gfs2_fill_super+0xdac/0x19e0 [ 143.396943][ T6865] get_tree_bdev+0x358/0x544 [ 143.397639][ T6865] gfs2_get_tree+0x54/0x1b4 [ 143.398279][ T6865] vfs_get_tree+0x90/0x274 [ 143.398913][ T6865] do_new_mount+0x228/0x810 [ 143.399561][ T6865] path_mount+0x5b4/0x1000 [ 143.400264][ T6865] __arm64_sys_mount+0x514/0x5e4 [ 143.401019][ T6865] invoke_syscall+0x98/0x2b8 [ 143.401696][ T6865] el0_svc_common+0x138/0x258 [ 143.402385][ T6865] do_el0_svc+0x58/0x14c [ 143.403005][ T6865] el0_svc+0x78/0x1e0 [ 143.403598][ T6865] el0t_64_sync_handler+0xcc/0xe4 [ 143.404291][ T6865] el0t_64_sync+0x1a0/0x1a4 [ 143.419252][ T6865] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 143.421293][ T6865] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 143.424424][ T6865] syz.0.539 (6865): drop_caches: 2 [ 143.552526][ T6867] loop3: detected capacity change from 0 to 32768 [ 143.621247][ T6867] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 143.622546][ T6867] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 143.625524][ T6867] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 143.627151][ T4151] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 143.628156][ T4151] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 143.671893][ T4151] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 43ms [ 143.677476][ T4151] gfs2: fsid=syz:syz.0: jid=0: Done [ 143.678368][ T6867] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 143.686724][ T6867] syz.3.540 (6867): drop_caches: 2 [ 143.687574][ T6869] loop2: detected capacity change from 0 to 32768 [ 143.731279][ T6869] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 143.732511][ T6869] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 143.735202][ T6869] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 143.736827][ T4856] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 143.737854][ T4856] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 143.792537][ T4856] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 54ms [ 143.793775][ T4856] gfs2: fsid=syz:syz.0: jid=0: Done [ 143.799253][ T6869] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 143.803464][ T6869] syz.2.541 (6869): drop_caches: 2 [ 143.848788][ T6873] loop4: detected capacity change from 0 to 32768 [ 143.852802][ T6875] loop0: detected capacity change from 0 to 32768 [ 143.881940][ T6875] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 143.883171][ T6875] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 143.886538][ T6875] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 143.890145][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 143.891094][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 143.893930][ T6873] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 143.895102][ T6873] CPU: 0 PID: 6873 Comm: syz.4.543 Not tainted syzkaller #0 [ 143.896193][ T6873] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 143.897647][ T6873] Call trace: [ 143.898102][ T6873] dump_backtrace+0x0/0x43c [ 143.898760][ T6873] show_stack+0x2c/0x3c [ 143.899375][ T6873] __dump_stack+0x30/0x40 [ 143.900020][ T6873] dump_stack_lvl+0xf8/0x160 [ 143.900651][ T6873] dump_stack+0x1c/0x5c [ 143.901199][ T6873] sysfs_create_dir_ns+0x22c/0x24c [ 143.901915][ T6873] kobject_add_internal+0x590/0xc54 [ 143.902629][ T6873] kobject_init_and_add+0x118/0x17c [ 143.903353][ T6873] gfs2_sys_fs_add+0x1dc/0x3d8 [ 143.904059][ T6873] gfs2_fill_super+0xdac/0x19e0 [ 143.904752][ T6873] get_tree_bdev+0x358/0x544 [ 143.905408][ T6873] gfs2_get_tree+0x54/0x1b4 [ 143.906052][ T6873] vfs_get_tree+0x90/0x274 [ 143.906660][ T6873] do_new_mount+0x228/0x810 [ 143.907276][ T6873] path_mount+0x5b4/0x1000 [ 143.907874][ T6873] __arm64_sys_mount+0x514/0x5e4 [ 143.908546][ T6873] invoke_syscall+0x98/0x2b8 [ 143.909199][ T6873] el0_svc_common+0x138/0x258 [ 143.909848][ T6873] do_el0_svc+0x58/0x14c [ 143.910433][ T6873] el0_svc+0x78/0x1e0 [ 143.910970][ T6873] el0t_64_sync_handler+0xcc/0xe4 [ 143.911677][ T6873] el0t_64_sync+0x1a0/0x1a4 [ 143.938381][ T6873] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 143.940004][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 48ms [ 143.942066][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 143.942860][ T6875] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 143.943127][ T6873] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 143.948327][ T6875] syz.0.544 (6875): drop_caches: 2 [ 143.995517][ T6871] loop1: detected capacity change from 0 to 32768 [ 144.046609][ T6877] loop3: detected capacity change from 0 to 32768 [ 144.093741][ T6877] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 144.095215][ T6877] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 144.101986][ T6871] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 144.103125][ T6871] CPU: 0 PID: 6871 Comm: syz.1.542 Not tainted syzkaller #0 [ 144.103590][ T6877] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 144.104240][ T6871] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 144.106226][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 144.106876][ T6871] Call trace: [ 144.108002][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 144.108490][ T6871] dump_backtrace+0x0/0x43c [ 144.110173][ T6871] show_stack+0x2c/0x3c [ 144.110829][ T6871] __dump_stack+0x30/0x40 [ 144.111459][ T6871] dump_stack_lvl+0xf8/0x160 [ 144.112184][ T6871] dump_stack+0x1c/0x5c [ 144.112769][ T6871] sysfs_create_dir_ns+0x22c/0x24c [ 144.113520][ T6871] kobject_add_internal+0x590/0xc54 [ 144.114324][ T6871] kobject_init_and_add+0x118/0x17c [ 144.115129][ T6871] gfs2_sys_fs_add+0x1dc/0x3d8 [ 144.115776][ T6871] gfs2_fill_super+0xdac/0x19e0 [ 144.116486][ T6871] get_tree_bdev+0x358/0x544 [ 144.117170][ T6871] gfs2_get_tree+0x54/0x1b4 [ 144.117846][ T6871] vfs_get_tree+0x90/0x274 [ 144.118476][ T6871] do_new_mount+0x228/0x810 [ 144.119140][ T6871] path_mount+0x5b4/0x1000 [ 144.119762][ T6871] __arm64_sys_mount+0x514/0x5e4 [ 144.120504][ T6871] invoke_syscall+0x98/0x2b8 [ 144.121170][ T6871] el0_svc_common+0x138/0x258 [ 144.121866][ T6871] do_el0_svc+0x58/0x14c [ 144.122444][ T6871] el0_svc+0x78/0x1e0 [ 144.123044][ T6871] el0t_64_sync_handler+0xcc/0xe4 [ 144.123740][ T6871] el0t_64_sync+0x1a0/0x1a4 [ 144.156495][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 48ms [ 144.157646][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 144.158415][ T6877] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 144.163973][ T6877] syz.3.545 (6877): drop_caches: 2 [ 144.170326][ T6873] syz.4.543 (6873): drop_caches: 2 [ 144.180647][ T6871] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 144.182671][ T6871] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 144.187665][ T6871] syz.1.542 (6871): drop_caches: 2 [ 144.210454][ T6879] loop2: detected capacity change from 0 to 32768 [ 144.309092][ T6881] loop0: detected capacity change from 0 to 32768 [ 144.324186][ T6879] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 144.325388][ T6879] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 144.328177][ T6879] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 144.330738][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 144.331730][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 144.364861][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 33ms [ 144.366068][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 144.366872][ T6879] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 144.371756][ T6879] syz.2.546 (6879): drop_caches: 2 [ 144.383605][ T6881] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 144.384777][ T6881] CPU: 1 PID: 6881 Comm: syz.0.547 Not tainted syzkaller #0 [ 144.386012][ T6881] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 144.387509][ T6881] Call trace: [ 144.388046][ T6881] dump_backtrace+0x0/0x43c [ 144.388716][ T6881] show_stack+0x2c/0x3c [ 144.389307][ T6881] __dump_stack+0x30/0x40 [ 144.390018][ T6881] dump_stack_lvl+0xf8/0x160 [ 144.390665][ T6881] dump_stack+0x1c/0x5c [ 144.391285][ T6881] sysfs_create_dir_ns+0x22c/0x24c [ 144.392026][ T6881] kobject_add_internal+0x590/0xc54 [ 144.392820][ T6881] kobject_init_and_add+0x118/0x17c [ 144.393555][ T6881] gfs2_sys_fs_add+0x1dc/0x3d8 [ 144.394256][ T6881] gfs2_fill_super+0xdac/0x19e0 [ 144.394961][ T6881] get_tree_bdev+0x358/0x544 [ 144.395621][ T6881] gfs2_get_tree+0x54/0x1b4 [ 144.396239][ T6881] vfs_get_tree+0x90/0x274 [ 144.396852][ T6881] do_new_mount+0x228/0x810 [ 144.397543][ T6881] path_mount+0x5b4/0x1000 [ 144.398174][ T6881] __arm64_sys_mount+0x514/0x5e4 [ 144.398921][ T6881] invoke_syscall+0x98/0x2b8 [ 144.399614][ T6881] el0_svc_common+0x138/0x258 [ 144.400255][ T6881] do_el0_svc+0x58/0x14c [ 144.400789][ T6881] el0_svc+0x78/0x1e0 [ 144.401353][ T6881] el0t_64_sync_handler+0xcc/0xe4 [ 144.402030][ T6881] el0t_64_sync+0x1a0/0x1a4 [ 144.419389][ T6881] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 144.421544][ T6881] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 144.445387][ T6881] syz.0.547 (6881): drop_caches: 2 [ 144.643483][ T6885] loop1: detected capacity change from 0 to 32768 [ 144.666714][ T6887] loop3: detected capacity change from 0 to 32768 [ 144.672713][ T6883] loop4: detected capacity change from 0 to 32768 [ 144.703011][ T6885] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 144.704205][ T6885] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 144.704919][ T6883] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 144.706392][ T6883] CPU: 1 PID: 6883 Comm: syz.4.549 Not tainted syzkaller #0 [ 144.707415][ T6883] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 144.708814][ T6883] Call trace: [ 144.709303][ T6883] dump_backtrace+0x0/0x43c [ 144.710006][ T6883] show_stack+0x2c/0x3c [ 144.710609][ T6883] __dump_stack+0x30/0x40 [ 144.711277][ T6883] dump_stack_lvl+0xf8/0x160 [ 144.711911][ T6883] dump_stack+0x1c/0x5c [ 144.712497][ T6883] sysfs_create_dir_ns+0x22c/0x24c [ 144.713250][ T6883] kobject_add_internal+0x590/0xc54 [ 144.713969][ T6883] kobject_init_and_add+0x118/0x17c [ 144.714730][ T6883] gfs2_sys_fs_add+0x1dc/0x3d8 [ 144.715421][ T6883] gfs2_fill_super+0xdac/0x19e0 [ 144.716162][ T6883] get_tree_bdev+0x358/0x544 [ 144.716834][ T6883] gfs2_get_tree+0x54/0x1b4 [ 144.717521][ T6883] vfs_get_tree+0x90/0x274 [ 144.718112][ T6883] do_new_mount+0x228/0x810 [ 144.718758][ T6883] path_mount+0x5b4/0x1000 [ 144.719413][ T6883] __arm64_sys_mount+0x514/0x5e4 [ 144.720157][ T6883] invoke_syscall+0x98/0x2b8 [ 144.720858][ T6883] el0_svc_common+0x138/0x258 [ 144.721549][ T6883] do_el0_svc+0x58/0x14c [ 144.722159][ T6883] el0_svc+0x78/0x1e0 [ 144.722729][ T6883] el0t_64_sync_handler+0xcc/0xe4 [ 144.723405][ T6883] el0t_64_sync+0x1a0/0x1a4 [ 144.731301][ T6887] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 144.732457][ T6887] CPU: 0 PID: 6887 Comm: syz.3.548 Not tainted syzkaller #0 [ 144.733499][ T6887] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 144.734878][ T6887] Call trace: [ 144.735318][ T6887] dump_backtrace+0x0/0x43c [ 144.735942][ T6887] show_stack+0x2c/0x3c [ 144.736489][ T6887] __dump_stack+0x30/0x40 [ 144.737067][ T6887] dump_stack_lvl+0xf8/0x160 [ 144.737672][ T6887] dump_stack+0x1c/0x5c [ 144.738246][ T6887] sysfs_create_dir_ns+0x22c/0x24c [ 144.738980][ T6887] kobject_add_internal+0x590/0xc54 [ 144.739688][ T6887] kobject_init_and_add+0x118/0x17c [ 144.740360][ T6887] gfs2_sys_fs_add+0x1dc/0x3d8 [ 144.741032][ T6887] gfs2_fill_super+0xdac/0x19e0 [ 144.741713][ T6887] get_tree_bdev+0x358/0x544 [ 144.742364][ T6887] gfs2_get_tree+0x54/0x1b4 [ 144.742994][ T6887] vfs_get_tree+0x90/0x274 [ 144.743610][ T6887] do_new_mount+0x228/0x810 [ 144.744265][ T6887] path_mount+0x5b4/0x1000 [ 144.744859][ T6887] __arm64_sys_mount+0x514/0x5e4 [ 144.744859][ T6883] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 144.744879][ T6883] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 144.745517][ T6887] invoke_syscall+0x98/0x2b8 [ 144.748905][ T6887] el0_svc_common+0x138/0x258 [ 144.749530][ T6887] do_el0_svc+0x58/0x14c [ 144.750135][ T6887] el0_svc+0x78/0x1e0 [ 144.750758][ T6887] el0t_64_sync_handler+0xcc/0xe4 [ 144.751523][ T6887] el0t_64_sync+0x1a0/0x1a4 [ 144.753192][ T6885] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 144.754527][ T6883] syz.4.549 (6883): drop_caches: 2 [ 144.755907][ T4219] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 144.756909][ T4219] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 144.799465][ T4219] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 42ms [ 144.800742][ T4219] gfs2: fsid=syz:syz.0: jid=0: Done [ 144.801597][ T6885] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 144.806951][ T6887] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 144.807025][ T6885] syz.1.550 (6885): drop_caches: 2 [ 144.809013][ T6887] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 144.832331][ T6889] loop2: detected capacity change from 0 to 32768 [ 144.836137][ T6891] loop0: detected capacity change from 0 to 32768 [ 144.870835][ T6891] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 144.871965][ T6891] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 144.874529][ T6891] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 144.877553][ T6889] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 144.878570][ T6889] CPU: 1 PID: 6889 Comm: syz.2.551 Not tainted syzkaller #0 [ 144.879753][ T6889] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 144.881285][ T6889] Call trace: [ 144.881781][ T6889] dump_backtrace+0x0/0x43c [ 144.882455][ T6889] show_stack+0x2c/0x3c [ 144.883061][ T6889] __dump_stack+0x30/0x40 [ 144.883707][ T6889] dump_stack_lvl+0xf8/0x160 [ 144.884371][ T6889] dump_stack+0x1c/0x5c [ 144.884993][ T6889] sysfs_create_dir_ns+0x22c/0x24c [ 144.885742][ T6889] kobject_add_internal+0x590/0xc54 [ 144.886501][ T6889] kobject_init_and_add+0x118/0x17c [ 144.887225][ T6889] gfs2_sys_fs_add+0x1dc/0x3d8 [ 144.887941][ T6889] gfs2_fill_super+0xdac/0x19e0 [ 144.888633][ T6889] get_tree_bdev+0x358/0x544 [ 144.889301][ T6889] gfs2_get_tree+0x54/0x1b4 [ 144.889929][ T6889] vfs_get_tree+0x90/0x274 [ 144.890526][ T6889] do_new_mount+0x228/0x810 [ 144.891192][ T6889] path_mount+0x5b4/0x1000 [ 144.891839][ T6889] __arm64_sys_mount+0x514/0x5e4 [ 144.892548][ T6889] invoke_syscall+0x98/0x2b8 [ 144.893212][ T6889] el0_svc_common+0x138/0x258 [ 144.893876][ T6889] do_el0_svc+0x58/0x14c [ 144.894437][ T6889] el0_svc+0x78/0x1e0 [ 144.895012][ T6889] el0t_64_sync_handler+0xcc/0xe4 [ 144.895735][ T6889] el0t_64_sync+0x1a0/0x1a4 [ 144.901698][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 144.902701][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 144.938370][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 35ms [ 144.942409][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 144.949255][ T6891] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 144.954485][ T6891] syz.0.552 (6891): drop_caches: 2 [ 144.969626][ T6889] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 144.971712][ T6889] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 144.989406][ T6889] syz.2.551 (6889): drop_caches: 2 [ 145.045879][ T6887] syz.3.548 (6887): drop_caches: 2 [ 145.130688][ T6893] loop4: detected capacity change from 0 to 32768 [ 145.161129][ T6893] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 145.162339][ T6893] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 145.164961][ T6893] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 145.172302][ T4159] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 145.173348][ T4159] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 145.209341][ T4159] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 35ms [ 145.210567][ T4159] gfs2: fsid=syz:syz.0: jid=0: Done [ 145.211394][ T6893] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 145.216116][ T6893] syz.4.553 (6893): drop_caches: 2 [ 145.380591][ T6895] loop1: detected capacity change from 0 to 32768 [ 145.389699][ T6895] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 145.390974][ T6895] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 145.406324][ T6898] loop2: detected capacity change from 0 to 32768 [ 145.408400][ T6895] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 145.412174][ T4159] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 145.413183][ T4159] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 145.451539][ T4159] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 38ms [ 145.452723][ T4159] gfs2: fsid=syz:syz.0: jid=0: Done [ 145.453524][ T6895] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 145.458558][ T6895] syz.1.554 (6895): drop_caches: 2 [ 145.472141][ T6898] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 145.473298][ T6898] CPU: 1 PID: 6898 Comm: syz.2.556 Not tainted syzkaller #0 [ 145.474474][ T6898] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 145.476048][ T6898] Call trace: [ 145.476537][ T6898] dump_backtrace+0x0/0x43c [ 145.477254][ T6898] show_stack+0x2c/0x3c [ 145.477880][ T6898] __dump_stack+0x30/0x40 [ 145.478590][ T6898] dump_stack_lvl+0xf8/0x160 [ 145.479273][ T6898] dump_stack+0x1c/0x5c [ 145.479870][ T6898] sysfs_create_dir_ns+0x22c/0x24c [ 145.480609][ T6898] kobject_add_internal+0x590/0xc54 [ 145.481377][ T6898] kobject_init_and_add+0x118/0x17c [ 145.482175][ T6898] gfs2_sys_fs_add+0x1dc/0x3d8 [ 145.482875][ T6898] gfs2_fill_super+0xdac/0x19e0 [ 145.483676][ T6898] get_tree_bdev+0x358/0x544 [ 145.484353][ T6898] gfs2_get_tree+0x54/0x1b4 [ 145.485023][ T6898] vfs_get_tree+0x90/0x274 [ 145.485726][ T6898] do_new_mount+0x228/0x810 [ 145.486413][ T6898] path_mount+0x5b4/0x1000 [ 145.487105][ T6898] __arm64_sys_mount+0x514/0x5e4 [ 145.487880][ T6898] invoke_syscall+0x98/0x2b8 [ 145.488523][ T6898] el0_svc_common+0x138/0x258 [ 145.489240][ T6898] do_el0_svc+0x58/0x14c [ 145.489861][ T6898] el0_svc+0x78/0x1e0 [ 145.490433][ T6898] el0t_64_sync_handler+0xcc/0xe4 [ 145.491163][ T6898] el0t_64_sync+0x1a0/0x1a4 [ 145.491439][ T6899] syz.0.555 (6899): drop_caches: 2 [ 145.524939][ T6901] loop3: detected capacity change from 0 to 32768 [ 145.527944][ T6898] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 145.530423][ T6898] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 145.561568][ T6901] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 145.562831][ T6901] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 145.572582][ T6901] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 3ms [ 145.587335][ T4857] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 145.588314][ T4857] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 145.629369][ T4857] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 41ms [ 145.630604][ T4857] gfs2: fsid=syz:syz.0: jid=0: Done [ 145.631454][ T6901] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 145.656056][ T6901] syz.3.557 (6901): drop_caches: 2 [ 145.681113][ T6898] syz.2.556 (6898): drop_caches: 2 [ 145.806937][ T6903] loop4: detected capacity change from 0 to 32768 [ 145.881112][ T6903] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 145.882382][ T6903] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 145.886384][ T6903] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 145.892218][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 145.893263][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 145.936480][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 43ms [ 145.937807][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 145.938666][ T6903] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 145.943767][ T6903] syz.4.558 (6903): drop_caches: 2 [ 145.962543][ T6907] loop0: detected capacity change from 0 to 32768 [ 145.966721][ T6906] loop1: detected capacity change from 0 to 32768 [ 146.003449][ T6906] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 146.004747][ T6906] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 146.006015][ T6907] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 146.007066][ T6907] CPU: 0 PID: 6907 Comm: syz.0.560 Not tainted syzkaller #0 [ 146.008067][ T6907] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 146.009485][ T6907] Call trace: [ 146.009935][ T6907] dump_backtrace+0x0/0x43c [ 146.010593][ T6907] show_stack+0x2c/0x3c [ 146.011195][ T6907] __dump_stack+0x30/0x40 [ 146.011811][ T6907] dump_stack_lvl+0xf8/0x160 [ 146.012461][ T6907] dump_stack+0x1c/0x5c [ 146.013063][ T6907] sysfs_create_dir_ns+0x22c/0x24c [ 146.013800][ T6907] kobject_add_internal+0x590/0xc54 [ 146.014545][ T6907] kobject_init_and_add+0x118/0x17c [ 146.015301][ T6907] gfs2_sys_fs_add+0x1dc/0x3d8 [ 146.015991][ T6907] gfs2_fill_super+0xdac/0x19e0 [ 146.016642][ T6907] get_tree_bdev+0x358/0x544 [ 146.017281][ T6907] gfs2_get_tree+0x54/0x1b4 [ 146.017914][ T6907] vfs_get_tree+0x90/0x274 [ 146.018521][ T6907] do_new_mount+0x228/0x810 [ 146.019131][ T6907] path_mount+0x5b4/0x1000 [ 146.019738][ T6907] __arm64_sys_mount+0x514/0x5e4 [ 146.020424][ T6907] invoke_syscall+0x98/0x2b8 [ 146.021097][ T6907] el0_svc_common+0x138/0x258 [ 146.021717][ T6907] do_el0_svc+0x58/0x14c [ 146.022307][ T6907] el0_svc+0x78/0x1e0 [ 146.022862][ T6907] el0t_64_sync_handler+0xcc/0xe4 [ 146.023576][ T6907] el0t_64_sync+0x1a0/0x1a4 [ 146.037543][ T6906] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 146.040384][ T4856] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 146.041406][ T4856] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 146.072239][ T6907] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 146.074287][ T6907] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 146.083809][ T4856] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 42ms [ 146.084967][ T4856] gfs2: fsid=syz:syz.0: jid=0: Done [ 146.085726][ T6906] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 146.090687][ T6906] syz.1.559 (6906): drop_caches: 2 [ 146.100384][ T6907] syz.0.560 (6907): drop_caches: 2 [ 146.215874][ T6909] loop2: detected capacity change from 0 to 32768 [ 146.235852][ T6911] loop3: detected capacity change from 0 to 32768 [ 146.259627][ T6911] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 146.260781][ T6911] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 146.269385][ T6911] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 146.279657][ T4857] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 146.280615][ T4857] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 146.300711][ T6909] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 146.301732][ T6909] CPU: 0 PID: 6909 Comm: syz.2.562 Not tainted syzkaller #0 [ 146.302748][ T6909] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 146.304121][ T6909] Call trace: [ 146.304529][ T6909] dump_backtrace+0x0/0x43c [ 146.305099][ T6909] show_stack+0x2c/0x3c [ 146.305650][ T6909] __dump_stack+0x30/0x40 [ 146.306270][ T6909] dump_stack_lvl+0xf8/0x160 [ 146.306897][ T6909] dump_stack+0x1c/0x5c [ 146.307449][ T6909] sysfs_create_dir_ns+0x22c/0x24c [ 146.308140][ T6909] kobject_add_internal+0x590/0xc54 [ 146.308893][ T6909] kobject_init_and_add+0x118/0x17c [ 146.309681][ T6909] gfs2_sys_fs_add+0x1dc/0x3d8 [ 146.310308][ T6909] gfs2_fill_super+0xdac/0x19e0 [ 146.310971][ T6909] get_tree_bdev+0x358/0x544 [ 146.311600][ T6909] gfs2_get_tree+0x54/0x1b4 [ 146.312190][ T6909] vfs_get_tree+0x90/0x274 [ 146.312770][ T6909] do_new_mount+0x228/0x810 [ 146.313362][ T6909] path_mount+0x5b4/0x1000 [ 146.313950][ T6909] __arm64_sys_mount+0x514/0x5e4 [ 146.314637][ T6909] invoke_syscall+0x98/0x2b8 [ 146.315326][ T6909] el0_svc_common+0x138/0x258 [ 146.315982][ T6909] do_el0_svc+0x58/0x14c [ 146.316601][ T6909] el0_svc+0x78/0x1e0 [ 146.317137][ T6909] el0t_64_sync_handler+0xcc/0xe4 [ 146.317888][ T6909] el0t_64_sync+0x1a0/0x1a4 [ 146.329608][ T4857] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 48ms [ 146.330825][ T4857] gfs2: fsid=syz:syz.0: jid=0: Done [ 146.331587][ T6911] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 146.336200][ T6911] syz.3.561 (6911): drop_caches: 2 [ 146.340207][ T6913] loop4: detected capacity change from 0 to 32768 [ 146.349295][ T6909] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 146.351372][ T6909] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 146.359825][ T6909] syz.2.562 (6909): drop_caches: 2 [ 146.432687][ T6913] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 146.434129][ T6913] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 146.437974][ T6913] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 146.440230][ T4159] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 146.441191][ T4159] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 146.478464][ T4159] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 37ms [ 146.490538][ T4159] gfs2: fsid=syz:syz.0: jid=0: Done [ 146.491586][ T6913] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 146.496598][ T6913] syz.4.563 (6913): drop_caches: 2 [ 146.511735][ T6917] loop1: detected capacity change from 0 to 32768 [ 146.591133][ T6917] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 146.592402][ T6917] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 146.595168][ T6917] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 146.604445][ T4857] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 146.605414][ T4857] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 146.638628][ T6915] loop0: detected capacity change from 0 to 32768 [ 146.645037][ T4857] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 39ms [ 146.646488][ T4857] gfs2: fsid=syz:syz.0: jid=0: Done [ 146.647323][ T6917] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 146.655954][ T6917] syz.1.564 (6917): drop_caches: 2 [ 146.670081][ T6915] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 146.671258][ T6915] CPU: 0 PID: 6915 Comm: syz.0.565 Not tainted syzkaller #0 [ 146.672367][ T6915] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 146.673708][ T6915] Call trace: [ 146.674159][ T6915] dump_backtrace+0x0/0x43c [ 146.674812][ T6915] show_stack+0x2c/0x3c [ 146.675403][ T6915] __dump_stack+0x30/0x40 [ 146.676047][ T6915] dump_stack_lvl+0xf8/0x160 [ 146.676695][ T6915] dump_stack+0x1c/0x5c [ 146.677293][ T6915] sysfs_create_dir_ns+0x22c/0x24c [ 146.678025][ T6915] kobject_add_internal+0x590/0xc54 [ 146.678808][ T6915] kobject_init_and_add+0x118/0x17c [ 146.679567][ T6915] gfs2_sys_fs_add+0x1dc/0x3d8 [ 146.680263][ T6915] gfs2_fill_super+0xdac/0x19e0 [ 146.680954][ T6915] get_tree_bdev+0x358/0x544 [ 146.681636][ T6915] gfs2_get_tree+0x54/0x1b4 [ 146.682251][ T6915] vfs_get_tree+0x90/0x274 [ 146.682903][ T6915] do_new_mount+0x228/0x810 [ 146.683535][ T6915] path_mount+0x5b4/0x1000 [ 146.684174][ T6915] __arm64_sys_mount+0x514/0x5e4 [ 146.684892][ T6915] invoke_syscall+0x98/0x2b8 [ 146.685548][ T6915] el0_svc_common+0x138/0x258 [ 146.686210][ T6915] do_el0_svc+0x58/0x14c [ 146.686829][ T6915] el0_svc+0x78/0x1e0 [ 146.687403][ T6915] el0t_64_sync_handler+0xcc/0xe4 [ 146.688148][ T6915] el0t_64_sync+0x1a0/0x1a4 [ 146.749328][ T6915] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 146.751278][ T6915] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 146.761771][ T6915] syz.0.565 (6915): drop_caches: 2 [ 146.781253][ T6921] loop3: detected capacity change from 0 to 32768 [ 146.867982][ T6919] loop2: detected capacity change from 0 to 32768 [ 146.883506][ T6921] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 146.884846][ T6921] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 146.887634][ T6921] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 146.895093][ T4857] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 146.896143][ T4857] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 146.926664][ T4857] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 30ms [ 146.927975][ T4857] gfs2: fsid=syz:syz.0: jid=0: Done [ 146.928870][ T6921] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 146.933912][ T6919] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 146.935038][ T6919] CPU: 0 PID: 6919 Comm: syz.2.567 Not tainted syzkaller #0 [ 146.936129][ T6919] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 146.937713][ T6919] Call trace: [ 146.938230][ T6919] dump_backtrace+0x0/0x43c [ 146.938923][ T6919] show_stack+0x2c/0x3c [ 146.939505][ T6919] __dump_stack+0x30/0x40 [ 146.940176][ T6919] dump_stack_lvl+0xf8/0x160 [ 146.940851][ T6919] dump_stack+0x1c/0x5c [ 146.941476][ T6919] sysfs_create_dir_ns+0x22c/0x24c [ 146.942226][ T6919] kobject_add_internal+0x590/0xc54 [ 146.942959][ T6919] kobject_init_and_add+0x118/0x17c [ 146.943701][ T6919] gfs2_sys_fs_add+0x1dc/0x3d8 [ 146.944487][ T6919] gfs2_fill_super+0xdac/0x19e0 [ 146.945201][ T6919] get_tree_bdev+0x358/0x544 [ 146.945915][ T6919] gfs2_get_tree+0x54/0x1b4 [ 146.946573][ T6919] vfs_get_tree+0x90/0x274 [ 146.947214][ T6919] do_new_mount+0x228/0x810 [ 146.947830][ T6919] path_mount+0x5b4/0x1000 [ 146.948425][ T6919] __arm64_sys_mount+0x514/0x5e4 [ 146.949095][ T6919] invoke_syscall+0x98/0x2b8 [ 146.949693][ T6919] el0_svc_common+0x138/0x258 [ 146.950339][ T6919] do_el0_svc+0x58/0x14c [ 146.950921][ T6919] el0_svc+0x78/0x1e0 [ 146.951463][ T6919] el0t_64_sync_handler+0xcc/0xe4 [ 146.952206][ T6919] el0t_64_sync+0x1a0/0x1a4 [ 146.961371][ T6921] syz.3.566 (6921): drop_caches: 2 [ 146.999237][ T6919] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 147.001061][ T6919] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 147.002833][ T6919] syz.2.567 (6919): drop_caches: 2 [ 147.035327][ T6923] loop4: detected capacity change from 0 to 32768 [ 147.089058][ T6925] loop1: detected capacity change from 0 to 32768 [ 147.097758][ T6923] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 147.099120][ T6923] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 147.107109][ T6923] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 147.109065][ T4857] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 147.110170][ T4857] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 147.153567][ T4857] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 43ms [ 147.154819][ T4857] gfs2: fsid=syz:syz.0: jid=0: Done [ 147.155603][ T6923] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 147.164391][ T6923] syz.4.568 (6923): drop_caches: 2 [ 147.171132][ T6925] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 147.172282][ T6925] CPU: 1 PID: 6925 Comm: syz.1.569 Not tainted syzkaller #0 [ 147.173516][ T6925] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 147.175094][ T6925] Call trace: [ 147.175604][ T6925] dump_backtrace+0x0/0x43c [ 147.176273][ T6925] show_stack+0x2c/0x3c [ 147.176878][ T6925] __dump_stack+0x30/0x40 [ 147.177498][ T6925] dump_stack_lvl+0xf8/0x160 [ 147.178179][ T6925] dump_stack+0x1c/0x5c [ 147.178798][ T6925] sysfs_create_dir_ns+0x22c/0x24c [ 147.179542][ T6925] kobject_add_internal+0x590/0xc54 [ 147.180298][ T6925] kobject_init_and_add+0x118/0x17c [ 147.181040][ T6925] gfs2_sys_fs_add+0x1dc/0x3d8 [ 147.181806][ T6925] gfs2_fill_super+0xdac/0x19e0 [ 147.182515][ T6925] get_tree_bdev+0x358/0x544 [ 147.183183][ T6925] gfs2_get_tree+0x54/0x1b4 [ 147.183819][ T6925] vfs_get_tree+0x90/0x274 [ 147.184443][ T6925] do_new_mount+0x228/0x810 [ 147.185136][ T6925] path_mount+0x5b4/0x1000 [ 147.185743][ T6925] __arm64_sys_mount+0x514/0x5e4 [ 147.186406][ T6925] invoke_syscall+0x98/0x2b8 [ 147.187090][ T6925] el0_svc_common+0x138/0x258 [ 147.187773][ T6925] do_el0_svc+0x58/0x14c [ 147.188587][ T6925] el0_svc+0x78/0x1e0 [ 147.189145][ T6925] el0t_64_sync_handler+0xcc/0xe4 [ 147.189846][ T6925] el0t_64_sync+0x1a0/0x1a4 [ 147.196096][ T6927] loop0: detected capacity change from 0 to 32768 [ 147.247249][ T6925] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 147.251084][ T6925] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 147.262954][ T6929] syz.3.571 (6929): drop_caches: 2 [ 147.284212][ T6927] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 147.285447][ T6927] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 147.288186][ T6927] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 147.298086][ T4857] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 147.299142][ T4857] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 147.338003][ T4857] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 38ms [ 147.339381][ T4857] gfs2: fsid=syz:syz.0: jid=0: Done [ 147.340213][ T6927] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 147.345130][ T6927] syz.0.570 (6927): drop_caches: 2 [ 147.422536][ T6925] syz.1.569 (6925): drop_caches: 2 [ 147.490109][ T6931] loop2: detected capacity change from 0 to 32768 [ 147.534856][ T6931] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 147.536094][ T6931] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 147.538773][ T6931] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 147.560580][ T4219] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 147.561610][ T4219] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 147.597801][ T6935] loop3: detected capacity change from 0 to 32768 [ 147.599427][ T4219] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 37ms [ 147.600643][ T4219] gfs2: fsid=syz:syz.0: jid=0: Done [ 147.601428][ T6931] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 147.606690][ T6931] syz.2.572 (6931): drop_caches: 2 [ 147.684106][ T6933] loop4: detected capacity change from 0 to 32768 [ 147.691763][ T6935] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 147.692921][ T6935] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 147.695752][ T6935] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 147.697452][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 147.698479][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 147.739523][ T6933] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 147.740794][ T6933] CPU: 1 PID: 6933 Comm: syz.4.573 Not tainted syzkaller #0 [ 147.741939][ T6933] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 147.743463][ T6933] Call trace: [ 147.743904][ T6933] dump_backtrace+0x0/0x43c [ 147.744536][ T6933] show_stack+0x2c/0x3c [ 147.745118][ T6933] __dump_stack+0x30/0x40 [ 147.745797][ T6933] dump_stack_lvl+0xf8/0x160 [ 147.746374][ T6933] dump_stack+0x1c/0x5c [ 147.746985][ T6933] sysfs_create_dir_ns+0x22c/0x24c [ 147.747759][ T6933] kobject_add_internal+0x590/0xc54 [ 147.748532][ T6933] kobject_init_and_add+0x118/0x17c [ 147.749295][ T6933] gfs2_sys_fs_add+0x1dc/0x3d8 [ 147.749985][ T6933] gfs2_fill_super+0xdac/0x19e0 [ 147.750684][ T6933] get_tree_bdev+0x358/0x544 [ 147.751358][ T6933] gfs2_get_tree+0x54/0x1b4 [ 147.752014][ T6933] vfs_get_tree+0x90/0x274 [ 147.752609][ T6933] do_new_mount+0x228/0x810 [ 147.753210][ T6933] path_mount+0x5b4/0x1000 [ 147.753882][ T6933] __arm64_sys_mount+0x514/0x5e4 [ 147.754542][ T6933] invoke_syscall+0x98/0x2b8 [ 147.755195][ T6933] el0_svc_common+0x138/0x258 [ 147.755946][ T6933] do_el0_svc+0x58/0x14c [ 147.756560][ T6933] el0_svc+0x78/0x1e0 [ 147.757151][ T6933] el0t_64_sync_handler+0xcc/0xe4 [ 147.757905][ T6933] el0t_64_sync+0x1a0/0x1a4 [ 147.775310][ T6937] loop0: detected capacity change from 0 to 32768 [ 147.776888][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 78ms [ 147.778099][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 147.779047][ T6935] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 147.785247][ T6933] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 147.787251][ T6933] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 147.788403][ T6935] syz.3.574 (6935): drop_caches: 2 [ 147.803358][ T6933] syz.4.573 (6933): drop_caches: 2 [ 147.811689][ T6937] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 147.812883][ T6937] CPU: 0 PID: 6937 Comm: syz.0.575 Not tainted syzkaller #0 [ 147.814093][ T6937] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 147.815593][ T6937] Call trace: [ 147.816079][ T6937] dump_backtrace+0x0/0x43c [ 147.816745][ T6937] show_stack+0x2c/0x3c [ 147.817384][ T6937] __dump_stack+0x30/0x40 [ 147.818013][ T6937] dump_stack_lvl+0xf8/0x160 [ 147.818732][ T6937] dump_stack+0x1c/0x5c [ 147.819312][ T6937] sysfs_create_dir_ns+0x22c/0x24c [ 147.819996][ T6937] kobject_add_internal+0x590/0xc54 [ 147.820725][ T6937] kobject_init_and_add+0x118/0x17c [ 147.821491][ T6937] gfs2_sys_fs_add+0x1dc/0x3d8 [ 147.822208][ T6937] gfs2_fill_super+0xdac/0x19e0 [ 147.822904][ T6937] get_tree_bdev+0x358/0x544 [ 147.823499][ T6937] gfs2_get_tree+0x54/0x1b4 [ 147.824165][ T6937] vfs_get_tree+0x90/0x274 [ 147.824809][ T6937] do_new_mount+0x228/0x810 [ 147.825461][ T6937] path_mount+0x5b4/0x1000 [ 147.826065][ T6937] __arm64_sys_mount+0x514/0x5e4 [ 147.826788][ T6937] invoke_syscall+0x98/0x2b8 [ 147.827420][ T6937] el0_svc_common+0x138/0x258 [ 147.828121][ T6937] do_el0_svc+0x58/0x14c [ 147.828707][ T6937] el0_svc+0x78/0x1e0 [ 147.829289][ T6937] el0t_64_sync_handler+0xcc/0xe4 [ 147.830016][ T6937] el0t_64_sync+0x1a0/0x1a4 1970/01/01 00:02:27 executed programs: 572 [ 147.865730][ T6939] loop1: detected capacity change from 0 to 32768 [ 147.919216][ T6937] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 147.921336][ T6937] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 