nal+0x5a8/0xb30 [ 96.871301][ T5268] kobject_init_and_add+0x118/0x17c [ 96.872209][ T5268] gfs2_sys_fs_add+0x1dc/0x3d8 [ 96.873014][ T5268] gfs2_fill_super+0xdec/0x19ec [ 96.873806][ T5268] get_tree_bdev+0x358/0x544 [ 96.874563][ T5268] gfs2_get_tree+0x54/0x1b4 [ 96.875321][ T5268] vfs_get_tree+0x90/0x274 [ 96.876017][ T5268] do_new_mount+0x228/0x810 [ 96.876768][ T5268] path_mount+0x5b4/0xe78 [ 96.877467][ T5268] __arm64_sys_mount+0x49c/0x584 [ 96.878326][ T5268] invoke_syscall+0x98/0x2bc [ 96.879052][ T5268] el0_svc_common+0x138/0x258 [ 96.879790][ T5268] do_el0_svc+0x58/0x13c [ 96.880482][ T5268] el0_svc+0x58/0x138 [ 96.881111][ T5268] el0t_64_sync_handler+0x84/0xf0 [ 96.881987][ T5268] el0t_64_sync+0x18c/0x190 [ 96.882829][ T5268] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 96.884922][ T5268] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 96.971470][ T5270] loop3: detected capacity change from 0 to 32768 [ 97.040174][ T4442] gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485 [ 97.042559][ T4442] CPU: 1 PID: 4442 Comm: syz-executor Not tainted syzkaller #0 [ 97.043752][ T4442] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 97.045308][ T4442] Call trace: [ 97.045835][ T4442] dump_backtrace+0x1c8/0x1f4 [ 97.046536][ T4442] show_stack+0x2c/0x3c [ 97.047249][ T4442] __dump_stack+0x30/0x40 [ 97.047970][ T4442] dump_stack_lvl+0xf8/0x160 [ 97.048730][ T4442] dump_stack+0x1c/0x5c [ 97.049401][ T4442] gfs2_assert_warn_i+0x16c/0x26c [ 97.050231][ T4442] gfs2_quota_cleanup+0x454/0x65c [ 97.051035][ T4442] gfs2_make_fs_ro+0x358/0x430 [ 97.051784][ T4442] gfs2_put_super+0x1e0/0x764 [ 97.052525][ T4442] generic_shutdown_super+0x130/0x324 [ 97.053391][ T4442] kill_block_super+0x70/0xdc [ 97.054096][ T4442] gfs2_kill_sb+0xc0/0xd4 [ 97.054843][ T4442] deactivate_locked_super+0xac/0x124 [ 97.055630][ T4442] deactivate_super+0xe8/0x108 [ 97.056321][ T4442] cleanup_mnt+0x37c/0x404 [ 97.057005][ T4442] __cleanup_mnt+0x20/0x30 [ 97.057677][ T4442] task_work_run+0x1ec/0x270 [ 97.058479][ T4442] do_notify_resume+0x1f70/0x2b0c [ 97.059346][ T4442] el0_svc+0x98/0x138 [ 97.060020][ T4442] el0t_64_sync_handler+0x84/0xf0 [ 97.060843][ T4442] el0t_64_sync+0x18c/0x190 [ 97.097196][ T4464] I/O error, dev loop2, sector 32640 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 97.132310][ T5270] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 97.133517][ T5270] CPU: 1 PID: 5270 Comm: syz.3.302 Not tainted syzkaller #0 [ 97.134674][ T5270] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 97.136398][ T5270] Call trace: [ 97.136951][ T5270] dump_backtrace+0x1c8/0x1f4 [ 97.137709][ T5270] show_stack+0x2c/0x3c [ 97.138378][ T5270] __dump_stack+0x30/0x40 [ 97.139078][ T5270] dump_stack_lvl+0xf8/0x160 [ 97.139817][ T5270] dump_stack+0x1c/0x5c [ 97.140462][ T5270] sysfs_create_dir_ns+0x22c/0x24c [ 97.141261][ T5270] kobject_add_internal+0x5a8/0xb30 [ 97.142071][ T5270] kobject_init_and_add+0x118/0x17c [ 97.142885][ T5270] gfs2_sys_fs_add+0x1dc/0x3d8 [ 97.143629][ T5270] gfs2_fill_super+0xdec/0x19ec [ 97.144361][ T5270] get_tree_bdev+0x358/0x544 [ 97.145067][ T5270] gfs2_get_tree+0x54/0x1b4 [ 97.145843][ T5270] vfs_get_tree+0x90/0x274 [ 97.146547][ T5270] do_new_mount+0x228/0x810 [ 97.147254][ T5270] path_mount+0x5b4/0xe78 [ 97.147930][ T5270] __arm64_sys_mount+0x49c/0x584 [ 97.148687][ T5270] invoke_syscall+0x98/0x2bc [ 97.149426][ T5270] el0_svc_common+0x138/0x258 [ 97.150176][ T5270] do_el0_svc+0x58/0x13c [ 97.150909][ T5270] el0_svc+0x58/0x138 [ 97.151509][ T5270] el0t_64_sync_handler+0x84/0xf0 [ 97.152294][ T5270] el0t_64_sync+0x18c/0x190 [ 97.153096][ T5270] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 97.154912][ T5270] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 97.180478][ T5272] loop4: detected capacity change from 0 to 32768 [ 97.194979][ T5272] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 97.196277][ T5272] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 97.198599][ T5272] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms [ 97.200345][ T4427] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 97.201378][ T4427] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 97.366584][ T5274] loop0: detected capacity change from 0 to 32768 [ 97.394856][ T5276] loop1: detected capacity change from 0 to 32768 [ 97.400742][ T5274] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 97.401893][ T5274] CPU: 1 PID: 5274 Comm: syz.0.305 Not tainted syzkaller #0 [ 97.402966][ T5274] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 97.404593][ T5274] Call trace: [ 97.405104][ T5274] dump_backtrace+0x1c8/0x1f4 [ 97.405840][ T5274] show_stack+0x2c/0x3c [ 97.406470][ T5274] __dump_stack+0x30/0x40 [ 97.407188][ T5274] dump_stack_lvl+0xf8/0x160 [ 97.407927][ T5274] dump_stack+0x1c/0x5c [ 97.408593][ T5274] sysfs_create_dir_ns+0x22c/0x24c [ 97.409369][ T5274] kobject_add_internal+0x5a8/0xb30 [ 97.410156][ T5274] kobject_init_and_add+0x118/0x17c [ 97.410944][ T5274] gfs2_sys_fs_add+0x1dc/0x3d8 [ 97.411685][ T5274] gfs2_fill_super+0xdec/0x19ec [ 97.412427][ T5274] get_tree_bdev+0x358/0x544 [ 97.413112][ T5274] gfs2_get_tree+0x54/0x1b4 [ 97.413891][ T5274] vfs_get_tree+0x90/0x274 [ 97.414551][ T5274] do_new_mount+0x228/0x810 [ 97.415287][ T5274] path_mount+0x5b4/0xe78 [ 97.415952][ T5274] __arm64_sys_mount+0x49c/0x584 [ 97.416687][ T5274] invoke_syscall+0x98/0x2bc [ 97.417392][ T5274] el0_svc_common+0x138/0x258 [ 97.418104][ T5274] do_el0_svc+0x58/0x13c [ 97.418842][ T5274] el0_svc+0x58/0x138 [ 97.419482][ T5274] el0t_64_sync_handler+0x84/0xf0 [ 97.420459][ T5274] el0t_64_sync+0x18c/0x190 [ 97.421337][ T5274] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 97.423523][ T5274] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 97.427097][ T5276] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 97.428275][ T5276] CPU: 1 PID: 5276 Comm: syz.1.303 Not tainted syzkaller #0 [ 97.429341][ T5276] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 97.430831][ T5276] Call trace: [ 97.431272][ T5276] dump_backtrace+0x1c8/0x1f4 [ 97.432017][ T5276] show_stack+0x2c/0x3c [ 97.432690][ T5276] __dump_stack+0x30/0x40 [ 97.433380][ T5276] dump_stack_lvl+0xf8/0x160 [ 97.434079][ T5276] dump_stack+0x1c/0x5c [ 97.434717][ T5276] sysfs_create_dir_ns+0x22c/0x24c [ 97.435506][ T5276] kobject_add_internal+0x5a8/0xb30 [ 97.436313][ T5276] kobject_init_and_add+0x118/0x17c [ 97.437082][ T5276] gfs2_sys_fs_add+0x1dc/0x3d8 [ 97.437898][ T5276] gfs2_fill_super+0xdec/0x19ec [ 97.438748][ T5276] get_tree_bdev+0x358/0x544 [ 97.439508][ T5276] gfs2_get_tree+0x54/0x1b4 [ 97.440210][ T5276] vfs_get_tree+0x90/0x274 [ 97.440859][ T5276] do_new_mount+0x228/0x810 [ 97.441644][ T5276] path_mount+0x5b4/0xe78 [ 97.442335][ T5276] __arm64_sys_mount+0x49c/0x584 [ 97.443119][ T5276] invoke_syscall+0x98/0x2bc [ 97.443820][ T5276] el0_svc_common+0x138/0x258 [ 97.444637][ T5276] do_el0_svc+0x58/0x13c [ 97.445362][ T5276] el0_svc+0x58/0x138 [ 97.446019][ T5276] el0t_64_sync_handler+0x84/0xf0 [ 97.446893][ T5276] el0t_64_sync+0x18c/0x190 [ 97.447698][ T5276] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 97.448711][ T4427] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 247ms [ 97.449870][ T5276] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 