728995][ T599] exit_to_user_mode_loop+0xa2/0xe0 [ 52.734993][ T599] exit_to_user_mode_prepare+0x76/0xa0 [ 52.741170][ T599] irqentry_exit_to_user_mode+0x9/0x10 [ 52.747110][ T599] irqentry_exit+0x12/0x60 [ 52.751907][ T599] exc_page_fault+0x67/0xc0 [ 52.756686][ T599] ? asm_exc_page_fault+0x8/0x30 [ 52.761839][ T599] asm_exc_page_fault+0x1e/0x30 [ 52.766878][ T599] RIP: 0033:0x0 [ 52.770601][ T599] Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. [ 52.779047][ T599] RSP: 002b:0000000020000473 EFLAGS: 00010217 [ 52.785739][ T599] RAX: 0000000000000000 RBX: 0000000000000058 RCX: 00007f0dc2efffb9 [ 52.793734][ T599] RDX: 00007f0dc2a91fa0 RSI: 0000000000000058 RDI: 00007f0dc2a91fa0 [ 52.802670][ T599] RBP: 00007f0dc2f75b38 R08: 0000000000000000 R09: 0000000000000058 [ 52.811049][ T599] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 52.819846][ T599] R13: 000000000000000b R14: 00007f0dc303ef80 R15: 00007ffd85661158 [ 52.829292][ T599] Modules linked in: [ 52.833689][ T599] CR2: 0000000000000000 [ 52.838431][ T599] ---[ end trace a360fc5071d0977c ]--- [ 52.844424][ T599] RIP: 0010:_raw_spin_lock+0x9d/0xf0 [ 52.850364][ T599] Code: 44 24 20 00 00 00 00 48 89 df be 04 00 00 00 e8 c9 9e 1c fd 4c 89 f7 be 04 00 00 00 e8 bc 9e 1c fd 8b 44 24 20 b9 01 00 00 00 0f b1 0b 75 33 43 c6 44 27 04 f8 48 c7 04 24 0e 36 e0 45 4b c7 [ 52.870699][ T599] RSP: 0018:ffffc90001745e60 EFLAGS: 00010297 [ 52.877549][ T599] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 52.885973][ T599] RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc90001745e80 [ 52.895216][ T599] RBP: ffffc90001745ef0 R08: 0000000000000003 R09: 0000000000000004 [ 52.903777][ T599] R10: dffffc0000000000 R11: fffff520002e8bd0 R12: dffffc0000000000 [ 52.912561][ T599] R13: 1ffff11024379f70 R14: ffffc90001745e80 R15: 1ffff920002e8bcc [ 52.921797][ T599] FS: 00007f0dc2a926c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 52.932214][ T599] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.939907][ T599] CR2: 0000000000000000 CR3: 000000011d287000 CR4: 00000000003506b0 [ 52.948448][ T599] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.957492][ T599] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.966117][ T599] Kernel panic - not syncing: Fatal exception [ 52.973146][ T599] Kernel Offset: disabled [ 52.977838][ T599] Rebooting in 86400 seconds..