147.935313][ T6939] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 147.936563][ T6939] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 147.944362][ T6939] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 147.946059][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 147.947127][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 147.981946][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 34ms [ 147.983148][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 147.983866][ T6939] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 147.989651][ T6939] syz.1.576 (6939): drop_caches: 2 [ 148.054533][ T6941] loop2: detected capacity change from 0 to 32768 [ 148.067848][ T6937] syz.0.575 (6937): drop_caches: 2 [ 148.114978][ T6941] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 148.116249][ T6941] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 148.118891][ T6941] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 148.138492][ T4219] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 148.139670][ T4219] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 148.185266][ T4219] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 45ms [ 148.186466][ T4219] gfs2: fsid=syz:syz.0: jid=0: Done [ 148.187262][ T6941] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 148.194878][ T6941] syz.2.577 (6941): drop_caches: 2 [ 148.214684][ T6945] loop4: detected capacity change from 0 to 32768 [ 148.254893][ T6945] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 148.256122][ T6945] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 148.258829][ T6945] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 148.259123][ T6943] loop3: detected capacity change from 0 to 32768 [ 148.264055][ T4219] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 148.265113][ T4219] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 148.297644][ T4219] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 32ms [ 148.298859][ T4219] gfs2: fsid=syz:syz.0: jid=0: Done [ 148.307638][ T6945] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 148.320441][ T6945] syz.4.579 (6945): drop_caches: 2 [ 148.354475][ T6947] loop1: detected capacity change from 0 to 32768 [ 148.375448][ T6943] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 148.376719][ T6943] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 148.381201][ T6943] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 148.383049][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 148.384136][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 148.406059][ T6947] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 148.407119][ T6947] CPU: 0 PID: 6947 Comm: syz.1.580 Not tainted syzkaller #0 [ 148.408175][ T6947] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 148.409603][ T6947] Call trace: [ 148.410068][ T6947] dump_backtrace+0x0/0x43c [ 148.410694][ T6947] show_stack+0x2c/0x3c [ 148.411317][ T6947] __dump_stack+0x30/0x40 [ 148.411929][ T6947] dump_stack_lvl+0xf8/0x160 [ 148.412661][ T6947] dump_stack+0x1c/0x5c [ 148.413276][ T6947] sysfs_create_dir_ns+0x22c/0x24c [ 148.414009][ T6947] kobject_add_internal+0x590/0xc54 [ 148.414738][ T6947] kobject_init_and_add+0x118/0x17c [ 148.415439][ T6947] gfs2_sys_fs_add+0x1dc/0x3d8 [ 148.416124][ T6947] gfs2_fill_super+0xdac/0x19e0 [ 148.416825][ T6947] get_tree_bdev+0x358/0x544 [ 148.417456][ T6947] gfs2_get_tree+0x54/0x1b4 [ 148.418048][ T6947] vfs_get_tree+0x90/0x274 [ 148.418625][ T6947] do_new_mount+0x228/0x810 [ 148.419247][ T6947] path_mount+0x5b4/0x1000 [ 148.419882][ T6947] __arm64_sys_mount+0x514/0x5e4 [ 148.420589][ T6947] invoke_syscall+0x98/0x2b8 [ 148.421263][ T6947] el0_svc_common+0x138/0x258 [ 148.422053][ T6947] do_el0_svc+0x58/0x14c [ 148.422681][ T6947] el0_svc+0x78/0x1e0 [ 148.422833][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 38ms [ 148.423281][ T6947] el0t_64_sync_handler+0xcc/0xe4 [ 148.424520][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 148.425214][ T6947] el0t_64_sync+0x1a0/0x1a4 [ 148.439225][ T6943] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 148.443688][ T6943] syz.3.578 (6943): drop_caches: 2 [ 148.499890][ T6949] loop0: detected capacity change from 0 to 32768 [ 148.505076][ T6947] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 148.507033][ T6947] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 148.553447][ T6947] syz.1.580 (6947): drop_caches: 2 [ 148.603617][ T6949] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 148.604802][ T6949] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 148.607396][ T6949] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 148.612421][ T4856] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 148.613420][ T4856] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 148.653385][ T4856] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 39ms [ 148.654696][ T4856] gfs2: fsid=syz:syz.0: jid=0: Done [ 148.655548][ T6949] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 148.664521][ T6949] syz.0.581 (6949): drop_caches: 2 [ 148.751980][ T6951] loop2: detected capacity change from 0 to 32768 [ 148.798231][ T6953] loop4: detected capacity change from 0 to 32768 [ 148.812836][ T6951] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 148.814068][ T6951] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 148.817110][ T6951] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 148.819071][ T4159] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 148.820204][ T4159] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 148.859338][ T4159] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 39ms [ 148.860564][ T4159] gfs2: fsid=syz:syz.0: jid=0: Done [ 148.861336][ T6951] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 148.866020][ T6951] syz.2.582 (6951): drop_caches: 2 [ 148.915253][ T6953] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 148.916530][ T6953] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 148.925324][ T6953] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 148.933333][ T4219] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 148.934357][ T4219] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 148.969879][ T6955] loop3: detected capacity change from 0 to 32768 [ 148.979616][ T4219] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 45ms [ 148.980874][ T4219] gfs2: fsid=syz:syz.0: jid=0: Done [ 148.981714][ T6953] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 148.987093][ T6953] syz.4.583 (6953): drop_caches: 2 [ 149.018777][ T6959] loop0: detected capacity change from 0 to 32768 [ 149.053069][ T6957] loop1: detected capacity change from 0 to 32768 [ 149.063371][ T6955] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 149.064638][ T6955] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 149.065584][ T6957] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 149.066874][ T6957] CPU: 1 PID: 6957 Comm: syz.1.585 Not tainted syzkaller #0 [ 149.068020][ T6957] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 149.069588][ T6957] Call trace: [ 149.070051][ T6957] dump_backtrace+0x0/0x43c [ 149.070714][ T6957] show_stack+0x2c/0x3c [ 149.071336][ T6957] __dump_stack+0x30/0x40 [ 149.072004][ T6957] dump_stack_lvl+0xf8/0x160 [ 149.072760][ T6957] dump_stack+0x1c/0x5c [ 149.073387][ T6957] sysfs_create_dir_ns+0x22c/0x24c [ 149.074144][ T6957] kobject_add_internal+0x590/0xc54 [ 149.074958][ T6957] kobject_init_and_add+0x118/0x17c [ 149.075779][ T6957] gfs2_sys_fs_add+0x1dc/0x3d8 [ 149.076546][ T6957] gfs2_fill_super+0xdac/0x19e0 [ 149.077345][ T6957] get_tree_bdev+0x358/0x544 [ 149.078052][ T6957] gfs2_get_tree+0x54/0x1b4 [ 149.078734][ T6957] vfs_get_tree+0x90/0x274 [ 149.079388][ T6957] do_new_mount+0x228/0x810 [ 149.080063][ T6957] path_mount+0x5b4/0x1000 [ 149.080781][ T6957] __arm64_sys_mount+0x514/0x5e4 [ 149.081525][ T6957] invoke_syscall+0x98/0x2b8 [ 149.082247][ T6957] el0_svc_common+0x138/0x258 [ 149.082985][ T6957] do_el0_svc+0x58/0x14c [ 149.083626][ T6957] el0_svc+0x78/0x1e0 [ 149.084226][ T6957] el0t_64_sync_handler+0xcc/0xe4 [ 149.085000][ T6957] el0t_64_sync+0x1a0/0x1a4 [ 149.091628][ T6959] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 149.092748][ T6959] CPU: 1 PID: 6959 Comm: syz.0.586 Not tainted syzkaller #0 [ 149.093941][ T6959] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 149.095466][ T6959] Call trace: [ 149.095978][ T6959] dump_backtrace+0x0/0x43c [ 149.096615][ T6959] show_stack+0x2c/0x3c [ 149.097220][ T6959] __dump_stack+0x30/0x40 [ 149.097866][ T6959] dump_stack_lvl+0xf8/0x160 [ 149.098560][ T6959] dump_stack+0x1c/0x5c [ 149.099203][ T6959] sysfs_create_dir_ns+0x22c/0x24c [ 149.100004][ T6959] kobject_add_internal+0x590/0xc54 [ 149.100792][ T6959] kobject_init_and_add+0x118/0x17c [ 149.101566][ T6959] gfs2_sys_fs_add+0x1dc/0x3d8 [ 149.102268][ T6959] gfs2_fill_super+0xdac/0x19e0 [ 149.103008][ T6959] get_tree_bdev+0x358/0x544 [ 149.103709][ T6959] gfs2_get_tree+0x54/0x1b4 [ 149.104426][ T6959] vfs_get_tree+0x90/0x274 [ 149.105072][ T6959] do_new_mount+0x228/0x810 [ 149.105720][ T6959] path_mount+0x5b4/0x1000 [ 149.106383][ T6959] __arm64_sys_mount+0x514/0x5e4 [ 149.107129][ T6959] invoke_syscall+0x98/0x2b8 [ 149.107845][ T6959] el0_svc_common+0x138/0x258 [ 149.108557][ T6959] do_el0_svc+0x58/0x14c [ 149.109209][ T6959] el0_svc+0x78/0x1e0 [ 149.109802][ T6959] el0t_64_sync_handler+0xcc/0xe4 [ 149.110509][ T6959] el0t_64_sync+0x1a0/0x1a4 [ 149.116943][ T6959] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 149.118942][ T6959] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 149.120458][ T6957] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 149.122850][ T6957] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 149.124088][ T6955] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 149.125897][ T4857] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 149.126953][ T4857] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 149.169369][ T4857] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 42ms [ 149.170656][ T4857] gfs2: fsid=syz:syz.0: jid=0: Done [ 149.171509][ T6955] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 149.176159][ T6955] syz.3.584 (6955): drop_caches: 2 [ 149.225608][ T6961] loop2: detected capacity change from 0 to 32768 [ 149.261570][ T6957] syz.1.585 (6957): drop_caches: 2 [ 149.267175][ T6959] syz.0.586 (6959): drop_caches: 2 [ 149.272285][ T6961] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 149.273486][ T6961] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 149.276105][ T6961] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 149.303079][ T4219] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 149.304051][ T4219] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 149.349369][ T4219] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 45ms [ 149.350631][ T4219] gfs2: fsid=syz:syz.0: jid=0: Done [ 149.351396][ T6961] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 149.355203][ T6961] syz.2.587 (6961): drop_caches: 2 [ 149.639303][ T6963] loop4: detected capacity change from 0 to 32768 [ 149.663860][ T6967] loop0: detected capacity change from 0 to 32768 [ 149.691389][ T6967] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 149.692654][ T6967] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 149.695410][ T6967] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 149.703239][ T4151] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 149.704279][ T4151] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 149.711079][ T6969] loop1: detected capacity change from 0 to 32768 [ 149.714701][ T6965] loop3: detected capacity change from 0 to 32768 [ 149.730473][ T6963] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 149.731634][ T6963] CPU: 1 PID: 6963 Comm: syz.4.588 Not tainted syzkaller #0 [ 149.732716][ T6963] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 149.734247][ T6963] Call trace: [ 149.734748][ T6963] dump_backtrace+0x0/0x43c [ 149.735449][ T6963] show_stack+0x2c/0x3c [ 149.736097][ T6963] __dump_stack+0x30/0x40 [ 149.736760][ T6963] dump_stack_lvl+0xf8/0x160 [ 149.737547][ T6963] dump_stack+0x1c/0x5c [ 149.738208][ T6963] sysfs_create_dir_ns+0x22c/0x24c [ 149.738991][ T6963] kobject_add_internal+0x590/0xc54 [ 149.739809][ T6963] kobject_init_and_add+0x118/0x17c [ 149.740575][ T6963] gfs2_sys_fs_add+0x1dc/0x3d8 [ 149.741267][ T6963] gfs2_fill_super+0xdac/0x19e0 [ 149.741983][ T6963] get_tree_bdev+0x358/0x544 [ 149.742699][ T6963] gfs2_get_tree+0x54/0x1b4 [ 149.743386][ T6963] vfs_get_tree+0x90/0x274 [ 149.744077][ T6963] do_new_mount+0x228/0x810 [ 149.744740][ T6963] path_mount+0x5b4/0x1000 [ 149.745391][ T6963] __arm64_sys_mount+0x514/0x5e4 [ 149.746161][ T6963] invoke_syscall+0x98/0x2b8 [ 149.746821][ T6963] el0_svc_common+0x138/0x258 [ 149.747506][ T6963] do_el0_svc+0x58/0x14c [ 149.748118][ T6963] el0_svc+0x78/0x1e0 [ 149.748733][ T6963] el0t_64_sync_handler+0xcc/0xe4 [ 149.749526][ T6963] el0t_64_sync+0x1a0/0x1a4 [ 149.749890][ T6971] loop2: detected capacity change from 0 to 32768 [ 149.758038][ T4151] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 53ms [ 149.759472][ T4151] gfs2: fsid=syz:syz.0: jid=0: Done [ 149.760369][ T6967] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 149.762918][ T6963] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 149.763291][ T6965] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 149.766016][ T6965] CPU: 0 PID: 6965 Comm: syz.3.589 Not tainted syzkaller #0 [ 149.767106][ T6965] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 149.768567][ T6965] Call trace: [ 149.768787][ T6967] syz.0.590 (6967): drop_caches: 2 [ 149.769036][ T6965] dump_backtrace+0x0/0x43c [ 149.770554][ T6965] show_stack+0x2c/0x3c [ 149.771161][ T6965] __dump_stack+0x30/0x40 [ 149.771803][ T6965] dump_stack_lvl+0xf8/0x160 [ 149.771861][ T6963] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 149.772512][ T6965] dump_stack+0x1c/0x5c [ 149.774083][ T6965] sysfs_create_dir_ns+0x22c/0x24c [ 149.774843][ T6965] kobject_add_internal+0x590/0xc54 [ 149.775589][ T6965] kobject_init_and_add+0x118/0x17c [ 149.776337][ T6965] gfs2_sys_fs_add+0x1dc/0x3d8 [ 149.776989][ T6965] gfs2_fill_super+0xdac/0x19e0 [ 149.777693][ T6965] get_tree_bdev+0x358/0x544 [ 149.778333][ T6965] gfs2_get_tree+0x54/0x1b4 [ 149.778971][ T6965] vfs_get_tree+0x90/0x274 [ 149.779585][ T6965] do_new_mount+0x228/0x810 [ 149.780257][ T6965] path_mount+0x5b4/0x1000 [ 149.780864][ T6965] __arm64_sys_mount+0x514/0x5e4 [ 149.781723][ T6965] invoke_syscall+0x98/0x2b8 [ 149.782485][ T6965] el0_svc_common+0x138/0x258 [ 149.783271][ T6965] do_el0_svc+0x58/0x14c [ 149.783947][ T6965] el0_svc+0x78/0x1e0 [ 149.784570][ T6965] el0t_64_sync_handler+0xcc/0xe4 [ 149.785314][ T6965] el0t_64_sync+0x1a0/0x1a4 [ 149.787093][ T6969] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 149.788257][ T6969] CPU: 0 PID: 6969 Comm: syz.1.591 Not tainted syzkaller #0 [ 149.789352][ T6969] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 149.790894][ T6969] Call trace: [ 149.791411][ T6969] dump_backtrace+0x0/0x43c [ 149.792137][ T6969] show_stack+0x2c/0x3c [ 149.792756][ T6969] __dump_stack+0x30/0x40 [ 149.793405][ T6969] dump_stack_lvl+0xf8/0x160 [ 149.794102][ T6969] dump_stack+0x1c/0x5c [ 149.794750][ T6969] sysfs_create_dir_ns+0x22c/0x24c [ 149.795508][ T6969] kobject_add_internal+0x590/0xc54 [ 149.796309][ T6969] kobject_init_and_add+0x118/0x17c [ 149.797093][ T6969] gfs2_sys_fs_add+0x1dc/0x3d8 [ 149.797762][ T6969] gfs2_fill_super+0xdac/0x19e0 [ 149.798470][ T6969] get_tree_bdev+0x358/0x544 [ 149.799117][ T6969] gfs2_get_tree+0x54/0x1b4 [ 149.799768][ T6969] vfs_get_tree+0x90/0x274 [ 149.800402][ T6969] do_new_mount+0x228/0x810 [ 149.801038][ T6969] path_mount+0x5b4/0x1000 [ 149.801634][ T6969] __arm64_sys_mount+0x514/0x5e4 [ 149.802335][ T6969] invoke_syscall+0x98/0x2b8 [ 149.802965][ T6969] el0_svc_common+0x138/0x258 [ 149.803628][ T6969] do_el0_svc+0x58/0x14c [ 149.804214][ T6969] el0_svc+0x78/0x1e0 [ 149.804787][ T6969] el0t_64_sync_handler+0xcc/0xe4 [ 149.805481][ T6969] el0t_64_sync+0x1a0/0x1a4 [ 149.807848][ T6963] syz.4.588 (6963): drop_caches: 2 [ 149.822436][ T6969] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 149.824499][ T6969] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 149.825877][ T6965] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 149.827925][ T6965] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 149.832306][ T6965] syz.3.589 (6965): drop_caches: 2 [ 149.838579][ T6969] syz.1.591 (6969): drop_caches: 2 [ 149.847403][ T6971] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 149.848509][ T6971] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 149.853954][ T6971] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 149.869700][ T4159] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 149.870698][ T4159] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 149.902226][ T4159] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 31ms [ 149.903452][ T4159] gfs2: fsid=syz:syz.0: jid=0: Done [ 149.904264][ T6971] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 149.908883][ T6971] syz.2.592 (6971): drop_caches: 2 [ 150.233420][ T6973] loop4: detected capacity change from 0 to 32768 [ 150.256533][ T6973] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 150.257822][ T6973] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 150.262466][ T6973] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 150.269548][ T4856] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 150.270602][ T4856] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 150.290856][ T6979] loop2: detected capacity change from 0 to 32768 [ 150.297975][ T6977] loop1: detected capacity change from 0 to 32768 [ 150.298016][ T4856] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 27ms [ 150.300705][ T4856] gfs2: fsid=syz:syz.0: jid=0: Done [ 150.301530][ T6973] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 150.306233][ T6973] syz.4.594 (6973): drop_caches: 2 [ 150.353461][ T6975] loop3: detected capacity change from 0 to 32768 [ 150.355273][ T6977] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 150.356515][ T6977] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 150.370680][ T6979] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 150.371778][ T6979] CPU: 0 PID: 6979 Comm: syz.2.597 Not tainted syzkaller #0 [ 150.372888][ T6979] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 150.374401][ T6979] Call trace: [ 150.374883][ T6979] dump_backtrace+0x0/0x43c [ 150.375514][ T6979] show_stack+0x2c/0x3c [ 150.376111][ T6979] __dump_stack+0x30/0x40 [ 150.376752][ T6979] dump_stack_lvl+0xf8/0x160 [ 150.377401][ T6979] dump_stack+0x1c/0x5c [ 150.377988][ T6979] sysfs_create_dir_ns+0x22c/0x24c [ 150.378708][ T6979] kobject_add_internal+0x590/0xc54 [ 150.379518][ T6979] kobject_init_and_add+0x118/0x17c [ 150.380294][ T6979] gfs2_sys_fs_add+0x1dc/0x3d8 [ 150.381028][ T6979] gfs2_fill_super+0xdac/0x19e0 [ 150.381776][ T6979] get_tree_bdev+0x358/0x544 [ 150.382431][ T6979] gfs2_get_tree+0x54/0x1b4 [ 150.383076][ T6979] vfs_get_tree+0x90/0x274 [ 150.383756][ T6979] do_new_mount+0x228/0x810 [ 150.384411][ T6979] path_mount+0x5b4/0x1000 [ 150.385033][ T6979] __arm64_sys_mount+0x514/0x5e4 [ 150.385739][ T6979] invoke_syscall+0x98/0x2b8 [ 150.386419][ T6979] el0_svc_common+0x138/0x258 [ 150.387108][ T6979] do_el0_svc+0x58/0x14c [ 150.387733][ T6979] el0_svc+0x78/0x1e0 [ 150.388304][ T6979] el0t_64_sync_handler+0xcc/0xe4 [ 150.389000][ T6979] el0t_64_sync+0x1a0/0x1a4 [ 150.394520][ T6977] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 150.400002][ T4856] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 150.400990][ T4856] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 150.433035][ T6979] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 150.435504][ T6979] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 150.440140][ T4856] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 39ms [ 150.441358][ T6975] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 150.442487][ T6975] CPU: 0 PID: 6975 Comm: syz.3.595 Not tainted syzkaller #0 [ 150.443494][ T6975] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 150.444974][ T6975] Call trace: [ 150.445413][ T6975] dump_backtrace+0x0/0x43c [ 150.446056][ T6975] show_stack+0x2c/0x3c [ 150.446699][ T6975] __dump_stack+0x30/0x40 [ 150.447339][ T6975] dump_stack_lvl+0xf8/0x160 [ 150.447984][ T6975] dump_stack+0x1c/0x5c [ 150.448572][ T6975] sysfs_create_dir_ns+0x22c/0x24c [ 150.449271][ T6975] kobject_add_internal+0x590/0xc54 [ 150.450020][ T6975] kobject_init_and_add+0x118/0x17c [ 150.450718][ T6975] gfs2_sys_fs_add+0x1dc/0x3d8 [ 150.451392][ T6975] gfs2_fill_super+0xdac/0x19e0 [ 150.452102][ T6975] get_tree_bdev+0x358/0x544 [ 150.452765][ T6975] gfs2_get_tree+0x54/0x1b4 [ 150.453441][ T6975] vfs_get_tree+0x90/0x274 [ 150.454062][ T6975] do_new_mount+0x228/0x810 [ 150.454701][ T6975] path_mount+0x5b4/0x1000 [ 150.455299][ T6975] __arm64_sys_mount+0x514/0x5e4 [ 150.456101][ T6975] invoke_syscall+0x98/0x2b8 [ 150.456776][ T6975] el0_svc_common+0x138/0x258 [ 150.457465][ T6975] do_el0_svc+0x58/0x14c [ 150.458135][ T6975] el0_svc+0x78/0x1e0 [ 150.458713][ T6975] el0t_64_sync_handler+0xcc/0xe4 [ 150.459476][ T6975] el0t_64_sync+0x1a0/0x1a4 [ 150.461707][ T4856] gfs2: fsid=syz:syz.0: jid=0: Done [ 150.462445][ T6977] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 150.467244][ T6977] syz.1.596 (6977): drop_caches: 2 [ 150.476829][ T6981] loop0: detected capacity change from 0 to 32768 [ 150.478040][ T6975] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 150.480260][ T6975] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 150.482148][ T6975] syz.3.595 (6975): drop_caches: 2 [ 150.548063][ T6979] syz.2.597 (6979): drop_caches: 2 [ 150.564163][ T6981] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 150.565575][ T6981] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 150.568380][ T6981] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 150.588922][ T4859] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 150.589984][ T4859] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 150.640541][ T4859] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 50ms [ 150.641760][ T4859] gfs2: fsid=syz:syz.0: jid=0: Done [ 150.642661][ T6981] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 150.647624][ T6981] syz.0.593 (6981): drop_caches: 2 [ 150.788109][ T6983] loop4: detected capacity change from 0 to 32768 [ 150.801141][ T6985] loop3: detected capacity change from 0 to 32768 [ 150.804310][ T6983] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 150.805589][ T6983] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 150.808889][ T6983] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 150.830288][ T4856] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 150.831415][ T4856] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 150.860635][ T6985] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 150.861784][ T6985] CPU: 1 PID: 6985 Comm: syz.3.599 Not tainted syzkaller #0 [ 150.862939][ T6985] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 150.864471][ T6985] Call trace: [ 150.864928][ T6985] dump_backtrace+0x0/0x43c [ 150.865592][ T6985] show_stack+0x2c/0x3c [ 150.866288][ T6985] __dump_stack+0x30/0x40 [ 150.866923][ T6985] dump_stack_lvl+0xf8/0x160 [ 150.867610][ T6985] dump_stack+0x1c/0x5c [ 150.868294][ T6985] sysfs_create_dir_ns+0x22c/0x24c [ 150.869065][ T6985] kobject_add_internal+0x590/0xc54 [ 150.869866][ T6985] kobject_init_and_add+0x118/0x17c [ 150.870407][ T4856] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 38ms [ 150.870644][ T6985] gfs2_sys_fs_add+0x1dc/0x3d8 [ 150.872453][ T4856] gfs2: fsid=syz:syz.0: jid=0: Done [ 150.872452][ T6985] gfs2_fill_super+0xdac/0x19e0 [ 150.873997][ T6985] get_tree_bdev+0x358/0x544 [ 150.874683][ T6985] gfs2_get_tree+0x54/0x1b4 [ 150.875369][ T6985] vfs_get_tree+0x90/0x274 [ 150.876092][ T6985] do_new_mount+0x228/0x810 [ 150.876759][ T6985] path_mount+0x5b4/0x1000 [ 150.877397][ T6985] __arm64_sys_mount+0x514/0x5e4 [ 150.878113][ T6985] invoke_syscall+0x98/0x2b8 [ 150.878724][ T6985] el0_svc_common+0x138/0x258 [ 150.879396][ T6985] do_el0_svc+0x58/0x14c [ 150.880002][ T6985] el0_svc+0x78/0x1e0 [ 150.880629][ T6985] el0t_64_sync_handler+0xcc/0xe4 [ 150.881407][ T6985] el0t_64_sync+0x1a0/0x1a4 [ 150.882119][ T6983] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 150.887802][ T6983] syz.4.598 (6983): drop_caches: 2 [ 150.909368][ T6985] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 150.911405][ T6985] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 151.024783][ T6985] syz.3.599 (6985): drop_caches: 2 [ 151.071033][ T6991] loop1: detected capacity change from 0 to 32768 [ 151.108046][ T6990] loop0: detected capacity change from 0 to 32768 [ 151.114158][ T6987] loop2: detected capacity change from 0 to 32768 [ 151.122711][ T6991] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 151.124073][ T6991] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 151.127430][ T6991] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 151.136743][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 151.137767][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 151.161257][ T6987] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 151.162350][ T6987] CPU: 0 PID: 6987 Comm: syz.2.601 Not tainted syzkaller #0 [ 151.163420][ T6987] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 151.164837][ T6987] Call trace: [ 151.165292][ T6987] dump_backtrace+0x0/0x43c [ 151.165972][ T6987] show_stack+0x2c/0x3c [ 151.166606][ T6987] __dump_stack+0x30/0x40 [ 151.167254][ T6987] dump_stack_lvl+0xf8/0x160 [ 151.167975][ T6987] dump_stack+0x1c/0x5c [ 151.168583][ T6987] sysfs_create_dir_ns+0x22c/0x24c [ 151.169354][ T6987] kobject_add_internal+0x590/0xc54 [ 151.170135][ T6987] kobject_init_and_add+0x118/0x17c [ 151.170934][ T6987] gfs2_sys_fs_add+0x1dc/0x3d8 [ 151.171649][ T6987] gfs2_fill_super+0xdac/0x19e0 [ 151.172420][ T6987] get_tree_bdev+0x358/0x544 [ 151.173086][ T6987] gfs2_get_tree+0x54/0x1b4 [ 151.173783][ T6987] vfs_get_tree+0x90/0x274 [ 151.174425][ T6987] do_new_mount+0x228/0x810 [ 151.175088][ T6987] path_mount+0x5b4/0x1000 [ 151.175737][ T6987] __arm64_sys_mount+0x514/0x5e4 [ 151.176447][ T6987] invoke_syscall+0x98/0x2b8 [ 151.177182][ T6987] el0_svc_common+0x138/0x258 [ 151.177911][ T6987] do_el0_svc+0x58/0x14c [ 151.178064][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 40ms [ 151.178528][ T6987] el0_svc+0x78/0x1e0 [ 151.179770][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 151.180186][ T6987] el0t_64_sync_handler+0xcc/0xe4 [ 151.180995][ T6991] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 151.181672][ T6987] el0t_64_sync+0x1a0/0x1a4 [ 151.184225][ T6990] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 151.185310][ T6990] CPU: 0 PID: 6990 Comm: syz.0.602 Not tainted syzkaller #0 [ 151.186367][ T6990] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 151.187727][ T6990] Call trace: [ 151.188163][ T6990] dump_backtrace+0x0/0x43c [ 151.188589][ T6991] syz.1.600 (6991): drop_caches: 2 [ 151.188763][ T6990] show_stack+0x2c/0x3c [ 151.190114][ T6990] __dump_stack+0x30/0x40 [ 151.190716][ T6990] dump_stack_lvl+0xf8/0x160 [ 151.191361][ T6990] dump_stack+0x1c/0x5c [ 151.191944][ T6990] sysfs_create_dir_ns+0x22c/0x24c [ 151.192686][ T6990] kobject_add_internal+0x590/0xc54 [ 151.193434][ T6990] kobject_init_and_add+0x118/0x17c [ 151.194210][ T6990] gfs2_sys_fs_add+0x1dc/0x3d8 [ 151.194887][ T6990] gfs2_fill_super+0xdac/0x19e0 [ 151.195543][ T6990] get_tree_bdev+0x358/0x544 [ 151.196189][ T6990] gfs2_get_tree+0x54/0x1b4 [ 151.196817][ T6990] vfs_get_tree+0x90/0x274 [ 151.197462][ T6990] do_new_mount+0x228/0x810 [ 151.198057][ T6990] path_mount+0x5b4/0x1000 [ 151.198653][ T6990] __arm64_sys_mount+0x514/0x5e4 [ 151.199312][ T6990] invoke_syscall+0x98/0x2b8 [ 151.199944][ T6990] el0_svc_common+0x138/0x258 [ 151.200613][ T6990] do_el0_svc+0x58/0x14c [ 151.201175][ T6990] el0_svc+0x78/0x1e0 [ 151.201698][ T6990] el0t_64_sync_handler+0xcc/0xe4 [ 151.202409][ T6990] el0t_64_sync+0x1a0/0x1a4 [ 151.216747][ T6990] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 151.218942][ T6990] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 151.220265][ T6987] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 151.222297][ T6987] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 151.237202][ T6990] syz.0.602 (6990): drop_caches: 2 [ 151.314698][ T6987] syz.2.601 (6987): drop_caches: 2 [ 151.326228][ T6993] loop4: detected capacity change from 0 to 32768 [ 151.403016][ T6993] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 151.404203][ T6993] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 151.406754][ T6993] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 151.408521][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 151.409618][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 151.453330][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 43ms [ 151.454544][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 151.455388][ T6993] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 151.461162][ T6993] syz.4.603 (6993): drop_caches: 2 [ 151.511629][ T6995] loop3: detected capacity change from 0 to 32768 [ 151.556321][ T6999] loop0: detected capacity change from 0 to 32768 [ 151.563170][ T6997] loop1: detected capacity change from 0 to 32768 [ 151.572789][ T6995] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 151.574089][ T6995] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 151.576839][ T6995] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 151.578608][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 151.579700][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 151.590798][ T6999] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 151.591993][ T6999] CPU: 1 PID: 6999 Comm: syz.0.606 Not tainted syzkaller #0 [ 151.593233][ T6999] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 151.593552][ T6997] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 151.594743][ T6999] Call trace: [ 151.596265][ T6999] dump_backtrace+0x0/0x43c [ 151.596961][ T6999] show_stack+0x2c/0x3c [ 151.597571][ T6999] __dump_stack+0x30/0x40 [ 151.598198][ T6999] dump_stack_lvl+0xf8/0x160 [ 151.598859][ T6999] dump_stack+0x1c/0x5c [ 151.599476][ T6999] sysfs_create_dir_ns+0x22c/0x24c [ 151.600223][ T6999] kobject_add_internal+0x590/0xc54 [ 151.600979][ T6999] kobject_init_and_add+0x118/0x17c [ 151.601703][ T6999] gfs2_sys_fs_add+0x1dc/0x3d8 [ 151.602408][ T6999] gfs2_fill_super+0xdac/0x19e0 [ 151.603094][ T6999] get_tree_bdev+0x358/0x544 [ 151.603767][ T6999] gfs2_get_tree+0x54/0x1b4 [ 151.604436][ T6999] vfs_get_tree+0x90/0x274 [ 151.605073][ T6999] do_new_mount+0x228/0x810 [ 151.605759][ T6999] path_mount+0x5b4/0x1000 [ 151.606428][ T6999] __arm64_sys_mount+0x514/0x5e4 [ 151.607143][ T6999] invoke_syscall+0x98/0x2b8 [ 151.607784][ T6999] el0_svc_common+0x138/0x258 [ 151.608512][ T6999] do_el0_svc+0x58/0x14c [ 151.609144][ T6999] el0_svc+0x78/0x1e0 [ 151.609726][ T6999] el0t_64_sync_handler+0xcc/0xe4 [ 151.610453][ T6999] el0t_64_sync+0x1a0/0x1a4 [ 151.632961][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 53ms [ 151.634148][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 151.634937][ T6995] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 151.636692][ T6997] CPU: 0 PID: 6997 Comm: syz.1.605 Not tainted syzkaller #0 [ 151.637750][ T6997] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 151.639152][ T6997] Call trace: [ 151.639604][ T6997] dump_backtrace+0x0/0x43c [ 151.639881][ T6995] syz.3.604 (6995): drop_caches: 2 [ 151.640310][ T6997] show_stack+0x2c/0x3c [ 151.641671][ T6997] __dump_stack+0x30/0x40 [ 151.642259][ T6997] dump_stack_lvl+0xf8/0x160 [ 151.642993][ T6997] dump_stack+0x1c/0x5c [ 151.643669][ T6997] sysfs_create_dir_ns+0x22c/0x24c [ 151.644490][ T6997] kobject_add_internal+0x590/0xc54 [ 151.645295][ T6997] kobject_init_and_add+0x118/0x17c [ 151.646097][ T6997] gfs2_sys_fs_add+0x1dc/0x3d8 [ 151.646815][ T6997] gfs2_fill_super+0xdac/0x19e0 [ 151.647577][ T6997] get_tree_bdev+0x358/0x544 [ 151.648060][ T6999] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 151.648283][ T6997] gfs2_get_tree+0x54/0x1b4 [ 151.650972][ T6997] vfs_get_tree+0x90/0x274 [ 151.651672][ T6997] do_new_mount+0x228/0x810 [ 151.652381][ T6997] path_mount+0x5b4/0x1000 [ 151.653080][ T6997] __arm64_sys_mount+0x514/0x5e4 [ 151.653173][ T6999] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 151.653807][ T6997] invoke_syscall+0x98/0x2b8 [ 151.655509][ T6997] el0_svc_common+0x138/0x258 [ 151.656227][ T6997] do_el0_svc+0x58/0x14c [ 151.656780][ T6997] el0_svc+0x78/0x1e0 [ 151.657364][ T6997] el0t_64_sync_handler+0xcc/0xe4 [ 151.658232][ T6997] el0t_64_sync+0x1a0/0x1a4 [ 151.719306][ T6997] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 151.721237][ T6997] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 151.723227][ T6997] syz.1.605 (6997): drop_caches: 2 [ 151.856342][ T7001] loop2: detected capacity change from 0 to 32768 [ 151.860783][ T6999] syz.0.606 (6999): drop_caches: 2 [ 151.913006][ T7003] loop4: detected capacity change from 0 to 32768 [ 151.934022][ T7001] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 151.934316][ T7003] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 151.935349][ T7001] CPU: 1 PID: 7001 Comm: syz.2.607 Not tainted syzkaller #0 [ 151.936492][ T7003] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 151.937605][ T7001] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 151.940094][ T7001] Call trace: [ 151.940583][ T7001] dump_backtrace+0x0/0x43c [ 151.941269][ T7001] show_stack+0x2c/0x3c [ 151.941867][ T7001] __dump_stack+0x30/0x40 [ 151.942497][ T7001] dump_stack_lvl+0xf8/0x160 [ 151.943154][ T7001] dump_stack+0x1c/0x5c [ 151.943766][ T7001] sysfs_create_dir_ns+0x22c/0x24c [ 151.944553][ T7001] kobject_add_internal+0x590/0xc54 [ 151.945295][ T7001] kobject_init_and_add+0x118/0x17c [ 151.946058][ T7001] gfs2_sys_fs_add+0x1dc/0x3d8 [ 151.946694][ T7001] gfs2_fill_super+0xdac/0x19e0 [ 151.947371][ T7001] get_tree_bdev+0x358/0x544 [ 151.948002][ T7001] gfs2_get_tree+0x54/0x1b4 [ 151.948675][ T7001] vfs_get_tree+0x90/0x274 [ 151.949277][ T7001] do_new_mount+0x228/0x810 [ 151.949919][ T7001] path_mount+0x5b4/0x1000 [ 151.950576][ T7001] __arm64_sys_mount+0x514/0x5e4 [ 151.951279][ T7001] invoke_syscall+0x98/0x2b8 [ 151.951974][ T7001] el0_svc_common+0x138/0x258 [ 151.952670][ T7001] do_el0_svc+0x58/0x14c [ 151.953301][ T7001] el0_svc+0x78/0x1e0 [ 151.953915][ T7001] el0t_64_sync_handler+0xcc/0xe4 [ 151.954689][ T7001] el0t_64_sync+0x1a0/0x1a4 [ 151.960340][ T7003] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 151.969511][ T4857] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 151.970612][ T4857] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 152.000875][ T4857] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 30ms [ 152.006049][ T7001] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 152.008022][ T7001] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 152.012389][ T4857] gfs2: fsid=syz:syz.0: jid=0: Done [ 152.013173][ T7003] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 152.016275][ T7001] syz.2.607 (7001): drop_caches: 2 [ 152.019042][ T7003] syz.4.608 (7003): drop_caches: 2 [ 152.084723][ T7005] loop3: detected capacity change from 0 to 32768 [ 152.121160][ T7007] loop1: detected capacity change from 0 to 32768 [ 152.142799][ T7005] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 152.144125][ T7005] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 152.147501][ T7005] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 152.150573][ T7007] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 152.151679][ T7007] CPU: 0 PID: 7007 Comm: syz.1.610 Not tainted syzkaller #0 [ 152.152807][ T7007] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 152.154257][ T7007] Call trace: [ 152.154721][ T7007] dump_backtrace+0x0/0x43c [ 152.155355][ T7007] show_stack+0x2c/0x3c [ 152.155941][ T7007] __dump_stack+0x30/0x40 [ 152.156587][ T7007] dump_stack_lvl+0xf8/0x160 [ 152.157236][ T7007] dump_stack+0x1c/0x5c [ 152.157863][ T7007] sysfs_create_dir_ns+0x22c/0x24c [ 152.158561][ T7007] kobject_add_internal+0x590/0xc54 [ 152.159275][ T7007] kobject_init_and_add+0x118/0x17c [ 152.159963][ T7007] gfs2_sys_fs_add+0x1dc/0x3d8 [ 152.160632][ T7007] gfs2_fill_super+0xdac/0x19e0 [ 152.161325][ T7007] get_tree_bdev+0x358/0x544 [ 152.162058][ T7007] gfs2_get_tree+0x54/0x1b4 [ 152.162789][ T7007] vfs_get_tree+0x90/0x274 [ 152.163532][ T7007] do_new_mount+0x228/0x810 [ 152.164227][ T7007] path_mount+0x5b4/0x1000 [ 152.164868][ T7007] __arm64_sys_mount+0x514/0x5e4 [ 152.165686][ T7007] invoke_syscall+0x98/0x2b8 [ 152.166341][ T7007] el0_svc_common+0x138/0x258 [ 152.167049][ T7007] do_el0_svc+0x58/0x14c [ 152.167664][ T7007] el0_svc+0x78/0x1e0 [ 152.168251][ T7007] el0t_64_sync_handler+0xcc/0xe4 [ 152.168962][ T7007] el0t_64_sync+0x1a0/0x1a4 [ 152.184383][ T4857] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 152.185401][ T4857] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 152.228170][ T4857] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 42ms [ 152.230274][ T4857] gfs2: fsid=syz:syz.0: jid=0: Done [ 152.231078][ T7005] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 152.233791][ T7007] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 152.236310][ T7007] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 152.241347][ T7005] syz.3.609 (7005): drop_caches: 2 [ 152.243266][ T7007] syz.1.610 (7007): drop_caches: 2 [ 152.346715][ T7009] loop0: detected capacity change from 0 to 32768 [ 152.382548][ T7009] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 152.384015][ T7009] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 152.386607][ T7009] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 152.388276][ T4857] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 152.389331][ T4857] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 152.406117][ T7011] loop2: detected capacity change from 0 to 32768 [ 152.429407][ T4857] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 40ms [ 152.430652][ T4857] gfs2: fsid=syz:syz.0: jid=0: Done [ 152.431512][ T7009] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 152.436189][ T7009] syz.0.611 (7009): drop_caches: 2 [ 152.501464][ T7011] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 152.502735][ T7011] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 152.505521][ T7011] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 152.508096][ T4857] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 152.509092][ T4857] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 152.535552][ T4857] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 26ms [ 152.536865][ T4857] gfs2: fsid=syz:syz.0: jid=0: Done [ 152.537715][ T7011] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 152.545140][ T7011] syz.2.613 (7011): drop_caches: 2 [ 152.605226][ T7015] loop1: detected capacity change from 0 to 32768 [ 152.644157][ T7015] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 152.645073][ T7013] loop4: detected capacity change from 0 to 32768 [ 152.645402][ T7015] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 152.649640][ T7013] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 152.650448][ T7015] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 152.650749][ T7013] CPU: 1 PID: 7013 Comm: syz.4.612 Not tainted syzkaller #0 [ 152.653070][ T7013] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 152.654656][ T7013] Call trace: [ 152.655109][ T7013] dump_backtrace+0x0/0x43c [ 152.655859][ T7013] show_stack+0x2c/0x3c [ 152.656496][ T7013] __dump_stack+0x30/0x40 [ 152.657172][ T7013] dump_stack_lvl+0xf8/0x160 [ 152.657949][ T7013] dump_stack+0x1c/0x5c [ 152.658646][ T7013] sysfs_create_dir_ns+0x22c/0x24c [ 152.659456][ T7013] kobject_add_internal+0x590/0xc54 [ 152.660207][ T7013] kobject_init_and_add+0x118/0x17c [ 152.660969][ T7013] gfs2_sys_fs_add+0x1dc/0x3d8 [ 152.661688][ T7013] gfs2_fill_super+0xdac/0x19e0 [ 152.662380][ T7013] get_tree_bdev+0x358/0x544 [ 152.663073][ T7013] gfs2_get_tree+0x54/0x1b4 [ 152.663721][ T7013] vfs_get_tree+0x90/0x274 [ 152.664405][ T7013] do_new_mount+0x228/0x810 [ 152.665110][ T7013] path_mount+0x5b4/0x1000 [ 152.665715][ T7013] __arm64_sys_mount+0x514/0x5e4 [ 152.666419][ T7013] invoke_syscall+0x98/0x2b8 [ 152.667112][ T7013] el0_svc_common+0x138/0x258 [ 152.667856][ T7013] do_el0_svc+0x58/0x14c [ 152.668492][ T7013] el0_svc+0x78/0x1e0 [ 152.668948][ T4856] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 152.669103][ T7013] el0t_64_sync_handler+0xcc/0xe4 [ 152.670236][ T4856] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 152.670857][ T7013] el0t_64_sync+0x1a0/0x1a4 [ 152.709069][ T4856] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 38ms [ 152.710483][ T4856] gfs2: fsid=syz:syz.0: jid=0: Done [ 152.711329][ T7015] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 152.716656][ T7015] syz.1.615 (7015): drop_caches: 2 [ 152.718975][ T7013] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 152.726710][ T7013] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 152.728523][ T7013] syz.4.612 (7013): drop_caches: 2 [ 152.772811][ T7017] loop3: detected capacity change from 0 to 32768 [ 152.861657][ T7017] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 152.862993][ T7017] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 152.866009][ T7017] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 152.869893][ T4856] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 152.870829][ T4856] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 152.905291][ T4856] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 34ms [ 152.906480][ T4856] gfs2: fsid=syz:syz.0: jid=0: Done [ 152.907253][ T7017] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 152.913792][ T7017] syz.3.614 (7017): drop_caches: 2 [ 152.948901][ T7019] loop0: detected capacity change from 0 to 32768 1970/01/01 00:02:32 executed programs: 614 [ 153.014481][ T7019] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 153.015834][ T7019] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 153.018761][ T7019] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 153.027952][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 153.028894][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 153.068482][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 39ms [ 153.074745][ T7021] loop2: detected capacity change from 0 to 32768 [ 153.077869][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 153.078721][ T7019] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 153.084126][ T7019] syz.0.616 (7019): drop_caches: 2 [ 153.101648][ T7021] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 153.102725][ T7021] CPU: 0 PID: 7021 Comm: syz.2.617 Not tainted syzkaller #0 [ 153.103875][ T7021] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 153.105292][ T7021] Call trace: [ 153.105750][ T7021] dump_backtrace+0x0/0x43c [ 153.106408][ T7021] show_stack+0x2c/0x3c [ 153.107063][ T7021] __dump_stack+0x30/0x40 [ 153.107720][ T7021] dump_stack_lvl+0xf8/0x160 [ 153.108508][ T7021] dump_stack+0x1c/0x5c [ 153.109154][ T7021] sysfs_create_dir_ns+0x22c/0x24c [ 153.109928][ T7021] kobject_add_internal+0x590/0xc54 [ 153.110711][ T7021] kobject_init_and_add+0x118/0x17c [ 153.111524][ T7021] gfs2_sys_fs_add+0x1dc/0x3d8 [ 153.112230][ T7021] gfs2_fill_super+0xdac/0x19e0 [ 153.112925][ T7021] get_tree_bdev+0x358/0x544 [ 153.113538][ T7021] gfs2_get_tree+0x54/0x1b4 [ 153.114179][ T7021] vfs_get_tree+0x90/0x274 [ 153.114823][ T7021] do_new_mount+0x228/0x810 [ 153.115450][ T7021] path_mount+0x5b4/0x1000 [ 153.116084][ T7021] __arm64_sys_mount+0x514/0x5e4 [ 153.116780][ T7021] invoke_syscall+0x98/0x2b8 [ 153.117428][ T7021] el0_svc_common+0x138/0x258 [ 153.118069][ T7021] do_el0_svc+0x58/0x14c [ 153.118681][ T7021] el0_svc+0x78/0x1e0 [ 153.119294][ T7021] el0t_64_sync_handler+0xcc/0xe4 [ 153.120045][ T7021] el0t_64_sync+0x1a0/0x1a4 [ 153.122707][ T7023] loop4: detected capacity change from 0 to 32768 [ 153.160848][ T7021] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 153.161225][ T7023] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 153.162829][ T7021] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 153.165318][ T7023] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 153.173744][ T7023] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 153.177821][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 153.178942][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 153.213187][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 34ms [ 153.214363][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 153.215214][ T7023] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 153.220978][ T7023] syz.4.619 (7023): drop_caches: 2 [ 153.268840][ T7025] loop1: detected capacity change from 0 to 32768 [ 153.295494][ T7025] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 153.296772][ T7025] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 153.299929][ T7025] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 153.301711][ T7021] syz.2.617 (7021): drop_caches: 2 [ 153.308536][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 153.309602][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 153.340453][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 30ms [ 153.341625][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 153.342379][ T7025] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 153.346696][ T7025] syz.1.618 (7025): drop_caches: 2 [ 153.423716][ T7027] loop3: detected capacity change from 0 to 32768 [ 153.504358][ T7027] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 153.505571][ T7027] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 153.510920][ T7027] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 153.525778][ T7029] loop0: detected capacity change from 0 to 32768 [ 153.527272][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 153.528346][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 153.558183][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 29ms [ 153.559553][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 153.560467][ T7027] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 153.565104][ T7027] syz.3.620 (7027): drop_caches: 2 [ 153.631110][ T7029] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 153.632307][ T7029] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 153.644326][ T7029] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 153.649851][ T4159] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 153.650846][ T4159] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 153.693907][ T4159] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 43ms [ 153.695563][ T4159] gfs2: fsid=syz:syz.0: jid=0: Done [ 153.696394][ T7029] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 153.704037][ T7029] syz.0.621 (7029): drop_caches: 2 [ 153.760720][ T7031] loop2: detected capacity change from 0 to 32768 [ 153.768880][ T7031] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 153.779197][ T7031] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 153.784951][ T7031] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 153.787140][ T4159] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 153.788187][ T4159] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 153.832761][ T4159] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 44ms [ 153.834084][ T4159] gfs2: fsid=syz:syz.0: jid=0: Done [ 153.834903][ T7031] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 153.840123][ T7031] syz.2.623 (7031): drop_caches: 2 [ 153.888936][ T7033] loop4: detected capacity change from 0 to 32768 [ 153.898562][ T7035] loop1: detected capacity change from 0 to 32768 [ 153.921955][ T7033] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 153.923205][ T7033] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 153.924479][ T7035] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 153.925612][ T7035] CPU: 1 PID: 7035 Comm: syz.1.624 Not tainted syzkaller #0 [ 153.926649][ T7035] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 153.928139][ T7035] Call trace: [ 153.928594][ T7035] dump_backtrace+0x0/0x43c [ 153.929218][ T7035] show_stack+0x2c/0x3c [ 153.929786][ T7035] __dump_stack+0x30/0x40 [ 153.930381][ T7035] dump_stack_lvl+0xf8/0x160 [ 153.931030][ T7035] dump_stack+0x1c/0x5c [ 153.931614][ T7035] sysfs_create_dir_ns+0x22c/0x24c [ 153.932306][ T7035] kobject_add_internal+0x590/0xc54 [ 153.933065][ T7035] kobject_init_and_add+0x118/0x17c [ 153.933770][ T7035] gfs2_sys_fs_add+0x1dc/0x3d8 [ 153.934447][ T7035] gfs2_fill_super+0xdac/0x19e0 [ 153.935134][ T7035] get_tree_bdev+0x358/0x544 [ 153.935797][ T7035] gfs2_get_tree+0x54/0x1b4 [ 153.936434][ T7035] vfs_get_tree+0x90/0x274 [ 153.937089][ T7035] do_new_mount+0x228/0x810 [ 153.937771][ T7035] path_mount+0x5b4/0x1000 [ 153.938390][ T7035] __arm64_sys_mount+0x514/0x5e4 [ 153.939150][ T7035] invoke_syscall+0x98/0x2b8 [ 153.939813][ T7035] el0_svc_common+0x138/0x258 [ 153.940544][ T7035] do_el0_svc+0x58/0x14c [ 153.941160][ T7035] el0_svc+0x78/0x1e0 [ 153.941747][ T7035] el0t_64_sync_handler+0xcc/0xe4 [ 153.942507][ T7035] el0t_64_sync+0x1a0/0x1a4 [ 153.948367][ T7033] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 153.950710][ T4857] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 153.951746][ T4857] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 153.993081][ T4857] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 41ms [ 153.994311][ T4857] gfs2: fsid=syz:syz.0: jid=0: Done [ 153.995129][ T7033] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 154.003135][ T7033] syz.4.622 (7033): drop_caches: 2 [ 154.013100][ T7035] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 154.023216][ T7035] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 154.037772][ T7035] syz.1.624 (7035): drop_caches: 2 [ 154.118687][ T7037] loop3: detected capacity change from 0 to 32768 [ 154.163458][ T7037] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 154.164724][ T7037] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 154.174081][ T7037] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 154.188525][ T4857] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 154.189549][ T4857] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 154.214955][ T7039] loop0: detected capacity change from 0 to 32768 [ 154.222276][ T7039] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 154.223427][ T7039] CPU: 0 PID: 7039 Comm: syz.0.626 Not tainted syzkaller #0 [ 154.224564][ T7039] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 154.226052][ T7039] Call trace: [ 154.226570][ T7039] dump_backtrace+0x0/0x43c [ 154.227294][ T7039] show_stack+0x2c/0x3c [ 154.227867][ T7039] __dump_stack+0x30/0x40 [ 154.228521][ T7039] dump_stack_lvl+0xf8/0x160 [ 154.229197][ T7039] dump_stack+0x1c/0x5c [ 154.229801][ T7039] sysfs_create_dir_ns+0x22c/0x24c [ 154.230519][ T7039] kobject_add_internal+0x590/0xc54 [ 154.231270][ T7039] kobject_init_and_add+0x118/0x17c [ 154.232044][ T7039] gfs2_sys_fs_add+0x1dc/0x3d8 [ 154.232717][ T7039] gfs2_fill_super+0xdac/0x19e0 [ 154.233380][ T7039] get_tree_bdev+0x358/0x544 [ 154.234044][ T7039] gfs2_get_tree+0x54/0x1b4 [ 154.234736][ T7039] vfs_get_tree+0x90/0x274 [ 154.235298][ T7039] do_new_mount+0x228/0x810 [ 154.235874][ T7039] path_mount+0x5b4/0x1000 [ 154.236478][ T7039] __arm64_sys_mount+0x514/0x5e4 [ 154.237199][ T7039] invoke_syscall+0x98/0x2b8 [ 154.237805][ T7039] el0_svc_common+0x138/0x258 [ 154.238465][ T7039] do_el0_svc+0x58/0x14c [ 154.239050][ T7039] el0_svc+0x78/0x1e0 [ 154.239584][ T7039] el0t_64_sync_handler+0xcc/0xe4 [ 154.240263][ T7039] el0t_64_sync+0x1a0/0x1a4 [ 154.244066][ T4857] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 54ms [ 154.245224][ T4857] gfs2: fsid=syz:syz.0: jid=0: Done [ 154.246084][ T7037] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 154.250378][ T7037] syz.3.625 (7037): drop_caches: 2 [ 154.269937][ T7039] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 154.272017][ T7039] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 154.376686][ T7041] loop2: detected capacity change from 0 to 32768 [ 154.429354][ T7041] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 154.430587][ T7041] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 154.434269][ T7041] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 154.437380][ T4159] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 154.437909][ T7039] syz.0.626 (7039): drop_caches: 2 [ 154.438383][ T4159] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 154.486866][ T4159] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 48ms [ 154.488114][ T4159] gfs2: fsid=syz:syz.0: jid=0: Done [ 154.488937][ T7041] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 154.495467][ T7041] syz.2.627 (7041): drop_caches: 2 [ 154.521879][ T7043] loop1: detected capacity change from 0 to 32768 [ 154.561102][ T7045] loop4: detected capacity change from 0 to 32768 [ 154.583380][ T7043] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 154.584695][ T7043] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 154.594557][ T7043] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 154.602951][ T4856] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 154.604094][ T4856] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 154.612695][ T7045] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 154.613886][ T7045] CPU: 1 PID: 7045 Comm: syz.4.628 Not tainted syzkaller #0 [ 154.615018][ T7045] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 154.616574][ T7045] Call trace: [ 154.617079][ T7045] dump_backtrace+0x0/0x43c [ 154.617791][ T7045] show_stack+0x2c/0x3c [ 154.618427][ T7045] __dump_stack+0x30/0x40 [ 154.619093][ T7045] dump_stack_lvl+0xf8/0x160 [ 154.619797][ T7045] dump_stack+0x1c/0x5c [ 154.620410][ T7045] sysfs_create_dir_ns+0x22c/0x24c [ 154.621312][ T7045] kobject_add_internal+0x590/0xc54 [ 154.622212][ T7045] kobject_init_and_add+0x118/0x17c [ 154.623050][ T7045] gfs2_sys_fs_add+0x1dc/0x3d8 [ 154.623814][ T7045] gfs2_fill_super+0xdac/0x19e0 [ 154.624563][ T7045] get_tree_bdev+0x358/0x544 [ 154.625252][ T7045] gfs2_get_tree+0x54/0x1b4 [ 154.625887][ T7045] vfs_get_tree+0x90/0x274 [ 154.626536][ T7045] do_new_mount+0x228/0x810 [ 154.627161][ T7045] path_mount+0x5b4/0x1000 [ 154.627809][ T7045] __arm64_sys_mount+0x514/0x5e4 [ 154.628600][ T7045] invoke_syscall+0x98/0x2b8 [ 154.629310][ T7045] el0_svc_common+0x138/0x258 [ 154.630111][ T7045] do_el0_svc+0x58/0x14c [ 154.630716][ T7045] el0_svc+0x78/0x1e0 [ 154.631319][ T7045] el0t_64_sync_handler+0xcc/0xe4 [ 154.632094][ T7045] el0t_64_sync+0x1a0/0x1a4 [ 154.643249][ T4856] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 39ms [ 154.644479][ T4856] gfs2: fsid=syz:syz.0: jid=0: Done [ 154.645289][ T7043] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 154.650370][ T7043] syz.1.629 (7043): drop_caches: 2 [ 154.686747][ T7045] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 154.688902][ T7045] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 154.695919][ T7047] loop3: detected capacity change from 0 to 32768 [ 154.700019][ T7045] syz.4.628 (7045): drop_caches: 2 [ 154.714901][ T7047] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 154.716047][ T7047] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 154.725142][ T7047] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 154.726846][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 154.727934][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 154.763426][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 35ms [ 154.764769][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 154.765732][ T7047] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 154.770787][ T7047] syz.3.630 (7047): drop_caches: 2 [ 155.003813][ T7050] loop0: detected capacity change from 0 to 32768 [ 155.045382][ T7052] loop2: detected capacity change from 0 to 32768 [ 155.047080][ T7050] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 155.048248][ T7050] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 155.050936][ T7050] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 155.052681][ T4857] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 155.053760][ T4857] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 155.057944][ T7052] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 155.059104][ T7052] CPU: 1 PID: 7052 Comm: syz.2.632 Not tainted syzkaller #0 [ 155.060277][ T7052] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 155.061857][ T7052] Call trace: [ 155.062370][ T7052] dump_backtrace+0x0/0x43c [ 155.063064][ T7052] show_stack+0x2c/0x3c [ 155.063732][ T7052] __dump_stack+0x30/0x40 [ 155.064465][ T7052] dump_stack_lvl+0xf8/0x160 [ 155.065171][ T7052] dump_stack+0x1c/0x5c [ 155.065755][ T7052] sysfs_create_dir_ns+0x22c/0x24c [ 155.066542][ T7052] kobject_add_internal+0x590/0xc54 [ 155.067299][ T7052] kobject_init_and_add+0x118/0x17c [ 155.068052][ T7052] gfs2_sys_fs_add+0x1dc/0x3d8 [ 155.068825][ T7052] gfs2_fill_super+0xdac/0x19e0 [ 155.069576][ T7052] get_tree_bdev+0x358/0x544 [ 155.070239][ T7052] gfs2_get_tree+0x54/0x1b4 [ 155.070910][ T7052] vfs_get_tree+0x90/0x274 [ 155.071599][ T7052] do_new_mount+0x228/0x810 [ 155.072278][ T7052] path_mount+0x5b4/0x1000 [ 155.072925][ T7052] __arm64_sys_mount+0x514/0x5e4 [ 155.073652][ T7052] invoke_syscall+0x98/0x2b8 [ 155.074391][ T7052] el0_svc_common+0x138/0x258 [ 155.075109][ T7052] do_el0_svc+0x58/0x14c [ 155.075799][ T7052] el0_svc+0x78/0x1e0 [ 155.076394][ T7052] el0t_64_sync_handler+0xcc/0xe4 [ 155.077166][ T7052] el0t_64_sync+0x1a0/0x1a4 [ 155.099104][ T4857] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 45ms [ 155.100509][ T4857] gfs2: fsid=syz:syz.0: jid=0: Done [ 155.101359][ T7050] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 155.106090][ T7050] syz.0.631 (7050): drop_caches: 2 [ 155.138359][ T7052] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 155.140749][ T7052] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 155.142973][ T7052] syz.2.632 (7052): drop_caches: 2 [ 155.186554][ T7058] loop3: detected capacity change from 0 to 32768 [ 155.207181][ T7054] loop1: detected capacity change from 0 to 32768 [ 155.227156][ T7054] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 155.228431][ T7054] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 155.234987][ T7058] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 155.236059][ T7058] CPU: 0 PID: 7058 Comm: syz.3.635 Not tainted syzkaller #0 [ 155.237120][ T7058] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 155.238673][ T7058] Call trace: [ 155.239139][ T7058] dump_backtrace+0x0/0x43c [ 155.239786][ T7058] show_stack+0x2c/0x3c [ 155.240319][ T7058] __dump_stack+0x30/0x40 [ 155.240962][ T7058] dump_stack_lvl+0xf8/0x160 [ 155.241617][ T7058] dump_stack+0x1c/0x5c [ 155.242198][ T7058] sysfs_create_dir_ns+0x22c/0x24c [ 155.242970][ T7058] kobject_add_internal+0x590/0xc54 [ 155.243776][ T7058] kobject_init_and_add+0x118/0x17c [ 155.244565][ T7058] gfs2_sys_fs_add+0x1dc/0x3d8 [ 155.245250][ T7058] gfs2_fill_super+0xdac/0x19e0 [ 155.245925][ T7058] get_tree_bdev+0x358/0x544 [ 155.246552][ T7058] gfs2_get_tree+0x54/0x1b4 [ 155.247168][ T7058] vfs_get_tree+0x90/0x274 [ 155.247786][ T7058] do_new_mount+0x228/0x810 [ 155.248420][ T7058] path_mount+0x5b4/0x1000 [ 155.249022][ T7058] __arm64_sys_mount+0x514/0x5e4 [ 155.249726][ T7058] invoke_syscall+0x98/0x2b8 [ 155.250393][ T7058] el0_svc_common+0x138/0x258 [ 155.251103][ T7058] do_el0_svc+0x58/0x14c [ 155.251651][ T7058] el0_svc+0x78/0x1e0 [ 155.252254][ T7058] el0t_64_sync_handler+0xcc/0xe4 [ 155.252982][ T7058] el0t_64_sync+0x1a0/0x1a4 [ 155.263746][ T7056] loop4: detected capacity change from 0 to 32768 [ 155.270108][ T7054] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 155.271922][ T4856] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 155.272762][ T4856] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 155.287828][ T7058] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 155.290151][ T4856] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 17ms [ 155.291296][ T4856] gfs2: fsid=syz:syz.0: jid=0: Done [ 155.292058][ T7054] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 155.297582][ T7054] syz.1.633 (7054): drop_caches: 2 [ 155.300866][ T7058] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 155.342507][ T7056] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 155.343815][ T7056] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 155.347064][ T7056] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 155.349960][ T4856] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 155.351212][ T4856] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 155.417425][ T4856] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 66ms [ 155.418708][ T4856] gfs2: fsid=syz:syz.0: jid=0: Done [ 155.429266][ T7056] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 155.433919][ T7056] syz.4.634 (7056): drop_caches: 2 [ 155.440535][ T7058] syz.3.635 (7058): drop_caches: 2 [ 155.585375][ T7064] loop1: detected capacity change from 0 to 32768 [ 155.623855][ T7064] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 155.625097][ T7064] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 155.628132][ T7064] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 155.629723][ T4159] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 155.630805][ T4159] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 155.649783][ T7062] loop2: detected capacity change from 0 to 32768 [ 155.654149][ T7060] loop0: detected capacity change from 0 to 32768 [ 155.677219][ T4159] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 46ms [ 155.678446][ T4159] gfs2: fsid=syz:syz.0: jid=0: Done [ 155.679337][ T7064] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 155.684627][ T7064] syz.1.638 (7064): drop_caches: 2 [ 155.695045][ T7060] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 155.696156][ T7060] CPU: 0 PID: 7060 Comm: syz.0.636 Not tainted syzkaller #0 [ 155.697231][ T7060] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 155.698815][ T7060] Call trace: [ 155.699265][ T7060] dump_backtrace+0x0/0x43c [ 155.699921][ T7060] show_stack+0x2c/0x3c [ 155.700503][ T7060] __dump_stack+0x30/0x40 [ 155.701165][ T7060] dump_stack_lvl+0xf8/0x160 [ 155.701821][ T7060] dump_stack+0x1c/0x5c [ 155.702443][ T7060] sysfs_create_dir_ns+0x22c/0x24c [ 155.703159][ T7060] kobject_add_internal+0x590/0xc54 [ 155.703942][ T7060] kobject_init_and_add+0x118/0x17c [ 155.704690][ T7060] gfs2_sys_fs_add+0x1dc/0x3d8 [ 155.705375][ T7060] gfs2_fill_super+0xdac/0x19e0 [ 155.706108][ T7060] get_tree_bdev+0x358/0x544 [ 155.706779][ T7060] gfs2_get_tree+0x54/0x1b4 [ 155.707427][ T7060] vfs_get_tree+0x90/0x274 [ 155.708021][ T7060] do_new_mount+0x228/0x810 [ 155.708660][ T7060] path_mount+0x5b4/0x1000 [ 155.709265][ T7060] __arm64_sys_mount+0x514/0x5e4 [ 155.710023][ T7060] invoke_syscall+0x98/0x2b8 [ 155.710730][ T7060] el0_svc_common+0x138/0x258 [ 155.711437][ T7060] do_el0_svc+0x58/0x14c [ 155.712105][ T7060] el0_svc+0x78/0x1e0 [ 155.712719][ T7060] el0t_64_sync_handler+0xcc/0xe4 [ 155.713468][ T7060] el0t_64_sync+0x1a0/0x1a4 [ 155.720779][ T7062] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 155.721896][ T7062] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 155.724485][ T7062] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 155.726269][ T4856] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 155.727322][ T4856] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 155.783487][ T4856] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 56ms [ 155.784771][ T4856] gfs2: fsid=syz:syz.0: jid=0: Done [ 155.785601][ T7062] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 155.790736][ T7062] syz.2.637 (7062): drop_caches: 2 [ 155.805236][ T7060] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 155.807261][ T7060] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 155.833772][ T7060] syz.0.636 (7060): drop_caches: 2 [ 155.871867][ T7068] syz.4.639 (7068): drop_caches: 2 [ 155.876491][ T7066] loop3: detected capacity change from 0 to 32768 [ 155.934520][ T7066] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 155.935766][ T7066] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 155.938572][ T7066] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 155.952721][ T4159] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 155.953681][ T4159] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 155.989383][ T4159] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 35ms [ 155.990500][ T4159] gfs2: fsid=syz:syz.0: jid=0: Done [ 155.991232][ T7066] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 155.995093][ T7066] syz.3.640 (7066): drop_caches: 2 [ 156.174751][ T7070] loop1: detected capacity change from 0 to 32768 [ 156.195310][ T7070] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 156.199603][ T7070] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 156.206050][ T7070] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 156.218190][ T4857] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 156.219143][ T4857] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 156.259501][ T4857] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 40ms [ 156.261235][ T4857] gfs2: fsid=syz:syz.0: jid=0: Done [ 156.262065][ T7070] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 156.267388][ T7070] syz.1.641 (7070): drop_caches: 2 [ 156.327086][ T7072] loop0: detected capacity change from 0 to 32768 [ 156.358137][ T7074] loop4: detected capacity change from 0 to 32768 [ 156.375053][ T7076] loop2: detected capacity change from 0 to 32768 [ 156.401458][ T7072] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 156.402699][ T7072] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 156.405398][ T7072] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 156.412955][ T4159] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 156.413916][ T4159] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 156.418761][ T7078] loop3: detected capacity change from 0 to 32768 [ 156.421439][ T7076] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 156.422562][ T7076] CPU: 0 PID: 7076 Comm: syz.2.642 Not tainted syzkaller #0 [ 156.423605][ T7076] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 156.425050][ T7076] Call trace: [ 156.425508][ T7076] dump_backtrace+0x0/0x43c [ 156.426188][ T7076] show_stack+0x2c/0x3c [ 156.426830][ T7076] __dump_stack+0x30/0x40 [ 156.427474][ T7076] dump_stack_lvl+0xf8/0x160 [ 156.428082][ T7076] dump_stack+0x1c/0x5c [ 156.428665][ T7076] sysfs_create_dir_ns+0x22c/0x24c [ 156.429380][ T7076] kobject_add_internal+0x590/0xc54 [ 156.430121][ T7076] kobject_init_and_add+0x118/0x17c [ 156.430962][ T7076] gfs2_sys_fs_add+0x1dc/0x3d8 [ 156.431616][ T7076] gfs2_fill_super+0xdac/0x19e0 [ 156.432239][ T7076] get_tree_bdev+0x358/0x544 [ 156.432972][ T7076] gfs2_get_tree+0x54/0x1b4 [ 156.433609][ T7076] vfs_get_tree+0x90/0x274 [ 156.434216][ T7076] do_new_mount+0x228/0x810 [ 156.434970][ T7076] path_mount+0x5b4/0x1000 [ 156.435656][ T7076] __arm64_sys_mount+0x514/0x5e4 [ 156.436378][ T7076] invoke_syscall+0x98/0x2b8 [ 156.437035][ T7076] el0_svc_common+0x138/0x258 [ 156.437761][ T7076] do_el0_svc+0x58/0x14c [ 156.438433][ T7076] el0_svc+0x78/0x1e0 [ 156.438989][ T7076] el0t_64_sync_handler+0xcc/0xe4 [ 156.439709][ T7076] el0t_64_sync+0x1a0/0x1a4 [ 156.453537][ T7074] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 156.454723][ T7074] CPU: 0 PID: 7074 Comm: syz.4.644 Not tainted syzkaller #0 [ 156.455886][ T7074] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 156.457494][ T7074] Call trace: [ 156.457999][ T7074] dump_backtrace+0x0/0x43c [ 156.458669][ T7074] show_stack+0x2c/0x3c [ 156.459278][ T7074] __dump_stack+0x30/0x40 [ 156.459925][ T7074] dump_stack_lvl+0xf8/0x160 [ 156.460704][ T7074] dump_stack+0x1c/0x5c [ 156.461365][ T7074] sysfs_create_dir_ns+0x22c/0x24c [ 156.462169][ T7074] kobject_add_internal+0x590/0xc54 [ 156.462997][ T7074] kobject_init_and_add+0x118/0x17c [ 156.463872][ T7074] gfs2_sys_fs_add+0x1dc/0x3d8 [ 156.464617][ T7074] gfs2_fill_super+0xdac/0x19e0 [ 156.465357][ T7074] get_tree_bdev+0x358/0x544 [ 156.466068][ T7074] gfs2_get_tree+0x54/0x1b4 [ 156.466763][ T7074] vfs_get_tree+0x90/0x274 [ 156.467412][ T7074] do_new_mount+0x228/0x810 [ 156.468009][ T7074] path_mount+0x5b4/0x1000 [ 156.468618][ T7074] __arm64_sys_mount+0x514/0x5e4 [ 156.469332][ T7074] invoke_syscall+0x98/0x2b8 [ 156.470036][ T7074] el0_svc_common+0x138/0x258 [ 156.470771][ T7074] do_el0_svc+0x58/0x14c [ 156.471394][ T7074] el0_svc+0x78/0x1e0 [ 156.471962][ T7074] el0t_64_sync_handler+0xcc/0xe4 [ 156.472693][ T7074] el0t_64_sync+0x1a0/0x1a4 [ 156.477022][ T4159] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 63ms [ 156.478230][ T4159] gfs2: fsid=syz:syz.0: jid=0: Done [ 156.478650][ T7076] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 156.479003][ T7072] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 156.483718][ T7078] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 156.484917][ T7078] CPU: 0 PID: 7078 Comm: syz.3.645 Not tainted syzkaller #0 [ 156.486042][ T7078] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 156.487442][ T7078] Call trace: [ 156.487896][ T7078] dump_backtrace+0x0/0x43c [ 156.488534][ T7078] show_stack+0x2c/0x3c [ 156.489126][ T7078] __dump_stack+0x30/0x40 [ 156.489771][ T7078] dump_stack_lvl+0xf8/0x160 [ 156.490503][ T7078] dump_stack+0x1c/0x5c [ 156.491141][ T7078] sysfs_create_dir_ns+0x22c/0x24c [ 156.491878][ T7078] kobject_add_internal+0x590/0xc54 [ 156.492576][ T7078] kobject_init_and_add+0x118/0x17c [ 156.493331][ T7078] gfs2_sys_fs_add+0x1dc/0x3d8 [ 156.494056][ T7078] gfs2_fill_super+0xdac/0x19e0 [ 156.494757][ T7078] get_tree_bdev+0x358/0x544 [ 156.495394][ T7078] gfs2_get_tree+0x54/0x1b4 [ 156.496070][ T7078] vfs_get_tree+0x90/0x274 [ 156.496713][ T7078] do_new_mount+0x228/0x810 [ 156.497400][ T7078] path_mount+0x5b4/0x1000 [ 156.498055][ T7078] __arm64_sys_mount+0x514/0x5e4 [ 156.498779][ T7078] invoke_syscall+0x98/0x2b8 [ 156.499457][ T7078] el0_svc_common+0x138/0x258 [ 156.500110][ T7078] do_el0_svc+0x58/0x14c [ 156.500706][ T7078] el0_svc+0x78/0x1e0 [ 156.501245][ T7078] el0t_64_sync_handler+0xcc/0xe4 [ 156.501932][ T7078] el0t_64_sync+0x1a0/0x1a4 [ 156.505017][ T7076] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 156.505398][ T7072] syz.0.643 (7072): drop_caches: 2 [ 156.506321][ T7078] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 156.514102][ T7076] syz.2.642 (7076): drop_caches: 2 [ 156.516879][ T7078] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 156.518234][ T7074] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 156.520459][ T7074] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 156.522175][ T7078] syz.3.645 (7078): drop_caches: 2 [ 156.523490][ T7074] syz.4.644 (7074): drop_caches: 2 [ 156.762175][ T7080] loop1: detected capacity change from 0 to 32768 [ 156.801752][ T7080] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 156.803044][ T7080] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 156.805954][ T7080] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 156.811401][ T4159] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 156.812457][ T4159] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 156.844901][ T7084] syz.3.649 (7084): drop_caches: 2 [ 156.858824][ T4159] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 46ms [ 156.860268][ T4159] gfs2: fsid=syz:syz.0: jid=0: Done [ 156.861137][ T7080] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 156.873833][ T7080] syz.1.646 (7080): drop_caches: 2 [ 156.974125][ T7086] loop4: detected capacity change from 0 to 32768 [ 157.014543][ T7086] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 157.015727][ T7086] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 157.023390][ T7086] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 157.030364][ T7083] loop2: detected capacity change from 0 to 32768 [ 157.035658][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 157.036637][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 157.078704][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 42ms [ 157.080058][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 157.080913][ T7086] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 157.090537][ T7086] syz.4.650 (7086): drop_caches: 2 [ 157.096816][ T7088] loop0: detected capacity change from 0 to 32768 [ 157.140409][ T7083] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 157.141564][ T7083] CPU: 0 PID: 7083 Comm: syz.2.648 Not tainted syzkaller #0 [ 157.142670][ T7083] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 157.144110][ T7083] Call trace: [ 157.144638][ T7083] dump_backtrace+0x0/0x43c [ 157.145310][ T7083] show_stack+0x2c/0x3c [ 157.145911][ T7083] __dump_stack+0x30/0x40 [ 157.146576][ T7083] dump_stack_lvl+0xf8/0x160 [ 157.147236][ T7083] dump_stack+0x1c/0x5c [ 157.147864][ T7083] sysfs_create_dir_ns+0x22c/0x24c [ 157.148612][ T7083] kobject_add_internal+0x590/0xc54 [ 157.149330][ T7083] kobject_init_and_add+0x118/0x17c [ 157.150137][ T7083] gfs2_sys_fs_add+0x1dc/0x3d8 [ 157.150774][ T7083] gfs2_fill_super+0xdac/0x19e0 [ 157.151443][ T7083] get_tree_bdev+0x358/0x544 [ 157.152090][ T7083] gfs2_get_tree+0x54/0x1b4 [ 157.152753][ T7083] vfs_get_tree+0x90/0x274 [ 157.153390][ T7083] do_new_mount+0x228/0x810 [ 157.153968][ T7083] path_mount+0x5b4/0x1000 [ 157.154600][ T7083] __arm64_sys_mount+0x514/0x5e4 [ 157.155436][ T7083] invoke_syscall+0x98/0x2b8 [ 157.156106][ T7083] el0_svc_common+0x138/0x258 [ 157.156807][ T7083] do_el0_svc+0x58/0x14c [ 157.157426][ T7083] el0_svc+0x78/0x1e0 [ 157.157975][ T7083] el0t_64_sync_handler+0xcc/0xe4 [ 157.158717][ T7083] el0t_64_sync+0x1a0/0x1a4 [ 157.164336][ T7088] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 157.165425][ T7088] CPU: 0 PID: 7088 Comm: syz.0.647 Not tainted syzkaller #0 [ 157.166588][ T7088] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 157.168106][ T7088] Call trace: [ 157.168564][ T7088] dump_backtrace+0x0/0x43c [ 157.169236][ T7088] show_stack+0x2c/0x3c [ 157.169899][ T7088] __dump_stack+0x30/0x40 [ 157.170538][ T7088] dump_stack_lvl+0xf8/0x160 [ 157.171232][ T7088] dump_stack+0x1c/0x5c [ 157.171861][ T7088] sysfs_create_dir_ns+0x22c/0x24c [ 157.172646][ T7088] kobject_add_internal+0x590/0xc54 [ 157.173442][ T7088] kobject_init_and_add+0x118/0x17c [ 157.174225][ T7088] gfs2_sys_fs_add+0x1dc/0x3d8 [ 157.174906][ T7088] gfs2_fill_super+0xdac/0x19e0 [ 157.175561][ T7088] get_tree_bdev+0x358/0x544 [ 157.176208][ T7088] gfs2_get_tree+0x54/0x1b4 [ 157.176835][ T7088] vfs_get_tree+0x90/0x274 [ 157.177447][ T7088] do_new_mount+0x228/0x810 [ 157.178044][ T7088] path_mount+0x5b4/0x1000 [ 157.178663][ T7088] __arm64_sys_mount+0x514/0x5e4 [ 157.179371][ T7088] invoke_syscall+0x98/0x2b8 [ 157.179991][ T7088] el0_svc_common+0x138/0x258 [ 157.180677][ T7088] do_el0_svc+0x58/0x14c [ 157.181303][ T7088] el0_svc+0x78/0x1e0 [ 157.181845][ T7088] el0t_64_sync_handler+0xcc/0xe4 [ 157.182490][ T7088] el0t_64_sync+0x1a0/0x1a4 [ 157.205663][ T7083] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 157.207759][ T7083] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 157.210199][ T7083] syz.2.648 (7083): drop_caches: 2 [ 157.227932][ T7088] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 157.235605][ T7088] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 157.248626][ T7088] syz.0.647 (7088): drop_caches: 2 [ 157.261180][ T7090] loop3: detected capacity change from 0 to 32768 [ 157.325296][ T7092] loop1: detected capacity change from 0 to 32768 [ 157.331385][ T7090] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 157.332649][ T7090] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 157.340095][ T7090] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 157.347967][ T4151] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 157.349022][ T4151] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 157.376227][ T7092] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 157.376378][ T4151] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 27ms [ 157.377322][ T7092] CPU: 0 PID: 7092 Comm: syz.1.652 Not tainted syzkaller #0 [ 157.378551][ T4151] gfs2: fsid=syz:syz.0: jid=0: Done [ 157.379647][ T7092] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 157.379660][ T7092] Call trace: [ 157.379666][ T7092] dump_backtrace+0x0/0x43c [ 157.379681][ T7092] show_stack+0x2c/0x3c [ 157.379687][ T7092] __dump_stack+0x30/0x40 [ 157.379696][ T7092] dump_stack_lvl+0xf8/0x160 [ 157.379702][ T7092] dump_stack+0x1c/0x5c [ 157.379708][ T7092] sysfs_create_dir_ns+0x22c/0x24c [ 157.379716][ T7092] kobject_add_internal+0x590/0xc54 [ 157.379723][ T7092] kobject_init_and_add+0x118/0x17c [ 157.379730][ T7092] gfs2_sys_fs_add+0x1dc/0x3d8 [ 157.379737][ T7092] gfs2_fill_super+0xdac/0x19e0 [ 157.379743][ T7092] get_tree_bdev+0x358/0x544 [ 157.379749][ T7092] gfs2_get_tree+0x54/0x1b4 [ 157.379754][ T7092] vfs_get_tree+0x90/0x274 [ 157.379759][ T7092] do_new_mount+0x228/0x810 [ 157.379764][ T7092] path_mount+0x5b4/0x1000 [ 157.391930][ T7092] __arm64_sys_mount+0x514/0x5e4 [ 157.392631][ T7092] invoke_syscall+0x98/0x2b8 [ 157.393256][ T7092] el0_svc_common+0x138/0x258 [ 157.393899][ T7092] do_el0_svc+0x58/0x14c [ 157.394523][ T7092] el0_svc+0x78/0x1e0 [ 157.394945][ T7090] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 157.395074][ T7092] el0t_64_sync_handler+0xcc/0xe4 [ 157.396821][ T7092] el0t_64_sync+0x1a0/0x1a4 [ 157.412240][ T7090] syz.3.651 (7090): drop_caches: 2 [ 157.419127][ T7092] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 157.441050][ T7092] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 157.442839][ T7092] syz.1.652 (7092): drop_caches: 2 [ 157.657270][ T7094] loop4: detected capacity change from 0 to 32768 [ 157.677528][ T7096] loop2: detected capacity change from 0 to 32768 [ 157.724822][ T7098] loop0: detected capacity change from 0 to 32768 [ 157.733124][ T7096] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 157.734400][ T7096] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 157.735540][ T7094] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 157.736492][ T7094] CPU: 0 PID: 7094 Comm: syz.4.653 Not tainted syzkaller #0 [ 157.737486][ T7094] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 157.738926][ T7094] Call trace: [ 157.739361][ T7094] dump_backtrace+0x0/0x43c [ 157.740026][ T7094] show_stack+0x2c/0x3c [ 157.740671][ T7094] __dump_stack+0x30/0x40 [ 157.741271][ T7094] dump_stack_lvl+0xf8/0x160 [ 157.741919][ T7094] dump_stack+0x1c/0x5c [ 157.742512][ T7094] sysfs_create_dir_ns+0x22c/0x24c [ 157.743250][ T7094] kobject_add_internal+0x590/0xc54 [ 157.744019][ T7094] kobject_init_and_add+0x118/0x17c [ 157.744756][ T7094] gfs2_sys_fs_add+0x1dc/0x3d8 [ 157.745427][ T7094] gfs2_fill_super+0xdac/0x19e0 [ 157.746116][ T7094] get_tree_bdev+0x358/0x544 [ 157.746753][ T7094] gfs2_get_tree+0x54/0x1b4 [ 157.747390][ T7094] vfs_get_tree+0x90/0x274 [ 157.748027][ T7094] do_new_mount+0x228/0x810 [ 157.748644][ T7094] path_mount+0x5b4/0x1000 [ 157.749265][ T7094] __arm64_sys_mount+0x514/0x5e4 [ 157.749952][ T7094] invoke_syscall+0x98/0x2b8 [ 157.750585][ T7094] el0_svc_common+0x138/0x258 [ 157.751239][ T7094] do_el0_svc+0x58/0x14c [ 157.751815][ T7094] el0_svc+0x78/0x1e0 [ 157.752429][ T7094] el0t_64_sync_handler+0xcc/0xe4 [ 157.753123][ T7094] el0t_64_sync+0x1a0/0x1a4 [ 157.758912][ T7096] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 157.762530][ T7100] loop1: detected capacity change from 0 to 32768 [ 157.762600][ T7098] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 157.764684][ T7098] CPU: 0 PID: 7098 Comm: syz.0.655 Not tainted syzkaller #0 [ 157.765688][ T7098] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 157.767108][ T7098] Call trace: [ 157.767621][ T7098] dump_backtrace+0x0/0x43c [ 157.768274][ T7098] show_stack+0x2c/0x3c [ 157.768916][ T7098] __dump_stack+0x30/0x40 [ 157.769521][ T7098] dump_stack_lvl+0xf8/0x160 [ 157.770166][ T7098] dump_stack+0x1c/0x5c [ 157.770792][ T7098] sysfs_create_dir_ns+0x22c/0x24c [ 157.771545][ T7098] kobject_add_internal+0x590/0xc54 [ 157.772231][ T7098] kobject_init_and_add+0x118/0x17c [ 157.772989][ T7098] gfs2_sys_fs_add+0x1dc/0x3d8 [ 157.773636][ T7098] gfs2_fill_super+0xdac/0x19e0 [ 157.774350][ T7098] get_tree_bdev+0x358/0x544 [ 157.775014][ T7098] gfs2_get_tree+0x54/0x1b4 [ 157.775610][ T7098] vfs_get_tree+0x90/0x274 [ 157.776304][ T7098] do_new_mount+0x228/0x810 [ 157.776944][ T7098] path_mount+0x5b4/0x1000 [ 157.777575][ T7098] __arm64_sys_mount+0x514/0x5e4 [ 157.778265][ T7098] invoke_syscall+0x98/0x2b8 [ 157.778939][ T7098] el0_svc_common+0x138/0x258 [ 157.779602][ T7098] do_el0_svc+0x58/0x14c [ 157.780226][ T7098] el0_svc+0x78/0x1e0 [ 157.780775][ T7098] el0t_64_sync_handler+0xcc/0xe4 [ 157.781486][ T7098] el0t_64_sync+0x1a0/0x1a4 [ 157.789869][ T7094] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 157.792090][ T7094] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 157.794016][ T7094] syz.4.653 (7094): drop_caches: 2 [ 157.804178][ T4857] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 157.805193][ T4857] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 157.827986][ T7098] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 157.829998][ T7098] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 157.835762][ T4857] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 30ms [ 157.836967][ T4857] gfs2: fsid=syz:syz.0: jid=0: Done [ 157.837784][ T7096] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 157.845869][ T7096] syz.2.654 (7096): drop_caches: 2 [ 157.875361][ T7102] loop3: detected capacity change from 0 to 32768 [ 157.891096][ T7100] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 157.892369][ T7100] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 157.894974][ T7100] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 157.896687][ T4857] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 157.897773][ T4857] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 157.914131][ T7102] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 157.915196][ T7102] CPU: 0 PID: 7102 Comm: syz.3.656 Not tainted syzkaller #0 [ 157.916261][ T7102] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 157.917780][ T7102] Call trace: [ 157.918256][ T7102] dump_backtrace+0x0/0x43c [ 157.918912][ T7102] show_stack+0x2c/0x3c [ 157.919495][ T7102] __dump_stack+0x30/0x40 [ 157.920209][ T7102] dump_stack_lvl+0xf8/0x160 [ 157.920905][ T7102] dump_stack+0x1c/0x5c [ 157.921573][ T7102] sysfs_create_dir_ns+0x22c/0x24c [ 157.922318][ T7102] kobject_add_internal+0x590/0xc54 [ 157.923082][ T7102] kobject_init_and_add+0x118/0x17c [ 157.923810][ T7102] gfs2_sys_fs_add+0x1dc/0x3d8 [ 157.924533][ T7102] gfs2_fill_super+0xdac/0x19e0 [ 157.925191][ T7102] get_tree_bdev+0x358/0x544 [ 157.925869][ T7102] gfs2_get_tree+0x54/0x1b4 [ 157.926595][ T7102] vfs_get_tree+0x90/0x274 [ 157.927192][ T7102] do_new_mount+0x228/0x810 [ 157.927833][ T7102] path_mount+0x5b4/0x1000 [ 157.928433][ T7102] __arm64_sys_mount+0x514/0x5e4 [ 157.929106][ T7102] invoke_syscall+0x98/0x2b8 [ 157.929730][ T7102] el0_svc_common+0x138/0x258 [ 157.930363][ T7102] do_el0_svc+0x58/0x14c [ 157.930957][ T7102] el0_svc+0x78/0x1e0 [ 157.931540][ T7102] el0t_64_sync_handler+0xcc/0xe4 [ 157.932246][ T7102] el0t_64_sync+0x1a0/0x1a4 [ 157.992308][ T4857] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 94ms [ 157.993608][ T4857] gfs2: fsid=syz:syz.0: jid=0: Done [ 157.994508][ T7100] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 157.999630][ T7098] syz.0.655 (7098): drop_caches: 2 [ 157.999999][ T7100] syz.1.657 (7100): drop_caches: 2 [ 158.013195][ T7102] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 158.015291][ T7102] gfs2: fsid=syz:syz: error -17 adding sysfs files 1970/01/01 00:02:38 executed programs: 654 [ 158.165459][ T7107] loop2: detected capacity change from 0 to 32768 [ 158.172179][ T7107] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 158.173397][ T7107] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 158.173991][ T7102] syz.3.656 (7102): drop_caches: 2 [ 158.195540][ T7107] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 158.199713][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 158.200772][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 158.226964][ T7105] loop4: detected capacity change from 0 to 32768 [ 158.240252][ T7105] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 158.241445][ T7105] CPU: 1 PID: 7105 Comm: syz.4.658 Not tainted syzkaller #0 [ 158.242693][ T7105] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 158.244150][ T7105] Call trace: [ 158.244637][ T7105] dump_backtrace+0x0/0x43c [ 158.245304][ T7105] show_stack+0x2c/0x3c [ 158.245967][ T7105] __dump_stack+0x30/0x40 [ 158.246633][ T7105] dump_stack_lvl+0xf8/0x160 [ 158.247362][ T7105] dump_stack+0x1c/0x5c [ 158.248056][ T7105] sysfs_create_dir_ns+0x22c/0x24c [ 158.248812][ T7105] kobject_add_internal+0x590/0xc54 [ 158.249596][ T7105] kobject_init_and_add+0x118/0x17c [ 158.250386][ T7105] gfs2_sys_fs_add+0x1dc/0x3d8 [ 158.251126][ T7105] gfs2_fill_super+0xdac/0x19e0 [ 158.251834][ T7105] get_tree_bdev+0x358/0x544 [ 158.252539][ T7105] gfs2_get_tree+0x54/0x1b4 [ 158.253202][ T7105] vfs_get_tree+0x90/0x274 [ 158.253818][ T7105] do_new_mount+0x228/0x810 [ 158.254431][ T7105] path_mount+0x5b4/0x1000 [ 158.255102][ T7105] __arm64_sys_mount+0x514/0x5e4 [ 158.255821][ T7105] invoke_syscall+0x98/0x2b8 [ 158.256503][ T7105] el0_svc_common+0x138/0x258 [ 158.257216][ T7105] do_el0_svc+0x58/0x14c [ 158.257850][ T7105] el0_svc+0x78/0x1e0 [ 158.258423][ T7105] el0t_64_sync_handler+0xcc/0xe4 [ 158.259185][ T7105] el0t_64_sync+0x1a0/0x1a4 [ 158.264444][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 63ms [ 158.265646][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 158.266528][ T7107] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 158.272759][ T7107] syz.2.659 (7107): drop_caches: 2 [ 158.302063][ T7105] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 158.317311][ T7105] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 158.504131][ T7105] syz.4.658 (7105): drop_caches: 2 [ 158.519662][ T7109] loop0: detected capacity change from 0 to 32768 [ 158.535024][ T7109] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 158.536326][ T7109] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 158.544917][ T7109] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 158.554997][ T4858] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 158.555983][ T4858] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 158.586607][ T7112] loop1: detected capacity change from 0 to 32768 [ 158.591350][ T4858] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 35ms [ 158.592568][ T4858] gfs2: fsid=syz:syz.0: jid=0: Done [ 158.593453][ T7109] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 158.598064][ T7109] syz.0.660 (7109): drop_caches: 2 [ 158.621006][ T7112] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 158.622251][ T7112] CPU: 0 PID: 7112 Comm: syz.1.661 Not tainted syzkaller #0 [ 158.623403][ T7112] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 158.624939][ T7112] Call trace: [ 158.625377][ T7112] dump_backtrace+0x0/0x43c [ 158.626022][ T7112] show_stack+0x2c/0x3c [ 158.626669][ T7112] __dump_stack+0x30/0x40 [ 158.627393][ T7112] dump_stack_lvl+0xf8/0x160 [ 158.628066][ T7112] dump_stack+0x1c/0x5c [ 158.628704][ T7112] sysfs_create_dir_ns+0x22c/0x24c [ 158.629437][ T7112] kobject_add_internal+0x590/0xc54 [ 158.630189][ T7112] kobject_init_and_add+0x118/0x17c [ 158.630959][ T7112] gfs2_sys_fs_add+0x1dc/0x3d8 [ 158.631642][ T7112] gfs2_fill_super+0xdac/0x19e0 [ 158.632298][ T7112] get_tree_bdev+0x358/0x544 [ 158.632972][ T7112] gfs2_get_tree+0x54/0x1b4 [ 158.633615][ T7112] vfs_get_tree+0x90/0x274 [ 158.634237][ T7112] do_new_mount+0x228/0x810 [ 158.634884][ T7112] path_mount+0x5b4/0x1000 [ 158.635501][ T7112] __arm64_sys_mount+0x514/0x5e4 [ 158.636178][ T7112] invoke_syscall+0x98/0x2b8 [ 158.636826][ T7112] el0_svc_common+0x138/0x258 [ 158.637506][ T7112] do_el0_svc+0x58/0x14c [ 158.638063][ T7112] el0_svc+0x78/0x1e0 [ 158.638623][ T7112] el0t_64_sync_handler+0xcc/0xe4 [ 158.639354][ T7112] el0t_64_sync+0x1a0/0x1a4 [ 158.651280][ T7114] loop3: detected capacity change from 0 to 32768 [ 158.668379][ T7112] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 158.670636][ T7112] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 158.679894][ T7112] syz.1.661 (7112): drop_caches: 2 [ 158.742894][ T7114] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 158.744113][ T7114] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 158.747739][ T7114] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 158.757760][ T4858] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 158.758875][ T4858] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 158.782978][ T7116] loop2: detected capacity change from 0 to 32768 [ 158.792730][ T4858] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 33ms [ 158.793905][ T4858] gfs2: fsid=syz:syz.0: jid=0: Done [ 158.794743][ T7114] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 158.798835][ T7114] syz.3.662 (7114): drop_caches: 2 [ 158.832344][ T7116] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 158.833674][ T7116] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 158.839148][ T7116] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 158.892453][ T4858] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 158.893526][ T4858] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 158.937900][ T7118] loop4: detected capacity change from 0 to 32768 [ 158.948221][ T4858] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 54ms [ 158.949366][ T4858] gfs2: fsid=syz:syz.0: jid=0: Done [ 158.950148][ T7116] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 158.955291][ T7116] syz.2.663 (7116): drop_caches: 2 [ 159.032803][ T7120] loop0: detected capacity change from 0 to 32768 [ 159.046328][ T7118] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 159.047497][ T7118] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 159.051030][ T7118] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 159.052688][ T4151] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 159.053767][ T4151] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 159.058795][ T7122] loop1: detected capacity change from 0 to 32768 [ 159.092639][ T4151] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 38ms [ 159.093930][ T4151] gfs2: fsid=syz:syz.0: jid=0: Done [ 159.094765][ T7118] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 159.098612][ T7118] syz.4.664 (7118): drop_caches: 2 [ 159.152700][ T7120] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 159.153842][ T7120] CPU: 0 PID: 7120 Comm: syz.0.665 Not tainted syzkaller #0 [ 159.154954][ T7120] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 159.156465][ T7120] Call trace: [ 159.156943][ T7120] dump_backtrace+0x0/0x43c [ 159.157621][ T7120] show_stack+0x2c/0x3c [ 159.158230][ T7120] __dump_stack+0x30/0x40 [ 159.158889][ T7120] dump_stack_lvl+0xf8/0x160 [ 159.159555][ T7120] dump_stack+0x1c/0x5c [ 159.160175][ T7120] sysfs_create_dir_ns+0x22c/0x24c [ 159.160930][ T7120] kobject_add_internal+0x590/0xc54 [ 159.161640][ T7120] kobject_init_and_add+0x118/0x17c [ 159.162403][ T7120] gfs2_sys_fs_add+0x1dc/0x3d8 [ 159.163063][ T7120] gfs2_fill_super+0xdac/0x19e0 [ 159.163771][ T7120] get_tree_bdev+0x358/0x544 [ 159.164438][ T7120] gfs2_get_tree+0x54/0x1b4 [ 159.165063][ T7120] vfs_get_tree+0x90/0x274 [ 159.165675][ T7120] do_new_mount+0x228/0x810 [ 159.166312][ T7120] path_mount+0x5b4/0x1000 [ 159.166965][ T7120] __arm64_sys_mount+0x514/0x5e4 [ 159.167626][ T7120] invoke_syscall+0x98/0x2b8 [ 159.168241][ T7120] el0_svc_common+0x138/0x258 [ 159.168874][ T7120] do_el0_svc+0x58/0x14c [ 159.169523][ T7120] el0_svc+0x78/0x1e0 [ 159.170152][ T7120] el0t_64_sync_handler+0xcc/0xe4 [ 159.170917][ T7120] el0t_64_sync+0x1a0/0x1a4 [ 159.171896][ T7122] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 159.172921][ T7122] CPU: 0 PID: 7122 Comm: syz.1.666 Not tainted syzkaller #0 [ 159.173919][ T7122] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 159.175311][ T7122] Call trace: [ 159.175776][ T7122] dump_backtrace+0x0/0x43c [ 159.176399][ T7122] show_stack+0x2c/0x3c [ 159.176994][ T7122] __dump_stack+0x30/0x40 [ 159.177583][ T7122] dump_stack_lvl+0xf8/0x160 [ 159.178195][ T7122] dump_stack+0x1c/0x5c [ 159.178756][ T7122] sysfs_create_dir_ns+0x22c/0x24c [ 159.179454][ T7122] kobject_add_internal+0x590/0xc54 [ 159.180168][ T7122] kobject_init_and_add+0x118/0x17c [ 159.180882][ T7122] gfs2_sys_fs_add+0x1dc/0x3d8 [ 159.181539][ T7122] gfs2_fill_super+0xdac/0x19e0 [ 159.182218][ T7122] get_tree_bdev+0x358/0x544 [ 159.182885][ T7122] gfs2_get_tree+0x54/0x1b4 [ 159.183523][ T7122] vfs_get_tree+0x90/0x274 [ 159.184138][ T7122] do_new_mount+0x228/0x810 [ 159.184777][ T7122] path_mount+0x5b4/0x1000 [ 159.185375][ T7122] __arm64_sys_mount+0x514/0x5e4 [ 159.186042][ T7122] invoke_syscall+0x98/0x2b8 [ 159.186673][ T7122] el0_svc_common+0x138/0x258 [ 159.187315][ T7122] do_el0_svc+0x58/0x14c [ 159.187901][ T7122] el0_svc+0x78/0x1e0 [ 159.188427][ T7122] el0t_64_sync_handler+0xcc/0xe4 [ 159.189120][ T7122] el0t_64_sync+0x1a0/0x1a4 [ 159.205213][ T7124] loop3: detected capacity change from 0 to 32768 [ 159.232139][ T7122] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 159.234183][ T7122] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 159.235381][ T7120] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 159.237348][ T7120] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 159.240068][ T7120] syz.0.665 (7120): drop_caches: 2 [ 159.252386][ T7126] loop2: detected capacity change from 0 to 32768 [ 159.261145][ T7124] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 159.262446][ T7124] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 159.265327][ T7124] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 159.273005][ T7126] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 159.274073][ T7126] CPU: 1 PID: 7126 Comm: syz.2.668 Not tainted syzkaller #0 [ 159.275094][ T7126] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 159.276568][ T7126] Call trace: [ 159.277037][ T7126] dump_backtrace+0x0/0x43c [ 159.277667][ T7126] show_stack+0x2c/0x3c [ 159.278272][ T7126] __dump_stack+0x30/0x40 [ 159.278925][ T7126] dump_stack_lvl+0xf8/0x160 [ 159.279614][ T7126] dump_stack+0x1c/0x5c [ 159.280220][ T7126] sysfs_create_dir_ns+0x22c/0x24c [ 159.281019][ T7126] kobject_add_internal+0x590/0xc54 [ 159.281805][ T7126] kobject_init_and_add+0x118/0x17c [ 159.282613][ T7126] gfs2_sys_fs_add+0x1dc/0x3d8 [ 159.283363][ T7126] gfs2_fill_super+0xdac/0x19e0 [ 159.284094][ T7126] get_tree_bdev+0x358/0x544 [ 159.284770][ T7126] gfs2_get_tree+0x54/0x1b4 [ 159.285438][ T7126] vfs_get_tree+0x90/0x274 [ 159.286118][ T7126] do_new_mount+0x228/0x810 [ 159.286795][ T7126] path_mount+0x5b4/0x1000 [ 159.287477][ T7126] __arm64_sys_mount+0x514/0x5e4 [ 159.288261][ T7126] invoke_syscall+0x98/0x2b8 [ 159.288973][ T7126] el0_svc_common+0x138/0x258 [ 159.289658][ T7126] do_el0_svc+0x58/0x14c [ 159.290245][ T7126] el0_svc+0x78/0x1e0 [ 159.290803][ T7126] el0t_64_sync_handler+0xcc/0xe4 [ 159.291477][ T7126] el0t_64_sync+0x1a0/0x1a4 [ 159.293671][ T4151] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 159.294676][ T4151] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 159.330604][ T4151] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 35ms [ 159.331874][ T4151] gfs2: fsid=syz:syz.0: jid=0: Done [ 159.332734][ T7124] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 159.338239][ T7126] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 159.344201][ T7126] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 159.348445][ T7124] syz.3.667 (7124): drop_caches: 2 [ 159.363132][ T7122] syz.1.666 (7122): drop_caches: 2 [ 159.500443][ T7126] syz.2.668 (7126): drop_caches: 2 [ 159.629095][ T7129] loop4: detected capacity change from 0 to 32768 [ 159.635104][ T7131] syz.0.670 (7131): drop_caches: 2 [ 159.743302][ T7129] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 159.744649][ T7129] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 159.747475][ T7129] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 159.754562][ T4151] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 159.755695][ T4151] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 159.775121][ T7133] loop3: detected capacity change from 0 to 32768 [ 159.792577][ T7135] loop1: detected capacity change from 0 to 32768 [ 159.801211][ T7133] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 159.802255][ T7133] CPU: 0 PID: 7133 Comm: syz.3.671 Not tainted syzkaller #0 [ 159.803282][ T7133] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 159.804697][ T7133] Call trace: [ 159.805191][ T7133] dump_backtrace+0x0/0x43c [ 159.805829][ T7133] show_stack+0x2c/0x3c [ 159.806454][ T7133] __dump_stack+0x30/0x40 [ 159.807099][ T7133] dump_stack_lvl+0xf8/0x160 [ 159.807822][ T7133] dump_stack+0x1c/0x5c [ 159.808493][ T7133] sysfs_create_dir_ns+0x22c/0x24c [ 159.809242][ T7133] kobject_add_internal+0x590/0xc54 [ 159.810008][ T7133] kobject_init_and_add+0x118/0x17c [ 159.810721][ T7133] gfs2_sys_fs_add+0x1dc/0x3d8 [ 159.811375][ T7133] gfs2_fill_super+0xdac/0x19e0 [ 159.812094][ T7133] get_tree_bdev+0x358/0x544 [ 159.812741][ T7133] gfs2_get_tree+0x54/0x1b4 [ 159.813356][ T7133] vfs_get_tree+0x90/0x274 [ 159.813992][ T7133] do_new_mount+0x228/0x810 [ 159.814604][ T7133] path_mount+0x5b4/0x1000 [ 159.814726][ T4151] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 59ms [ 159.815234][ T7133] __arm64_sys_mount+0x514/0x5e4 [ 159.816525][ T4151] gfs2: fsid=syz:syz.0: jid=0: Done [ 159.817035][ T7133] invoke_syscall+0x98/0x2b8 [ 159.818416][ T7133] el0_svc_common+0x138/0x258 [ 159.819056][ T7133] do_el0_svc+0x58/0x14c [ 159.819613][ T7133] el0_svc+0x78/0x1e0 [ 159.820185][ T7133] el0t_64_sync_handler+0xcc/0xe4 [ 159.820878][ T7133] el0t_64_sync+0x1a0/0x1a4 [ 159.821725][ T7129] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 159.825431][ T7129] syz.4.669 (7129): drop_caches: 2 [ 159.852246][ T7135] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 159.853388][ T7135] CPU: 0 PID: 7135 Comm: syz.1.672 Not tainted syzkaller #0 [ 159.854414][ T7135] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 159.855857][ T7135] Call trace: [ 159.856365][ T7135] dump_backtrace+0x0/0x43c [ 159.857042][ T7135] show_stack+0x2c/0x3c [ 159.857635][ T7135] __dump_stack+0x30/0x40 [ 159.858299][ T7135] dump_stack_lvl+0xf8/0x160 [ 159.858956][ T7135] dump_stack+0x1c/0x5c [ 159.859597][ T7135] sysfs_create_dir_ns+0x22c/0x24c [ 159.860372][ T7135] kobject_add_internal+0x590/0xc54 [ 159.861213][ T7135] kobject_init_and_add+0x118/0x17c [ 159.861967][ T7135] gfs2_sys_fs_add+0x1dc/0x3d8 [ 159.862685][ T7135] gfs2_fill_super+0xdac/0x19e0 [ 159.863414][ T7135] get_tree_bdev+0x358/0x544 [ 159.864123][ T7135] gfs2_get_tree+0x54/0x1b4 [ 159.864727][ T7135] vfs_get_tree+0x90/0x274 [ 159.865321][ T7135] do_new_mount+0x228/0x810 [ 159.866028][ T7135] path_mount+0x5b4/0x1000 [ 159.866706][ T7135] __arm64_sys_mount+0x514/0x5e4 [ 159.867450][ T7135] invoke_syscall+0x98/0x2b8 [ 159.868098][ T7135] el0_svc_common+0x138/0x258 [ 159.868771][ T7135] do_el0_svc+0x58/0x14c [ 159.869366][ T7135] el0_svc+0x78/0x1e0 [ 159.869986][ T7135] el0t_64_sync_handler+0xcc/0xe4 [ 159.870756][ T7135] el0t_64_sync+0x1a0/0x1a4 [ 159.876292][ T7137] loop2: detected capacity change from 0 to 32768 [ 159.877494][ T7133] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 159.885945][ T7133] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 159.905585][ T7133] syz.3.671 (7133): drop_caches: 2 [ 159.911271][ T7137] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 159.912407][ T7137] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 159.922109][ T7135] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 159.924117][ T7135] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 159.930326][ T7135] syz.1.672 (7135): drop_caches: 2 [ 159.943040][ T7137] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 159.949494][ T4151] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 159.950604][ T4151] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 159.986320][ T4151] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 35ms [ 159.987459][ T4151] gfs2: fsid=syz:syz.0: jid=0: Done [ 159.988159][ T7137] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 159.992383][ T7137] syz.2.673 (7137): drop_caches: 2 [ 160.120800][ T7139] loop0: detected capacity change from 0 to 32768 [ 160.123699][ T7139] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 160.124963][ T7139] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 160.154180][ T7139] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 160.162273][ T4859] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 160.163605][ T4859] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 160.212394][ T4859] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 48ms [ 160.213697][ T4859] gfs2: fsid=syz:syz.0: jid=0: Done [ 160.214453][ T7139] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 160.219618][ T7139] syz.0.674 (7139): drop_caches: 2 [ 160.286500][ T7143] loop3: detected capacity change from 0 to 32768 [ 160.362839][ T7143] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 160.364151][ T7143] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 160.366883][ T7143] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 160.383052][ T4151] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 160.384033][ T4151] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 160.416137][ T4151] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 32ms [ 160.417306][ T4151] gfs2: fsid=syz:syz.0: jid=0: Done [ 160.418121][ T7143] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 160.422911][ T7143] syz.3.676 (7143): drop_caches: 2 [ 160.437071][ T7141] syz.4.675 (7141): drop_caches: 2 [ 160.528328][ T7145] loop1: detected capacity change from 0 to 32768 [ 160.545191][ T7147] loop2: detected capacity change from 0 to 32768 [ 160.641375][ T7145] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 160.642718][ T7145] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 160.646001][ T7145] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 160.646913][ T7147] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 160.648353][ T7147] CPU: 1 PID: 7147 Comm: syz.2.678 Not tainted syzkaller #0 [ 160.649474][ T7147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 160.651020][ T7147] Call trace: [ 160.651527][ T7147] dump_backtrace+0x0/0x43c [ 160.652193][ T7147] show_stack+0x2c/0x3c [ 160.652824][ T7147] __dump_stack+0x30/0x40 [ 160.653503][ T7147] dump_stack_lvl+0xf8/0x160 [ 160.654130][ T7147] dump_stack+0x1c/0x5c [ 160.654694][ T7147] sysfs_create_dir_ns+0x22c/0x24c [ 160.655422][ T7147] kobject_add_internal+0x590/0xc54 [ 160.656214][ T7147] kobject_init_and_add+0x118/0x17c [ 160.656932][ T7147] gfs2_sys_fs_add+0x1dc/0x3d8 [ 160.657598][ T7147] gfs2_fill_super+0xdac/0x19e0 [ 160.658263][ T7147] get_tree_bdev+0x358/0x544 [ 160.658931][ T7147] gfs2_get_tree+0x54/0x1b4 [ 160.659629][ T7147] vfs_get_tree+0x90/0x274 [ 160.660270][ T7147] do_new_mount+0x228/0x810 [ 160.660890][ T7147] path_mount+0x5b4/0x1000 [ 160.661495][ T7147] __arm64_sys_mount+0x514/0x5e4 [ 160.662193][ T7147] invoke_syscall+0x98/0x2b8 [ 160.662833][ T7147] el0_svc_common+0x138/0x258 [ 160.663464][ T7147] do_el0_svc+0x58/0x14c [ 160.664043][ T7147] el0_svc+0x78/0x1e0 [ 160.664610][ T7147] el0t_64_sync_handler+0xcc/0xe4 [ 160.665238][ T7147] el0t_64_sync+0x1a0/0x1a4 [ 160.665705][ T7149] loop0: detected capacity change from 0 to 32768 [ 160.670904][ T4219] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 160.671926][ T4219] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 160.705085][ T4219] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 33ms [ 160.706333][ T4219] gfs2: fsid=syz:syz.0: jid=0: Done [ 160.707098][ T7145] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 160.708632][ T7147] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 160.716064][ T7145] syz.1.677 (7145): drop_caches: 2 [ 160.721062][ T7149] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 160.722128][ T7149] CPU: 0 PID: 7149 Comm: syz.0.679 Not tainted syzkaller #0 [ 160.723196][ T7149] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 160.724705][ T7149] Call trace: [ 160.725172][ T7149] dump_backtrace+0x0/0x43c [ 160.725828][ T7149] show_stack+0x2c/0x3c [ 160.726432][ T7149] __dump_stack+0x30/0x40 [ 160.726951][ T7147] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 160.727033][ T7149] dump_stack_lvl+0xf8/0x160 [ 160.728654][ T7149] dump_stack+0x1c/0x5c [ 160.728811][ T7147] syz.2.678 (7147): drop_caches: 2 [ 160.729232][ T7149] sysfs_create_dir_ns+0x22c/0x24c [ 160.729251][ T7149] kobject_add_internal+0x590/0xc54 [ 160.729260][ T7149] kobject_init_and_add+0x118/0x17c [ 160.729266][ T7149] gfs2_sys_fs_add+0x1dc/0x3d8 [ 160.729273][ T7149] gfs2_fill_super+0xdac/0x19e0 [ 160.733438][ T7149] get_tree_bdev+0x358/0x544 [ 160.734104][ T7149] gfs2_get_tree+0x54/0x1b4 [ 160.734721][ T7149] vfs_get_tree+0x90/0x274 [ 160.735332][ T7149] do_new_mount+0x228/0x810 [ 160.735955][ T7149] path_mount+0x5b4/0x1000 [ 160.736555][ T7149] __arm64_sys_mount+0x514/0x5e4 [ 160.737249][ T7149] invoke_syscall+0x98/0x2b8 [ 160.737894][ T7149] el0_svc_common+0x138/0x258 [ 160.738537][ T7149] do_el0_svc+0x58/0x14c [ 160.739109][ T7149] el0_svc+0x78/0x1e0 [ 160.739625][ T7149] el0t_64_sync_handler+0xcc/0xe4 [ 160.740312][ T7149] el0t_64_sync+0x1a0/0x1a4 [ 160.788193][ T7149] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 160.798293][ T7149] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 160.814608][ T7149] syz.0.679 (7149): drop_caches: 2 [ 160.867120][ T7152] loop4: detected capacity change from 0 to 32768 [ 160.873617][ T7153] loop3: detected capacity change from 0 to 32768 [ 160.875092][ T7152] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 160.876298][ T7152] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 160.884701][ T7152] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 160.888068][ T4858] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 160.889111][ T4858] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 160.925976][ T4858] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 36ms [ 160.927228][ T4858] gfs2: fsid=syz:syz.0: jid=0: Done [ 160.928119][ T7152] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 160.936643][ T7153] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 160.937668][ T7153] CPU: 1 PID: 7153 Comm: syz.3.680 Not tainted syzkaller #0 [ 160.938772][ T7153] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 160.940233][ T7153] Call trace: [ 160.940752][ T7153] dump_backtrace+0x0/0x43c [ 160.941369][ T7153] show_stack+0x2c/0x3c [ 160.941986][ T7153] __dump_stack+0x30/0x40 [ 160.942619][ T7153] dump_stack_lvl+0xf8/0x160 [ 160.943278][ T7153] dump_stack+0x1c/0x5c [ 160.943881][ T7153] sysfs_create_dir_ns+0x22c/0x24c [ 160.944603][ T7153] kobject_add_internal+0x590/0xc54 [ 160.945329][ T7153] kobject_init_and_add+0x118/0x17c [ 160.946116][ T7153] gfs2_sys_fs_add+0x1dc/0x3d8 [ 160.946891][ T7153] gfs2_fill_super+0xdac/0x19e0 [ 160.947626][ T7153] get_tree_bdev+0x358/0x544 [ 160.948286][ T7153] gfs2_get_tree+0x54/0x1b4 [ 160.948997][ T7153] vfs_get_tree+0x90/0x274 [ 160.949669][ T7153] do_new_mount+0x228/0x810 [ 160.950362][ T7153] path_mount+0x5b4/0x1000 [ 160.951070][ T7153] __arm64_sys_mount+0x514/0x5e4 [ 160.951760][ T7153] invoke_syscall+0x98/0x2b8 [ 160.952430][ T7153] el0_svc_common+0x138/0x258 [ 160.953156][ T7153] do_el0_svc+0x58/0x14c [ 160.953792][ T7153] el0_svc+0x78/0x1e0 [ 160.954371][ T7153] el0t_64_sync_handler+0xcc/0xe4 [ 160.955136][ T7153] el0t_64_sync+0x1a0/0x1a4 [ 160.964712][ T7152] syz.4.681 (7152): drop_caches: 2 [ 161.007723][ T7153] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 161.009970][ T7153] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 161.133255][ T7157] loop2: detected capacity change from 0 to 32768 [ 161.164111][ T7157] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 161.165360][ T7157] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 161.168109][ T7157] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 161.178224][ T4219] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 161.182417][ T4219] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 161.187617][ T7156] loop1: detected capacity change from 0 to 32768 [ 161.194688][ T7153] syz.3.680 (7153): drop_caches: 2 [ 161.206342][ T7159] loop0: detected capacity change from 0 to 32768 [ 161.229661][ T4219] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 47ms [ 161.231704][ T7156] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 161.232861][ T7156] CPU: 1 PID: 7156 Comm: syz.1.682 Not tainted syzkaller #0 [ 161.233921][ T7156] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 161.235301][ T7156] Call trace: [ 161.235737][ T7156] dump_backtrace+0x0/0x43c [ 161.236186][ T4219] gfs2: fsid=syz:syz.0: jid=0: Done [ 161.236275][ T7156] show_stack+0x2c/0x3c [ 161.237130][ T7157] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 161.237620][ T7156] __dump_stack+0x30/0x40 [ 161.239229][ T7156] dump_stack_lvl+0xf8/0x160 [ 161.239847][ T7156] dump_stack+0x1c/0x5c [ 161.240424][ T7156] sysfs_create_dir_ns+0x22c/0x24c [ 161.241162][ T7156] kobject_add_internal+0x590/0xc54 [ 161.241866][ T7156] kobject_init_and_add+0x118/0x17c [ 161.242655][ T7156] gfs2_sys_fs_add+0x1dc/0x3d8 [ 161.243335][ T7156] gfs2_fill_super+0xdac/0x19e0 [ 161.243968][ T7156] get_tree_bdev+0x358/0x544 [ 161.244658][ T7156] gfs2_get_tree+0x54/0x1b4 [ 161.244760][ T7157] syz.2.683 (7157): drop_caches: 2 [ 161.245307][ T7156] vfs_get_tree+0x90/0x274 [ 161.246729][ T7156] do_new_mount+0x228/0x810 [ 161.247351][ T7156] path_mount+0x5b4/0x1000 [ 161.247994][ T7156] __arm64_sys_mount+0x514/0x5e4 [ 161.248724][ T7156] invoke_syscall+0x98/0x2b8 [ 161.249381][ T7156] el0_svc_common+0x138/0x258 [ 161.250061][ T7156] do_el0_svc+0x58/0x14c [ 161.250714][ T7156] el0_svc+0x78/0x1e0 [ 161.251332][ T7156] el0t_64_sync_handler+0xcc/0xe4 [ 161.252040][ T7156] el0t_64_sync+0x1a0/0x1a4 [ 161.276329][ T7159] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 161.277510][ T7159] CPU: 1 PID: 7159 Comm: syz.0.684 Not tainted syzkaller #0 [ 161.278755][ T7159] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 161.280309][ T7159] Call trace: [ 161.280797][ T7159] dump_backtrace+0x0/0x43c [ 161.281464][ T7159] show_stack+0x2c/0x3c [ 161.282127][ T7159] __dump_stack+0x30/0x40 [ 161.282770][ T7159] dump_stack_lvl+0xf8/0x160 [ 161.283444][ T7159] dump_stack+0x1c/0x5c [ 161.284059][ T7159] sysfs_create_dir_ns+0x22c/0x24c [ 161.284819][ T7159] kobject_add_internal+0x590/0xc54 [ 161.285688][ T7159] kobject_init_and_add+0x118/0x17c [ 161.286487][ T7159] gfs2_sys_fs_add+0x1dc/0x3d8 [ 161.287181][ T7159] gfs2_fill_super+0xdac/0x19e0 [ 161.287979][ T7159] get_tree_bdev+0x358/0x544 [ 161.288666][ T7159] gfs2_get_tree+0x54/0x1b4 [ 161.289315][ T7159] vfs_get_tree+0x90/0x274 [ 161.289332][ T7159] do_new_mount+0x228/0x810 [ 161.289343][ T7159] path_mount+0x5b4/0x1000 [ 161.291415][ T7159] __arm64_sys_mount+0x514/0x5e4 [ 161.292155][ T7159] invoke_syscall+0x98/0x2b8 [ 161.292844][ T7159] el0_svc_common+0x138/0x258 [ 161.293562][ T7159] do_el0_svc+0x58/0x14c [ 161.294191][ T7159] el0_svc+0x78/0x1e0 [ 161.294769][ T7159] el0t_64_sync_handler+0xcc/0xe4 [ 161.295463][ T7159] el0t_64_sync+0x1a0/0x1a4 [ 161.296602][ T7156] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 161.298136][ T7159] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 161.298410][ T7156] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 161.300494][ T7159] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 161.317592][ T7156] syz.1.682 (7156): drop_caches: 2 [ 161.455915][ T7159] syz.0.684 (7159): drop_caches: 2 [ 161.610094][ T7161] loop4: detected capacity change from 0 to 32768 [ 161.652912][ T7163] loop3: detected capacity change from 0 to 32768 [ 161.691718][ T7163] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 161.693105][ T7163] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 161.696100][ T7163] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 161.697839][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 161.699601][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 161.715154][ T7161] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 161.716361][ T7161] CPU: 0 PID: 7161 Comm: syz.4.685 Not tainted syzkaller #0 [ 161.717500][ T7161] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 161.718910][ T7161] Call trace: [ 161.719424][ T7161] dump_backtrace+0x0/0x43c [ 161.720061][ T7161] show_stack+0x2c/0x3c [ 161.720666][ T7161] __dump_stack+0x30/0x40 [ 161.721281][ T7161] dump_stack_lvl+0xf8/0x160 [ 161.721918][ T7161] dump_stack+0x1c/0x5c [ 161.722541][ T7161] sysfs_create_dir_ns+0x22c/0x24c [ 161.723229][ T7161] kobject_add_internal+0x590/0xc54 [ 161.724025][ T7161] kobject_init_and_add+0x118/0x17c [ 161.724796][ T7161] gfs2_sys_fs_add+0x1dc/0x3d8 [ 161.725448][ T7161] gfs2_fill_super+0xdac/0x19e0 [ 161.726154][ T7161] get_tree_bdev+0x358/0x544 [ 161.726857][ T7161] gfs2_get_tree+0x54/0x1b4 [ 161.727444][ T7161] vfs_get_tree+0x90/0x274 [ 161.728065][ T7161] do_new_mount+0x228/0x810 [ 161.728711][ T7161] path_mount+0x5b4/0x1000 [ 161.729328][ T7161] __arm64_sys_mount+0x514/0x5e4 [ 161.730033][ T7161] invoke_syscall+0x98/0x2b8 [ 161.730688][ T7161] el0_svc_common+0x138/0x258 [ 161.731297][ T7161] do_el0_svc+0x58/0x14c [ 161.731920][ T7161] el0_svc+0x78/0x1e0 [ 161.732498][ T7161] el0t_64_sync_handler+0xcc/0xe4 [ 161.733176][ T7161] el0t_64_sync+0x1a0/0x1a4 [ 161.740797][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 41ms [ 161.741976][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 161.742766][ T7163] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 161.747540][ T7163] syz.3.686 (7163): drop_caches: 2 [ 161.773565][ T7161] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 161.780878][ T7165] loop1: detected capacity change from 0 to 32768 [ 161.782078][ T7161] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 161.784017][ T7161] syz.4.685 (7161): drop_caches: 2 [ 161.820847][ T7169] loop0: detected capacity change from 0 to 32768 [ 161.825193][ T7169] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 161.826425][ T7169] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 161.840974][ T7165] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 161.841957][ T7165] CPU: 0 PID: 7165 Comm: syz.1.688 Not tainted syzkaller #0 [ 161.842012][ T7169] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 161.843000][ T7165] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 161.844686][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 161.845574][ T7165] Call trace: [ 161.846600][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 161.847043][ T7165] dump_backtrace+0x0/0x43c [ 161.848677][ T7165] show_stack+0x2c/0x3c [ 161.849242][ T7165] __dump_stack+0x30/0x40 [ 161.849848][ T7165] dump_stack_lvl+0xf8/0x160 [ 161.850488][ T7165] dump_stack+0x1c/0x5c [ 161.851065][ T7165] sysfs_create_dir_ns+0x22c/0x24c [ 161.851803][ T7165] kobject_add_internal+0x590/0xc54 [ 161.852512][ T7165] kobject_init_and_add+0x118/0x17c [ 161.853241][ T7165] gfs2_sys_fs_add+0x1dc/0x3d8 [ 161.853906][ T7165] gfs2_fill_super+0xdac/0x19e0 [ 161.854552][ T7165] get_tree_bdev+0x358/0x544 [ 161.855163][ T7165] gfs2_get_tree+0x54/0x1b4 [ 161.855826][ T7165] vfs_get_tree+0x90/0x274 [ 161.856444][ T7165] do_new_mount+0x228/0x810 [ 161.857050][ T7165] path_mount+0x5b4/0x1000 [ 161.857639][ T7165] __arm64_sys_mount+0x514/0x5e4 [ 161.858311][ T7165] invoke_syscall+0x98/0x2b8 [ 161.858931][ T7165] el0_svc_common+0x138/0x258 [ 161.859564][ T7165] do_el0_svc+0x58/0x14c [ 161.860149][ T7165] el0_svc+0x78/0x1e0 [ 161.860673][ T7165] el0t_64_sync_handler+0xcc/0xe4 [ 161.861381][ T7165] el0t_64_sync+0x1a0/0x1a4 [ 161.880653][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 34ms [ 161.881942][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 161.883172][ T7169] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 161.886978][ T7169] syz.0.689 (7169): drop_caches: 2 [ 161.892309][ T7167] loop2: detected capacity change from 0 to 32768 [ 161.904590][ T7165] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 161.908842][ T7165] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 161.911814][ T7165] syz.1.688 (7165): drop_caches: 2 [ 161.931595][ T7167] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 161.932859][ T7167] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 161.935879][ T7167] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 161.937607][ T4859] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 161.938521][ T4859] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 161.981379][ T4859] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 42ms [ 161.989345][ T4859] gfs2: fsid=syz:syz.0: jid=0: Done [ 161.990220][ T7167] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 161.994688][ T7167] syz.2.687 (7167): drop_caches: 2 [ 162.186617][ T7173] loop4: detected capacity change from 0 to 32768 [ 162.223323][ T7173] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 162.224607][ T7173] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 162.227333][ T7173] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 162.236037][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 162.237035][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 162.266550][ T7172] loop3: detected capacity change from 0 to 32768 [ 162.266733][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 29ms [ 162.268915][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 162.269796][ T7173] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 162.275069][ T7173] syz.4.691 (7173): drop_caches: 2 [ 162.335572][ T7172] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 162.336800][ T7172] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 162.350972][ T7172] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 162.359930][ T4219] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 162.360855][ T4219] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 162.389568][ T7175] loop1: detected capacity change from 0 to 32768 [ 162.391349][ T4219] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 30ms [ 162.392462][ T4219] gfs2: fsid=syz:syz.0: jid=0: Done [ 162.393183][ T7172] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 162.398347][ T7172] syz.3.690 (7172): drop_caches: 2 [ 162.455859][ T7175] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 162.457139][ T7175] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 162.462888][ T7177] loop0: detected capacity change from 0 to 32768 [ 162.467033][ T7175] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 162.486255][ T4219] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 162.487227][ T4219] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 162.502063][ T7179] loop2: detected capacity change from 0 to 32768 [ 162.525609][ T4219] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 38ms [ 162.528883][ T4219] gfs2: fsid=syz:syz.0: jid=0: Done [ 162.529875][ T7175] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 162.534999][ T7175] syz.1.693 (7175): drop_caches: 2 [ 162.553284][ T7179] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 162.554507][ T7179] CPU: 1 PID: 7179 Comm: syz.2.694 Not tainted syzkaller #0 [ 162.554884][ T7177] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 162.555676][ T7179] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 162.558365][ T7179] Call trace: [ 162.558909][ T7179] dump_backtrace+0x0/0x43c [ 162.559649][ T7179] show_stack+0x2c/0x3c [ 162.560264][ T7179] __dump_stack+0x30/0x40 [ 162.560916][ T7179] dump_stack_lvl+0xf8/0x160 [ 162.561602][ T7179] dump_stack+0x1c/0x5c [ 162.562221][ T7179] sysfs_create_dir_ns+0x22c/0x24c [ 162.562921][ T7179] kobject_add_internal+0x590/0xc54 [ 162.563686][ T7179] kobject_init_and_add+0x118/0x17c [ 162.564472][ T7179] gfs2_sys_fs_add+0x1dc/0x3d8 [ 162.565197][ T7179] gfs2_fill_super+0xdac/0x19e0 [ 162.565841][ T7179] get_tree_bdev+0x358/0x544 [ 162.566469][ T7179] gfs2_get_tree+0x54/0x1b4 [ 162.567083][ T7179] vfs_get_tree+0x90/0x274 [ 162.567750][ T7179] do_new_mount+0x228/0x810 [ 162.568401][ T7179] path_mount+0x5b4/0x1000 [ 162.569050][ T7179] __arm64_sys_mount+0x514/0x5e4 [ 162.569770][ T7179] invoke_syscall+0x98/0x2b8 [ 162.570455][ T7179] el0_svc_common+0x138/0x258 [ 162.571136][ T7179] do_el0_svc+0x58/0x14c [ 162.571714][ T7179] el0_svc+0x78/0x1e0 [ 162.572273][ T7179] el0t_64_sync_handler+0xcc/0xe4 [ 162.572948][ T7179] el0t_64_sync+0x1a0/0x1a4 [ 162.573586][ T7177] CPU: 0 PID: 7177 Comm: syz.0.692 Not tainted syzkaller #0 [ 162.574682][ T7177] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 162.576142][ T7177] Call trace: [ 162.576588][ T7177] dump_backtrace+0x0/0x43c [ 162.577243][ T7177] show_stack+0x2c/0x3c [ 162.577873][ T7177] __dump_stack+0x30/0x40 [ 162.578541][ T7177] dump_stack_lvl+0xf8/0x160 [ 162.579223][ T7177] dump_stack+0x1c/0x5c [ 162.579817][ T7177] sysfs_create_dir_ns+0x22c/0x24c [ 162.580524][ T7177] kobject_add_internal+0x590/0xc54 [ 162.581265][ T7177] kobject_init_and_add+0x118/0x17c [ 162.581970][ T7177] gfs2_sys_fs_add+0x1dc/0x3d8 [ 162.582635][ T7177] gfs2_fill_super+0xdac/0x19e0 [ 162.583348][ T7177] get_tree_bdev+0x358/0x544 [ 162.584009][ T7177] gfs2_get_tree+0x54/0x1b4 [ 162.584664][ T7177] vfs_get_tree+0x90/0x274 [ 162.585341][ T7177] do_new_mount+0x228/0x810 [ 162.586001][ T7177] path_mount+0x5b4/0x1000 [ 162.586699][ T7177] __arm64_sys_mount+0x514/0x5e4 [ 162.587386][ T7177] invoke_syscall+0x98/0x2b8 [ 162.588073][ T7177] el0_svc_common+0x138/0x258 [ 162.588834][ T7177] do_el0_svc+0x58/0x14c [ 162.589223][ T7179] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 162.589440][ T7177] el0_svc+0x78/0x1e0 [ 162.591461][ T7179] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 162.592032][ T7177] el0t_64_sync_handler+0xcc/0xe4 [ 162.593606][ T7177] el0t_64_sync+0x1a0/0x1a4 [ 162.638988][ T7177] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 162.641261][ T7177] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 162.653073][ T7177] syz.0.692 (7177): drop_caches: 2 [ 162.685951][ T7181] loop4: detected capacity change from 0 to 32768 [ 162.703795][ T7179] syz.2.694 (7179): drop_caches: 2 [ 162.722112][ T7181] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 162.724112][ T7181] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 162.726896][ T7181] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 162.740611][ T4858] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 162.741581][ T4858] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 162.785435][ T4858] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 43ms [ 162.786669][ T4858] gfs2: fsid=syz:syz.0: jid=0: Done [ 162.797777][ T7181] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 162.801843][ T7181] syz.4.695 (7181): drop_caches: 2 [ 162.903614][ T7183] loop3: detected capacity change from 0 to 32768 [ 162.951118][ T7183] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 162.952362][ T7183] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 162.955293][ T7183] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 162.963047][ T4858] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 162.964098][ T4858] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 163.005302][ T4858] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 41ms [ 163.006550][ T4858] gfs2: fsid=syz:syz.0: jid=0: Done [ 163.007439][ T7183] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 163.012568][ T7183] syz.3.696 (7183): drop_caches: 2 [ 163.042618][ T7187] loop0: detected capacity change from 0 to 32768 1970/01/01 00:02:43 executed programs: 695 [ 163.081392][ T7185] loop1: detected capacity change from 0 to 32768 [ 163.083701][ T7187] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 163.084892][ T7187] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 163.087842][ T7187] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 163.102105][ T4219] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 163.103097][ T4219] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 163.127169][ T7189] loop2: detected capacity change from 0 to 32768 [ 163.141352][ T7185] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 163.142430][ T7185] CPU: 1 PID: 7185 Comm: syz.1.697 Not tainted syzkaller #0 [ 163.143424][ T7185] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 163.144992][ T7185] Call trace: [ 163.145548][ T7185] dump_backtrace+0x0/0x43c [ 163.146332][ T7185] show_stack+0x2c/0x3c [ 163.146958][ T7185] __dump_stack+0x30/0x40 [ 163.147581][ T7185] dump_stack_lvl+0xf8/0x160 [ 163.148229][ T7185] dump_stack+0x1c/0x5c [ 163.148923][ T7185] sysfs_create_dir_ns+0x22c/0x24c [ 163.149744][ T7185] kobject_add_internal+0x590/0xc54 [ 163.150554][ T7185] kobject_init_and_add+0x118/0x17c [ 163.151326][ T7185] gfs2_sys_fs_add+0x1dc/0x3d8 [ 163.152070][ T7185] gfs2_fill_super+0xdac/0x19e0 [ 163.152840][ T7185] get_tree_bdev+0x358/0x544 [ 163.153467][ T7185] gfs2_get_tree+0x54/0x1b4 [ 163.154136][ T7185] vfs_get_tree+0x90/0x274 [ 163.154759][ T7185] do_new_mount+0x228/0x810 [ 163.155438][ T7185] path_mount+0x5b4/0x1000 [ 163.156095][ T7185] __arm64_sys_mount+0x514/0x5e4 [ 163.156797][ T7185] invoke_syscall+0x98/0x2b8 [ 163.157496][ T7185] el0_svc_common+0x138/0x258 [ 163.158127][ T7185] do_el0_svc+0x58/0x14c [ 163.158745][ T7185] el0_svc+0x78/0x1e0 [ 163.159305][ T7185] el0t_64_sync_handler+0xcc/0xe4 [ 163.160101][ T7185] el0t_64_sync+0x1a0/0x1a4 [ 163.170591][ T7189] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 163.170657][ T4219] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 67ms [ 163.171733][ T7189] CPU: 1 PID: 7189 Comm: syz.2.699 Not tainted syzkaller #0 [ 163.172928][ T4219] gfs2: fsid=syz:syz.0: jid=0: Done [ 163.173903][ T7189] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 163.173917][ T7189] Call trace: [ 163.174716][ T7187] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 163.176247][ T7189] dump_backtrace+0x0/0x43c [ 163.178550][ T7189] show_stack+0x2c/0x3c [ 163.179186][ T7189] __dump_stack+0x30/0x40 [ 163.179830][ T7189] dump_stack_lvl+0xf8/0x160 [ 163.180492][ T7189] dump_stack+0x1c/0x5c [ 163.181082][ T7189] sysfs_create_dir_ns+0x22c/0x24c [ 163.181829][ T7189] kobject_add_internal+0x590/0xc54 [ 163.182680][ T7189] kobject_init_and_add+0x118/0x17c [ 163.183363][ T7187] syz.0.698 (7187): drop_caches: 2 [ 163.183508][ T7189] gfs2_sys_fs_add+0x1dc/0x3d8 [ 163.184986][ T7189] gfs2_fill_super+0xdac/0x19e0 [ 163.185739][ T7189] get_tree_bdev+0x358/0x544 [ 163.186389][ T7189] gfs2_get_tree+0x54/0x1b4 [ 163.187050][ T7189] vfs_get_tree+0x90/0x274 [ 163.187688][ T7189] do_new_mount+0x228/0x810 [ 163.188408][ T7189] path_mount+0x5b4/0x1000 [ 163.189051][ T7189] __arm64_sys_mount+0x514/0x5e4 [ 163.189808][ T7189] invoke_syscall+0x98/0x2b8 [ 163.190450][ T7189] el0_svc_common+0x138/0x258 [ 163.191123][ T7189] do_el0_svc+0x58/0x14c [ 163.191769][ T7189] el0_svc+0x78/0x1e0 [ 163.192365][ T7189] el0t_64_sync_handler+0xcc/0xe4 [ 163.193195][ T7189] el0t_64_sync+0x1a0/0x1a4 [ 163.222595][ T7189] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 163.224587][ T7189] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 163.225913][ T7185] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 163.228115][ T7185] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 163.233319][ T7189] syz.2.699 (7189): drop_caches: 2 [ 163.367642][ T7193] loop3: detected capacity change from 0 to 32768 [ 163.370445][ T7185] syz.1.697 (7185): drop_caches: 2 [ 163.411123][ T7193] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 163.412477][ T7193] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 163.415478][ T7193] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 163.423174][ T4151] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 163.424261][ T4151] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 163.434289][ T7191] loop4: detected capacity change from 0 to 32768 [ 163.469878][ T4151] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 45ms [ 163.471178][ T4151] gfs2: fsid=syz:syz.0: jid=0: Done [ 163.472079][ T7193] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 163.476000][ T7193] syz.3.701 (7193): drop_caches: 2 [ 163.512094][ T7191] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 163.513326][ T7191] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 163.531761][ T7191] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 163.535593][ T4219] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 163.536599][ T4219] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 163.583982][ T4219] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 47ms [ 163.585259][ T4219] gfs2: fsid=syz:syz.0: jid=0: Done [ 163.586060][ T7191] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 163.594596][ T7191] syz.4.700 (7191): drop_caches: 2 [ 163.653617][ T7195] loop0: detected capacity change from 0 to 32768 [ 163.661551][ T7197] loop2: detected capacity change from 0 to 32768 [ 163.669717][ T7197] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 163.670975][ T7197] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 163.681671][ T7197] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 163.683584][ T4219] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 163.684571][ T4219] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 163.703859][ T7195] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 163.705043][ T7195] CPU: 0 PID: 7195 Comm: syz.0.702 Not tainted syzkaller #0 [ 163.706127][ T7195] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 163.707588][ T7195] Call trace: [ 163.708040][ T7195] dump_backtrace+0x0/0x43c [ 163.708655][ T7195] show_stack+0x2c/0x3c [ 163.709212][ T7195] __dump_stack+0x30/0x40 [ 163.709864][ T7195] dump_stack_lvl+0xf8/0x160 [ 163.710523][ T7195] dump_stack+0x1c/0x5c [ 163.711109][ T7195] sysfs_create_dir_ns+0x22c/0x24c [ 163.711845][ T7195] kobject_add_internal+0x590/0xc54 [ 163.712621][ T7195] kobject_init_and_add+0x118/0x17c [ 163.713417][ T7195] gfs2_sys_fs_add+0x1dc/0x3d8 [ 163.714046][ T7195] gfs2_fill_super+0xdac/0x19e0 [ 163.714707][ T7195] get_tree_bdev+0x358/0x544 [ 163.715394][ T7195] gfs2_get_tree+0x54/0x1b4 [ 163.716038][ T7195] vfs_get_tree+0x90/0x274 [ 163.716690][ T7195] do_new_mount+0x228/0x810 [ 163.717321][ T7195] path_mount+0x5b4/0x1000 [ 163.717955][ T7195] __arm64_sys_mount+0x514/0x5e4 [ 163.718677][ T7195] invoke_syscall+0x98/0x2b8 [ 163.719342][ T7195] el0_svc_common+0x138/0x258 [ 163.719982][ T7195] do_el0_svc+0x58/0x14c [ 163.720520][ T7195] el0_svc+0x78/0x1e0 [ 163.721069][ T7195] el0t_64_sync_handler+0xcc/0xe4 [ 163.721792][ T7195] el0t_64_sync+0x1a0/0x1a4 [ 163.731693][ T4219] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 47ms [ 163.733005][ T4219] gfs2: fsid=syz:syz.0: jid=0: Done [ 163.733875][ T7197] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 163.738381][ T7197] syz.2.703 (7197): drop_caches: 2 [ 163.759499][ T7195] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 163.761512][ T7195] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 163.777326][ T7199] loop1: detected capacity change from 0 to 32768 [ 163.779889][ T7199] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 163.780973][ T7199] CPU: 0 PID: 7199 Comm: syz.1.704 Not tainted syzkaller #0 [ 163.782064][ T7199] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 163.783598][ T7199] Call trace: [ 163.784076][ T7199] dump_backtrace+0x0/0x43c [ 163.784771][ T7199] show_stack+0x2c/0x3c [ 163.785428][ T7199] __dump_stack+0x30/0x40 [ 163.786023][ T7199] dump_stack_lvl+0xf8/0x160 [ 163.786788][ T7199] dump_stack+0x1c/0x5c [ 163.787379][ T7199] sysfs_create_dir_ns+0x22c/0x24c [ 163.788121][ T7199] kobject_add_internal+0x590/0xc54 [ 163.788830][ T7199] kobject_init_and_add+0x118/0x17c [ 163.789584][ T7199] gfs2_sys_fs_add+0x1dc/0x3d8 [ 163.790251][ T7199] gfs2_fill_super+0xdac/0x19e0 [ 163.790963][ T7199] get_tree_bdev+0x358/0x544 [ 163.791616][ T7199] gfs2_get_tree+0x54/0x1b4 [ 163.792253][ T7199] vfs_get_tree+0x90/0x274 [ 163.792915][ T7199] do_new_mount+0x228/0x810 [ 163.793544][ T7199] path_mount+0x5b4/0x1000 [ 163.794175][ T7199] __arm64_sys_mount+0x514/0x5e4 [ 163.794833][ T7199] invoke_syscall+0x98/0x2b8 [ 163.795499][ T7199] el0_svc_common+0x138/0x258 [ 163.796105][ T7199] do_el0_svc+0x58/0x14c [ 163.796723][ T7199] el0_svc+0x78/0x1e0 [ 163.797281][ T7199] el0t_64_sync_handler+0xcc/0xe4 [ 163.798018][ T7199] el0t_64_sync+0x1a0/0x1a4 [ 163.809059][ T7199] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 163.811411][ T7199] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 163.813540][ T7199] syz.1.704 (7199): drop_caches: 2 [ 163.953188][ T7195] syz.0.702 (7195): drop_caches: 2 [ 164.044124][ T7201] loop3: detected capacity change from 0 to 32768 [ 164.093653][ T7201] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 164.094860][ T7201] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 164.097477][ T7201] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 164.099275][ T4858] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 164.100328][ T4858] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 164.131117][ T7203] loop4: detected capacity change from 0 to 32768 [ 164.152422][ T4858] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 52ms [ 164.153599][ T4858] gfs2: fsid=syz:syz.0: jid=0: Done [ 164.154470][ T7201] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 164.161448][ T7201] syz.3.705 (7201): drop_caches: 2 [ 164.180599][ T7203] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 164.181651][ T7203] CPU: 1 PID: 7203 Comm: syz.4.706 Not tainted syzkaller #0 [ 164.182736][ T7203] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 164.184276][ T7203] Call trace: [ 164.184742][ T7203] dump_backtrace+0x0/0x43c [ 164.185422][ T7203] show_stack+0x2c/0x3c [ 164.186031][ T7203] __dump_stack+0x30/0x40 [ 164.186705][ T7203] dump_stack_lvl+0xf8/0x160 [ 164.187370][ T7203] dump_stack+0x1c/0x5c [ 164.188009][ T7203] sysfs_create_dir_ns+0x22c/0x24c [ 164.188756][ T7203] kobject_add_internal+0x590/0xc54 [ 164.189525][ T7203] kobject_init_and_add+0x118/0x17c [ 164.190332][ T7203] gfs2_sys_fs_add+0x1dc/0x3d8 [ 164.190387][ T7207] loop2: detected capacity change from 0 to 32768 [ 164.191086][ T7203] gfs2_fill_super+0xdac/0x19e0 [ 164.192804][ T7203] get_tree_bdev+0x358/0x544 [ 164.193473][ T7203] gfs2_get_tree+0x54/0x1b4 [ 164.194141][ T7203] vfs_get_tree+0x90/0x274 [ 164.194797][ T7203] do_new_mount+0x228/0x810 [ 164.195456][ T7203] path_mount+0x5b4/0x1000 [ 164.196109][ T7203] __arm64_sys_mount+0x514/0x5e4 [ 164.196905][ T7203] invoke_syscall+0x98/0x2b8 [ 164.197601][ T7203] el0_svc_common+0x138/0x258 [ 164.198264][ T7203] do_el0_svc+0x58/0x14c [ 164.198902][ T7203] el0_svc+0x78/0x1e0 [ 164.199487][ T7203] el0t_64_sync_handler+0xcc/0xe4 [ 164.200178][ T7203] el0t_64_sync+0x1a0/0x1a4 [ 164.229402][ T7203] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 164.232603][ T7207] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 164.233920][ T7207] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 164.241255][ T7203] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 164.242495][ T7207] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 164.244276][ T4858] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 164.245310][ T4858] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 164.264521][ T7205] loop1: detected capacity change from 0 to 32768 [ 164.276204][ T4858] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 30ms [ 164.277392][ T4858] gfs2: fsid=syz:syz.0: jid=0: Done [ 164.278239][ T7207] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 164.285207][ T7207] syz.2.707 (7207): drop_caches: 2 [ 164.287032][ T7205] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 164.288115][ T7205] CPU: 1 PID: 7205 Comm: syz.1.708 Not tainted syzkaller #0 [ 164.289135][ T7205] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 164.290607][ T7205] Call trace: [ 164.291118][ T7205] dump_backtrace+0x0/0x43c [ 164.291844][ T7205] show_stack+0x2c/0x3c [ 164.292473][ T7205] __dump_stack+0x30/0x40 [ 164.293134][ T7205] dump_stack_lvl+0xf8/0x160 [ 164.293781][ T7205] dump_stack+0x1c/0x5c [ 164.294319][ T7205] sysfs_create_dir_ns+0x22c/0x24c [ 164.295101][ T7205] kobject_add_internal+0x590/0xc54 [ 164.295847][ T7205] kobject_init_and_add+0x118/0x17c [ 164.296638][ T7205] gfs2_sys_fs_add+0x1dc/0x3d8 [ 164.297347][ T7205] gfs2_fill_super+0xdac/0x19e0 [ 164.298052][ T7205] get_tree_bdev+0x358/0x544 [ 164.298697][ T7205] gfs2_get_tree+0x54/0x1b4 [ 164.299364][ T7205] vfs_get_tree+0x90/0x274 [ 164.300017][ T7205] do_new_mount+0x228/0x810 [ 164.300696][ T7205] path_mount+0x5b4/0x1000 [ 164.301333][ T7205] __arm64_sys_mount+0x514/0x5e4 [ 164.302078][ T7205] invoke_syscall+0x98/0x2b8 [ 164.302765][ T7205] el0_svc_common+0x138/0x258 [ 164.303421][ T7205] do_el0_svc+0x58/0x14c [ 164.304026][ T7205] el0_svc+0x78/0x1e0 [ 164.304622][ T7205] el0t_64_sync_handler+0xcc/0xe4 [ 164.305407][ T7205] el0t_64_sync+0x1a0/0x1a4 [ 164.337973][ T7209] loop0: detected capacity change from 0 to 32768 [ 164.343637][ T7203] ================================================================== [ 164.344932][ T7203] BUG: KASAN: use-after-free in gfs2_qd_shrink_scan+0x56c/0x7b0 [ 164.346084][ T7203] Write of size 4 at addr ffff0000d7548a70 by task syz.4.706/7203 [ 164.347261][ T7203] [ 164.347629][ T7203] CPU: 1 PID: 7203 Comm: syz.4.706 Not tainted syzkaller #0 [ 164.348731][ T7203] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 164.350256][ T7203] Call trace: [ 164.350731][ T7203] dump_backtrace+0x0/0x43c [ 164.351435][ T7203] show_stack+0x2c/0x3c [ 164.352066][ T7203] __dump_stack+0x30/0x40 [ 164.352694][ T7203] dump_stack_lvl+0xf8/0x160 [ 164.353477][ T7203] print_address_description+0x78/0x30c [ 164.354350][ T7203] kasan_report+0xec/0x15c [ 164.355060][ T7203] kasan_check_range+0x270/0x2b0 [ 164.355817][ T7203] __kasan_check_write+0x44/0x54 [ 164.356612][ T7203] gfs2_qd_shrink_scan+0x56c/0x7b0 [ 164.357371][ T7203] do_shrink_slab+0x4c0/0xfb8 [ 164.358117][ T7203] shrink_slab+0x190/0x6fc [ 164.358797][ T7203] drop_slab_node+0xcc/0x170 [ 164.359581][ T7203] drop_slab+0x84/0xf8 [ 164.360205][ T7203] drop_caches_sysctl_handler+0x16c/0x2fc [ 164.361082][ T7203] proc_sys_call_handler+0x3dc/0x63c [ 164.361898][ T7203] proc_sys_write+0x2c/0x3c [ 164.362579][ T7203] do_iter_readv_writev+0x3a0/0x4f8 [ 164.363370][ T7203] do_iter_write+0x1c4/0x670 [ 164.364068][ T7203] do_writev+0x1e0/0x380 [ 164.364680][ T7203] __arm64_sys_writev+0x80/0x94 [ 164.365454][ T7203] invoke_syscall+0x98/0x2b8 [ 164.366132][ T7203] el0_svc_common+0x138/0x258 [ 164.366802][ T7203] do_el0_svc+0x58/0x14c [ 164.367372][ T7203] el0_svc+0x78/0x1e0 [ 164.367954][ T7203] el0t_64_sync_handler+0xcc/0xe4 [ 164.368671][ T7203] el0t_64_sync+0x1a0/0x1a4 [ 164.369303][ T7203] [ 164.369642][ T7203] Allocated by task 7207: [ 164.370240][ T7203] __kasan_kmalloc+0xb0/0xf0 [ 164.370938][ T7203] kmem_cache_alloc_trace+0x274/0x3fc [ 164.371775][ T7203] gfs2_fill_super+0x118/0x19e0 [ 164.372499][ T7203] get_tree_bdev+0x358/0x544 [ 164.373147][ T7203] gfs2_get_tree+0x54/0x1b4 [ 164.373853][ T7203] vfs_get_tree+0x90/0x274 [ 164.374456][ T7203] do_new_mount+0x228/0x810 [ 164.375083][ T7203] path_mount+0x5b4/0x1000 [ 164.375696][ T7203] __arm64_sys_mount+0x514/0x5e4 [ 164.376381][ T7203] invoke_syscall+0x98/0x2b8 [ 164.377043][ T7203] el0_svc_common+0x138/0x258 [ 164.377815][ T7203] do_el0_svc+0x58/0x14c [ 164.378441][ T7203] el0_svc+0x78/0x1e0 [ 164.379033][ T7203] el0t_64_sync_handler+0xcc/0xe4 [ 164.379763][ T7203] el0t_64_sync+0x1a0/0x1a4 [ 164.380442][ T7203] [ 164.380774][ T7203] Freed by task 4809: [ 164.381320][ T7203] kasan_set_track+0x4c/0x84 [ 164.381987][ T7203] kasan_set_free_info+0x28/0x4c [ 164.382731][ T7203] ____kasan_slab_free+0x118/0x164 [ 164.383453][ T7203] __kasan_slab_free+0x18/0x28 [ 164.384131][ T7203] slab_free_freelist_hook+0x128/0x1e8 [ 164.384959][ T7203] kfree+0x170/0x40c [ 164.385530][ T7203] free_sbd+0x5c/0x6c [ 164.386111][ T7203] gfs2_put_super+0x63c/0x6bc [ 164.386735][ T7203] generic_shutdown_super+0x130/0x2f0 [ 164.387489][ T7203] kill_block_super+0x70/0xdc [ 164.388161][ T7203] gfs2_kill_sb+0xc0/0xd4 [ 164.388808][ T7203] deactivate_locked_super+0xb8/0x13c [ 164.389560][ T7203] deactivate_super+0xf8/0x118 [ 164.390241][ T7203] cleanup_mnt+0x3a4/0x458 [ 164.390901][ T7203] __cleanup_mnt+0x20/0x30 [ 164.391508][ T7203] task_work_run+0x12c/0x1e0 [ 164.392179][ T7203] do_notify_resume+0x24b4/0x3128 [ 164.392935][ T7203] el0_svc+0xf0/0x1e0 [ 164.393463][ T7203] el0t_64_sync_handler+0xcc/0xe4 [ 164.394209][ T7203] el0t_64_sync+0x1a0/0x1a4 [ 164.394881][ T7203] [ 164.395225][ T7203] The buggy address belongs to the object at ffff0000d7548000 [ 164.395225][ T7203] which belongs to the cache kmalloc-8k of size 8192 [ 164.397229][ T7203] The buggy address is located 2672 bytes inside of [ 164.397229][ T7203] 8192-byte region [ffff0000d7548000, ffff0000d754a000) [ 164.399187][ T7203] The buggy address belongs to the page: [ 164.399977][ T7203] page:00000000772dabc9 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x117548 [ 164.401511][ T7203] head:00000000772dabc9 order:3 compound_mapcount:0 compound_pincount:0 [ 164.402829][ T7203] flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) [ 164.404099][ T7203] raw: 05ffc00000010200 fffffc0003069a00 0000000300000003 ffff0000c0002c00 [ 164.405346][ T7203] raw: 0000000000000000 0000000080020002 00000001ffffffff 0000000000000000 [ 164.406508][ T7203] page dumped because: kasan: bad access detected [ 164.407433][ T7203] [ 164.407789][ T7203] Memory state around the buggy address: [ 164.408622][ T7203] ffff0000d7548900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 164.409820][ T7203] ffff0000d7548980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 164.410930][ T7203] >ffff0000d7548a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 164.412107][ T7203] ^ [ 164.413167][ T7203] ffff0000d7548a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 164.414336][ T7203] ffff0000d7548b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 164.415498][ T7203] ================================================================== [ 164.416694][ T7203] Disabling lock debugging due to kernel taint [ 164.423164][ T7205] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 164.425084][ T7205] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 164.432032][ T7203] syz.4.706 (7203): drop_caches: 2 [ 164.454650][ T7209] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 164.455993][ T7209] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 164.458547][ T7209] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 164.462980][ T4857] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 164.464236][ T4857] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 164.493590][ T4857] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 29ms [ 164.494791][ T4857] gfs2: fsid=syz:syz.0: jid=0: Done [ 164.495607][ T7209] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 164.500574][ T7209] syz.0.709 (7209): drop_caches: 2 [ 164.513062][ T7211] loop3: detected capacity change from 0 to 32768 [ 164.542702][ T7205] syz.1.708 (7205): drop_caches: 2 [ 164.572687][ T7211] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 164.573949][ T7211] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 164.576148][ T7211] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 164.577680][ T4151] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 164.578692][ T4151] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 164.616545][ T4151] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 37ms [ 164.617730][ T4151] gfs2: fsid=syz:syz.0: jid=0: Done [ 164.618513][ T7211] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 164.623237][ T7211] syz.3.710 (7211): drop_caches: 2 [ 164.681780][ T7213] loop4: detected capacity change from 0 to 32768 [ 164.754506][ T7219] loop1: detected capacity change from 0 to 32768 [ 164.758375][ T7219] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 164.762116][ T7219] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 164.766938][ T7219] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 164.773049][ T7213] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 164.774151][ T7213] CPU: 0 PID: 7213 Comm: syz.4.712 Tainted: G B syzkaller #0 [ 164.775532][ T7213] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 164.777219][ T7213] Call trace: [ 164.777756][ T7213] dump_backtrace+0x0/0x43c [ 164.778476][ T7213] show_stack+0x2c/0x3c [ 164.779115][ T7213] __dump_stack+0x30/0x40 [ 164.779829][ T7213] dump_stack_lvl+0xf8/0x160 [ 164.780508][ T7213] dump_stack+0x1c/0x5c [ 164.781128][ T7213] sysfs_create_dir_ns+0x22c/0x24c [ 164.781900][ T7213] kobject_add_internal+0x590/0xc54 [ 164.782710][ T7213] kobject_init_and_add+0x118/0x17c [ 164.783444][ T7213] gfs2_sys_fs_add+0x1dc/0x3d8 [ 164.784179][ T7213] gfs2_fill_super+0xdac/0x19e0 [ 164.784877][ T7213] get_tree_bdev+0x358/0x544 [ 164.785575][ T7213] gfs2_get_tree+0x54/0x1b4 [ 164.786220][ T7213] vfs_get_tree+0x90/0x274 [ 164.786876][ T7213] do_new_mount+0x228/0x810 [ 164.787538][ T7213] path_mount+0x5b4/0x1000 [ 164.788174][ T7213] __arm64_sys_mount+0x514/0x5e4 [ 164.788870][ T7213] invoke_syscall+0x98/0x2b8 [ 164.789525][ T7213] el0_svc_common+0x138/0x258 [ 164.790178][ T7213] do_el0_svc+0x58/0x14c [ 164.790763][ T7213] el0_svc+0x78/0x1e0 [ 164.791374][ T7213] el0t_64_sync_handler+0xcc/0xe4 [ 164.792108][ T7213] el0t_64_sync+0x1a0/0x1a4 [ 164.798014][ T4857] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 164.798984][ T4857] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 164.820440][ T4857] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 21ms [ 164.821571][ T4857] gfs2: fsid=syz:syz.0: jid=0: Done [ 164.822283][ T7219] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 164.826027][ T7219] syz.1.714 (7219): drop_caches: 2 [ 164.843890][ T7213] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 164.847931][ T7213] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 164.851283][ T7215] loop2: detected capacity change from 0 to 32768 [ 164.852971][ T7213] syz.4.712 (7213): drop_caches: 2 [ 164.853767][ T7217] loop0: detected capacity change from 0 to 32768 [ 164.920735][ T7217] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 164.922054][ T7217] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 164.924693][ T7217] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 164.926375][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 164.927449][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 164.955077][ T7221] loop3: detected capacity change from 0 to 32768 [ 164.956751][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 29ms [ 164.958030][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 164.958759][ T7217] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 164.964237][ T7217] syz.0.713 (7217): drop_caches: 2 [ 164.967174][ T7215] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 164.968267][ T7215] CPU: 1 PID: 7215 Comm: syz.2.711 Tainted: G B syzkaller #0 [ 164.969635][ T7215] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 164.971235][ T7215] Call trace: [ 164.971758][ T7215] dump_backtrace+0x0/0x43c [ 164.972479][ T7215] show_stack+0x2c/0x3c [ 164.973168][ T7215] __dump_stack+0x30/0x40 [ 164.973809][ T7215] dump_stack_lvl+0xf8/0x160 [ 164.974557][ T7215] dump_stack+0x1c/0x5c [ 164.975202][ T7215] sysfs_create_dir_ns+0x22c/0x24c [ 164.975980][ T7215] kobject_add_internal+0x590/0xc54 [ 164.976789][ T7215] kobject_init_and_add+0x118/0x17c [ 164.977604][ T7215] gfs2_sys_fs_add+0x1dc/0x3d8 [ 164.978295][ T7215] gfs2_fill_super+0xdac/0x19e0 [ 164.979143][ T7215] get_tree_bdev+0x358/0x544 [ 164.979860][ T7215] gfs2_get_tree+0x54/0x1b4 [ 164.980567][ T7215] vfs_get_tree+0x90/0x274 [ 164.981263][ T7215] do_new_mount+0x228/0x810 [ 164.981933][ T7215] path_mount+0x5b4/0x1000 [ 164.982644][ T7215] __arm64_sys_mount+0x514/0x5e4 [ 164.983432][ T7215] invoke_syscall+0x98/0x2b8 [ 164.984143][ T7215] el0_svc_common+0x138/0x258 [ 164.984881][ T7215] do_el0_svc+0x58/0x14c [ 164.985509][ T7215] el0_svc+0x78/0x1e0 [ 164.986153][ T7215] el0t_64_sync_handler+0xcc/0xe4 [ 164.986937][ T7215] el0t_64_sync+0x1a0/0x1a4 [ 164.998406][ T7215] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 165.000345][ T7215] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 165.002271][ T7215] syz.2.711 (7215): drop_caches: 2 [ 165.059721][ T7221] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 165.061034][ T7221] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 165.068187][ T7225] loop4: detected capacity change from 0 to 32768 [ 165.069404][ T7221] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 165.071201][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 165.072259][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 165.093409][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 21ms [ 165.094538][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 165.095392][ T7221] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 165.098906][ T7221] syz.3.715 (7221): drop_caches: 2 [ 165.117517][ T7223] loop1: detected capacity change from 0 to 32768 [ 165.122260][ T7225] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 165.123443][ T7225] CPU: 0 PID: 7225 Comm: syz.4.717 Tainted: G B syzkaller #0 [ 165.124611][ T7225] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 165.126082][ T7225] Call trace: [ 165.126572][ T7225] dump_backtrace+0x0/0x43c [ 165.127215][ T7225] show_stack+0x2c/0x3c [ 165.127807][ T7225] __dump_stack+0x30/0x40 [ 165.128430][ T7225] dump_stack_lvl+0xf8/0x160 [ 165.129137][ T7225] dump_stack+0x1c/0x5c [ 165.129761][ T7225] sysfs_create_dir_ns+0x22c/0x24c [ 165.130489][ T7225] kobject_add_internal+0x590/0xc54 [ 165.131213][ T7225] kobject_init_and_add+0x118/0x17c [ 165.132015][ T7225] gfs2_sys_fs_add+0x1dc/0x3d8 [ 165.132747][ T7225] gfs2_fill_super+0xdac/0x19e0 [ 165.133401][ T7225] get_tree_bdev+0x358/0x544 [ 165.134059][ T7225] gfs2_get_tree+0x54/0x1b4 [ 165.134712][ T7225] vfs_get_tree+0x90/0x274 [ 165.135351][ T7225] do_new_mount+0x228/0x810 [ 165.136016][ T7225] path_mount+0x5b4/0x1000 [ 165.136604][ T7225] __arm64_sys_mount+0x514/0x5e4 [ 165.137276][ T7225] invoke_syscall+0x98/0x2b8 [ 165.137927][ T7225] el0_svc_common+0x138/0x258 [ 165.138560][ T7225] do_el0_svc+0x58/0x14c [ 165.139153][ T7225] el0_svc+0x78/0x1e0 [ 165.139733][ T7225] el0t_64_sync_handler+0xcc/0xe4 [ 165.140445][ T7225] el0t_64_sync+0x1a0/0x1a4 [ 165.149312][ T7225] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 165.151389][ T7225] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 165.166900][ T7225] syz.4.717 (7225): drop_caches: 2 [ 165.213070][ T7223] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 165.214361][ T7223] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 165.217866][ T7223] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 165.219890][ T4859] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 165.220924][ T4859] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 165.250543][ T7227] loop2: detected capacity change from 0 to 32768 [ 165.254241][ T4859] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 33ms [ 165.255457][ T4859] gfs2: fsid=syz:syz.0: jid=0: Done [ 165.256332][ T7223] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 165.262705][ T7223] syz.1.716 (7223): drop_caches: 2 [ 165.274784][ T7229] loop0: detected capacity change from 0 to 32768 [ 165.302694][ T7229] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 165.303901][ T7229] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 165.306069][ T7229] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 165.307640][ T4859] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 165.308624][ T4859] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 165.323164][ T7227] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 165.324394][ T7227] CPU: 1 PID: 7227 Comm: syz.2.719 Tainted: G B syzkaller #0 [ 165.325718][ T7227] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 165.327229][ T7227] Call trace: [ 165.327744][ T7227] dump_backtrace+0x0/0x43c [ 165.328403][ T7227] show_stack+0x2c/0x3c [ 165.329022][ T7227] __dump_stack+0x30/0x40 [ 165.329675][ T7227] dump_stack_lvl+0xf8/0x160 [ 165.330382][ T7227] dump_stack+0x1c/0x5c [ 165.330987][ T7227] sysfs_create_dir_ns+0x22c/0x24c [ 165.331758][ T7227] kobject_add_internal+0x590/0xc54 [ 165.332637][ T7227] kobject_init_and_add+0x118/0x17c [ 165.333513][ T7227] gfs2_sys_fs_add+0x1dc/0x3d8 [ 165.334208][ T7227] gfs2_fill_super+0xdac/0x19e0 [ 165.334961][ T7227] get_tree_bdev+0x358/0x544 [ 165.335660][ T7227] gfs2_get_tree+0x54/0x1b4 [ 165.336338][ T7227] vfs_get_tree+0x90/0x274 [ 165.336980][ T7227] do_new_mount+0x228/0x810 [ 165.337624][ T7227] path_mount+0x5b4/0x1000 [ 165.338298][ T7227] __arm64_sys_mount+0x514/0x5e4 [ 165.338898][ T4859] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 30ms [ 165.339000][ T7227] invoke_syscall+0x98/0x2b8 [ 165.340899][ T7227] el0_svc_common+0x138/0x258 [ 165.341563][ T7227] do_el0_svc+0x58/0x14c [ 165.342151][ T4859] gfs2: fsid=syz:syz.0: jid=0: Done [ 165.342195][ T7227] el0_svc+0x78/0x1e0 [ 165.342980][ T7229] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 165.343543][ T7227] el0t_64_sync_handler+0xcc/0xe4 [ 165.345382][ T7227] el0t_64_sync+0x1a0/0x1a4 [ 165.347952][ T7229] syz.0.718 (7229): drop_caches: 2 [ 165.369268][ T7227] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 165.371217][ T7227] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 165.405663][ T7231] syz.3.720 (7231): drop_caches: 2 [ 165.497016][ T7233] loop4: detected capacity change from 0 to 32768 [ 165.508823][ T7233] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 165.510193][ T7233] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 165.514953][ T7227] syz.2.719 (7227): drop_caches: 2 [ 165.520697][ T7233] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 1ms [ 165.524956][ T4856] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 165.525881][ T4856] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 165.552800][ T4856] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 26ms [ 165.554206][ T4856] gfs2: fsid=syz:syz.0: jid=0: Done [ 165.555035][ T7233] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 165.558131][ T7233] syz.4.721 (7233): drop_caches: 2 [ 165.604811][ T7235] loop1: detected capacity change from 0 to 32768 [ 165.606659][ T7235] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 165.607931][ T7235] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 165.626023][ T7235] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 165.633031][ T4856] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 165.634187][ T4856] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 165.649108][ T7237] loop3: detected capacity change from 0 to 32768 [ 165.668195][ T4856] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 34ms [ 165.669437][ T4856] gfs2: fsid=syz:syz.0: jid=0: Done [ 165.670197][ T7235] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 165.673768][ T7235] syz.1.722 (7235): drop_caches: 2 [ 165.711020][ T7237] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 165.712379][ T7237] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 165.720500][ T7237] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 165.722246][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 165.723268][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 165.735229][ T7239] loop0: detected capacity change from 0 to 32768 [ 165.739700][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 16ms [ 165.740906][ T7239] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 165.742135][ T7239] CPU: 1 PID: 7239 Comm: syz.0.723 Tainted: G B syzkaller #0 [ 165.743490][ T7239] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 165.744913][ T7239] Call trace: [ 165.745409][ T7239] dump_backtrace+0x0/0x43c [ 165.746106][ T7239] show_stack+0x2c/0x3c [ 165.746743][ T7239] __dump_stack+0x30/0x40 [ 165.747365][ T7239] dump_stack_lvl+0xf8/0x160 [ 165.748044][ T7239] dump_stack+0x1c/0x5c [ 165.748647][ T7239] sysfs_create_dir_ns+0x22c/0x24c [ 165.749373][ T7239] kobject_add_internal+0x590/0xc54 [ 165.750110][ T7239] kobject_init_and_add+0x118/0x17c [ 165.750852][ T7239] gfs2_sys_fs_add+0x1dc/0x3d8 [ 165.751554][ T7239] gfs2_fill_super+0xdac/0x19e0 [ 165.752243][ T7239] get_tree_bdev+0x358/0x544 [ 165.752886][ T7239] gfs2_get_tree+0x54/0x1b4 [ 165.753518][ T7239] vfs_get_tree+0x90/0x274 [ 165.754190][ T7239] do_new_mount+0x228/0x810 [ 165.754833][ T7239] path_mount+0x5b4/0x1000 [ 165.755504][ T7239] __arm64_sys_mount+0x514/0x5e4 [ 165.756208][ T7239] invoke_syscall+0x98/0x2b8 [ 165.756900][ T7239] el0_svc_common+0x138/0x258 [ 165.757578][ T7239] do_el0_svc+0x58/0x14c [ 165.758187][ T7239] el0_svc+0x78/0x1e0 [ 165.758795][ T7239] el0t_64_sync_handler+0xcc/0xe4 [ 165.759574][ T7239] el0t_64_sync+0x1a0/0x1a4 [ 165.762038][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 165.762863][ T7237] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 165.766697][ T7237] syz.3.724 (7237): drop_caches: 2 [ 165.790806][ T7239] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 165.792852][ T7239] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 165.794658][ T7239] syz.0.723 (7239): drop_caches: 2 [ 165.892064][ T7241] loop2: detected capacity change from 0 to 32768 [ 165.913944][ T7243] loop4: detected capacity change from 0 to 32768 [ 165.933333][ T7241] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 165.934526][ T7241] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 165.942634][ T7241] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 165.944478][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 165.945551][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 165.952260][ T7243] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 165.953391][ T7243] CPU: 0 PID: 7243 Comm: syz.4.726 Tainted: G B syzkaller #0 [ 165.954649][ T7243] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 165.956172][ T7243] Call trace: [ 165.956696][ T7243] dump_backtrace+0x0/0x43c [ 165.957383][ T7243] show_stack+0x2c/0x3c [ 165.957991][ T7243] __dump_stack+0x30/0x40 [ 165.958641][ T7243] dump_stack_lvl+0xf8/0x160 [ 165.959321][ T7243] dump_stack+0x1c/0x5c [ 165.959940][ T7243] sysfs_create_dir_ns+0x22c/0x24c [ 165.960643][ T7243] kobject_add_internal+0x590/0xc54 [ 165.961419][ T7243] kobject_init_and_add+0x118/0x17c [ 165.962176][ T7243] gfs2_sys_fs_add+0x1dc/0x3d8 [ 165.962934][ T7243] gfs2_fill_super+0xdac/0x19e0 [ 165.963604][ T7243] get_tree_bdev+0x358/0x544 [ 165.964269][ T7243] gfs2_get_tree+0x54/0x1b4 [ 165.964933][ T7243] vfs_get_tree+0x90/0x274 [ 165.965549][ T7243] do_new_mount+0x228/0x810 [ 165.966172][ T7243] path_mount+0x5b4/0x1000 [ 165.966791][ T7243] __arm64_sys_mount+0x514/0x5e4 [ 165.967492][ T7243] invoke_syscall+0x98/0x2b8 [ 165.968131][ T7243] el0_svc_common+0x138/0x258 [ 165.968796][ T7243] do_el0_svc+0x58/0x14c [ 165.969420][ T7243] el0_svc+0x78/0x1e0 [ 165.969999][ T7243] el0t_64_sync_handler+0xcc/0xe4 [ 165.970713][ T7243] el0t_64_sync+0x1a0/0x1a4 [ 165.981151][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 35ms [ 165.982397][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 165.983202][ T7241] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 165.990655][ T7241] syz.2.725 (7241): drop_caches: 2 [ 166.011131][ T7243] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 166.013812][ T7245] loop1: detected capacity change from 0 to 32768 [ 166.017119][ T7243] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 166.060544][ T7245] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 166.061847][ T7245] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 166.064150][ T7245] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 166.065693][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 166.066759][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 166.070079][ T7247] loop0: detected capacity change from 0 to 32768 [ 166.081303][ T7243] syz.4.726 (7243): drop_caches: 2 [ 166.088930][ T7249] loop3: detected capacity change from 0 to 32768 [ 166.100088][ T7247] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 166.101175][ T7247] CPU: 0 PID: 7247 Comm: syz.0.729 Tainted: G B syzkaller #0 [ 166.102479][ T7247] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 166.103923][ T7247] Call trace: [ 166.104144][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 37ms [ 166.104393][ T7247] dump_backtrace+0x0/0x43c [ 166.105645][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 166.106187][ T7247] show_stack+0x2c/0x3c [ 166.106968][ T7245] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 166.107505][ T7247] __dump_stack+0x30/0x40 [ 166.109186][ T7247] dump_stack_lvl+0xf8/0x160 [ 166.109909][ T7247] dump_stack+0x1c/0x5c [ 166.110479][ T7247] sysfs_create_dir_ns+0x22c/0x24c [ 166.111229][ T7247] kobject_add_internal+0x590/0xc54 [ 166.111978][ T7247] kobject_init_and_add+0x118/0x17c [ 166.112738][ T7247] gfs2_sys_fs_add+0x1dc/0x3d8 [ 166.113411][ T7247] gfs2_fill_super+0xdac/0x19e0 [ 166.114090][ T7247] get_tree_bdev+0x358/0x544 [ 166.114702][ T7247] gfs2_get_tree+0x54/0x1b4 [ 166.115316][ T7247] vfs_get_tree+0x90/0x274 [ 166.115952][ T7247] do_new_mount+0x228/0x810 [ 166.116657][ T7247] path_mount+0x5b4/0x1000 [ 166.117344][ T7247] __arm64_sys_mount+0x514/0x5e4 [ 166.118110][ T7247] invoke_syscall+0x98/0x2b8 [ 166.118829][ T7247] el0_svc_common+0x138/0x258 [ 166.119601][ T7247] do_el0_svc+0x58/0x14c [ 166.120250][ T7247] el0_svc+0x78/0x1e0 [ 166.120858][ T7247] el0t_64_sync_handler+0xcc/0xe4 [ 166.121632][ T7247] el0t_64_sync+0x1a0/0x1a4 [ 166.125255][ T7245] syz.1.727 (7245): drop_caches: 2 [ 166.131061][ T7247] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 166.133456][ T7247] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 166.150201][ T7249] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 166.151452][ T7249] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 166.152872][ T7247] syz.0.729 (7247): drop_caches: 2 [ 166.153761][ T7249] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 166.160913][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 166.161943][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 166.193866][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 31ms [ 166.195002][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 166.195801][ T7249] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 166.199521][ T7249] syz.3.728 (7249): drop_caches: 2 [ 166.368756][ T7251] loop2: detected capacity change from 0 to 32768 [ 166.414922][ T7253] loop4: detected capacity change from 0 to 32768 [ 166.420203][ T7251] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 166.421405][ T7251] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 166.423546][ T7251] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 166.425335][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 166.426315][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 166.447851][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 21ms [ 166.448975][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 166.453200][ T7251] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 166.457033][ T7251] syz.2.730 (7251): drop_caches: 2 [ 166.478820][ T7255] loop1: detected capacity change from 0 to 32768 [ 166.487795][ T7259] loop3: detected capacity change from 0 to 32768 [ 166.494420][ T7253] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 166.495594][ T7253] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 166.498146][ T7253] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 166.501726][ T4859] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 166.502717][ T4859] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 166.520149][ T4859] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 17ms [ 166.521241][ T4859] gfs2: fsid=syz:syz.0: jid=0: Done [ 166.521994][ T7253] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 166.525432][ T7253] syz.4.731 (7253): drop_caches: 2 [ 166.541324][ T7259] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 166.542568][ T7259] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 166.543979][ T7255] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 166.545072][ T7255] CPU: 0 PID: 7255 Comm: syz.1.732 Tainted: G B syzkaller #0 [ 166.546344][ T7255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 166.547632][ T7255] Call trace: [ 166.548097][ T7255] dump_backtrace+0x0/0x43c [ 166.548730][ T7255] show_stack+0x2c/0x3c [ 166.549307][ T7255] __dump_stack+0x30/0x40 [ 166.549895][ T7255] dump_stack_lvl+0xf8/0x160 [ 166.550581][ T7255] dump_stack+0x1c/0x5c [ 166.551198][ T7255] sysfs_create_dir_ns+0x22c/0x24c [ 166.551959][ T7255] kobject_add_internal+0x590/0xc54 [ 166.552717][ T7255] kobject_init_and_add+0x118/0x17c [ 166.553480][ T7255] gfs2_sys_fs_add+0x1dc/0x3d8 [ 166.554192][ T7255] gfs2_fill_super+0xdac/0x19e0 [ 166.554846][ T7255] get_tree_bdev+0x358/0x544 [ 166.555455][ T7255] gfs2_get_tree+0x54/0x1b4 [ 166.556071][ T7255] vfs_get_tree+0x90/0x274 [ 166.556684][ T7255] do_new_mount+0x228/0x810 [ 166.557270][ T7255] path_mount+0x5b4/0x1000 [ 166.557872][ T7255] __arm64_sys_mount+0x514/0x5e4 [ 166.558563][ T7255] invoke_syscall+0x98/0x2b8 [ 166.559163][ T7255] el0_svc_common+0x138/0x258 [ 166.559799][ T7255] do_el0_svc+0x58/0x14c [ 166.560371][ T7255] el0_svc+0x78/0x1e0 [ 166.560891][ T7255] el0t_64_sync_handler+0xcc/0xe4 [ 166.561193][ T7257] syz.0.733 (7257): drop_caches: 2 [ 166.561613][ T7255] el0t_64_sync+0x1a0/0x1a4 [ 166.567511][ T7259] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 166.590243][ T4859] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 166.591324][ T4859] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 166.631725][ T4859] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 40ms [ 166.632995][ T4859] gfs2: fsid=syz:syz.0: jid=0: Done [ 166.633857][ T7259] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 166.637346][ T7259] syz.3.734 (7259): drop_caches: 2 [ 166.639741][ T7255] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 166.641588][ T7255] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 166.647697][ T7255] syz.1.732 (7255): drop_caches: 2 [ 166.766551][ T7263] loop0: detected capacity change from 0 to 32768 [ 166.800092][ T7263] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 166.801466][ T7263] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 166.803702][ T7263] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 166.805305][ T4151] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 166.806367][ T4151] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 166.824224][ T7261] loop2: detected capacity change from 0 to 32768 [ 166.844715][ T4151] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 38ms [ 166.845974][ T4151] gfs2: fsid=syz:syz.0: jid=0: Done [ 166.846759][ T7263] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 166.852175][ T7263] syz.0.737 (7263): drop_caches: 2 [ 166.881785][ T7265] loop4: detected capacity change from 0 to 32768 [ 166.904690][ T7261] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 166.905923][ T7261] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 166.911611][ T7261] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 166.913266][ T4856] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 166.914288][ T4856] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 166.931655][ T7265] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 166.932777][ T7265] CPU: 0 PID: 7265 Comm: syz.4.736 Tainted: G B syzkaller #0 [ 166.932963][ T7269] loop1: detected capacity change from 0 to 32768 [ 166.934115][ T7265] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 166.936602][ T7265] Call trace: [ 166.937062][ T7265] dump_backtrace+0x0/0x43c [ 166.937737][ T7265] show_stack+0x2c/0x3c [ 166.938413][ T7265] __dump_stack+0x30/0x40 [ 166.939052][ T7265] dump_stack_lvl+0xf8/0x160 [ 166.939751][ T7265] dump_stack+0x1c/0x5c [ 166.940470][ T7265] sysfs_create_dir_ns+0x22c/0x24c [ 166.941329][ T7265] kobject_add_internal+0x590/0xc54 [ 166.942167][ T7265] kobject_init_and_add+0x118/0x17c [ 166.942769][ T7267] loop3: detected capacity change from 0 to 32768 [ 166.942918][ T7265] gfs2_sys_fs_add+0x1dc/0x3d8 [ 166.944511][ T7265] gfs2_fill_super+0xdac/0x19e0 [ 166.945176][ T7265] get_tree_bdev+0x358/0x544 [ 166.945860][ T7265] gfs2_get_tree+0x54/0x1b4 [ 166.946506][ T7265] vfs_get_tree+0x90/0x274 [ 166.947164][ T7265] do_new_mount+0x228/0x810 [ 166.947804][ T7265] path_mount+0x5b4/0x1000 [ 166.948413][ T7265] __arm64_sys_mount+0x514/0x5e4 [ 166.949046][ T7265] invoke_syscall+0x98/0x2b8 [ 166.949725][ T7265] el0_svc_common+0x138/0x258 [ 166.950384][ T7265] do_el0_svc+0x58/0x14c [ 166.950992][ T7265] el0_svc+0x78/0x1e0 [ 166.951543][ T7265] el0t_64_sync_handler+0xcc/0xe4 [ 166.952254][ T7265] el0t_64_sync+0x1a0/0x1a4 [ 166.963795][ T4856] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 49ms [ 166.965023][ T4856] gfs2: fsid=syz:syz.0: jid=0: Done [ 166.965848][ T7261] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 166.972397][ T7261] syz.2.735 (7261): drop_caches: 2 [ 166.980674][ T7267] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 166.982033][ T7267] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 166.983276][ T7269] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 166.984358][ T7269] CPU: 1 PID: 7269 Comm: syz.1.739 Tainted: G B syzkaller #0 [ 166.985639][ T7269] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 166.987118][ T7269] Call trace: [ 166.987609][ T7269] dump_backtrace+0x0/0x43c [ 166.988291][ T7269] show_stack+0x2c/0x3c [ 166.988922][ T7269] __dump_stack+0x30/0x40 [ 166.989577][ T7269] dump_stack_lvl+0xf8/0x160 [ 166.990323][ T7269] dump_stack+0x1c/0x5c [ 166.990950][ T7269] sysfs_create_dir_ns+0x22c/0x24c [ 166.991753][ T7269] kobject_add_internal+0x590/0xc54 [ 166.992502][ T7269] kobject_init_and_add+0x118/0x17c [ 166.993144][ T7265] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 166.993215][ T7269] gfs2_sys_fs_add+0x1dc/0x3d8 [ 166.995457][ T7265] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 166.995858][ T7269] gfs2_fill_super+0xdac/0x19e0 [ 166.997562][ T7269] get_tree_bdev+0x358/0x544 [ 166.998192][ T7269] gfs2_get_tree+0x54/0x1b4 [ 166.998825][ T7269] vfs_get_tree+0x90/0x274 [ 166.999466][ T7269] do_new_mount+0x228/0x810 [ 167.000133][ T7269] path_mount+0x5b4/0x1000 [ 167.000772][ T7269] __arm64_sys_mount+0x514/0x5e4 [ 167.001476][ T7269] invoke_syscall+0x98/0x2b8 [ 167.002111][ T7269] el0_svc_common+0x138/0x258 [ 167.002788][ T7269] do_el0_svc+0x58/0x14c [ 167.003393][ T7269] el0_svc+0x78/0x1e0 [ 167.004022][ T7269] el0t_64_sync_handler+0xcc/0xe4 [ 167.004763][ T7269] el0t_64_sync+0x1a0/0x1a4 [ 167.006410][ T7265] syz.4.736 (7265): drop_caches: 2 [ 167.013657][ T7267] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 167.020137][ T4151] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 167.021154][ T4151] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 167.040358][ T4151] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 19ms [ 167.042120][ T4151] gfs2: fsid=syz:syz.0: jid=0: Done [ 167.042915][ T7267] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 167.046699][ T7267] syz.3.738 (7267): drop_caches: 2 [ 167.099273][ T7269] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 167.101280][ T7269] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 167.109929][ T7269] syz.1.739 (7269): drop_caches: 2 [ 167.251886][ T7271] loop0: detected capacity change from 0 to 32768 [ 167.278169][ T7273] loop2: detected capacity change from 0 to 32768 [ 167.313146][ T7275] loop4: detected capacity change from 0 to 32768 [ 167.315562][ T7271] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 167.316780][ T7271] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 167.319409][ T7271] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 167.320265][ T7273] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 167.320869][ T4151] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 167.321521][ T7273] CPU: 0 PID: 7273 Comm: syz.2.741 Tainted: G B syzkaller #0 [ 167.322594][ T4151] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 167.323770][ T7273] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 167.326189][ T7273] Call trace: [ 167.326644][ T7273] dump_backtrace+0x0/0x43c [ 167.327312][ T7273] show_stack+0x2c/0x3c [ 167.327886][ T7273] __dump_stack+0x30/0x40 [ 167.328517][ T7273] dump_stack_lvl+0xf8/0x160 [ 167.329166][ T7273] dump_stack+0x1c/0x5c [ 167.329766][ T7273] sysfs_create_dir_ns+0x22c/0x24c [ 167.330447][ T7273] kobject_add_internal+0x590/0xc54 [ 167.331215][ T7273] kobject_init_and_add+0x118/0x17c [ 167.331956][ T7273] gfs2_sys_fs_add+0x1dc/0x3d8 [ 167.332665][ T7273] gfs2_fill_super+0xdac/0x19e0 [ 167.333356][ T7273] get_tree_bdev+0x358/0x544 [ 167.333957][ T7273] gfs2_get_tree+0x54/0x1b4 [ 167.334633][ T7273] vfs_get_tree+0x90/0x274 [ 167.335227][ T7273] do_new_mount+0x228/0x810 [ 167.335830][ T7273] path_mount+0x5b4/0x1000 [ 167.336515][ T7273] __arm64_sys_mount+0x514/0x5e4 [ 167.337197][ T7273] invoke_syscall+0x98/0x2b8 [ 167.337863][ T7273] el0_svc_common+0x138/0x258 [ 167.338542][ T7273] do_el0_svc+0x58/0x14c [ 167.339202][ T7273] el0_svc+0x78/0x1e0 [ 167.339794][ T7273] el0t_64_sync_handler+0xcc/0xe4 [ 167.340491][ T7273] el0t_64_sync+0x1a0/0x1a4 [ 167.347653][ T4151] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 25ms [ 167.348937][ T4151] gfs2: fsid=syz:syz.0: jid=0: Done [ 167.350170][ T7277] loop3: detected capacity change from 0 to 32768 [ 167.351835][ T7271] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 167.355040][ T7277] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 167.356993][ T7271] syz.0.740 (7271): drop_caches: 2 [ 167.358394][ T7277] CPU: 1 PID: 7277 Comm: syz.3.743 Tainted: G B syzkaller #0 [ 167.359669][ T7277] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 167.361256][ T7277] Call trace: [ 167.361770][ T7277] dump_backtrace+0x0/0x43c [ 167.362425][ T7277] show_stack+0x2c/0x3c [ 167.363029][ T7277] __dump_stack+0x30/0x40 [ 167.363655][ T7277] dump_stack_lvl+0xf8/0x160 [ 167.364325][ T7277] dump_stack+0x1c/0x5c [ 167.364938][ T7277] sysfs_create_dir_ns+0x22c/0x24c [ 167.365690][ T7277] kobject_add_internal+0x590/0xc54 [ 167.366450][ T7277] kobject_init_and_add+0x118/0x17c [ 167.367139][ T7277] gfs2_sys_fs_add+0x1dc/0x3d8 [ 167.367845][ T7277] gfs2_fill_super+0xdac/0x19e0 [ 167.368590][ T7277] get_tree_bdev+0x358/0x544 [ 167.369332][ T7277] gfs2_get_tree+0x54/0x1b4 [ 167.369950][ T7277] vfs_get_tree+0x90/0x274 [ 167.370534][ T7277] do_new_mount+0x228/0x810 [ 167.371193][ T7277] path_mount+0x5b4/0x1000 [ 167.371822][ T7277] __arm64_sys_mount+0x514/0x5e4 [ 167.372531][ T7277] invoke_syscall+0x98/0x2b8 [ 167.373168][ T7277] el0_svc_common+0x138/0x258 [ 167.373875][ T7277] do_el0_svc+0x58/0x14c [ 167.374480][ T7277] el0_svc+0x78/0x1e0 [ 167.375074][ T7277] el0t_64_sync_handler+0xcc/0xe4 [ 167.375801][ T7277] el0t_64_sync+0x1a0/0x1a4 [ 167.377659][ T7277] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 167.378695][ T7273] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 167.381273][ T7277] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 167.383462][ T7277] syz.3.743 (7277): drop_caches: 2 [ 167.384298][ T7275] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 167.385428][ T7275] CPU: 1 PID: 7275 Comm: syz.4.742 Tainted: G B syzkaller #0 [ 167.386678][ T7275] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 167.388209][ T7275] Call trace: [ 167.388717][ T7275] dump_backtrace+0x0/0x43c [ 167.388811][ T7273] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 167.389426][ T7275] show_stack+0x2c/0x3c [ 167.389442][ T7275] __dump_stack+0x30/0x40 [ 167.389458][ T7275] dump_stack_lvl+0xf8/0x160 [ 167.389465][ T7275] dump_stack+0x1c/0x5c [ 167.389470][ T7275] sysfs_create_dir_ns+0x22c/0x24c [ 167.389477][ T7275] kobject_add_internal+0x590/0xc54 [ 167.389487][ T7275] kobject_init_and_add+0x118/0x17c [ 167.395436][ T7275] gfs2_sys_fs_add+0x1dc/0x3d8 [ 167.396191][ T7275] gfs2_fill_super+0xdac/0x19e0 [ 167.396926][ T7275] get_tree_bdev+0x358/0x544 [ 167.397600][ T7275] gfs2_get_tree+0x54/0x1b4 [ 167.398302][ T7275] vfs_get_tree+0x90/0x274 [ 167.399032][ T7275] do_new_mount+0x228/0x810 [ 167.399715][ T7275] path_mount+0x5b4/0x1000 [ 167.400372][ T7275] __arm64_sys_mount+0x514/0x5e4 [ 167.401123][ T7275] invoke_syscall+0x98/0x2b8 [ 167.401858][ T7275] el0_svc_common+0x138/0x258 [ 167.402530][ T7275] do_el0_svc+0x58/0x14c [ 167.403114][ T7275] el0_svc+0x78/0x1e0 [ 167.403740][ T7275] el0t_64_sync_handler+0xcc/0xe4 [ 167.404598][ T7275] el0t_64_sync+0x1a0/0x1a4 [ 167.410118][ T7273] syz.2.741 (7273): drop_caches: 2 [ 167.417865][ T7275] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 167.423946][ T7275] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 167.427916][ T7275] syz.4.742 (7275): drop_caches: 2 [ 167.464189][ T7279] loop1: detected capacity change from 0 to 32768 [ 167.502675][ T7279] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 167.503911][ T7279] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 167.506008][ T7279] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 167.507594][ T4859] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 167.508669][ T4859] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 167.544355][ T4859] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 35ms [ 167.545618][ T4859] gfs2: fsid=syz:syz.0: jid=0: Done [ 167.549936][ T7279] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 167.553865][ T7279] syz.1.744 (7279): drop_caches: 2 [ 167.687995][ T7287] syz.4.748 (7287): drop_caches: 2 [ 167.729909][ T7283] loop3: detected capacity change from 0 to 32768 [ 167.742387][ T7281] loop0: detected capacity change from 0 to 32768 [ 167.744113][ T7285] loop2: detected capacity change from 0 to 32768 [ 167.747670][ T7281] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 167.748962][ T7281] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 167.755277][ T7281] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 167.756935][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 167.757894][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 167.769968][ T7283] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 167.771051][ T7283] CPU: 1 PID: 7283 Comm: syz.3.746 Tainted: G B syzkaller #0 [ 167.772296][ T7283] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 167.773819][ T7283] Call trace: [ 167.774314][ T7283] dump_backtrace+0x0/0x43c [ 167.775047][ T7283] show_stack+0x2c/0x3c [ 167.775701][ T7283] __dump_stack+0x30/0x40 [ 167.776371][ T7283] dump_stack_lvl+0xf8/0x160 [ 167.777084][ T7283] dump_stack+0x1c/0x5c [ 167.777712][ T7283] sysfs_create_dir_ns+0x22c/0x24c [ 167.778534][ T7283] kobject_add_internal+0x590/0xc54 [ 167.779334][ T7283] kobject_init_and_add+0x118/0x17c [ 167.780107][ T7283] gfs2_sys_fs_add+0x1dc/0x3d8 [ 167.780808][ T7283] gfs2_fill_super+0xdac/0x19e0 [ 167.781559][ T7283] get_tree_bdev+0x358/0x544 [ 167.782277][ T7283] gfs2_get_tree+0x54/0x1b4 [ 167.782943][ T7283] vfs_get_tree+0x90/0x274 [ 167.783632][ T7283] do_new_mount+0x228/0x810 [ 167.784350][ T7283] path_mount+0x5b4/0x1000 [ 167.784968][ T7283] __arm64_sys_mount+0x514/0x5e4 [ 167.785709][ T7283] invoke_syscall+0x98/0x2b8 [ 167.786394][ T7283] el0_svc_common+0x138/0x258 [ 167.787061][ T7283] do_el0_svc+0x58/0x14c [ 167.787655][ T7283] el0_svc+0x78/0x1e0 [ 167.788284][ T7283] el0t_64_sync_handler+0xcc/0xe4 [ 167.789023][ T7283] el0t_64_sync+0x1a0/0x1a4 [ 167.794211][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 36ms [ 167.795467][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 167.796243][ T7281] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 167.801573][ T7285] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 167.802559][ T7285] CPU: 1 PID: 7285 Comm: syz.2.747 Tainted: G B syzkaller #0 [ 167.803828][ T7285] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 167.805252][ T7285] Call trace: [ 167.805731][ T7285] dump_backtrace+0x0/0x43c [ 167.806350][ T7285] show_stack+0x2c/0x3c [ 167.806922][ T7285] __dump_stack+0x30/0x40 [ 167.807534][ T7285] dump_stack_lvl+0xf8/0x160 [ 167.808132][ T7285] dump_stack+0x1c/0x5c [ 167.808720][ T7285] sysfs_create_dir_ns+0x22c/0x24c [ 167.809461][ T7285] kobject_add_internal+0x590/0xc54 [ 167.810212][ T7285] kobject_init_and_add+0x118/0x17c [ 167.810963][ T7285] gfs2_sys_fs_add+0x1dc/0x3d8 [ 167.811629][ T7285] gfs2_fill_super+0xdac/0x19e0 [ 167.812304][ T7285] get_tree_bdev+0x358/0x544 [ 167.812928][ T7285] gfs2_get_tree+0x54/0x1b4 [ 167.813520][ T7285] vfs_get_tree+0x90/0x274 [ 167.814121][ T7285] do_new_mount+0x228/0x810 [ 167.814713][ T7285] path_mount+0x5b4/0x1000 [ 167.815347][ T7285] __arm64_sys_mount+0x514/0x5e4 [ 167.816009][ T7285] invoke_syscall+0x98/0x2b8 [ 167.816682][ T7285] el0_svc_common+0x138/0x258 [ 167.817365][ T7285] do_el0_svc+0x58/0x14c [ 167.817968][ T7285] el0_svc+0x78/0x1e0 [ 167.818528][ T7285] el0t_64_sync_handler+0xcc/0xe4 [ 167.819240][ T7285] el0t_64_sync+0x1a0/0x1a4 [ 167.821939][ T7281] syz.0.745 (7281): drop_caches: 2 [ 167.823067][ T7283] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 167.827007][ T7283] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 167.833229][ T7285] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 167.835031][ T7285] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 167.888938][ T7289] loop1: detected capacity change from 0 to 32768 [ 167.932723][ T7289] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 167.933939][ T7289] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 167.936149][ T7289] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 167.937815][ T4159] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 167.938824][ T4159] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 167.970812][ T4159] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 31ms [ 167.972044][ T4159] gfs2: fsid=syz:syz.0: jid=0: Done [ 167.972868][ T7289] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 167.973864][ T7285] syz.2.747 (7285): drop_caches: 2 [ 167.981099][ T7289] syz.1.749 (7289): drop_caches: 2 [ 167.982064][ T7283] syz.3.746 (7283): drop_caches: 2 [ 168.036248][ T7291] loop4: detected capacity change from 0 to 32768 [ 168.053702][ T7293] loop0: detected capacity change from 0 to 32768 [ 168.061978][ T7291] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 168.063134][ T7291] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 168.065344][ T7291] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 168.066933][ T4856] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 168.067979][ T4856] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 168.089831][ T7293] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 168.090914][ T7293] CPU: 0 PID: 7293 Comm: syz.0.751 Tainted: G B syzkaller #0 [ 168.092224][ T7293] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 168.093653][ T7293] Call trace: [ 168.094091][ T7293] dump_backtrace+0x0/0x43c [ 168.094722][ T7293] show_stack+0x2c/0x3c [ 168.095283][ T7293] __dump_stack+0x30/0x40 [ 168.095915][ T7293] dump_stack_lvl+0xf8/0x160 [ 168.096543][ T7293] dump_stack+0x1c/0x5c [ 168.097147][ T7293] sysfs_create_dir_ns+0x22c/0x24c [ 168.097911][ T7293] kobject_add_internal+0x590/0xc54 [ 168.098632][ T7293] kobject_init_and_add+0x118/0x17c [ 168.099389][ T7293] gfs2_sys_fs_add+0x1dc/0x3d8 [ 168.100050][ T7293] gfs2_fill_super+0xdac/0x19e0 [ 168.100724][ T7293] get_tree_bdev+0x358/0x544 [ 168.101385][ T7293] gfs2_get_tree+0x54/0x1b4 [ 168.102053][ T7293] vfs_get_tree+0x90/0x274 [ 168.102650][ T7293] do_new_mount+0x228/0x810 [ 168.103260][ T7293] path_mount+0x5b4/0x1000 [ 168.103940][ T7293] __arm64_sys_mount+0x514/0x5e4 [ 168.104654][ T7293] invoke_syscall+0x98/0x2b8 [ 168.105334][ T7293] el0_svc_common+0x138/0x258 [ 168.106027][ T7293] do_el0_svc+0x58/0x14c [ 168.106681][ T7293] el0_svc+0x78/0x1e0 [ 168.107212][ T7293] el0t_64_sync_handler+0xcc/0xe4 [ 168.107963][ T7293] el0t_64_sync+0x1a0/0x1a4 [ 168.111680][ T4856] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 43ms [ 168.112737][ T4856] gfs2: fsid=syz:syz.0: jid=0: Done [ 168.113534][ T7291] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 168.116789][ T7291] syz.4.750 (7291): drop_caches: 2 1970/01/01 00:02:48 executed programs: 749 [ 168.160918][ T7293] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 168.166052][ T7293] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 168.283186][ T7297] loop2: detected capacity change from 0 to 32768 [ 168.288550][ T7293] syz.0.751 (7293): drop_caches: 2 [ 168.290458][ T7299] loop1: detected capacity change from 0 to 32768 [ 168.293539][ T7299] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 168.294880][ T7299] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 168.297061][ T7299] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 168.298551][ T4858] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 168.299684][ T4858] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 168.320306][ T7297] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 168.321417][ T7297] CPU: 0 PID: 7297 Comm: syz.2.752 Tainted: G B syzkaller #0 [ 168.322765][ T7297] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 168.324104][ T7297] Call trace: [ 168.324636][ T7297] dump_backtrace+0x0/0x43c [ 168.325304][ T7297] show_stack+0x2c/0x3c [ 168.325951][ T7297] __dump_stack+0x30/0x40 [ 168.326620][ T7297] dump_stack_lvl+0xf8/0x160 [ 168.327317][ T7297] dump_stack+0x1c/0x5c [ 168.327961][ T7297] sysfs_create_dir_ns+0x22c/0x24c [ 168.328696][ T7297] kobject_add_internal+0x590/0xc54 [ 168.329477][ T7297] kobject_init_and_add+0x118/0x17c [ 168.330255][ T7297] gfs2_sys_fs_add+0x1dc/0x3d8 [ 168.330990][ T7297] gfs2_fill_super+0xdac/0x19e0 [ 168.331686][ T7297] get_tree_bdev+0x358/0x544 [ 168.332355][ T7297] gfs2_get_tree+0x54/0x1b4 [ 168.333019][ T7297] vfs_get_tree+0x90/0x274 [ 168.333643][ T7297] do_new_mount+0x228/0x810 [ 168.334227][ T7297] path_mount+0x5b4/0x1000 [ 168.334860][ T7297] __arm64_sys_mount+0x514/0x5e4 [ 168.335568][ T7297] invoke_syscall+0x98/0x2b8 [ 168.336263][ T7297] el0_svc_common+0x138/0x258 [ 168.336945][ T7297] do_el0_svc+0x58/0x14c [ 168.337551][ T7297] el0_svc+0x78/0x1e0 [ 168.338091][ T7297] el0t_64_sync_handler+0xcc/0xe4 [ 168.338758][ T7297] el0t_64_sync+0x1a0/0x1a4 [ 168.342747][ T4858] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 43ms [ 168.343944][ T4858] gfs2: fsid=syz:syz.0: jid=0: Done [ 168.344205][ T7296] loop3: detected capacity change from 0 to 32768 [ 168.344770][ T7299] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 168.348588][ T7299] syz.1.753 (7299): drop_caches: 2 [ 168.385056][ T7297] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 168.387022][ T7297] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 168.401743][ T7297] syz.2.752 (7297): drop_caches: 2 [ 168.402462][ T7296] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 168.403798][ T7296] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 168.406084][ T7296] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 168.420348][ T4858] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 168.421320][ T4858] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 168.441093][ T4858] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 19ms [ 168.442286][ T4858] gfs2: fsid=syz:syz.0: jid=0: Done [ 168.443823][ T7296] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 168.446821][ T7296] syz.3.754 (7296): drop_caches: 2 [ 168.533868][ T7301] loop4: detected capacity change from 0 to 32768 [ 168.557261][ T7305] syz.1.757 (7305): drop_caches: 2 [ 168.638334][ T7301] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 168.639576][ T7301] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 168.641982][ T7301] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 168.647762][ T4859] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 168.648798][ T4859] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 168.669329][ T7303] loop0: detected capacity change from 0 to 32768 [ 168.670753][ T4859] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 21ms [ 168.674094][ T4859] gfs2: fsid=syz:syz.0: jid=0: Done [ 168.674914][ T7301] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 168.678754][ T7301] syz.4.755 (7301): drop_caches: 2 [ 168.711529][ T7307] loop2: detected capacity change from 0 to 32768 [ 168.718856][ T7309] loop3: detected capacity change from 0 to 32768 [ 168.733905][ T7303] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 168.735203][ T7303] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 168.737703][ T7303] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 168.740720][ T7307] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 168.741869][ T7307] CPU: 0 PID: 7307 Comm: syz.2.758 Tainted: G B syzkaller #0 [ 168.743159][ T7307] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 168.744724][ T7307] Call trace: [ 168.745182][ T7307] dump_backtrace+0x0/0x43c [ 168.745828][ T7307] show_stack+0x2c/0x3c [ 168.746401][ T7307] __dump_stack+0x30/0x40 [ 168.747041][ T7307] dump_stack_lvl+0xf8/0x160 [ 168.747708][ T7307] dump_stack+0x1c/0x5c [ 168.748304][ T7307] sysfs_create_dir_ns+0x22c/0x24c [ 168.748988][ T7307] kobject_add_internal+0x590/0xc54 [ 168.749809][ T7307] kobject_init_and_add+0x118/0x17c [ 168.750587][ T7307] gfs2_sys_fs_add+0x1dc/0x3d8 [ 168.751308][ T7307] gfs2_fill_super+0xdac/0x19e0 [ 168.752040][ T7307] get_tree_bdev+0x358/0x544 [ 168.752729][ T7307] gfs2_get_tree+0x54/0x1b4 [ 168.753395][ T7307] vfs_get_tree+0x90/0x274 [ 168.754049][ T7307] do_new_mount+0x228/0x810 [ 168.754726][ T7307] path_mount+0x5b4/0x1000 [ 168.755361][ T7307] __arm64_sys_mount+0x514/0x5e4 [ 168.756052][ T7307] invoke_syscall+0x98/0x2b8 [ 168.756728][ T7307] el0_svc_common+0x138/0x258 [ 168.757372][ T7307] do_el0_svc+0x58/0x14c [ 168.757925][ T7307] el0_svc+0x78/0x1e0 [ 168.758440][ T7307] el0t_64_sync_handler+0xcc/0xe4 [ 168.759143][ T7307] el0t_64_sync+0x1a0/0x1a4 [ 168.762335][ T4856] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 168.763265][ T4856] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 168.779856][ T7309] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 168.781074][ T7309] CPU: 0 PID: 7309 Comm: syz.3.759 Tainted: G B syzkaller #0 [ 168.782387][ T7309] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 168.783952][ T7309] Call trace: [ 168.784446][ T7309] dump_backtrace+0x0/0x43c [ 168.785113][ T7309] show_stack+0x2c/0x3c [ 168.785674][ T7309] __dump_stack+0x30/0x40 [ 168.786269][ T7309] dump_stack_lvl+0xf8/0x160 [ 168.786873][ T7309] dump_stack+0x1c/0x5c [ 168.787473][ T7309] sysfs_create_dir_ns+0x22c/0x24c [ 168.788220][ T7309] kobject_add_internal+0x590/0xc54 [ 168.788904][ T7309] kobject_init_and_add+0x118/0x17c [ 168.789631][ T7309] gfs2_sys_fs_add+0x1dc/0x3d8 [ 168.790359][ T7309] gfs2_fill_super+0xdac/0x19e0 [ 168.791049][ T7309] get_tree_bdev+0x358/0x544 [ 168.791725][ T7309] gfs2_get_tree+0x54/0x1b4 [ 168.792373][ T7309] vfs_get_tree+0x90/0x274 [ 168.793036][ T7309] do_new_mount+0x228/0x810 [ 168.793675][ T7309] path_mount+0x5b4/0x1000 [ 168.794345][ T7309] __arm64_sys_mount+0x514/0x5e4 [ 168.795103][ T7309] invoke_syscall+0x98/0x2b8 [ 168.795788][ T7309] el0_svc_common+0x138/0x258 [ 168.796351][ T7311] loop1: detected capacity change from 0 to 32768 [ 168.796452][ T7309] do_el0_svc+0x58/0x14c [ 168.796469][ T7309] el0_svc+0x78/0x1e0 [ 168.798483][ T7309] el0t_64_sync_handler+0xcc/0xe4 [ 168.799219][ T7309] el0t_64_sync+0x1a0/0x1a4 [ 168.800526][ T7311] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 168.801686][ T7311] CPU: 1 PID: 7311 Comm: syz.1.760 Tainted: G B syzkaller #0 [ 168.803021][ T7311] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 168.804540][ T7311] Call trace: [ 168.805024][ T7311] dump_backtrace+0x0/0x43c [ 168.805724][ T7311] show_stack+0x2c/0x3c [ 168.806338][ T7311] __dump_stack+0x30/0x40 [ 168.807009][ T7311] dump_stack_lvl+0xf8/0x160 [ 168.807669][ T7311] dump_stack+0x1c/0x5c [ 168.808350][ T7311] sysfs_create_dir_ns+0x22c/0x24c [ 168.809107][ T7311] kobject_add_internal+0x590/0xc54 [ 168.809797][ T4856] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 46ms [ 168.809879][ T7311] kobject_init_and_add+0x118/0x17c [ 168.811146][ T4856] gfs2: fsid=syz:syz.0: jid=0: Done [ 168.811853][ T7311] gfs2_sys_fs_add+0x1dc/0x3d8 [ 168.813358][ T7311] gfs2_fill_super+0xdac/0x19e0 [ 168.813586][ T7303] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 168.814126][ T7311] get_tree_bdev+0x358/0x544 [ 168.815873][ T7311] gfs2_get_tree+0x54/0x1b4 [ 168.816545][ T7311] vfs_get_tree+0x90/0x274 [ 168.817180][ T7311] do_new_mount+0x228/0x810 [ 168.817707][ T7303] syz.0.756 (7303): drop_caches: 2 [ 168.817800][ T7311] path_mount+0x5b4/0x1000 [ 168.819251][ T7311] __arm64_sys_mount+0x514/0x5e4 [ 168.819957][ T7311] invoke_syscall+0x98/0x2b8 [ 168.820622][ T7311] el0_svc_common+0x138/0x258 [ 168.821280][ T7311] do_el0_svc+0x58/0x14c [ 168.821889][ T7311] el0_svc+0x78/0x1e0 [ 168.822489][ T7311] el0t_64_sync_handler+0xcc/0xe4 [ 168.823251][ T7311] el0t_64_sync+0x1a0/0x1a4 [ 168.825029][ T7309] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 168.826948][ T7309] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 168.840414][ T7307] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 168.842502][ T7307] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 168.844200][ T7307] syz.2.758 (7307): drop_caches: 2 [ 168.855018][ T7309] syz.3.759 (7309): drop_caches: 2 [ 168.897838][ T7311] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 168.906676][ T7311] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 168.908493][ T7311] syz.1.760 (7311): drop_caches: 2 [ 168.996618][ T7313] loop4: detected capacity change from 0 to 32768 [ 169.061271][ T7313] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 169.062698][ T7313] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 169.064892][ T7313] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 169.066579][ T4856] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 169.067614][ T4856] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 169.099404][ T4856] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 31ms [ 169.100591][ T4856] gfs2: fsid=syz:syz.0: jid=0: Done [ 169.101376][ T7313] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 169.104814][ T7313] syz.4.761 (7313): drop_caches: 2 [ 169.127647][ T7319] loop3: detected capacity change from 0 to 32768 [ 169.136355][ T7315] loop0: detected capacity change from 0 to 32768 [ 169.152305][ T7319] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 169.153555][ T7319] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 169.155728][ T7319] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 169.157566][ T4856] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 169.158490][ T4856] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 169.179892][ T7315] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 169.180954][ T7315] CPU: 1 PID: 7315 Comm: syz.0.762 Tainted: G B syzkaller #0 [ 169.182221][ T7315] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 169.182811][ T7317] loop2: detected capacity change from 0 to 32768 [ 169.183592][ T7315] Call trace: [ 169.183599][ T7315] dump_backtrace+0x0/0x43c [ 169.185719][ T7315] show_stack+0x2c/0x3c [ 169.186343][ T7315] __dump_stack+0x30/0x40 [ 169.186976][ T7315] dump_stack_lvl+0xf8/0x160 [ 169.187630][ T7315] dump_stack+0x1c/0x5c [ 169.188199][ T7315] sysfs_create_dir_ns+0x22c/0x24c [ 169.188234][ T4856] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 29ms [ 169.188892][ T7315] kobject_add_internal+0x590/0xc54 [ 169.190912][ T7315] kobject_init_and_add+0x118/0x17c [ 169.191780][ T7315] gfs2_sys_fs_add+0x1dc/0x3d8 [ 169.192505][ T7315] gfs2_fill_super+0xdac/0x19e0 [ 169.193264][ T7315] get_tree_bdev+0x358/0x544 [ 169.194016][ T7315] gfs2_get_tree+0x54/0x1b4 [ 169.194662][ T7315] vfs_get_tree+0x90/0x274 [ 169.194910][ T4856] gfs2: fsid=syz:syz.0: jid=0: Done [ 169.195415][ T7315] do_new_mount+0x228/0x810 [ 169.196274][ T7319] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 169.196977][ T7315] path_mount+0x5b4/0x1000 [ 169.198731][ T7315] __arm64_sys_mount+0x514/0x5e4 [ 169.199488][ T7315] invoke_syscall+0x98/0x2b8 [ 169.200141][ T7315] el0_svc_common+0x138/0x258 [ 169.200854][ T7315] do_el0_svc+0x58/0x14c [ 169.201441][ T7315] el0_svc+0x78/0x1e0 [ 169.201798][ T7319] syz.3.764 (7319): drop_caches: 2 [ 169.202003][ T7315] el0t_64_sync_handler+0xcc/0xe4 [ 169.203473][ T7315] el0t_64_sync+0x1a0/0x1a4 [ 169.231092][ T7315] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 169.233085][ T7315] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 169.237000][ T7321] loop1: detected capacity change from 0 to 32768 [ 169.238597][ T7315] syz.0.762 (7315): drop_caches: 2 [ 169.260460][ T7321] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 169.261788][ T7321] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 169.265366][ T7321] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 169.265619][ T7317] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 169.267577][ T4219] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 169.267623][ T7317] CPU: 1 PID: 7317 Comm: syz.2.763 Tainted: G B syzkaller #0 [ 169.268580][ T4219] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 169.269923][ T7317] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 169.269937][ T7317] Call trace: [ 169.269942][ T7317] dump_backtrace+0x0/0x43c [ 169.269953][ T7317] show_stack+0x2c/0x3c [ 169.269959][ T7317] __dump_stack+0x30/0x40 [ 169.269968][ T7317] dump_stack_lvl+0xf8/0x160 [ 169.269974][ T7317] dump_stack+0x1c/0x5c [ 169.269980][ T7317] sysfs_create_dir_ns+0x22c/0x24c [ 169.269986][ T7317] kobject_add_internal+0x590/0xc54 [ 169.277562][ T7317] kobject_init_and_add+0x118/0x17c [ 169.278323][ T7317] gfs2_sys_fs_add+0x1dc/0x3d8 [ 169.279060][ T7317] gfs2_fill_super+0xdac/0x19e0 [ 169.279804][ T7317] get_tree_bdev+0x358/0x544 [ 169.280536][ T7317] gfs2_get_tree+0x54/0x1b4 [ 169.281203][ T7317] vfs_get_tree+0x90/0x274 [ 169.281838][ T7317] do_new_mount+0x228/0x810 [ 169.282537][ T7317] path_mount+0x5b4/0x1000 [ 169.283244][ T7317] __arm64_sys_mount+0x514/0x5e4 [ 169.283993][ T7317] invoke_syscall+0x98/0x2b8 [ 169.284680][ T7317] el0_svc_common+0x138/0x258 [ 169.285463][ T7317] do_el0_svc+0x58/0x14c [ 169.286085][ T7317] el0_svc+0x78/0x1e0 [ 169.286684][ T7317] el0t_64_sync_handler+0xcc/0xe4 [ 169.287475][ T7317] el0t_64_sync+0x1a0/0x1a4 [ 169.295414][ T4219] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 26ms [ 169.296622][ T4219] gfs2: fsid=syz:syz.0: jid=0: Done [ 169.297434][ T7321] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 169.301840][ T7321] syz.1.765 (7321): drop_caches: 2 [ 169.362442][ T7317] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 169.364550][ T7317] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 169.366243][ T7317] syz.2.763 (7317): drop_caches: 2 [ 169.499394][ T7327] loop3: detected capacity change from 0 to 32768 [ 169.504021][ T7327] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 169.504551][ T7323] loop4: detected capacity change from 0 to 32768 [ 169.505172][ T7327] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 169.518401][ T7327] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 169.521672][ T7323] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 169.522882][ T7323] CPU: 1 PID: 7323 Comm: syz.4.766 Tainted: G B syzkaller #0 [ 169.524230][ T7323] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 169.524423][ T4219] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 169.525746][ T7323] Call trace: [ 169.526797][ T4219] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 169.527265][ T7323] dump_backtrace+0x0/0x43c [ 169.528961][ T7323] show_stack+0x2c/0x3c [ 169.529567][ T7323] __dump_stack+0x30/0x40 [ 169.530223][ T7323] dump_stack_lvl+0xf8/0x160 [ 169.530898][ T7323] dump_stack+0x1c/0x5c [ 169.531646][ T7323] sysfs_create_dir_ns+0x22c/0x24c [ 169.532441][ T7323] kobject_add_internal+0x590/0xc54 [ 169.533233][ T7323] kobject_init_and_add+0x118/0x17c [ 169.534038][ T7323] gfs2_sys_fs_add+0x1dc/0x3d8 [ 169.534820][ T7323] gfs2_fill_super+0xdac/0x19e0 [ 169.535594][ T7323] get_tree_bdev+0x358/0x544 [ 169.536300][ T7323] gfs2_get_tree+0x54/0x1b4 [ 169.537071][ T7323] vfs_get_tree+0x90/0x274 [ 169.537778][ T7323] do_new_mount+0x228/0x810 [ 169.538523][ T7323] path_mount+0x5b4/0x1000 [ 169.539207][ T7323] __arm64_sys_mount+0x514/0x5e4 [ 169.539928][ T7323] invoke_syscall+0x98/0x2b8 [ 169.540694][ T7323] el0_svc_common+0x138/0x258 [ 169.541379][ T7323] do_el0_svc+0x58/0x14c [ 169.542022][ T7323] el0_svc+0x78/0x1e0 [ 169.542631][ T7323] el0t_64_sync_handler+0xcc/0xe4 [ 169.543364][ T7323] el0t_64_sync+0x1a0/0x1a4 [ 169.555516][ T4219] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 28ms [ 169.556716][ T4219] gfs2: fsid=syz:syz.0: jid=0: Done [ 169.557564][ T7327] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 169.561450][ T7327] syz.3.767 (7327): drop_caches: 2 [ 169.593593][ T7325] loop0: detected capacity change from 0 to 32768 [ 169.599494][ T7323] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 169.601574][ T7323] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 169.606054][ T7323] syz.4.766 (7323): drop_caches: 2 [ 169.640375][ T7325] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 169.641757][ T7325] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 169.644033][ T7325] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 169.645772][ T4858] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 169.646871][ T4858] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 169.657462][ T7329] loop1: detected capacity change from 0 to 32768 [ 169.668312][ T7331] loop2: detected capacity change from 0 to 32768 [ 169.670273][ T7329] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 169.671372][ T7329] CPU: 1 PID: 7329 Comm: syz.1.769 Tainted: G B syzkaller #0 [ 169.672705][ T7329] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 169.674075][ T7329] Call trace: [ 169.674524][ T7329] dump_backtrace+0x0/0x43c [ 169.675178][ T7329] show_stack+0x2c/0x3c [ 169.675781][ T7329] __dump_stack+0x30/0x40 [ 169.676461][ T7329] dump_stack_lvl+0xf8/0x160 [ 169.677177][ T7329] dump_stack+0x1c/0x5c [ 169.677779][ T7329] sysfs_create_dir_ns+0x22c/0x24c [ 169.678529][ T7329] kobject_add_internal+0x590/0xc54 [ 169.679355][ T7329] kobject_init_and_add+0x118/0x17c [ 169.680131][ T7329] gfs2_sys_fs_add+0x1dc/0x3d8 [ 169.680860][ T7329] gfs2_fill_super+0xdac/0x19e0 [ 169.681574][ T7329] get_tree_bdev+0x358/0x544 [ 169.682292][ T7329] gfs2_get_tree+0x54/0x1b4 [ 169.682940][ T7329] vfs_get_tree+0x90/0x274 [ 169.683608][ T7329] do_new_mount+0x228/0x810 [ 169.684247][ T7329] path_mount+0x5b4/0x1000 [ 169.684861][ T7329] __arm64_sys_mount+0x514/0x5e4 [ 169.685554][ T7329] invoke_syscall+0x98/0x2b8 [ 169.686211][ T7329] el0_svc_common+0x138/0x258 [ 169.686924][ T7329] do_el0_svc+0x58/0x14c [ 169.687493][ T7329] el0_svc+0x78/0x1e0 [ 169.688055][ T7329] el0t_64_sync_handler+0xcc/0xe4 [ 169.688777][ T7329] el0t_64_sync+0x1a0/0x1a4 [ 169.694283][ T4858] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 47ms [ 169.695493][ T4858] gfs2: fsid=syz:syz.0: jid=0: Done [ 169.696299][ T7325] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 169.700767][ T7325] syz.0.768 (7325): drop_caches: 2 [ 169.720070][ T7331] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 169.721159][ T7331] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 169.723521][ T7331] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 169.725771][ T4858] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 169.726836][ T4858] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 169.762911][ T4858] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 36ms [ 169.764142][ T4858] gfs2: fsid=syz:syz.0: jid=0: Done [ 169.764942][ T7331] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 169.768290][ T7331] syz.2.770 (7331): drop_caches: 2 [ 169.771598][ T7329] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 169.773449][ T7329] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 169.782533][ T7329] syz.1.769 (7329): drop_caches: 2 [ 169.906511][ T7335] loop3: detected capacity change from 0 to 32768 [ 169.953361][ T7333] loop4: detected capacity change from 0 to 32768 [ 169.960279][ T7335] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 169.961672][ T7335] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 169.963911][ T7335] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 169.965532][ T4856] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 169.966581][ T4856] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 169.983364][ T4856] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 16ms [ 169.984594][ T4856] gfs2: fsid=syz:syz.0: jid=0: Done [ 169.985446][ T7335] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 169.989753][ T7335] syz.3.771 (7335): drop_caches: 2 [ 169.999889][ T7333] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 170.001055][ T7333] CPU: 1 PID: 7333 Comm: syz.4.772 Tainted: G B syzkaller #0 [ 170.002259][ T7333] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 170.003702][ T7333] Call trace: [ 170.004164][ T7333] dump_backtrace+0x0/0x43c [ 170.004841][ T7333] show_stack+0x2c/0x3c [ 170.005423][ T7333] __dump_stack+0x30/0x40 [ 170.006099][ T7333] dump_stack_lvl+0xf8/0x160 [ 170.006766][ T7333] dump_stack+0x1c/0x5c [ 170.007399][ T7333] sysfs_create_dir_ns+0x22c/0x24c [ 170.008104][ T7333] kobject_add_internal+0x590/0xc54 [ 170.008863][ T7333] kobject_init_and_add+0x118/0x17c [ 170.009747][ T7333] gfs2_sys_fs_add+0x1dc/0x3d8 [ 170.010514][ T7333] gfs2_fill_super+0xdac/0x19e0 [ 170.011296][ T7333] get_tree_bdev+0x358/0x544 [ 170.011979][ T7333] gfs2_get_tree+0x54/0x1b4 [ 170.012739][ T7333] vfs_get_tree+0x90/0x274 [ 170.013414][ T7333] do_new_mount+0x228/0x810 [ 170.014134][ T7333] path_mount+0x5b4/0x1000 [ 170.014803][ T7333] __arm64_sys_mount+0x514/0x5e4 [ 170.015529][ T7333] invoke_syscall+0x98/0x2b8 [ 170.016228][ T7333] el0_svc_common+0x138/0x258 [ 170.016943][ T7333] do_el0_svc+0x58/0x14c [ 170.017552][ T7333] el0_svc+0x78/0x1e0 [ 170.018184][ T7333] el0t_64_sync_handler+0xcc/0xe4 [ 170.018950][ T7333] el0t_64_sync+0x1a0/0x1a4 [ 170.072451][ T7333] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 170.074320][ T7333] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 170.084655][ T7341] loop0: detected capacity change from 0 to 32768 [ 170.086393][ T7339] loop1: detected capacity change from 0 to 32768 [ 170.092800][ T7333] syz.4.772 (7333): drop_caches: 2 [ 170.093965][ T7337] loop2: detected capacity change from 0 to 32768 [ 170.111539][ T7339] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 170.112767][ T7339] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 170.113848][ T7341] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 170.114917][ T7341] CPU: 1 PID: 7341 Comm: syz.0.773 Tainted: G B syzkaller #0 [ 170.116136][ T7341] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 170.117601][ T7341] Call trace: [ 170.118103][ T7341] dump_backtrace+0x0/0x43c [ 170.118744][ T7341] show_stack+0x2c/0x3c [ 170.119326][ T7341] __dump_stack+0x30/0x40 [ 170.119985][ T7341] dump_stack_lvl+0xf8/0x160 [ 170.120662][ T7341] dump_stack+0x1c/0x5c [ 170.121267][ T7341] sysfs_create_dir_ns+0x22c/0x24c [ 170.122013][ T7341] kobject_add_internal+0x590/0xc54 [ 170.122766][ T7341] kobject_init_and_add+0x118/0x17c [ 170.123505][ T7341] gfs2_sys_fs_add+0x1dc/0x3d8 [ 170.124202][ T7341] gfs2_fill_super+0xdac/0x19e0 [ 170.124928][ T7341] get_tree_bdev+0x358/0x544 [ 170.125570][ T7341] gfs2_get_tree+0x54/0x1b4 [ 170.126249][ T7341] vfs_get_tree+0x90/0x274 [ 170.126896][ T7341] do_new_mount+0x228/0x810 [ 170.127563][ T7341] path_mount+0x5b4/0x1000 [ 170.128210][ T7341] __arm64_sys_mount+0x514/0x5e4 [ 170.128881][ T7341] invoke_syscall+0x98/0x2b8 [ 170.129561][ T7341] el0_svc_common+0x138/0x258 [ 170.130228][ T7341] do_el0_svc+0x58/0x14c [ 170.130873][ T7341] el0_svc+0x78/0x1e0 [ 170.131392][ T7341] el0t_64_sync_handler+0xcc/0xe4 [ 170.132079][ T7341] el0t_64_sync+0x1a0/0x1a4 [ 170.136797][ T7339] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 170.140212][ T7337] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 170.141341][ T7337] CPU: 0 PID: 7337 Comm: syz.2.774 Tainted: G B syzkaller #0 [ 170.142714][ T7337] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 170.144192][ T7337] Call trace: [ 170.144631][ T7337] dump_backtrace+0x0/0x43c [ 170.145276][ T7337] show_stack+0x2c/0x3c [ 170.145854][ T7337] __dump_stack+0x30/0x40 [ 170.146486][ T7337] dump_stack_lvl+0xf8/0x160 [ 170.147137][ T7337] dump_stack+0x1c/0x5c [ 170.147751][ T7337] sysfs_create_dir_ns+0x22c/0x24c [ 170.148505][ T7337] kobject_add_internal+0x590/0xc54 [ 170.149278][ T7337] kobject_init_and_add+0x118/0x17c [ 170.149999][ T7337] gfs2_sys_fs_add+0x1dc/0x3d8 [ 170.150658][ T7337] gfs2_fill_super+0xdac/0x19e0 [ 170.151299][ T7337] get_tree_bdev+0x358/0x544 [ 170.151922][ T7337] gfs2_get_tree+0x54/0x1b4 [ 170.152550][ T7337] vfs_get_tree+0x90/0x274 [ 170.153122][ T7337] do_new_mount+0x228/0x810 [ 170.153810][ T7337] path_mount+0x5b4/0x1000 [ 170.154436][ T7337] __arm64_sys_mount+0x514/0x5e4 [ 170.155134][ T7337] invoke_syscall+0x98/0x2b8 [ 170.155826][ T7337] el0_svc_common+0x138/0x258 [ 170.156491][ T7337] do_el0_svc+0x58/0x14c [ 170.157075][ T7337] el0_svc+0x78/0x1e0 [ 170.157682][ T7337] el0t_64_sync_handler+0xcc/0xe4 [ 170.158417][ T7337] el0t_64_sync+0x1a0/0x1a4 [ 170.163510][ T4858] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 170.164580][ T4858] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 170.188703][ T7337] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 170.190826][ T7337] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 170.192733][ T4858] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 28ms [ 170.194028][ T4858] gfs2: fsid=syz:syz.0: jid=0: Done [ 170.194893][ T7339] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 170.195674][ T7337] syz.2.774 (7337): drop_caches: 2 [ 170.196332][ T7341] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 170.201555][ T7339] syz.1.775 (7339): drop_caches: 2 [ 170.209230][ T7341] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 170.212187][ T7341] syz.0.773 (7341): drop_caches: 2 [ 170.300283][ T7343] loop3: detected capacity change from 0 to 32768 [ 170.390323][ T7343] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 170.391584][ T7343] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 170.394171][ T7343] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 170.394661][ T7345] loop4: detected capacity change from 0 to 32768 [ 170.399511][ T4219] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 170.400609][ T4219] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 170.413008][ T7347] syz.0.779 (7347): drop_caches: 2 [ 170.425448][ T4219] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 24ms [ 170.433206][ T4219] gfs2: fsid=syz:syz.0: jid=0: Done [ 170.434015][ T7343] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 170.437448][ T7343] syz.3.776 (7343): drop_caches: 2 [ 170.440147][ T7345] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 170.441271][ T7345] CPU: 1 PID: 7345 Comm: syz.4.777 Tainted: G B syzkaller #0 [ 170.442645][ T7345] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 170.444252][ T7345] Call trace: [ 170.444712][ T7345] dump_backtrace+0x0/0x43c [ 170.445403][ T7345] show_stack+0x2c/0x3c [ 170.446039][ T7345] __dump_stack+0x30/0x40 [ 170.446705][ T7345] dump_stack_lvl+0xf8/0x160 [ 170.447372][ T7345] dump_stack+0x1c/0x5c [ 170.447957][ T7345] sysfs_create_dir_ns+0x22c/0x24c [ 170.448639][ T7345] kobject_add_internal+0x590/0xc54 [ 170.449479][ T7345] kobject_init_and_add+0x118/0x17c [ 170.450258][ T7345] gfs2_sys_fs_add+0x1dc/0x3d8 [ 170.450903][ T7345] gfs2_fill_super+0xdac/0x19e0 [ 170.451632][ T7345] get_tree_bdev+0x358/0x544 [ 170.452342][ T7345] gfs2_get_tree+0x54/0x1b4 [ 170.453027][ T7345] vfs_get_tree+0x90/0x274 [ 170.453660][ T7345] do_new_mount+0x228/0x810 [ 170.454295][ T7345] path_mount+0x5b4/0x1000 [ 170.454932][ T7345] __arm64_sys_mount+0x514/0x5e4 [ 170.455643][ T7345] invoke_syscall+0x98/0x2b8 [ 170.456342][ T7345] el0_svc_common+0x138/0x258 [ 170.457029][ T7345] do_el0_svc+0x58/0x14c [ 170.457671][ T7345] el0_svc+0x78/0x1e0 [ 170.458256][ T7345] el0t_64_sync_handler+0xcc/0xe4 [ 170.458991][ T7345] el0t_64_sync+0x1a0/0x1a4 [ 170.509231][ T7345] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 170.511344][ T7345] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 170.528486][ T7351] loop1: detected capacity change from 0 to 32768 [ 170.575289][ T7349] loop2: detected capacity change from 0 to 32768 [ 170.612563][ T7351] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 170.613904][ T7351] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 170.615114][ T7349] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 170.616297][ T7349] CPU: 1 PID: 7349 Comm: syz.2.780 Tainted: G B syzkaller #0 [ 170.617721][ T7349] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 170.619252][ T7349] Call trace: [ 170.619827][ T7349] dump_backtrace+0x0/0x43c [ 170.620536][ T7349] show_stack+0x2c/0x3c [ 170.621180][ T7349] __dump_stack+0x30/0x40 [ 170.621813][ T7349] dump_stack_lvl+0xf8/0x160 [ 170.622431][ T7349] dump_stack+0x1c/0x5c [ 170.623037][ T7349] sysfs_create_dir_ns+0x22c/0x24c [ 170.623317][ T7353] loop0: detected capacity change from 0 to 32768 [ 170.623771][ T7349] kobject_add_internal+0x590/0xc54 [ 170.625547][ T7349] kobject_init_and_add+0x118/0x17c [ 170.626260][ T7349] gfs2_sys_fs_add+0x1dc/0x3d8 [ 170.626950][ T7349] gfs2_fill_super+0xdac/0x19e0 [ 170.627651][ T7349] get_tree_bdev+0x358/0x544 [ 170.628358][ T7349] gfs2_get_tree+0x54/0x1b4 [ 170.629017][ T7349] vfs_get_tree+0x90/0x274 [ 170.629645][ T7349] do_new_mount+0x228/0x810 [ 170.630299][ T7349] path_mount+0x5b4/0x1000 [ 170.630923][ T7349] __arm64_sys_mount+0x514/0x5e4 [ 170.631615][ T7349] invoke_syscall+0x98/0x2b8 [ 170.632281][ T7349] el0_svc_common+0x138/0x258 [ 170.632917][ T7349] do_el0_svc+0x58/0x14c [ 170.633505][ T7349] el0_svc+0x78/0x1e0 [ 170.634095][ T7349] el0t_64_sync_handler+0xcc/0xe4 [ 170.634876][ T7349] el0t_64_sync+0x1a0/0x1a4 [ 170.636946][ T7351] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 170.650188][ T4858] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 170.651247][ T4858] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 170.662327][ T7349] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 170.663819][ T7345] syz.4.777 (7345): drop_caches: 2 [ 170.665337][ T7353] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 170.666512][ T7353] CPU: 0 PID: 7353 Comm: syz.0.781 Tainted: G B syzkaller #0 [ 170.667373][ T4858] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 16ms [ 170.667808][ T7353] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 170.669035][ T4858] gfs2: fsid=syz:syz.0: jid=0: Done [ 170.670429][ T7353] Call trace: [ 170.670436][ T7353] dump_backtrace+0x0/0x43c [ 170.670453][ T7353] show_stack+0x2c/0x3c [ 170.670459][ T7353] __dump_stack+0x30/0x40 [ 170.670468][ T7353] dump_stack_lvl+0xf8/0x160 [ 170.671304][ T7351] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 170.671738][ T7353] dump_stack+0x1c/0x5c [ 170.674656][ T7351] syz.1.778 (7351): drop_caches: 2 [ 170.675416][ T7353] sysfs_create_dir_ns+0x22c/0x24c [ 170.677605][ T7353] kobject_add_internal+0x590/0xc54 [ 170.678397][ T7353] kobject_init_and_add+0x118/0x17c [ 170.679169][ T7353] gfs2_sys_fs_add+0x1dc/0x3d8 [ 170.679951][ T7353] gfs2_fill_super+0xdac/0x19e0 [ 170.680663][ T7353] get_tree_bdev+0x358/0x544 [ 170.681328][ T7353] gfs2_get_tree+0x54/0x1b4 [ 170.681951][ T7353] vfs_get_tree+0x90/0x274 [ 170.682575][ T7353] do_new_mount+0x228/0x810 [ 170.683180][ T7353] path_mount+0x5b4/0x1000 [ 170.683830][ T7353] __arm64_sys_mount+0x514/0x5e4 [ 170.684617][ T7353] invoke_syscall+0x98/0x2b8 [ 170.685269][ T7353] el0_svc_common+0x138/0x258 [ 170.685993][ T7353] do_el0_svc+0x58/0x14c [ 170.686624][ T7353] el0_svc+0x78/0x1e0 [ 170.687232][ T7353] el0t_64_sync_handler+0xcc/0xe4 [ 170.687975][ T7353] el0t_64_sync+0x1a0/0x1a4 [ 170.691486][ T7349] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 170.718301][ T7353] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 170.721528][ T7353] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 170.724638][ T7355] loop3: detected capacity change from 0 to 32768 [ 170.746764][ T7353] syz.0.781 (7353): drop_caches: 2 [ 170.772169][ T7355] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 170.773398][ T7355] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 170.776095][ T7355] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 170.781393][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 170.782364][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 170.806047][ T7349] syz.2.780 (7349): drop_caches: 2 [ 170.807889][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 25ms [ 170.809074][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 170.814080][ T7355] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 170.818183][ T7355] syz.3.782 (7355): drop_caches: 2 [ 170.883995][ T7358] loop1: detected capacity change from 0 to 32768 [ 170.925047][ T7358] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 170.926299][ T7358] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 170.928592][ T7358] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 170.932747][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 170.933723][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 170.948134][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 14ms [ 170.951194][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 170.951918][ T7358] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 170.955300][ T7358] syz.1.783 (7358): drop_caches: 2 [ 171.058517][ T7359] loop4: detected capacity change from 0 to 32768 [ 171.103341][ T7359] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 171.104575][ T7359] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 171.106971][ T7359] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 171.116012][ T7361] loop0: detected capacity change from 0 to 32768 [ 171.117173][ T4856] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 171.118145][ T4856] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 171.133588][ T7363] loop2: detected capacity change from 0 to 32768 [ 171.134856][ T4856] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 16ms [ 171.135887][ T4856] gfs2: fsid=syz:syz.0: jid=0: Done [ 171.136572][ T7359] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 171.149532][ T7361] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 171.150672][ T7361] CPU: 0 PID: 7361 Comm: syz.0.785 Tainted: G B syzkaller #0 [ 171.151126][ T7359] syz.4.784 (7359): drop_caches: 2 [ 171.151968][ T7361] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 171.154175][ T7361] Call trace: [ 171.154642][ T7361] dump_backtrace+0x0/0x43c [ 171.155268][ T7361] show_stack+0x2c/0x3c [ 171.155799][ T7361] __dump_stack+0x30/0x40 [ 171.156385][ T7361] dump_stack_lvl+0xf8/0x160 [ 171.157019][ T7361] dump_stack+0x1c/0x5c [ 171.157625][ T7361] sysfs_create_dir_ns+0x22c/0x24c [ 171.158337][ T7361] kobject_add_internal+0x590/0xc54 [ 171.159050][ T7361] kobject_init_and_add+0x118/0x17c [ 171.159817][ T7361] gfs2_sys_fs_add+0x1dc/0x3d8 [ 171.160498][ T7361] gfs2_fill_super+0xdac/0x19e0 [ 171.161252][ T7361] get_tree_bdev+0x358/0x544 [ 171.161920][ T7361] gfs2_get_tree+0x54/0x1b4 [ 171.162567][ T7361] vfs_get_tree+0x90/0x274 [ 171.163186][ T7361] do_new_mount+0x228/0x810 [ 171.163865][ T7361] path_mount+0x5b4/0x1000 [ 171.164510][ T7361] __arm64_sys_mount+0x514/0x5e4 [ 171.165225][ T7361] invoke_syscall+0x98/0x2b8 [ 171.165908][ T7361] el0_svc_common+0x138/0x258 [ 171.166566][ T7361] do_el0_svc+0x58/0x14c [ 171.167155][ T7361] el0_svc+0x78/0x1e0 [ 171.167692][ T7361] el0t_64_sync_handler+0xcc/0xe4 [ 171.168432][ T7361] el0t_64_sync+0x1a0/0x1a4 [ 171.190059][ T7363] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 171.191230][ T7363] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 171.193384][ T7363] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 171.194963][ T4856] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 171.195936][ T4856] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 171.212337][ T7365] loop3: detected capacity change from 0 to 32768 [ 171.221906][ T4856] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 25ms [ 171.223351][ T4856] gfs2: fsid=syz:syz.0: jid=0: Done [ 171.224146][ T7363] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 171.226423][ T7361] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 171.228834][ T7361] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 171.232067][ T7363] syz.2.787 (7363): drop_caches: 2 [ 171.241076][ T7361] syz.0.785 (7361): drop_caches: 2 [ 171.285593][ T7367] loop1: detected capacity change from 0 to 32768 [ 171.290520][ T7365] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 171.291774][ T7365] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 171.294057][ T7365] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 