97.555130][ T5278] loop2: detected capacity change from 0 to 32768 [ 97.557040][ T5278] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 97.558199][ T5278] CPU: 0 PID: 5278 Comm: syz.2.306 Not tainted syzkaller #0 [ 97.559307][ T5278] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 97.560867][ T5278] Call trace: [ 97.561400][ T5278] dump_backtrace+0x1c8/0x1f4 [ 97.562203][ T5278] show_stack+0x2c/0x3c [ 97.562849][ T5278] __dump_stack+0x30/0x40 [ 97.563541][ T5278] dump_stack_lvl+0xf8/0x160 [ 97.564284][ T5278] dump_stack+0x1c/0x5c [ 97.564947][ T5278] sysfs_create_dir_ns+0x22c/0x24c [ 97.565789][ T5278] kobject_add_internal+0x5a8/0xb30 [ 97.566669][ T5278] kobject_init_and_add+0x118/0x17c [ 97.567455][ T5278] gfs2_sys_fs_add+0x1dc/0x3d8 [ 97.568248][ T5278] gfs2_fill_super+0xdec/0x19ec [ 97.569072][ T5278] get_tree_bdev+0x358/0x544 [ 97.569875][ T5278] gfs2_get_tree+0x54/0x1b4 [ 97.570592][ T5278] vfs_get_tree+0x90/0x274 [ 97.571362][ T5278] do_new_mount+0x228/0x810 [ 97.572117][ T5278] path_mount+0x5b4/0xe78 [ 97.572879][ T5278] __arm64_sys_mount+0x49c/0x584 [ 97.573668][ T5278] invoke_syscall+0x98/0x2bc [ 97.574470][ T5278] el0_svc_common+0x138/0x258 [ 97.575216][ T5278] do_el0_svc+0x58/0x13c [ 97.575943][ T5278] el0_svc+0x58/0x138 [ 97.576603][ T5278] el0t_64_sync_handler+0x84/0xf0 [ 97.577419][ T5278] el0t_64_sync+0x18c/0x190 [ 97.578984][ T5278] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 97.581057][ T5278] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 97.582988][ T4427] gfs2: fsid=syz:syz.0: jid=0: Done [ 97.583858][ T5272] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 97.712316][ T4525] I/O error, dev loop3, sector 32640 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 97.729798][ T5132] I/O error, dev loop0, sector 32640 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 97.845401][ T5282] loop0: detected capacity change from 0 to 32768 [ 97.867611][ T5272] gfs2: fsid=syz:syz.0: found 1 quota changes [ 97.908280][ T5282] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 97.909503][ T5282] CPU: 0 PID: 5282 Comm: syz.0.307 Not tainted syzkaller #0 [ 97.910649][ T5282] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 97.912247][ T5282] Call trace: [ 97.912739][ T5282] dump_backtrace+0x1c8/0x1f4 [ 97.913532][ T5282] show_stack+0x2c/0x3c [ 97.914222][ T5282] __dump_stack+0x30/0x40 [ 97.914936][ T5282] dump_stack_lvl+0xf8/0x160 [ 97.915687][ T5282] dump_stack+0x1c/0x5c [ 97.916305][ T5282] sysfs_create_dir_ns+0x22c/0x24c [ 97.917044][ T5282] kobject_add_internal+0x5a8/0xb30 [ 97.917785][ T5282] kobject_init_and_add+0x118/0x17c [ 97.918526][ T5282] gfs2_sys_fs_add+0x1dc/0x3d8 [ 97.919222][ T5282] gfs2_fill_super+0xdec/0x19ec [ 97.919901][ T5282] get_tree_bdev+0x358/0x544 [ 97.920581][ T5282] gfs2_get_tree+0x54/0x1b4 [ 97.921247][ T5282] vfs_get_tree+0x90/0x274 [ 97.921990][ T5282] do_new_mount+0x228/0x810 [ 97.922691][ T5282] path_mount+0x5b4/0xe78 [ 97.923387][ T5282] __arm64_sys_mount+0x49c/0x584 [ 97.924152][ T5282] invoke_syscall+0x98/0x2bc [ 97.924824][ T5282] el0_svc_common+0x138/0x258 [ 97.925553][ T5282] do_el0_svc+0x58/0x13c [ 97.926210][ T5282] el0_svc+0x58/0x138 [ 97.926880][ T5282] el0t_64_sync_handler+0x84/0xf0 [ 97.927709][ T5282] el0t_64_sync+0x18c/0x190 [ 97.928702][ T5282] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 97.930726][ T5282] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 97.952052][ T5284] loop3: detected capacity change from 0 to 32768 [ 97.954065][ T5284] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 97.955146][ T5284] CPU: 1 PID: 5284 Comm: syz.3.308 Not tainted syzkaller #0 [ 97.956389][ T5284] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 97.957900][ T5284] Call trace: [ 97.958396][ T5284] dump_backtrace+0x1c8/0x1f4 [ 97.959123][ T5284] show_stack+0x2c/0x3c [ 97.959752][ T5284] __dump_stack+0x30/0x40 [ 97.960404][ T5284] dump_stack_lvl+0xf8/0x160 [ 97.961122][ T5284] dump_stack+0x1c/0x5c [ 97.961773][ T5284] sysfs_create_dir_ns+0x22c/0x24c [ 97.962635][ T5284] kobject_add_internal+0x5a8/0xb30 [ 97.963461][ T5284] kobject_init_and_add+0x118/0x17c [ 97.964323][ T5284] gfs2_sys_fs_add+0x1dc/0x3d8 [ 97.965066][ T5284] gfs2_fill_super+0xdec/0x19ec [ 97.965836][ T5284] get_tree_bdev+0x358/0x544 [ 97.966538][ T5284] gfs2_get_tree+0x54/0x1b4 [ 97.967246][ T5284] vfs_get_tree+0x90/0x274 [ 97.967968][ T5284] do_new_mount+0x228/0x810 [ 97.968679][ T5284] path_mount+0x5b4/0xe78 [ 97.969355][ T5284] __arm64_sys_mount+0x49c/0x584 [ 97.970067][ T5284] invoke_syscall+0x98/0x2bc [ 97.970845][ T5284] el0_svc_common+0x138/0x258 [ 97.971607][ T5284] do_el0_svc+0x58/0x13c [ 97.972372][ T5284] el0_svc+0x58/0x138 [ 97.973054][ T5284] el0t_64_sync_handler+0x84/0xf0 [ 97.973878][ T5284] el0t_64_sync+0x18c/0x190 [ 97.974708][ T5284] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 97.976811][ T5284] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 97.979326][ T4347] I/O error, dev loop1, sector 32640 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 98.275390][ T4525] I/O error, dev loop3, sector 32640 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 98.306955][ T4454] gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485 [ 98.309145][ T4454] CPU: 0 PID: 4454 Comm: syz-executor Not tainted syzkaller #0 [ 98.310359][ T4454] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 98.311888][ T4454] Call trace: [ 98.312426][ T4454] dump_backtrace+0x1c8/0x1f4 [ 98.313220][ T4454] show_stack+0x2c/0x3c [ 98.313896][ T4454] __dump_stack+0x30/0x40 [ 98.314601][ T4454] dump_stack_lvl+0xf8/0x160 [ 98.315299][ T4454] dump_stack+0x1c/0x5c [ 98.315991][ T4454] gfs2_assert_warn_i+0x16c/0x26c [ 98.316766][ T4454] gfs2_quota_cleanup+0x454/0x65c [ 98.317564][ T4454] gfs2_make_fs_ro+0x358/0x430 [ 98.318292][ T4454] gfs2_put_super+0x1e0/0x764 [ 98.319021][ T4454] generic_shutdown_super+0x130/0x324 [ 98.319831][ T4454] kill_block_super+0x70/0xdc [ 98.320536][ T4454] gfs2_kill_sb+0xc0/0xd4 [ 98.321191][ T4454] deactivate_locked_super+0xac/0x124 [ 98.321992][ T4454] deactivate_super+0xe8/0x108 [ 98.322725][ T4454] cleanup_mnt+0x37c/0x404 [ 98.323394][ T4454] __cleanup_mnt+0x20/0x30 [ 98.324041][ T4454] task_work_run+0x1ec/0x270 [ 98.324701][ T4454] do_notify_resume+0x1f70/0x2b0c [ 98.325500][ T4454] el0_svc+0x98/0x138 [ 98.326066][ T4454] el0t_64_sync_handler+0x84/0xf0 [ 98.326828][ T4454] el0t_64_sync+0x18c/0x190 [ 98.527952][ T5294] loop0: detected capacity change from 0 to 32768 [ 98.532094][ T5296] loop4: detected capacity change from 0 to 32768 [ 98.539179][ T5296] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 98.539227][ T5294] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 98.540422][ T5296] CPU: 0 PID: 5296 Comm: syz.4.312 Not tainted syzkaller #0 [ 98.541694][ T5294] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 98.542705][ T5296] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 98.545189][ T5296] Call trace: [ 98.545713][ T5296] dump_backtrace+0x1c8/0x1f4 [ 98.546550][ T5296] show_stack+0x2c/0x3c [ 98.547195][ T5296] __dump_stack+0x30/0x40 [ 98.547885][ T5296] dump_stack_lvl+0xf8/0x160 [ 98.548575][ T5296] dump_stack+0x1c/0x5c [ 98.549229][ T5296] sysfs_create_dir_ns+0x22c/0x24c [ 98.549998][ T5296] kobject_add_internal+0x5a8/0xb30 [ 98.550810][ T5296] kobject_init_and_add+0x118/0x17c [ 98.551697][ T5296] gfs2_sys_fs_add+0x1dc/0x3d8 [ 98.552519][ T5296] gfs2_fill_super+0xdec/0x19ec [ 98.553397][ T5296] get_tree_bdev+0x358/0x544 [ 98.554243][ T5296] gfs2_get_tree+0x54/0x1b4 [ 98.555018][ T5296] vfs_get_tree+0x90/0x274 [ 98.555800][ T5296] do_new_mount+0x228/0x810 [ 98.556533][ T5296] path_mount+0x5b4/0xe78 [ 98.557206][ T5296] __arm64_sys_mount+0x49c/0x584 [ 98.558066][ T5296] invoke_syscall+0x98/0x2bc [ 98.558868][ T5296] el0_svc_common+0x138/0x258 [ 98.559690][ T5296] do_el0_svc+0x58/0x13c [ 98.560359][ T5296] el0_svc+0x58/0x138 [ 98.561038][ T5296] el0t_64_sync_handler+0x84/0xf0 [ 98.561872][ T5296] el0t_64_sync+0x18c/0x190 [ 98.562772][ T5296] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 98.565000][ T5296] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 98.602971][ T5294] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms [ 98.604825][ T4503] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 98.605914][ T4503] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 98.647444][ T4503] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 41ms [ 98.648720][ T4503] gfs2: fsid=syz:syz.0: jid=0: Done [ 98.748179][ T5288] loop1: detected capacity change from 0 to 32768 [ 98.749797][ T5288] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 98.750884][ T5288] CPU: 0 PID: 5288 Comm: syz.1.310 Not tainted syzkaller #0 [ 98.751974][ T5288] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 98.753516][ T5288] Call trace: [ 98.753999][ T5288] dump_backtrace+0x1c8/0x1f4 [ 98.754679][ T5288] show_stack+0x2c/0x3c [ 98.755298][ T5288] __dump_stack+0x30/0x40 [ 98.755941][ T5288] dump_stack_lvl+0xf8/0x160 [ 98.756620][ T5288] dump_stack+0x1c/0x5c [ 98.757339][ T5288] sysfs_create_dir_ns+0x22c/0x24c [ 98.758081][ T5288] kobject_add_internal+0x5a8/0xb30 [ 98.758878][ T5288] kobject_init_and_add+0x118/0x17c [ 98.759606][ T5288] gfs2_sys_fs_add+0x1dc/0x3d8 [ 98.760338][ T5288] gfs2_fill_super+0xdec/0x19ec [ 98.761091][ T5288] get_tree_bdev+0x358/0x544 [ 98.761826][ T5288] gfs2_get_tree+0x54/0x1b4 [ 98.762581][ T5288] vfs_get_tree+0x90/0x274 [ 98.763321][ T5288] do_new_mount+0x228/0x810 [ 98.764037][ T5288] path_mount+0x5b4/0xe78 [ 98.764703][ T5288] __arm64_sys_mount+0x49c/0x584 [ 98.765447][ T5288] invoke_syscall+0x98/0x2bc [ 98.766126][ T5288] el0_svc_common+0x138/0x258 [ 98.766852][ T5288] do_el0_svc+0x58/0x13c [ 98.767525][ T5288] el0_svc+0x58/0x138 [ 98.768138][ T5288] el0t_64_sync_handler+0x84/0xf0 [ 98.768862][ T5288] el0t_64_sync+0x18c/0x190 [ 98.818287][ T5301] loop3: detected capacity change from 0 to 32768 [ 98.820030][ T5294] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 98.857614][ T5301] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 98.858843][ T5301] CPU: 1 PID: 5301 Comm: syz.3.315 Not tainted syzkaller #0 [ 98.859951][ T5301] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 98.861453][ T5301] Call trace: [ 98.861987][ T5301] dump_backtrace+0x1c8/0x1f4 [ 98.862791][ T5301] show_stack+0x2c/0x3c [ 98.863502][ T5301] __dump_stack+0x30/0x40 [ 98.864206][ T5301] dump_stack_lvl+0xf8/0x160 [ 98.864915][ T5301] dump_stack+0x1c/0x5c [ 98.865639][ T5301] sysfs_create_dir_ns+0x22c/0x24c [ 98.866494][ T5301] kobject_add_internal+0x5a8/0xb30 [ 98.867323][ T5301] kobject_init_and_add+0x118/0x17c [ 98.868131][ T5301] gfs2_sys_fs_add+0x1dc/0x3d8 [ 98.868891][ T5301] gfs2_fill_super+0xdec/0x19ec [ 98.869728][ T5301] get_tree_bdev+0x358/0x544 [ 98.870402][ T5301] gfs2_get_tree+0x54/0x1b4 [ 98.871103][ T5301] vfs_get_tree+0x90/0x274 [ 98.871817][ T5301] do_new_mount+0x228/0x810 [ 98.872508][ T5301] path_mount+0x5b4/0xe78 [ 98.873241][ T5301] __arm64_sys_mount+0x49c/0x584 [ 98.874028][ T5301] invoke_syscall+0x98/0x2bc [ 98.874794][ T5301] el0_svc_common+0x138/0x258 [ 98.875509][ T5301] do_el0_svc+0x58/0x13c [ 98.876186][ T5301] el0_svc+0x58/0x138 [ 98.876877][ T5301] el0t_64_sync_handler+0x84/0xf0 [ 98.877725][ T5301] el0t_64_sync+0x18c/0x190 [ 98.878598][ T5301] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 98.880566][ T5301] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 98.944273][ T5288] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 98.956640][ T5288] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 98.959211][ T5303] loop4: detected capacity change from 0 to 32768 [ 98.961349][ T5303] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 98.963451][ T5303] CPU: 0 PID: 5303 Comm: syz.4.316 Not tainted syzkaller #0 [ 98.964566][ T5303] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 98.966118][ T5303] Call trace: [ 98.966609][ T5303] dump_backtrace+0x1c8/0x1f4 [ 98.967297][ T5303] show_stack+0x2c/0x3c [ 98.967907][ T5303] __dump_stack+0x30/0x40 [ 98.968535][ T5303] dump_stack_lvl+0xf8/0x160 [ 98.969266][ T5303] dump_stack+0x1c/0x5c [ 98.969943][ T5303] sysfs_create_dir_ns+0x22c/0x24c [ 98.970700][ T5303] kobject_add_internal+0x5a8/0xb30 [ 98.971478][ T5303] kobject_init_and_add+0x118/0x17c [ 98.972273][ T5303] gfs2_sys_fs_add+0x1dc/0x3d8 [ 98.972986][ T5303] gfs2_fill_super+0xdec/0x19ec [ 98.973702][ T5303] get_tree_bdev+0x358/0x544 [ 98.974370][ T5303] gfs2_get_tree+0x54/0x1b4 [ 98.975114][ T5303] vfs_get_tree+0x90/0x274 [ 98.975794][ T5303] do_new_mount+0x228/0x810 [ 98.976452][ T5303] path_mount+0x5b4/0xe78 [ 98.977080][ T5303] __arm64_sys_mount+0x49c/0x584 [ 98.977813][ T5303] invoke_syscall+0x98/0x2bc [ 98.978515][ T5303] el0_svc_common+0x138/0x258 [ 98.979248][ T5303] do_el0_svc+0x58/0x13c [ 98.979898][ T5303] el0_svc+0x58/0x138 [ 98.980508][ T5303] el0t_64_sync_handler+0x84/0xf0 [ 98.981330][ T5303] el0t_64_sync+0x18c/0x190 [ 98.982141][ T5303] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 98.984095][ T5303] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 99.098390][ T5294] gfs2: fsid=syz:syz.0: found 1 quota changes [ 99.259313][ T5307] loop3: detected capacity change from 0 to 32768 [ 99.337946][ T5309] loop4: detected capacity change from 0 to 32768 [ 99.344524][ T5307] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 99.345693][ T5307] CPU: 0 PID: 5307 Comm: syz.3.317 Not tainted syzkaller #0 [ 99.346801][ T5307] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 99.348330][ T5307] Call trace: [ 99.348806][ T5307] dump_backtrace+0x1c8/0x1f4 [ 99.349505][ T5307] show_stack+0x2c/0x3c [ 99.350130][ T5307] __dump_stack+0x30/0x40 [ 99.350802][ T5307] dump_stack_lvl+0xf8/0x160 [ 99.351512][ T5307] dump_stack+0x1c/0x5c [ 99.352154][ T5307] sysfs_create_dir_ns+0x22c/0x24c [ 99.353047][ T5307] kobject_add_internal+0x5a8/0xb30 [ 99.353953][ T5307] kobject_init_and_add+0x118/0x17c [ 99.354870][ T5307] gfs2_sys_fs_add+0x1dc/0x3d8 [ 99.355634][ T5307] gfs2_fill_super+0xdec/0x19ec [ 99.356445][ T5307] get_tree_bdev+0x358/0x544 [ 99.357150][ T5307] gfs2_get_tree+0x54/0x1b4 [ 99.357830][ T5307] vfs_get_tree+0x90/0x274 [ 99.358575][ T5307] do_new_mount+0x228/0x810 [ 99.359283][ T5307] path_mount+0x5b4/0xe78 [ 99.359939][ T5307] __arm64_sys_mount+0x49c/0x584 [ 99.360646][ T5307] invoke_syscall+0x98/0x2bc [ 99.361379][ T5307] el0_svc_common+0x138/0x258 [ 99.362115][ T5307] do_el0_svc+0x58/0x13c [ 99.362814][ T5307] el0_svc+0x58/0x138 [ 99.363408][ T5307] el0t_64_sync_handler+0x84/0xf0 [ 99.364265][ T5307] el0t_64_sync+0x18c/0x190 [ 99.365107][ T5307] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 99.367347][ T5307] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 99.372391][ T5309] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 99.373637][ T5309] CPU: 0 PID: 5309 Comm: syz.4.318 Not tainted syzkaller #0 [ 99.374811][ T5309] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 99.376377][ T5309] Call trace: [ 99.376878][ T5309] dump_backtrace+0x1c8/0x1f4 [ 99.377669][ T5309] show_stack+0x2c/0x3c [ 99.378318][ T5309] __dump_stack+0x30/0x40 [ 99.379131][ T5309] dump_stack_lvl+0xf8/0x160 [ 99.379810][ T5309] dump_stack+0x1c/0x5c [ 99.380484][ T5309] sysfs_create_dir_ns+0x22c/0x24c [ 99.381309][ T5309] kobject_add_internal+0x5a8/0xb30 [ 99.382205][ T5309] kobject_init_and_add+0x118/0x17c [ 99.383092][ T5309] gfs2_sys_fs_add+0x1dc/0x3d8 [ 99.383938][ T5309] gfs2_fill_super+0xdec/0x19ec [ 99.384804][ T5309] get_tree_bdev+0x358/0x544 [ 99.385637][ T5309] gfs2_get_tree+0x54/0x1b4 [ 99.386362][ T5309] vfs_get_tree+0x90/0x274 [ 99.387019][ T5309] do_new_mount+0x228/0x810 [ 99.387678][ T5309] path_mount+0x5b4/0xe78 [ 99.388365][ T5309] __arm64_sys_mount+0x49c/0x584 [ 99.389192][ T5309] invoke_syscall+0x98/0x2bc [ 99.389860][ T5309] el0_svc_common+0x138/0x258 [ 99.390577][ T5309] do_el0_svc+0x58/0x13c [ 99.391309][ T5309] el0_svc+0x58/0x138 [ 99.391962][ T5309] el0t_64_sync_handler+0x84/0xf0 [ 99.392744][ T5309] el0t_64_sync+0x18c/0x190 [ 99.393544][ T5309] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 99.395607][ T5309] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 99.506233][ T5311] loop1: detected capacity change from 0 to 32768 [ 99.507948][ T5311] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 99.509076][ T5311] CPU: 1 PID: 5311 Comm: syz.1.319 Not tainted syzkaller #0 [ 99.510163][ T5311] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 99.511581][ T5311] Call trace: [ 99.512107][ T5311] dump_backtrace+0x1c8/0x1f4 [ 99.512923][ T5311] show_stack+0x2c/0x3c [ 99.513572][ T5311] __dump_stack+0x30/0x40 [ 99.514220][ T5311] dump_stack_lvl+0xf8/0x160 [ 99.514948][ T5311] dump_stack+0x1c/0x5c [ 99.515603][ T5311] sysfs_create_dir_ns+0x22c/0x24c [ 99.516380][ T5311] kobject_add_internal+0x5a8/0xb30 [ 99.517182][ T5311] kobject_init_and_add+0x118/0x17c [ 99.518034][ T5311] gfs2_sys_fs_add+0x1dc/0x3d8 [ 99.518817][ T5311] gfs2_fill_super+0xdec/0x19ec [ 99.519675][ T5311] get_tree_bdev+0x358/0x544 [ 99.520503][ T5311] gfs2_get_tree+0x54/0x1b4 [ 99.521277][ T5311] vfs_get_tree+0x90/0x274 [ 99.521989][ T5311] do_new_mount+0x228/0x810 [ 99.522732][ T5311] path_mount+0x5b4/0xe78 [ 99.523424][ T5311] __arm64_sys_mount+0x49c/0x584 [ 99.524244][ T5311] invoke_syscall+0x98/0x2bc [ 99.525025][ T5311] el0_svc_common+0x138/0x258 [ 99.525806][ T5311] do_el0_svc+0x58/0x13c [ 99.526520][ T5311] el0_svc+0x58/0x138 [ 99.527144][ T5311] el0t_64_sync_handler+0x84/0xf0 [ 99.527953][ T5311] el0t_64_sync+0x18c/0x190 [ 99.529363][ T5311] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 99.531417][ T5311] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 99.537101][ T4438] gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485 [ 99.539466][ T4438] CPU: 0 PID: 4438 Comm: syz-executor Not tainted syzkaller #0 [ 99.540634][ T4438] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 99.542207][ T4438] Call trace: [ 99.542758][ T4438] dump_backtrace+0x1c8/0x1f4 [ 99.543594][ T4438] show_stack+0x2c/0x3c [ 99.544383][ T4438] __dump_stack+0x30/0x40 [ 99.545110][ T4438] dump_stack_lvl+0xf8/0x160 [ 99.545896][ T4438] dump_stack+0x1c/0x5c [ 99.546633][ T4438] gfs2_assert_warn_i+0x16c/0x26c [ 99.547400][ T4438] gfs2_quota_cleanup+0x454/0x65c [ 99.548237][ T4438] gfs2_make_fs_ro+0x358/0x430 [ 99.548993][ T4438] gfs2_put_super+0x1e0/0x764 [ 99.549796][ T4438] generic_shutdown_super+0x130/0x324 [ 99.550646][ T4438] kill_block_super+0x70/0xdc [ 99.551346][ T4438] gfs2_kill_sb+0xc0/0xd4 [ 99.551966][ T4438] deactivate_locked_super+0xac/0x124 [ 99.552850][ T4438] deactivate_super+0xe8/0x108 [ 99.553652][ T4438] cleanup_mnt+0x37c/0x404 [ 99.554364][ T4438] __cleanup_mnt+0x20/0x30 [ 99.554870][ T5299] loop2: detected capacity change from 0 to 32768 [ 99.555078][ T4438] task_work_run+0x1ec/0x270 [ 99.556830][ T4438] do_notify_resume+0x1f70/0x2b0c [ 99.557657][ T4438] el0_svc+0x98/0x138 [ 99.558285][ T4438] el0t_64_sync_handler+0x84/0xf0 [ 99.559028][ T4438] el0t_64_sync+0x18c/0x190 [ 99.587491][ T5299] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 99.588697][ T5299] CPU: 1 PID: 5299 Comm: syz.2.314 Not tainted syzkaller #0 [ 99.588758][ T4464] I/O error, dev loop4, sector 32640 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 99.589864][ T5299] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 99.593061][ T5299] Call trace: [ 99.593600][ T5299] dump_backtrace+0x1c8/0x1f4 [ 99.594372][ T5299] show_stack+0x2c/0x3c [ 99.595065][ T5299] __dump_stack+0x30/0x40 [ 99.595788][ T5299] dump_stack_lvl+0xf8/0x160 [ 99.596505][ T5299] dump_stack+0x1c/0x5c [ 99.597118][ T5299] sysfs_create_dir_ns+0x22c/0x24c [ 99.597896][ T5299] kobject_add_internal+0x5a8/0xb30 [ 99.598652][ T5299] kobject_init_and_add+0x118/0x17c [ 99.599476][ T5299] gfs2_sys_fs_add+0x1dc/0x3d8 [ 99.600237][ T5299] gfs2_fill_super+0xdec/0x19ec [ 99.600983][ T5299] get_tree_bdev+0x358/0x544 [ 99.601746][ T5299] gfs2_get_tree+0x54/0x1b4 [ 99.602491][ T5299] vfs_get_tree+0x90/0x274 [ 99.603169][ T5299] do_new_mount+0x228/0x810 [ 99.603853][ T5299] path_mount+0x5b4/0xe78 [ 99.604539][ T5299] __arm64_sys_mount+0x49c/0x584 [ 99.605280][ T5299] invoke_syscall+0x98/0x2bc [ 99.606072][ T5299] el0_svc_common+0x138/0x258 [ 99.606792][ T5299] do_el0_svc+0x58/0x13c [ 99.607460][ T5299] el0_svc+0x58/0x138 [ 99.608116][ T5299] el0t_64_sync_handler+0x84/0xf0 [ 99.608946][ T5299] el0t_64_sync+0x18c/0x190 [ 99.660456][ T4347] I/O error, dev loop1, sector 32640 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 99.756661][ T5299] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 99.758605][ T5299] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 99.868952][ T5316] loop4: detected capacity change from 0 to 32768 [ 99.981335][ T5316] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 99.982737][ T5316] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 100.088841][ T5317] loop0: detected capacity change from 0 to 32768 [ 100.140242][ T5321] loop3: detected capacity change from 0 to 32768 [ 100.147384][ T5321] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 100.148647][ T5321] CPU: 1 PID: 5321 Comm: syz.3.324 Not tainted syzkaller #0 [ 100.149718][ T5321] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 100.151267][ T5321] Call trace: [ 100.151830][ T5321] dump_backtrace+0x1c8/0x1f4 [ 100.152579][ T5321] show_stack+0x2c/0x3c [ 100.153270][ T5321] __dump_stack+0x30/0x40 [ 100.154017][ T5321] dump_stack_lvl+0xf8/0x160 [ 100.154704][ T5321] dump_stack+0x1c/0x5c [ 100.155351][ T5321] sysfs_create_dir_ns+0x22c/0x24c [ 100.156243][ T5321] kobject_add_internal+0x5a8/0xb30 [ 100.157100][ T5321] kobject_init_and_add+0x118/0x17c [ 100.157901][ T5321] gfs2_sys_fs_add+0x1dc/0x3d8 [ 100.158689][ T5321] gfs2_fill_super+0xdec/0x19ec [ 100.159396][ T5321] get_tree_bdev+0x358/0x544 [ 100.160065][ T5321] gfs2_get_tree+0x54/0x1b4 [ 100.160729][ T5321] vfs_get_tree+0x90/0x274 [ 100.161379][ T5321] do_new_mount+0x228/0x810 [ 100.162014][ T5321] path_mount+0x5b4/0xe78 [ 100.162617][ T5321] __arm64_sys_mount+0x49c/0x584 [ 100.163331][ T5321] invoke_syscall+0x98/0x2bc [ 100.163993][ T5321] el0_svc_common+0x138/0x258 [ 100.164613][ T5321] do_el0_svc+0x58/0x13c [ 100.165192][ T5321] el0_svc+0x58/0x138 [ 100.165858][ T5321] el0t_64_sync_handler+0x84/0xf0 [ 100.166672][ T5321] el0t_64_sync+0x18c/0x190 [ 100.167543][ T5321] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 100.169580][ T5321] gfs2: fsid=syz:syz: error -17 adding sysfs files 1970/01/01 00:01:40 executed programs: 318 [ 100.192917][ T5319] loop1: detected capacity change from 0 to 32768 [ 100.197341][ T5317] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 100.197408][ T5319] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 100.198616][ T5317] CPU: 1 PID: 5317 Comm: syz.0.320 Not tainted syzkaller #0 [ 100.200905][ T5317] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 100.202599][ T5317] Call trace: [ 100.203097][ T5317] dump_backtrace+0x1c8/0x1f4 [ 100.203880][ T5317] show_stack+0x2c/0x3c [ 100.204548][ T5317] __dump_stack+0x30/0x40 [ 100.205238][ T5317] dump_stack_lvl+0xf8/0x160 [ 100.205985][ T5317] dump_stack+0x1c/0x5c [ 100.206649][ T5317] sysfs_create_dir_ns+0x22c/0x24c [ 100.207454][ T5317] kobject_add_internal+0x5a8/0xb30 [ 100.208220][ T5317] kobject_init_and_add+0x118/0x17c [ 100.209095][ T5317] gfs2_sys_fs_add+0x1dc/0x3d8 [ 100.209920][ T5317] gfs2_fill_super+0xdec/0x19ec [ 100.210673][ T5317] get_tree_bdev+0x358/0x544 [ 100.211442][ T5317] gfs2_get_tree+0x54/0x1b4 [ 100.212135][ T5317] vfs_get_tree+0x90/0x274 [ 100.212819][ T5317] do_new_mount+0x228/0x810 [ 100.213516][ T5317] path_mount+0x5b4/0xe78 [ 100.214235][ T5317] __arm64_sys_mount+0x49c/0x584 [ 100.215097][ T5317] invoke_syscall+0x98/0x2bc [ 100.215908][ T5317] el0_svc_common+0x138/0x258 [ 100.216679][ T5317] do_el0_svc+0x58/0x13c [ 100.217476][ T5317] el0_svc+0x58/0x138 [ 100.218178][ T5317] el0t_64_sync_handler+0x84/0xf0 [ 100.218994][ T5317] el0t_64_sync+0x18c/0x190 [ 100.219664][ T5319] CPU: 0 PID: 5319 Comm: syz.1.323 Not tainted syzkaller #0 [ 100.219827][ T5317] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 100.220701][ T5319] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 100.222707][ T5317] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 100.224466][ T5319] Call trace: [ 100.226062][ T5319] dump_backtrace+0x1c8/0x1f4 [ 100.226847][ T5319] show_stack+0x2c/0x3c [ 100.227647][ T5319] __dump_stack+0x30/0x40 [ 100.228373][ T5319] dump_stack_lvl+0xf8/0x160 [ 100.229213][ T5319] dump_stack+0x1c/0x5c [ 100.229910][ T5319] sysfs_create_dir_ns+0x22c/0x24c [ 100.230752][ T5319] kobject_add_internal+0x5a8/0xb30 [ 100.231632][ T5319] kobject_init_and_add+0x118/0x17c [ 100.232457][ T5319] gfs2_sys_fs_add+0x1dc/0x3d8 [ 100.233210][ T5319] gfs2_fill_super+0xdec/0x19ec [ 100.234087][ T5319] get_tree_bdev+0x358/0x544 [ 100.234868][ T5319] gfs2_get_tree+0x54/0x1b4 [ 100.235572][ T5319] vfs_get_tree+0x90/0x274 [ 100.236331][ T5319] do_new_mount+0x228/0x810 [ 100.237051][ T5319] path_mount+0x5b4/0xe78 [ 100.237761][ T5319] __arm64_sys_mount+0x49c/0x584 [ 100.238609][ T5319] invoke_syscall+0x98/0x2bc [ 100.239330][ T5319] el0_svc_common+0x138/0x258 [ 100.240111][ T5319] do_el0_svc+0x58/0x13c [ 100.240804][ T5319] el0_svc+0x58/0x138 [ 100.241407][ T5319] el0t_64_sync_handler+0x84/0xf0 [ 100.242204][ T5319] el0t_64_sync+0x18c/0x190 [ 100.243027][ T5319] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 100.245025][ T5319] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 100.270862][ T5316] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms [ 100.272697][ T4427] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 100.273816][ T4427] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 100.445343][ T4427] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 171ms [ 100.446720][ T4427] gfs2: fsid=syz:syz.0: jid=0: Done [ 100.447522][ T5316] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 100.632805][ T5327] loop0: detected capacity change from 0 to 32768 [ 100.634520][ T5327] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 100.635670][ T5327] CPU: 0 PID: 5327 Comm: syz.0.326 Not tainted syzkaller #0 [ 100.636791][ T5327] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 100.638398][ T5327] Call trace: [ 100.638916][ T5327] dump_backtrace+0x1c8/0x1f4 [ 100.639642][ T5327] show_stack+0x2c/0x3c [ 100.640308][ T5327] __dump_stack+0x30/0x40 [ 100.641008][ T5327] dump_stack_lvl+0xf8/0x160 [ 100.641726][ T5327] dump_stack+0x1c/0x5c [ 100.642388][ T5327] sysfs_create_dir_ns+0x22c/0x24c [ 100.643171][ T5327] kobject_add_internal+0x5a8/0xb30 [ 100.643990][ T5327] kobject_init_and_add+0x118/0x17c [ 100.644771][ T5327] gfs2_sys_fs_add+0x1dc/0x3d8 [ 100.645597][ T5327] gfs2_fill_super+0xdec/0x19ec [ 100.646379][ T5327] get_tree_bdev+0x358/0x544 [ 100.647083][ T5327] gfs2_get_tree+0x54/0x1b4 [ 100.647783][ T5327] vfs_get_tree+0x90/0x274 [ 100.648565][ T5327] do_new_mount+0x228/0x810 [ 100.649341][ T5327] path_mount+0x5b4/0xe78 [ 100.650096][ T5327] __arm64_sys_mount+0x49c/0x584 [ 100.650840][ T5327] invoke_syscall+0x98/0x2bc [ 100.651595][ T5327] el0_svc_common+0x138/0x258 [ 100.652430][ T5327] do_el0_svc+0x58/0x13c [ 100.653111][ T5327] el0_svc+0x58/0x138 [ 100.653699][ T5327] el0t_64_sync_handler+0x84/0xf0 [ 100.654479][ T5327] el0t_64_sync+0x18c/0x190 [ 100.655345][ T5327] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 100.657264][ T5327] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 100.824658][ T5330] loop3: detected capacity change from 0 to 32768 [ 100.879427][ T5330] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 100.880745][ T5330] CPU: 0 PID: 5330 Comm: syz.3.328 Not tainted syzkaller #0 [ 100.881908][ T5330] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 100.883661][ T5330] Call trace: [ 100.884200][ T5330] dump_backtrace+0x1c8/0x1f4 [ 100.884979][ T5330] show_stack+0x2c/0x3c [ 100.885679][ T5330] __dump_stack+0x30/0x40 [ 100.886384][ T5330] dump_stack_lvl+0xf8/0x160 [ 100.887172][ T5330] dump_stack+0x1c/0x5c [ 100.887869][ T5330] sysfs_create_dir_ns+0x22c/0x24c [ 100.888684][ T5330] kobject_add_internal+0x5a8/0xb30 [ 100.889509][ T5330] kobject_init_and_add+0x118/0x17c [ 100.890317][ T5330] gfs2_sys_fs_add+0x1dc/0x3d8 [ 100.891064][ T5330] gfs2_fill_super+0xdec/0x19ec [ 100.891773][ T5330] get_tree_bdev+0x358/0x544 [ 100.892523][ T5330] gfs2_get_tree+0x54/0x1b4 [ 100.893271][ T5330] vfs_get_tree+0x90/0x274 [ 100.894012][ T5330] do_new_mount+0x228/0x810 [ 100.894728][ T5330] path_mount+0x5b4/0xe78 [ 100.895405][ T5330] __arm64_sys_mount+0x49c/0x584 [ 100.896293][ T5330] invoke_syscall+0x98/0x2bc [ 100.897099][ T5330] el0_svc_common+0x138/0x258 [ 100.897861][ T5330] do_el0_svc+0x58/0x13c [ 100.898597][ T5330] el0_svc+0x58/0x138 [ 100.899274][ T5330] el0t_64_sync_handler+0x84/0xf0 [ 100.900104][ T5330] el0t_64_sync+0x18c/0x190 [ 100.900956][ T5330] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 100.902870][ T5330] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 100.955758][ T5316] gfs2: fsid=syz:syz.0: found 1 quota changes [ 101.041301][ T5334] loop0: detected capacity change from 0 to 32768 [ 101.075198][ T5334] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 101.076397][ T5334] CPU: 0 PID: 5334 Comm: syz.0.330 Not tainted syzkaller #0 [ 101.077561][ T5334] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 101.079094][ T5334] Call trace: [ 101.079631][ T5334] dump_backtrace+0x1c8/0x1f4 [ 101.080464][ T5334] show_stack+0x2c/0x3c [ 101.081161][ T5334] __dump_stack+0x30/0x40 [ 101.081930][ T5334] dump_stack_lvl+0xf8/0x160 [ 101.082722][ T5334] dump_stack+0x1c/0x5c [ 101.083385][ T5334] sysfs_create_dir_ns+0x22c/0x24c [ 101.084212][ T5334] kobject_add_internal+0x5a8/0xb30 [ 101.085052][ T5334] kobject_init_and_add+0x118/0x17c [ 101.085979][ T5334] gfs2_sys_fs_add+0x1dc/0x3d8 [ 101.086832][ T5334] gfs2_fill_super+0xdec/0x19ec [ 101.087718][ T5334] get_tree_bdev+0x358/0x544 [ 101.088519][ T5334] gfs2_get_tree+0x54/0x1b4 [ 101.089331][ T5334] vfs_get_tree+0x90/0x274 [ 101.090119][ T5334] do_new_mount+0x228/0x810 [ 101.090941][ T5334] path_mount+0x5b4/0xe78 [ 101.091680][ T5334] __arm64_sys_mount+0x49c/0x584 [ 101.092540][ T5334] invoke_syscall+0x98/0x2bc [ 101.093318][ T5334] el0_svc_common+0x138/0x258 [ 101.094128][ T5334] do_el0_svc+0x58/0x13c [ 101.094889][ T5334] el0_svc+0x58/0x138 [ 101.095523][ T5334] el0t_64_sync_handler+0x84/0xf0 [ 101.096376][ T5334] el0t_64_sync+0x18c/0x190 [ 101.097176][ T5334] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 101.099336][ T5334] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 101.223199][ T4454] gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485 [ 101.225680][ T4454] CPU: 0 PID: 4454 Comm: syz-executor Not tainted syzkaller #0 [ 101.226895][ T4454] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 101.228437][ T4454] Call trace: [ 101.228934][ T4454] dump_backtrace+0x1c8/0x1f4 [ 101.229703][ T4454] show_stack+0x2c/0x3c [ 101.230345][ T4454] __dump_stack+0x30/0x40 [ 101.231040][ T4454] dump_stack_lvl+0xf8/0x160 [ 101.231767][ T4454] dump_stack+0x1c/0x5c [ 101.232431][ T4454] gfs2_assert_warn_i+0x16c/0x26c [ 101.233229][ T4454] gfs2_quota_cleanup+0x454/0x65c [ 101.234014][ T4454] gfs2_make_fs_ro+0x358/0x430 [ 101.234766][ T4454] gfs2_put_super+0x1e0/0x764 [ 101.235537][ T4454] generic_shutdown_super+0x130/0x324 [ 101.236444][ T4454] kill_block_super+0x70/0xdc [ 101.237208][ T4454] gfs2_kill_sb+0xc0/0xd4 [ 101.237889][ T4454] deactivate_locked_super+0xac/0x124 [ 101.238756][ T4454] deactivate_super+0xe8/0x108 [ 101.239472][ T4454] cleanup_mnt+0x37c/0x404 [ 101.240169][ T4454] __cleanup_mnt+0x20/0x30 [ 101.240867][ T4454] task_work_run+0x1ec/0x270 [ 101.241685][ T4454] do_notify_resume+0x1f70/0x2b0c [ 101.242528][ T4454] el0_svc+0x98/0x138 [ 101.243186][ T4454] el0t_64_sync_handler+0x84/0xf0 [ 101.244010][ T4454] el0t_64_sync+0x18c/0x190 [ 101.555099][ T5342] loop1: detected capacity change from 0 to 32768 [ 101.666197][ T5348] loop0: detected capacity change from 0 to 32768 [ 101.717756][ T5344] loop3: detected capacity change from 0 to 32768 [ 101.720921][ T5348] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 101.722887][ T5348] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 101.724201][ T5344] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 101.725259][ T5344] CPU: 0 PID: 5344 Comm: syz.3.335 Not tainted syzkaller #0 [ 101.726323][ T5344] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 101.727880][ T5344] Call trace: [ 101.728451][ T5344] dump_backtrace+0x1c8/0x1f4 [ 101.729210][ T5344] show_stack+0x2c/0x3c [ 101.729871][ T5344] __dump_stack+0x30/0x40 [ 101.730606][ T5344] dump_stack_lvl+0xf8/0x160 [ 101.731356][ T5344] dump_stack+0x1c/0x5c [ 101.732002][ T5344] sysfs_create_dir_ns+0x22c/0x24c [ 101.732879][ T5344] kobject_add_internal+0x5a8/0xb30 [ 101.733738][ T5344] kobject_init_and_add+0x118/0x17c [ 101.734517][ T5344] gfs2_sys_fs_add+0x1dc/0x3d8 [ 101.735287][ T5344] gfs2_fill_super+0xdec/0x19ec [ 101.736027][ T5344] get_tree_bdev+0x358/0x544 [ 101.736792][ T5344] gfs2_get_tree+0x54/0x1b4 [ 101.737507][ T5344] vfs_get_tree+0x90/0x274 [ 101.738180][ T5344] do_new_mount+0x228/0x810 [ 101.738931][ T5344] path_mount+0x5b4/0xe78 [ 101.739654][ T5344] __arm64_sys_mount+0x49c/0x584 [ 101.740500][ T5344] invoke_syscall+0x98/0x2bc [ 101.741268][ T5344] el0_svc_common+0x138/0x258 [ 101.742043][ T5344] do_el0_svc+0x58/0x13c [ 101.742815][ T5344] el0_svc+0x58/0x138 [ 101.743462][ T5344] el0t_64_sync_handler+0x84/0xf0 [ 101.744249][ T5344] el0t_64_sync+0x18c/0x190 [ 101.745103][ T5344] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 101.747218][ T5344] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 101.751934][ T5348] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms [ 101.753627][ T4426] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 101.754731][ T4426] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 101.779074][ T4426] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 24ms [ 101.783567][ T4426] gfs2: fsid=syz:syz.0: jid=0: Done [ 101.784427][ T5348] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 101.819136][ T5342] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 101.820984][ T5342] CPU: 1 PID: 5342 Comm: syz.1.334 Not tainted syzkaller #0 [ 101.822088][ T5342] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 101.823612][ T5342] Call trace: [ 101.824105][ T5342] dump_backtrace+0x1c8/0x1f4 [ 101.824809][ T5342] show_stack+0x2c/0x3c [ 101.825437][ T5342] __dump_stack+0x30/0x40 [ 101.826165][ T5342] dump_stack_lvl+0xf8/0x160 [ 101.826934][ T5342] dump_stack+0x1c/0x5c [ 101.827605][ T5342] sysfs_create_dir_ns+0x22c/0x24c [ 101.828404][ T5342] kobject_add_internal+0x5a8/0xb30 [ 101.829215][ T5342] kobject_init_and_add+0x118/0x17c [ 101.830002][ T5342] gfs2_sys_fs_add+0x1dc/0x3d8 [ 101.830775][ T5342] gfs2_fill_super+0xdec/0x19ec [ 101.831563][ T5342] get_tree_bdev+0x358/0x544 [ 101.832249][ T5342] gfs2_get_tree+0x54/0x1b4 [ 101.832913][ T5342] vfs_get_tree+0x90/0x274 [ 101.833578][ T5342] do_new_mount+0x228/0x810 [ 101.834275][ T5342] path_mount+0x5b4/0xe78 [ 101.834931][ T5342] __arm64_sys_mount+0x49c/0x584 [ 101.835750][ T5342] invoke_syscall+0x98/0x2bc [ 101.836500][ T5342] el0_svc_common+0x138/0x258 [ 101.837238][ T5342] do_el0_svc+0x58/0x13c [ 101.837810][ T5342] el0_svc+0x58/0x138 [ 101.838391][ T5342] el0t_64_sync_handler+0x84/0xf0 [ 101.839176][ T5342] el0t_64_sync+0x18c/0x190 [ 101.839985][ T5342] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 101.842090][ T5342] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 102.038598][ T5351] loop2: detected capacity change from 0 to 32768 [ 102.041346][ T5351] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 102.042668][ T5351] CPU: 0 PID: 5351 Comm: syz.2.337 Not tainted syzkaller #0 [ 102.043772][ T5351] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 102.045226][ T5351] Call trace: [ 102.045723][ T5351] dump_backtrace+0x1c8/0x1f4 [ 102.046379][ T5351] show_stack+0x2c/0x3c [ 102.046975][ T5351] __dump_stack+0x30/0x40 [ 102.047603][ T5351] dump_stack_lvl+0xf8/0x160 [ 102.048269][ T5351] dump_stack+0x1c/0x5c [ 102.048857][ T5351] sysfs_create_dir_ns+0x22c/0x24c [ 102.049578][ T5351] kobject_add_internal+0x5a8/0xb30 [ 102.050298][ T5351] kobject_init_and_add+0x118/0x17c [ 102.051177][ T5351] gfs2_sys_fs_add+0x1dc/0x3d8 [ 102.051983][ T5351] gfs2_fill_super+0xdec/0x19ec [ 102.052834][ T5351] get_tree_bdev+0x358/0x544 [ 102.053637][ T5351] gfs2_get_tree+0x54/0x1b4 [ 102.054424][ T5351] vfs_get_tree+0x90/0x274 [ 102.055114][ T5351] do_new_mount+0x228/0x810 [ 102.055807][ T5351] path_mount+0x5b4/0xe78 [ 102.056545][ T5351] __arm64_sys_mount+0x49c/0x584 [ 102.057419][ T5351] invoke_syscall+0x98/0x2bc [ 102.058171][ T5351] el0_svc_common+0x138/0x258 [ 102.058921][ T5351] do_el0_svc+0x58/0x13c [ 102.059579][ T5351] el0_svc+0x58/0x138 [ 102.060317][ T5351] el0t_64_sync_handler+0x84/0xf0 [ 102.061195][ T5351] el0t_64_sync+0x18c/0x190 [ 102.062002][ T5351] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 102.064052][ T5351] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 102.411699][ T5359] loop4: detected capacity change from 0 to 32768 [ 102.417082][ T5359] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 102.418305][ T5359] CPU: 1 PID: 5359 Comm: syz.4.340 Not tainted syzkaller #0 [ 102.419438][ T5359] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 102.421075][ T5359] Call trace: [ 102.421589][ T5359] dump_backtrace+0x1c8/0x1f4 [ 102.422382][ T5359] show_stack+0x2c/0x3c [ 102.423021][ T5359] __dump_stack+0x30/0x40 [ 102.423710][ T5359] dump_stack_lvl+0xf8/0x160 [ 102.424478][ T5359] dump_stack+0x1c/0x5c [ 102.425199][ T5359] sysfs_create_dir_ns+0x22c/0x24c [ 102.426023][ T5359] kobject_add_internal+0x5a8/0xb30 [ 102.426854][ T5359] kobject_init_and_add+0x118/0x17c [ 102.427672][ T5359] gfs2_sys_fs_add+0x1dc/0x3d8 [ 102.428417][ T5359] gfs2_fill_super+0xdec/0x19ec [ 102.429233][ T5359] get_tree_bdev+0x358/0x544 [ 102.429988][ T5359] gfs2_get_tree+0x54/0x1b4 [ 102.430708][ T5359] vfs_get_tree+0x90/0x274 [ 102.431414][ T5359] do_new_mount+0x228/0x810 [ 102.432125][ T5359] path_mount+0x5b4/0xe78 [ 102.432826][ T5359] __arm64_sys_mount+0x49c/0x584 [ 102.433622][ T5359] invoke_syscall+0x98/0x2bc [ 102.434391][ T5359] el0_svc_common+0x138/0x258 [ 102.435190][ T5359] do_el0_svc+0x58/0x13c [ 102.435865][ T5359] el0_svc+0x58/0x138 [ 102.436525][ T5359] el0t_64_sync_handler+0x84/0xf0 [ 102.437329][ T5359] el0t_64_sync+0x18c/0x190 [ 102.438181][ T5359] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 102.440070][ T5359] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 102.452559][ T5348] gfs2: fsid=syz:syz.0: found 1 quota changes [ 102.491786][ T4888] I/O error, dev loop2, sector 32640 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 102.846753][ T5367] loop2: detected capacity change from 0 to 32768 [ 102.848392][ T5367] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 102.849581][ T5367] CPU: 0 PID: 5367 Comm: syz.2.344 Not tainted syzkaller #0 [ 102.850714][ T5367] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 102.852252][ T5367] Call trace: [ 102.852759][ T5367] dump_backtrace+0x1c8/0x1f4 [ 102.853425][ T5367] show_stack+0x2c/0x3c [ 102.854048][ T5367] __dump_stack+0x30/0x40 [ 102.854689][ T5367] dump_stack_lvl+0xf8/0x160 [ 102.855441][ T5367] dump_stack+0x1c/0x5c [ 102.856101][ T5367] sysfs_create_dir_ns+0x22c/0x24c [ 102.856919][ T5367] kobject_add_internal+0x5a8/0xb30 [ 102.857841][ T5367] kobject_init_and_add+0x118/0x17c [ 102.858756][ T5367] gfs2_sys_fs_add+0x1dc/0x3d8 [ 102.859588][ T5367] gfs2_fill_super+0xdec/0x19ec [ 102.860390][ T5367] get_tree_bdev+0x358/0x544 [ 102.861035][ T5367] gfs2_get_tree+0x54/0x1b4 [ 102.861795][ T5367] vfs_get_tree+0x90/0x274 [ 102.862516][ T5367] do_new_mount+0x228/0x810 [ 102.863193][ T5367] path_mount+0x5b4/0xe78 [ 102.863838][ T5367] __arm64_sys_mount+0x49c/0x584 [ 102.864602][ T5367] invoke_syscall+0x98/0x2bc [ 102.865414][ T5367] el0_svc_common+0x138/0x258 [ 102.866115][ T5367] do_el0_svc+0x58/0x13c [ 102.866754][ T5367] el0_svc+0x58/0x138 [ 102.867352][ T5367] el0t_64_sync_handler+0x84/0xf0 [ 102.868156][ T5367] el0t_64_sync+0x18c/0x190 [ 102.868962][ T5367] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 102.871114][ T5367] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 102.969111][ T4438] gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485 [ 102.971163][ T4438] CPU: 0 PID: 4438 Comm: syz-executor Not tainted syzkaller #0 [ 102.972431][ T4438] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 102.973965][ T4438] Call trace: [ 102.974481][ T4438] dump_backtrace+0x1c8/0x1f4 [ 102.975207][ T4438] show_stack+0x2c/0x3c [ 102.975944][ T4438] __dump_stack+0x30/0x40 [ 102.976596][ T4438] dump_stack_lvl+0xf8/0x160 [ 102.977360][ T4438] dump_stack+0x1c/0x5c [ 102.978059][ T4438] gfs2_assert_warn_i+0x16c/0x26c [ 102.978922][ T4438] gfs2_quota_cleanup+0x454/0x65c [ 102.979732][ T4438] gfs2_make_fs_ro+0x358/0x430 [ 102.980427][ T4438] gfs2_put_super+0x1e0/0x764 [ 102.981166][ T4438] generic_shutdown_super+0x130/0x324 [ 102.981947][ T4438] kill_block_super+0x70/0xdc [ 102.982711][ T4438] gfs2_kill_sb+0xc0/0xd4 [ 102.983394][ T4438] deactivate_locked_super+0xac/0x124 [ 102.984222][ T4438] deactivate_super+0xe8/0x108 [ 102.984957][ T4438] cleanup_mnt+0x37c/0x404 [ 102.985644][ T4438] __cleanup_mnt+0x20/0x30 [ 102.986321][ T4438] task_work_run+0x1ec/0x270 [ 102.987038][ T4438] do_notify_resume+0x1f70/0x2b0c [ 102.987881][ T4438] el0_svc+0x98/0x138 [ 102.988461][ T4438] el0t_64_sync_handler+0x84/0xf0 [ 102.989213][ T4438] el0t_64_sync+0x18c/0x190 [ 103.022167][ T5369] loop4: detected capacity change from 0 to 32768 [ 103.282616][ T5369] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 103.283969][ T5369] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 103.362384][ T5375] loop2: detected capacity change from 0 to 32768 [ 103.413490][ T5375] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 103.414648][ T5375] CPU: 0 PID: 5375 Comm: syz.2.349 Not tainted syzkaller #0 [ 103.415744][ T5375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 103.417255][ T5375] Call trace: [ 103.417752][ T5375] dump_backtrace+0x1c8/0x1f4 [ 103.418486][ T5375] show_stack+0x2c/0x3c [ 103.419097][ T5375] __dump_stack+0x30/0x40 [ 103.419747][ T5375] dump_stack_lvl+0xf8/0x160 [ 103.420505][ T5375] dump_stack+0x1c/0x5c [ 103.421155][ T5375] sysfs_create_dir_ns+0x22c/0x24c [ 103.421953][ T5375] kobject_add_internal+0x5a8/0xb30 [ 103.422750][ T5375] kobject_init_and_add+0x118/0x17c [ 103.423546][ T5375] gfs2_sys_fs_add+0x1dc/0x3d8 [ 103.424389][ T5375] gfs2_fill_super+0xdec/0x19ec [ 103.425164][ T5375] get_tree_bdev+0x358/0x544 [ 103.425887][ T5375] gfs2_get_tree+0x54/0x1b4 [ 103.426599][ T5375] vfs_get_tree+0x90/0x274 [ 103.427316][ T5375] do_new_mount+0x228/0x810 [ 103.428017][ T5375] path_mount+0x5b4/0xe78 [ 103.428677][ T5375] __arm64_sys_mount+0x49c/0x584 [ 103.429461][ T5375] invoke_syscall+0x98/0x2bc [ 103.430214][ T5375] el0_svc_common+0x138/0x258 [ 103.430902][ T5375] do_el0_svc+0x58/0x13c [ 103.431558][ T5375] el0_svc+0x58/0x138 [ 103.432216][ T5375] el0t_64_sync_handler+0x84/0xf0 [ 103.433052][ T5375] el0t_64_sync+0x18c/0x190 [ 103.433916][ T5375] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 103.436083][ T5375] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 103.466430][ T5369] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms [ 103.472995][ T4431] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 