171.298980][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 171.300126][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 171.328633][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 28ms [ 171.329923][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 171.330756][ T7365] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 171.334838][ T7365] syz.3.786 (7365): drop_caches: 2 [ 171.352689][ T7367] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 171.353773][ T7367] CPU: 1 PID: 7367 Comm: syz.1.788 Tainted: G B syzkaller #0 [ 171.355067][ T7367] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 171.356518][ T7367] Call trace: [ 171.357021][ T7367] dump_backtrace+0x0/0x43c [ 171.357647][ T7367] show_stack+0x2c/0x3c [ 171.358245][ T7367] __dump_stack+0x30/0x40 [ 171.358846][ T7367] dump_stack_lvl+0xf8/0x160 [ 171.359619][ T7367] dump_stack+0x1c/0x5c [ 171.360261][ T7367] sysfs_create_dir_ns+0x22c/0x24c [ 171.361063][ T7367] kobject_add_internal+0x590/0xc54 [ 171.361898][ T7367] kobject_init_and_add+0x118/0x17c [ 171.362670][ T7367] gfs2_sys_fs_add+0x1dc/0x3d8 [ 171.363373][ T7367] gfs2_fill_super+0xdac/0x19e0 [ 171.364098][ T7367] get_tree_bdev+0x358/0x544 [ 171.364717][ T7367] gfs2_get_tree+0x54/0x1b4 [ 171.365364][ T7367] vfs_get_tree+0x90/0x274 [ 171.365998][ T7367] do_new_mount+0x228/0x810 [ 171.366675][ T7367] path_mount+0x5b4/0x1000 [ 171.367308][ T7367] __arm64_sys_mount+0x514/0x5e4 [ 171.368028][ T7367] invoke_syscall+0x98/0x2b8 [ 171.368743][ T7367] el0_svc_common+0x138/0x258 [ 171.369464][ T7367] do_el0_svc+0x58/0x14c [ 171.370101][ T7367] el0_svc+0x78/0x1e0 [ 171.370648][ T7367] el0t_64_sync_handler+0xcc/0xe4 [ 171.371348][ T7367] el0t_64_sync+0x1a0/0x1a4 [ 171.409285][ T7367] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 171.411309][ T7367] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 171.415558][ T7369] loop4: detected capacity change from 0 to 32768 [ 171.441687][ T7367] syz.1.788 (7367): drop_caches: 2 [ 171.451558][ T7369] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 171.452761][ T7369] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 171.455011][ T7369] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 171.456638][ T4856] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 171.457684][ T4856] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 171.484405][ T4856] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 26ms [ 171.485613][ T4856] gfs2: fsid=syz:syz.0: jid=0: Done [ 171.486391][ T7369] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 171.489730][ T7369] syz.4.789 (7369): drop_caches: 2 [ 171.543513][ T7371] loop0: detected capacity change from 0 to 32768 [ 171.581456][ T7373] loop2: detected capacity change from 0 to 32768 [ 171.590610][ T7371] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 171.591953][ T7371] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 171.594243][ T7371] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 171.595806][ T4858] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 171.596960][ T4858] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 171.622761][ T4858] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 25ms [ 171.623941][ T4858] gfs2: fsid=syz:syz.0: jid=0: Done [ 171.624777][ T7371] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 171.628778][ T7371] syz.0.791 (7371): drop_caches: 2 [ 171.645772][ T7375] loop3: detected capacity change from 0 to 32768 [ 171.670321][ T7373] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 171.671514][ T7373] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 171.673601][ T7373] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 171.675163][ T4858] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 171.676230][ T4858] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 171.686677][ T7375] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 171.687760][ T7375] CPU: 1 PID: 7375 Comm: syz.3.792 Tainted: G B syzkaller #0 [ 171.689075][ T7375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 171.690604][ T7375] Call trace: [ 171.691141][ T7375] dump_backtrace+0x0/0x43c [ 171.691812][ T7375] show_stack+0x2c/0x3c [ 171.692449][ T7375] __dump_stack+0x30/0x40 [ 171.693111][ T7375] dump_stack_lvl+0xf8/0x160 [ 171.693846][ T7375] dump_stack+0x1c/0x5c [ 171.694467][ T7375] sysfs_create_dir_ns+0x22c/0x24c [ 171.695205][ T7375] kobject_add_internal+0x590/0xc54 [ 171.696030][ T7375] kobject_init_and_add+0x118/0x17c [ 171.696859][ T7375] gfs2_sys_fs_add+0x1dc/0x3d8 [ 171.697615][ T7375] gfs2_fill_super+0xdac/0x19e0 [ 171.698325][ T7375] get_tree_bdev+0x358/0x544 [ 171.699012][ T7375] gfs2_get_tree+0x54/0x1b4 [ 171.699661][ T7375] vfs_get_tree+0x90/0x274 [ 171.700321][ T7375] do_new_mount+0x228/0x810 [ 171.701020][ T7375] path_mount+0x5b4/0x1000 [ 171.701677][ T7375] __arm64_sys_mount+0x514/0x5e4 [ 171.702402][ T7375] invoke_syscall+0x98/0x2b8 [ 171.703059][ T7375] el0_svc_common+0x138/0x258 [ 171.703724][ T7375] do_el0_svc+0x58/0x14c [ 171.704296][ T7375] el0_svc+0x78/0x1e0 [ 171.704840][ T7375] el0t_64_sync_handler+0xcc/0xe4 [ 171.705562][ T7375] el0t_64_sync+0x1a0/0x1a4 [ 171.727131][ T7379] loop4: detected capacity change from 0 to 32768 [ 171.736893][ T4858] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 60ms [ 171.738154][ T4858] gfs2: fsid=syz:syz.0: jid=0: Done [ 171.738983][ T7373] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 171.743011][ T7373] syz.2.790 (7373): drop_caches: 2 [ 171.762154][ T7379] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 171.763359][ T7379] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 171.765516][ T7379] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 171.767153][ T4859] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 171.767182][ T7375] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 171.768190][ T4859] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 171.770293][ T7375] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 171.772702][ T7377] loop1: detected capacity change from 0 to 32768 [ 171.780952][ T7375] syz.3.792 (7375): drop_caches: 2 [ 171.805568][ T4859] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 37ms [ 171.806784][ T4859] gfs2: fsid=syz:syz.0: jid=0: Done [ 171.807545][ T7379] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 171.811229][ T7379] syz.4.794 (7379): drop_caches: 2 [ 171.829853][ T7377] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 171.831008][ T7377] CPU: 1 PID: 7377 Comm: syz.1.793 Tainted: G B syzkaller #0 [ 171.832162][ T7377] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 171.833602][ T7377] Call trace: [ 171.834057][ T7377] dump_backtrace+0x0/0x43c [ 171.834727][ T7377] show_stack+0x2c/0x3c [ 171.835404][ T7377] __dump_stack+0x30/0x40 [ 171.836046][ T7377] dump_stack_lvl+0xf8/0x160 [ 171.836722][ T7377] dump_stack+0x1c/0x5c [ 171.837341][ T7377] sysfs_create_dir_ns+0x22c/0x24c [ 171.838119][ T7377] kobject_add_internal+0x590/0xc54 [ 171.838899][ T7377] kobject_init_and_add+0x118/0x17c [ 171.839664][ T7377] gfs2_sys_fs_add+0x1dc/0x3d8 [ 171.840372][ T7377] gfs2_fill_super+0xdac/0x19e0 [ 171.841092][ T7377] get_tree_bdev+0x358/0x544 [ 171.841759][ T7377] gfs2_get_tree+0x54/0x1b4 [ 171.842422][ T7377] vfs_get_tree+0x90/0x274 [ 171.843133][ T7377] do_new_mount+0x228/0x810 [ 171.843783][ T7377] path_mount+0x5b4/0x1000 [ 171.844406][ T7377] __arm64_sys_mount+0x514/0x5e4 [ 171.845182][ T7377] invoke_syscall+0x98/0x2b8 [ 171.845855][ T7377] el0_svc_common+0x138/0x258 [ 171.846603][ T7377] do_el0_svc+0x58/0x14c [ 171.847215][ T7377] el0_svc+0x78/0x1e0 [ 171.847784][ T7377] el0t_64_sync_handler+0xcc/0xe4 [ 171.848515][ T7377] el0t_64_sync+0x1a0/0x1a4 [ 171.900895][ T7377] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 171.902857][ T7377] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 172.005999][ T7383] loop2: detected capacity change from 0 to 32768 [ 172.020468][ T7377] syz.1.793 (7377): drop_caches: 2 [ 172.033888][ T7383] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 172.035136][ T7383] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 172.037782][ T7383] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 172.043379][ T4859] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 172.044370][ T4859] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 172.063696][ T4859] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 19ms [ 172.065003][ T4859] gfs2: fsid=syz:syz.0: jid=0: Done [ 172.065902][ T7383] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 172.066178][ T7381] loop0: detected capacity change from 0 to 32768 [ 172.072827][ T7383] syz.2.796 (7383): drop_caches: 2 [ 172.086073][ T7385] loop3: detected capacity change from 0 to 32768 [ 172.131867][ T7385] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 172.133084][ T7385] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 172.135220][ T7385] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 172.136851][ T4159] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 172.137936][ T4159] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 172.143222][ T7381] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 172.144777][ T7381] CPU: 1 PID: 7381 Comm: syz.0.795 Tainted: G B syzkaller #0 [ 172.146049][ T7381] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 172.147522][ T7381] Call trace: [ 172.147962][ T7381] dump_backtrace+0x0/0x43c [ 172.148667][ T7381] show_stack+0x2c/0x3c [ 172.149315][ T7381] __dump_stack+0x30/0x40 [ 172.149914][ T7381] dump_stack_lvl+0xf8/0x160 [ 172.150594][ T7381] dump_stack+0x1c/0x5c [ 172.151207][ T7381] sysfs_create_dir_ns+0x22c/0x24c [ 172.151951][ T7381] kobject_add_internal+0x590/0xc54 [ 172.152691][ T7381] kobject_init_and_add+0x118/0x17c [ 172.153509][ T7381] gfs2_sys_fs_add+0x1dc/0x3d8 [ 172.154180][ T7381] gfs2_fill_super+0xdac/0x19e0 [ 172.154898][ T7381] get_tree_bdev+0x358/0x544 [ 172.155557][ T7381] gfs2_get_tree+0x54/0x1b4 [ 172.156215][ T7381] vfs_get_tree+0x90/0x274 [ 172.156905][ T7381] do_new_mount+0x228/0x810 [ 172.157607][ T7381] path_mount+0x5b4/0x1000 [ 172.158282][ T7381] __arm64_sys_mount+0x514/0x5e4 [ 172.158980][ T7381] invoke_syscall+0x98/0x2b8 [ 172.159613][ T7381] el0_svc_common+0x138/0x258 [ 172.160364][ T7381] do_el0_svc+0x58/0x14c [ 172.161000][ T7381] el0_svc+0x78/0x1e0 [ 172.161602][ T7381] el0t_64_sync_handler+0xcc/0xe4 [ 172.162310][ T7381] el0t_64_sync+0x1a0/0x1a4 [ 172.179146][ T7387] loop4: detected capacity change from 0 to 32768 [ 172.197109][ T4159] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 59ms [ 172.198357][ T4159] gfs2: fsid=syz:syz.0: jid=0: Done [ 172.200560][ T7385] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 172.204602][ T7385] syz.3.797 (7385): drop_caches: 2 [ 172.205141][ T7381] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 172.207244][ T7381] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 172.232628][ T7387] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 172.233768][ T7387] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 172.241269][ T7387] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 172.247263][ T4159] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 172.248268][ T4159] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 172.284429][ T4159] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 36ms [ 172.285585][ T4159] gfs2: fsid=syz:syz.0: jid=0: Done [ 172.286313][ T7387] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 172.289844][ T7387] syz.4.798 (7387): drop_caches: 2 [ 172.290826][ T7381] syz.0.795 (7381): drop_caches: 2 [ 172.377540][ T7391] loop2: detected capacity change from 0 to 32768 [ 172.405535][ T7389] loop1: detected capacity change from 0 to 32768 [ 172.410934][ T7393] loop3: detected capacity change from 0 to 32768 [ 172.434128][ T7391] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 172.435345][ T7391] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 172.436525][ T7389] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 172.437615][ T7389] CPU: 1 PID: 7389 Comm: syz.1.799 Tainted: G B syzkaller #0 [ 172.438780][ T7389] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 172.440478][ T7389] Call trace: [ 172.440946][ T7389] dump_backtrace+0x0/0x43c [ 172.441604][ T7389] show_stack+0x2c/0x3c [ 172.442187][ T7389] __dump_stack+0x30/0x40 [ 172.442829][ T7389] dump_stack_lvl+0xf8/0x160 [ 172.443540][ T7389] dump_stack+0x1c/0x5c [ 172.444169][ T7389] sysfs_create_dir_ns+0x22c/0x24c [ 172.444872][ T7389] kobject_add_internal+0x590/0xc54 [ 172.445579][ T7389] kobject_init_and_add+0x118/0x17c [ 172.446380][ T7389] gfs2_sys_fs_add+0x1dc/0x3d8 [ 172.447086][ T7389] gfs2_fill_super+0xdac/0x19e0 [ 172.447808][ T7389] get_tree_bdev+0x358/0x544 [ 172.448489][ T7389] gfs2_get_tree+0x54/0x1b4 [ 172.449121][ T7389] vfs_get_tree+0x90/0x274 [ 172.449711][ T7389] do_new_mount+0x228/0x810 [ 172.450402][ T7389] path_mount+0x5b4/0x1000 [ 172.451051][ T7389] __arm64_sys_mount+0x514/0x5e4 [ 172.451844][ T7389] invoke_syscall+0x98/0x2b8 [ 172.452509][ T7389] el0_svc_common+0x138/0x258 [ 172.453168][ T7389] do_el0_svc+0x58/0x14c [ 172.453840][ T7389] el0_svc+0x78/0x1e0 [ 172.454410][ T7389] el0t_64_sync_handler+0xcc/0xe4 [ 172.455088][ T7389] el0t_64_sync+0x1a0/0x1a4 [ 172.456654][ T7393] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 172.457821][ T7393] CPU: 0 PID: 7393 Comm: syz.3.801 Tainted: G B syzkaller #0 [ 172.459111][ T7393] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 172.460310][ T7391] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 172.460671][ T7393] Call trace: [ 172.462340][ T7393] dump_backtrace+0x0/0x43c [ 172.463013][ T7393] show_stack+0x2c/0x3c [ 172.463606][ T7393] __dump_stack+0x30/0x40 [ 172.464213][ T7393] dump_stack_lvl+0xf8/0x160 [ 172.464880][ T7393] dump_stack+0x1c/0x5c [ 172.465486][ T7393] sysfs_create_dir_ns+0x22c/0x24c [ 172.466228][ T7393] kobject_add_internal+0x590/0xc54 [ 172.466972][ T7393] kobject_init_and_add+0x118/0x17c [ 172.467693][ T7393] gfs2_sys_fs_add+0x1dc/0x3d8 [ 172.468387][ T7393] gfs2_fill_super+0xdac/0x19e0 [ 172.469109][ T7393] get_tree_bdev+0x358/0x544 [ 172.469796][ T7393] gfs2_get_tree+0x54/0x1b4 [ 172.470450][ T7393] vfs_get_tree+0x90/0x274 [ 172.470554][ T4159] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 172.471127][ T7393] do_new_mount+0x228/0x810 [ 172.472110][ T4159] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 172.472686][ T7393] path_mount+0x5b4/0x1000 [ 172.474255][ T7393] __arm64_sys_mount+0x514/0x5e4 [ 172.475093][ T7393] invoke_syscall+0x98/0x2b8 [ 172.475837][ T7393] el0_svc_common+0x138/0x258 [ 172.476589][ T7393] do_el0_svc+0x58/0x14c [ 172.477243][ T7393] el0_svc+0x78/0x1e0 [ 172.477906][ T7393] el0t_64_sync_handler+0xcc/0xe4 [ 172.478700][ T7393] el0t_64_sync+0x1a0/0x1a4 [ 172.499280][ T4159] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 27ms [ 172.500661][ T4159] gfs2: fsid=syz:syz.0: jid=0: Done [ 172.501519][ T7391] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 172.503456][ T7393] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 172.506036][ T7389] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 172.506069][ T7393] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 172.509991][ T7391] syz.2.800 (7391): drop_caches: 2 [ 172.519247][ T7389] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 172.521137][ T7393] syz.3.801 (7393): drop_caches: 2 [ 172.575768][ T7397] loop4: detected capacity change from 0 to 32768 [ 172.583799][ T7396] loop0: detected capacity change from 0 to 32768 [ 172.620281][ T7396] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 172.621586][ T7396] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 172.623983][ T7396] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 172.626911][ T7389] syz.1.799 (7389): drop_caches: 2 [ 172.628245][ T4219] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 172.629154][ T4219] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 172.630194][ T7397] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 172.631364][ T7397] CPU: 1 PID: 7397 Comm: syz.4.803 Tainted: G B syzkaller #0 [ 172.632702][ T7397] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 172.634172][ T7397] Call trace: [ 172.634670][ T7397] dump_backtrace+0x0/0x43c [ 172.635315][ T7397] show_stack+0x2c/0x3c [ 172.635879][ T7397] __dump_stack+0x30/0x40 [ 172.636499][ T7397] dump_stack_lvl+0xf8/0x160 [ 172.637172][ T7397] dump_stack+0x1c/0x5c [ 172.637789][ T7397] sysfs_create_dir_ns+0x22c/0x24c [ 172.638527][ T7397] kobject_add_internal+0x590/0xc54 [ 172.639345][ T7397] kobject_init_and_add+0x118/0x17c [ 172.640118][ T7397] gfs2_sys_fs_add+0x1dc/0x3d8 [ 172.640860][ T7397] gfs2_fill_super+0xdac/0x19e0 [ 172.641569][ T7397] get_tree_bdev+0x358/0x544 [ 172.642270][ T7397] gfs2_get_tree+0x54/0x1b4 [ 172.642930][ T7397] vfs_get_tree+0x90/0x274 [ 172.643606][ T7397] do_new_mount+0x228/0x810 [ 172.644260][ T7397] path_mount+0x5b4/0x1000 [ 172.644892][ T7397] __arm64_sys_mount+0x514/0x5e4 [ 172.645668][ T7397] invoke_syscall+0x98/0x2b8 [ 172.646347][ T7397] el0_svc_common+0x138/0x258 [ 172.647087][ T7397] do_el0_svc+0x58/0x14c [ 172.647736][ T7397] el0_svc+0x78/0x1e0 [ 172.648338][ T7397] el0t_64_sync_handler+0xcc/0xe4 [ 172.649117][ T7397] el0t_64_sync+0x1a0/0x1a4 [ 172.664025][ T7397] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 172.666135][ T7397] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 172.668127][ T4219] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 38ms [ 172.671357][ T4219] gfs2: fsid=syz:syz.0: jid=0: Done [ 172.672156][ T7396] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 172.675712][ T7396] syz.0.802 (7396): drop_caches: 2 [ 172.710960][ T7397] syz.4.803 (7397): drop_caches: 2 [ 172.784420][ T7401] loop3: detected capacity change from 0 to 32768 [ 172.806479][ T7399] loop2: detected capacity change from 0 to 32768 [ 172.830271][ T7401] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 172.831531][ T7401] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 172.833733][ T7401] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 172.835331][ T4857] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 172.836377][ T4857] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 172.841315][ T7399] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 172.842464][ T7399] CPU: 1 PID: 7399 Comm: syz.2.804 Tainted: G B syzkaller #0 [ 172.843817][ T7399] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 172.845370][ T7399] Call trace: [ 172.845870][ T7399] dump_backtrace+0x0/0x43c [ 172.846585][ T7399] show_stack+0x2c/0x3c [ 172.847187][ T7399] __dump_stack+0x30/0x40 [ 172.847863][ T7399] dump_stack_lvl+0xf8/0x160 [ 172.848634][ T7399] dump_stack+0x1c/0x5c [ 172.849316][ T7399] sysfs_create_dir_ns+0x22c/0x24c [ 172.850132][ T7399] kobject_add_internal+0x590/0xc54 [ 172.850959][ T7399] kobject_init_and_add+0x118/0x17c [ 172.851763][ T7399] gfs2_sys_fs_add+0x1dc/0x3d8 [ 172.852405][ T7399] gfs2_fill_super+0xdac/0x19e0 [ 172.853122][ T7399] get_tree_bdev+0x358/0x544 [ 172.853839][ T7399] gfs2_get_tree+0x54/0x1b4 [ 172.854538][ T7399] vfs_get_tree+0x90/0x274 [ 172.855152][ T7399] do_new_mount+0x228/0x810 [ 172.855854][ T7399] path_mount+0x5b4/0x1000 [ 172.856185][ T4857] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 19ms [ 172.856517][ T7399] __arm64_sys_mount+0x514/0x5e4 [ 172.857707][ T4857] gfs2: fsid=syz:syz.0: jid=0: Done [ 172.858351][ T7399] invoke_syscall+0x98/0x2b8 [ 172.859146][ T7401] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 172.859751][ T7399] el0_svc_common+0x138/0x258 [ 172.861606][ T7399] do_el0_svc+0x58/0x14c [ 172.862246][ T7399] el0_svc+0x78/0x1e0 [ 172.862825][ T7399] el0t_64_sync_handler+0xcc/0xe4 [ 172.863574][ T7399] el0t_64_sync+0x1a0/0x1a4 [ 172.871983][ T7401] syz.3.805 (7401): drop_caches: 2 [ 172.912610][ T7399] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 172.914879][ T7399] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 172.941136][ T7403] loop1: detected capacity change from 0 to 32768 [ 172.975461][ T7406] loop0: detected capacity change from 0 to 32768 [ 172.989796][ T7403] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 172.990118][ T7406] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 172.990992][ T7403] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 172.992115][ T7406] CPU: 1 PID: 7406 Comm: syz.0.807 Tainted: G B syzkaller #0 [ 172.994343][ T7406] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 172.995879][ T7406] Call trace: [ 172.996435][ T7406] dump_backtrace+0x0/0x43c [ 172.997154][ T7406] show_stack+0x2c/0x3c [ 172.997823][ T7406] __dump_stack+0x30/0x40 [ 172.998483][ T7406] dump_stack_lvl+0xf8/0x160 [ 172.999215][ T7406] dump_stack+0x1c/0x5c [ 172.999838][ T7406] sysfs_create_dir_ns+0x22c/0x24c [ 173.000594][ T7406] kobject_add_internal+0x590/0xc54 [ 173.001445][ T7406] kobject_init_and_add+0x118/0x17c [ 173.001603][ T7403] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 173.002264][ T7406] gfs2_sys_fs_add+0x1dc/0x3d8 [ 173.004155][ T7406] gfs2_fill_super+0xdac/0x19e0 [ 173.004937][ T7406] get_tree_bdev+0x358/0x544 [ 173.005653][ T7406] gfs2_get_tree+0x54/0x1b4 [ 173.006358][ T7406] vfs_get_tree+0x90/0x274 [ 173.007064][ T7406] do_new_mount+0x228/0x810 [ 173.007587][ T4859] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 173.007759][ T7406] path_mount+0x5b4/0x1000 [ 173.008773][ T4859] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 173.009374][ T7406] __arm64_sys_mount+0x514/0x5e4 [ 173.009388][ T7406] invoke_syscall+0x98/0x2b8 [ 173.009401][ T7406] el0_svc_common+0x138/0x258 [ 173.009408][ T7406] do_el0_svc+0x58/0x14c [ 173.009413][ T7406] el0_svc+0x78/0x1e0 [ 173.009418][ T7406] el0t_64_sync_handler+0xcc/0xe4 [ 173.009423][ T7406] el0t_64_sync+0x1a0/0x1a4 [ 173.025047][ T7407] loop4: detected capacity change from 0 to 32768 [ 173.029706][ T7399] syz.2.804 (7399): drop_caches: 2 [ 173.037784][ T4859] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 29ms [ 173.038945][ T4859] gfs2: fsid=syz:syz.0: jid=0: Done [ 173.039801][ T7403] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 173.047171][ T7403] syz.1.806 (7403): drop_caches: 2 [ 173.060615][ T7406] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 173.062501][ T7406] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 173.070023][ T7406] syz.0.807 (7406): drop_caches: 2 [ 173.088880][ T7407] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 173.094760][ T7407] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 173.099460][ T7407] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 173.102735][ T4859] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 173.103663][ T4859] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 173.140523][ T4859] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 36ms [ 173.141803][ T4859] gfs2: fsid=syz:syz.0: jid=0: Done [ 173.142630][ T7407] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 173.151679][ T7407] syz.4.808 (7407): drop_caches: 2 1970/01/01 00:02:53 executed programs: 807 [ 173.206004][ T7409] loop3: detected capacity change from 0 to 32768 [ 173.281122][ T7409] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 173.282465][ T7409] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 173.289566][ T7409] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 173.298635][ T4857] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 173.299725][ T4857] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 173.323041][ T4857] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 23ms [ 173.324253][ T4857] gfs2: fsid=syz:syz.0: jid=0: Done [ 173.325129][ T7409] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 173.329859][ T7409] syz.3.809 (7409): drop_caches: 2 [ 173.371372][ T7417] loop4: detected capacity change from 0 to 32768 [ 173.375301][ T7411] loop2: detected capacity change from 0 to 32768 [ 173.401458][ T7417] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 173.402812][ T7417] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 173.404008][ T7411] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 173.404991][ T7411] CPU: 0 PID: 7411 Comm: syz.2.810 Tainted: G B syzkaller #0 [ 173.405405][ T7415] loop0: detected capacity change from 0 to 32768 [ 173.406241][ T7411] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 173.406255][ T7411] Call trace: [ 173.406260][ T7411] dump_backtrace+0x0/0x43c [ 173.409861][ T7411] show_stack+0x2c/0x3c [ 173.410509][ T7411] __dump_stack+0x30/0x40 [ 173.411211][ T7411] dump_stack_lvl+0xf8/0x160 [ 173.411833][ T7411] dump_stack+0x1c/0x5c [ 173.412422][ T7411] sysfs_create_dir_ns+0x22c/0x24c [ 173.413179][ T7411] kobject_add_internal+0x590/0xc54 [ 173.413980][ T7411] kobject_init_and_add+0x118/0x17c [ 173.414709][ T7411] gfs2_sys_fs_add+0x1dc/0x3d8 [ 173.415470][ T7411] gfs2_fill_super+0xdac/0x19e0 [ 173.416226][ T7411] get_tree_bdev+0x358/0x544 [ 173.416910][ T7411] gfs2_get_tree+0x54/0x1b4 [ 173.417549][ T7411] vfs_get_tree+0x90/0x274 [ 173.418240][ T7411] do_new_mount+0x228/0x810 [ 173.418932][ T7411] path_mount+0x5b4/0x1000 [ 173.419566][ T7411] __arm64_sys_mount+0x514/0x5e4 [ 173.420310][ T7411] invoke_syscall+0x98/0x2b8 [ 173.421020][ T7411] el0_svc_common+0x138/0x258 [ 173.421731][ T7411] do_el0_svc+0x58/0x14c [ 173.422317][ T7411] el0_svc+0x78/0x1e0 [ 173.422896][ T7411] el0t_64_sync_handler+0xcc/0xe4 [ 173.423582][ T7411] el0t_64_sync+0x1a0/0x1a4 [ 173.432928][ T7417] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 173.434579][ T4859] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 173.435550][ T4859] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 173.464675][ T4859] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 29ms [ 173.465933][ T4859] gfs2: fsid=syz:syz.0: jid=0: Done [ 173.466728][ T7417] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 173.470319][ T7417] syz.4.813 (7417): drop_caches: 2 [ 173.472930][ T7411] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 173.478921][ T7413] loop1: detected capacity change from 0 to 32768 [ 173.479878][ T7415] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 173.479890][ T7415] CPU: 1 PID: 7415 Comm: syz.0.812 Tainted: G B syzkaller #0 [ 173.479898][ T7415] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 173.479903][ T7415] Call trace: [ 173.479905][ T7415] dump_backtrace+0x0/0x43c [ 173.479915][ T7415] show_stack+0x2c/0x3c [ 173.479920][ T7415] __dump_stack+0x30/0x40 [ 173.479928][ T7415] dump_stack_lvl+0xf8/0x160 [ 173.479933][ T7415] dump_stack+0x1c/0x5c [ 173.479938][ T7415] sysfs_create_dir_ns+0x22c/0x24c [ 173.479945][ T7415] kobject_add_internal+0x590/0xc54 [ 173.479951][ T7415] kobject_init_and_add+0x118/0x17c [ 173.479957][ T7415] gfs2_sys_fs_add+0x1dc/0x3d8 [ 173.479964][ T7415] gfs2_fill_super+0xdac/0x19e0 [ 173.479968][ T7415] get_tree_bdev+0x358/0x544 [ 173.479974][ T7415] gfs2_get_tree+0x54/0x1b4 [ 173.479978][ T7415] vfs_get_tree+0x90/0x274 [ 173.479983][ T7415] do_new_mount+0x228/0x810 [ 173.487647][ T7411] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 173.488095][ T7415] path_mount+0x5b4/0x1000 [ 173.491347][ T7411] syz.2.810 (7411): drop_caches: 2 [ 173.491837][ T7415] __arm64_sys_mount+0x514/0x5e4 [ 173.497514][ T7415] invoke_syscall+0x98/0x2b8 [ 173.498187][ T7415] el0_svc_common+0x138/0x258 [ 173.498903][ T7415] do_el0_svc+0x58/0x14c [ 173.499526][ T7415] el0_svc+0x78/0x1e0 [ 173.500115][ T7415] el0t_64_sync_handler+0xcc/0xe4 [ 173.500832][ T7415] el0t_64_sync+0x1a0/0x1a4 [ 173.522533][ T7415] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 173.524594][ T7415] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 173.530512][ T7415] syz.0.812 (7415): drop_caches: 2 [ 173.542758][ T7413] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 173.543866][ T7413] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 173.545951][ T7413] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 173.547681][ T4857] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 173.548717][ T4857] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 173.577943][ T4857] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 29ms [ 173.580633][ T4857] gfs2: fsid=syz:syz.0: jid=0: Done [ 173.581501][ T7413] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 173.585481][ T7413] syz.1.811 (7413): drop_caches: 2 [ 173.589127][ T7419] loop3: detected capacity change from 0 to 32768 [ 173.662814][ T7419] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 173.664144][ T7419] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 173.666312][ T7419] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 173.667999][ T4159] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 173.669075][ T4159] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 173.693685][ T4159] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 24ms [ 173.694976][ T4159] gfs2: fsid=syz:syz.0: jid=0: Done [ 173.695836][ T7419] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 173.699223][ T7419] syz.3.814 (7419): drop_caches: 2 [ 173.748116][ T7425] loop4: detected capacity change from 0 to 32768 [ 173.810550][ T7421] loop2: detected capacity change from 0 to 32768 [ 173.830080][ T7425] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 173.831266][ T7425] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 173.833152][ T7421] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 173.834221][ T7421] CPU: 0 PID: 7421 Comm: syz.2.816 Tainted: G B syzkaller #0 [ 173.835548][ T7421] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 173.837044][ T7421] Call trace: [ 173.837628][ T7421] dump_backtrace+0x0/0x43c [ 173.838325][ T7421] show_stack+0x2c/0x3c [ 173.838867][ T7421] __dump_stack+0x30/0x40 [ 173.839495][ T7421] dump_stack_lvl+0xf8/0x160 [ 173.840105][ T7421] dump_stack+0x1c/0x5c [ 173.840676][ T7421] sysfs_create_dir_ns+0x22c/0x24c [ 173.841404][ T7421] kobject_add_internal+0x590/0xc54 [ 173.842159][ T7421] kobject_init_and_add+0x118/0x17c [ 173.842882][ T7421] gfs2_sys_fs_add+0x1dc/0x3d8 [ 173.843558][ T7421] gfs2_fill_super+0xdac/0x19e0 [ 173.844347][ T7421] get_tree_bdev+0x358/0x544 [ 173.845000][ T7421] gfs2_get_tree+0x54/0x1b4 [ 173.845675][ T7421] vfs_get_tree+0x90/0x274 [ 173.846327][ T7421] do_new_mount+0x228/0x810 [ 173.846956][ T7421] path_mount+0x5b4/0x1000 [ 173.847584][ T7421] __arm64_sys_mount+0x514/0x5e4 [ 173.848242][ T7421] invoke_syscall+0x98/0x2b8 [ 173.848900][ T7421] el0_svc_common+0x138/0x258 [ 173.849572][ T7421] do_el0_svc+0x58/0x14c [ 173.850187][ T7421] el0_svc+0x78/0x1e0 [ 173.850727][ T7421] el0t_64_sync_handler+0xcc/0xe4 [ 173.851449][ T7421] el0t_64_sync+0x1a0/0x1a4 [ 173.855737][ T7425] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 173.860105][ T4857] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 173.861128][ T4857] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 173.882966][ T4857] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 21ms [ 173.884158][ T4857] gfs2: fsid=syz:syz.0: jid=0: Done [ 173.889101][ T7425] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 173.893148][ T7425] syz.4.815 (7425): drop_caches: 2 [ 173.901651][ T7423] loop0: detected capacity change from 0 to 32768 [ 173.906930][ T7421] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 173.908813][ T7421] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 173.910770][ T7421] syz.2.816 (7421): drop_caches: 2 [ 173.941006][ T7427] loop1: detected capacity change from 0 to 32768 [ 173.951186][ T7423] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 173.952492][ T7423] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 173.955491][ T7423] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 173.957405][ T4156] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 173.958408][ T4156] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 173.974210][ T7429] loop3: detected capacity change from 0 to 32768 [ 173.976447][ T7427] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 173.977432][ T7427] CPU: 0 PID: 7427 Comm: syz.1.818 Tainted: G B syzkaller #0 [ 173.978652][ T7427] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 173.978680][ T4156] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 20ms [ 173.980116][ T7427] Call trace: [ 173.980123][ T7427] dump_backtrace+0x0/0x43c [ 173.980142][ T7427] show_stack+0x2c/0x3c [ 173.980152][ T7427] __dump_stack+0x30/0x40 [ 173.980162][ T7427] dump_stack_lvl+0xf8/0x160 [ 173.980168][ T7427] dump_stack+0x1c/0x5c [ 173.980173][ T7427] sysfs_create_dir_ns+0x22c/0x24c [ 173.981469][ T4156] gfs2: fsid=syz:syz.0: jid=0: Done [ 173.981812][ T7427] kobject_add_internal+0x590/0xc54 [ 173.982532][ T7423] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 173.983170][ T7427] kobject_init_and_add+0x118/0x17c [ 173.988978][ T7427] gfs2_sys_fs_add+0x1dc/0x3d8 [ 173.989761][ T7427] gfs2_fill_super+0xdac/0x19e0 [ 173.990566][ T7427] get_tree_bdev+0x358/0x544 [ 173.991295][ T7427] gfs2_get_tree+0x54/0x1b4 [ 173.992007][ T7427] vfs_get_tree+0x90/0x274 [ 173.992734][ T7427] do_new_mount+0x228/0x810 [ 173.993389][ T7427] path_mount+0x5b4/0x1000 [ 173.994038][ T7427] __arm64_sys_mount+0x514/0x5e4 [ 173.994710][ T7427] invoke_syscall+0x98/0x2b8 [ 173.995353][ T7427] el0_svc_common+0x138/0x258 [ 173.996019][ T7427] do_el0_svc+0x58/0x14c [ 173.996633][ T7427] el0_svc+0x78/0x1e0 [ 173.997254][ T7427] el0t_64_sync_handler+0xcc/0xe4 [ 173.997944][ T7427] el0t_64_sync+0x1a0/0x1a4 [ 174.002421][ T7429] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 174.003593][ T7429] CPU: 1 PID: 7429 Comm: syz.3.819 Tainted: G B syzkaller #0 [ 174.004943][ T7429] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 174.006397][ T7429] Call trace: [ 174.006847][ T7429] dump_backtrace+0x0/0x43c [ 174.007500][ T7429] show_stack+0x2c/0x3c [ 174.008082][ T7429] __dump_stack+0x30/0x40 [ 174.008704][ T7429] dump_stack_lvl+0xf8/0x160 [ 174.009388][ T7429] dump_stack+0x1c/0x5c [ 174.010008][ T7429] sysfs_create_dir_ns+0x22c/0x24c [ 174.010766][ T7429] kobject_add_internal+0x590/0xc54 [ 174.011590][ T7429] kobject_init_and_add+0x118/0x17c [ 174.012400][ T7429] gfs2_sys_fs_add+0x1dc/0x3d8 [ 174.013108][ T7429] gfs2_fill_super+0xdac/0x19e0 [ 174.013843][ T7429] get_tree_bdev+0x358/0x544 [ 174.014531][ T7429] gfs2_get_tree+0x54/0x1b4 [ 174.015296][ T7429] vfs_get_tree+0x90/0x274 [ 174.015950][ T7429] do_new_mount+0x228/0x810 [ 174.016693][ T7429] path_mount+0x5b4/0x1000 [ 174.017352][ T7429] __arm64_sys_mount+0x514/0x5e4 [ 174.018061][ T7429] invoke_syscall+0x98/0x2b8 [ 174.018736][ T7429] el0_svc_common+0x138/0x258 [ 174.019400][ T7429] do_el0_svc+0x58/0x14c [ 174.020034][ T7429] el0_svc+0x78/0x1e0 [ 174.020623][ T7429] el0t_64_sync_handler+0xcc/0xe4 [ 174.021403][ T7429] el0t_64_sync+0x1a0/0x1a4 [ 174.026637][ T7423] syz.0.817 (7423): drop_caches: 2 [ 174.030442][ T7429] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 174.032287][ T7429] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 174.034038][ T7427] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 174.035862][ T7427] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 174.123385][ T7429] syz.3.819 (7429): drop_caches: 2 [ 174.130028][ T7427] syz.1.818 (7427): drop_caches: 2 [ 174.227652][ T7431] loop2: detected capacity change from 0 to 32768 [ 174.244024][ T7433] loop4: detected capacity change from 0 to 32768 [ 174.286697][ T7433] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 174.287849][ T7433] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 174.289083][ T7431] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 174.290287][ T7431] CPU: 0 PID: 7431 Comm: syz.2.821 Tainted: G B syzkaller #0 [ 174.291614][ T7431] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 174.293063][ T7431] Call trace: [ 174.293513][ T7431] dump_backtrace+0x0/0x43c [ 174.294164][ T7431] show_stack+0x2c/0x3c [ 174.294793][ T7431] __dump_stack+0x30/0x40 [ 174.295412][ T7431] dump_stack_lvl+0xf8/0x160 [ 174.296198][ T7431] dump_stack+0x1c/0x5c [ 174.296909][ T7431] sysfs_create_dir_ns+0x22c/0x24c [ 174.297785][ T7431] kobject_add_internal+0x590/0xc54 [ 174.298634][ T7431] kobject_init_and_add+0x118/0x17c [ 174.299440][ T7431] gfs2_sys_fs_add+0x1dc/0x3d8 [ 174.300133][ T7431] gfs2_fill_super+0xdac/0x19e0 [ 174.300895][ T7431] get_tree_bdev+0x358/0x544 [ 174.301592][ T7431] gfs2_get_tree+0x54/0x1b4 [ 174.302280][ T7431] vfs_get_tree+0x90/0x274 [ 174.303017][ T7431] do_new_mount+0x228/0x810 [ 174.303650][ T7431] path_mount+0x5b4/0x1000 [ 174.304322][ T7431] __arm64_sys_mount+0x514/0x5e4 [ 174.304979][ T7431] invoke_syscall+0x98/0x2b8 [ 174.305633][ T7431] el0_svc_common+0x138/0x258 [ 174.306286][ T7431] do_el0_svc+0x58/0x14c [ 174.306895][ T7431] el0_svc+0x78/0x1e0 [ 174.307435][ T7431] el0t_64_sync_handler+0xcc/0xe4 [ 174.308137][ T7431] el0t_64_sync+0x1a0/0x1a4 [ 174.312355][ T7433] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 174.319599][ T4857] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 174.320494][ T4857] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 174.337177][ T7435] loop0: detected capacity change from 0 to 32768