103.474051][ T4431] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 103.650297][ T4431] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 176ms [ 103.651956][ T4431] gfs2: fsid=syz:syz.0: jid=0: Done [ 103.652796][ T5369] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 103.804642][ T5384] loop0: detected capacity change from 0 to 32768 [ 103.855457][ T5384] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 103.856576][ T5384] CPU: 0 PID: 5384 Comm: syz.0.352 Not tainted syzkaller #0 [ 103.857604][ T5384] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 103.858969][ T5384] Call trace: [ 103.859427][ T5384] dump_backtrace+0x1c8/0x1f4 [ 103.860098][ T5384] show_stack+0x2c/0x3c [ 103.860704][ T5384] __dump_stack+0x30/0x40 [ 103.861405][ T5384] dump_stack_lvl+0xf8/0x160 [ 103.862136][ T5384] dump_stack+0x1c/0x5c [ 103.862818][ T5384] sysfs_create_dir_ns+0x22c/0x24c [ 103.863648][ T5384] kobject_add_internal+0x5a8/0xb30 [ 103.864480][ T5384] kobject_init_and_add+0x118/0x17c [ 103.865289][ T5384] gfs2_sys_fs_add+0x1dc/0x3d8 [ 103.866070][ T5384] gfs2_fill_super+0xdec/0x19ec [ 103.866911][ T5384] get_tree_bdev+0x358/0x544 [ 103.867670][ T5384] gfs2_get_tree+0x54/0x1b4 [ 103.868468][ T5384] vfs_get_tree+0x90/0x274 [ 103.869236][ T5384] do_new_mount+0x228/0x810 [ 103.869993][ T5384] path_mount+0x5b4/0xe78 [ 103.870701][ T5384] __arm64_sys_mount+0x49c/0x584 [ 103.871553][ T5384] invoke_syscall+0x98/0x2bc [ 103.872339][ T5384] el0_svc_common+0x138/0x258 [ 103.873129][ T5384] do_el0_svc+0x58/0x13c [ 103.873887][ T5384] el0_svc+0x58/0x138 [ 103.874560][ T5384] el0t_64_sync_handler+0x84/0xf0 [ 103.875484][ T5384] el0t_64_sync+0x18c/0x190 [ 103.876329][ T5384] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 103.878382][ T5384] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 103.952487][ T5382] loop1: detected capacity change from 0 to 32768 [ 104.065669][ T5382] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 104.066886][ T5382] CPU: 1 PID: 5382 Comm: syz.1.351 Not tainted syzkaller #0 [ 104.068048][ T5382] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 104.069594][ T5382] Call trace: [ 104.070105][ T5382] dump_backtrace+0x1c8/0x1f4 [ 104.070817][ T5382] show_stack+0x2c/0x3c [ 104.071483][ T5382] __dump_stack+0x30/0x40 [ 104.072168][ T5382] dump_stack_lvl+0xf8/0x160 [ 104.072923][ T5382] dump_stack+0x1c/0x5c [ 104.073560][ T5382] sysfs_create_dir_ns+0x22c/0x24c [ 104.074338][ T5382] kobject_add_internal+0x5a8/0xb30 [ 104.075085][ T5382] kobject_init_and_add+0x118/0x17c [ 104.075961][ T5382] gfs2_sys_fs_add+0x1dc/0x3d8 [ 104.076706][ T5382] gfs2_fill_super+0xdec/0x19ec [ 104.077487][ T5382] get_tree_bdev+0x358/0x544 [ 104.078154][ T5382] gfs2_get_tree+0x54/0x1b4 [ 104.078829][ T5382] vfs_get_tree+0x90/0x274 [ 104.079613][ T5382] do_new_mount+0x228/0x810 [ 104.080397][ T5382] path_mount+0x5b4/0xe78 [ 104.081116][ T5382] __arm64_sys_mount+0x49c/0x584 [ 104.081973][ T5382] invoke_syscall+0x98/0x2bc [ 104.082694][ T5382] el0_svc_common+0x138/0x258 [ 104.083425][ T5382] do_el0_svc+0x58/0x13c [ 104.084160][ T5382] el0_svc+0x58/0x138 [ 104.084839][ T5382] el0t_64_sync_handler+0x84/0xf0 [ 104.085677][ T5382] el0t_64_sync+0x18c/0x190 [ 104.086452][ T5382] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 104.088551][ T5382] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 104.291452][ T5392] loop3: detected capacity change from 0 to 32768 [ 104.325291][ T4562] I/O error, dev loop0, sector 32640 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 104.355504][ T5392] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 104.356695][ T5392] CPU: 1 PID: 5392 Comm: syz.3.355 Not tainted syzkaller #0 [ 104.357908][ T5392] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 104.359522][ T5392] Call trace: [ 104.360007][ T5392] dump_backtrace+0x1c8/0x1f4 [ 104.360703][ T5392] show_stack+0x2c/0x3c [ 104.361325][ T5392] __dump_stack+0x30/0x40 [ 104.362040][ T5392] dump_stack_lvl+0xf8/0x160 [ 104.362740][ T5392] dump_stack+0x1c/0x5c [ 104.363413][ T5392] sysfs_create_dir_ns+0x22c/0x24c [ 104.364177][ T5392] kobject_add_internal+0x5a8/0xb30 [ 104.365002][ T5392] kobject_init_and_add+0x118/0x17c [ 104.365787][ T5392] gfs2_sys_fs_add+0x1dc/0x3d8 [ 104.366491][ T5392] gfs2_fill_super+0xdec/0x19ec [ 104.367337][ T5392] get_tree_bdev+0x358/0x544 [ 104.368013][ T5392] gfs2_get_tree+0x54/0x1b4 [ 104.368700][ T5392] vfs_get_tree+0x90/0x274 [ 104.369342][ T5392] do_new_mount+0x228/0x810 [ 104.370075][ T5392] path_mount+0x5b4/0xe78 [ 104.370804][ T5392] __arm64_sys_mount+0x49c/0x584 [ 104.371635][ T5392] invoke_syscall+0x98/0x2bc [ 104.372312][ T5392] el0_svc_common+0x138/0x258 [ 104.372973][ T5392] do_el0_svc+0x58/0x13c [ 104.373600][ T5392] el0_svc+0x58/0x138 [ 104.374204][ T5392] el0t_64_sync_handler+0x84/0xf0 [ 104.374963][ T5392] el0t_64_sync+0x18c/0x190 [ 104.375868][ T5392] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 104.377878][ T5392] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 104.384193][ T5369] gfs2: fsid=syz:syz.0: found 1 quota changes [ 104.629469][ T5399] loop0: detected capacity change from 0 to 32768 [ 104.642055][ T4525] I/O error, dev loop3, sector 32640 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 104.721418][ T5399] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 104.722674][ T5399] CPU: 0 PID: 5399 Comm: syz.0.358 Not tainted syzkaller #0 [ 104.723791][ T5399] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 104.725301][ T5399] Call trace: [ 104.725789][ T5399] dump_backtrace+0x1c8/0x1f4 [ 104.726475][ T5399] show_stack+0x2c/0x3c [ 104.727100][ T5399] __dump_stack+0x30/0x40 [ 104.727746][ T5399] dump_stack_lvl+0xf8/0x160 [ 104.728390][ T5399] dump_stack+0x1c/0x5c [ 104.729063][ T5399] sysfs_create_dir_ns+0x22c/0x24c [ 104.729806][ T5399] kobject_add_internal+0x5a8/0xb30 [ 104.730552][ T5399] kobject_init_and_add+0x118/0x17c [ 104.731293][ T5399] gfs2_sys_fs_add+0x1dc/0x3d8 [ 104.732103][ T5399] gfs2_fill_super+0xdec/0x19ec [ 104.732885][ T5399] get_tree_bdev+0x358/0x544 [ 104.733583][ T5399] gfs2_get_tree+0x54/0x1b4 [ 104.734265][ T5399] vfs_get_tree+0x90/0x274 [ 104.734932][ T5399] do_new_mount+0x228/0x810 [ 104.735615][ T5399] path_mount+0x5b4/0xe78 [ 104.736267][ T5399] __arm64_sys_mount+0x49c/0x584 [ 104.737098][ T5399] invoke_syscall+0x98/0x2bc [ 104.737907][ T5399] el0_svc_common+0x138/0x258 [ 104.738736][ T5399] do_el0_svc+0x58/0x13c [ 104.739495][ T5399] el0_svc+0x58/0x138 [ 104.740163][ T5399] el0t_64_sync_handler+0x84/0xf0 [ 104.740993][ T5399] el0t_64_sync+0x18c/0x190 [ 104.741846][ T5399] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 104.743968][ T5399] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 104.767346][ T4454] gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485 [ 104.769472][ T4454] CPU: 0 PID: 4454 Comm: syz-executor Not tainted syzkaller #0 [ 104.770706][ T4454] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 104.772308][ T4454] Call trace: [ 104.772879][ T4454] dump_backtrace+0x1c8/0x1f4 [ 104.773646][ T4454] show_stack+0x2c/0x3c [ 104.774298][ T4454] __dump_stack+0x30/0x40 [ 104.774990][ T4454] dump_stack_lvl+0xf8/0x160 [ 104.775730][ T4454] dump_stack+0x1c/0x5c [ 104.776384][ T4454] gfs2_assert_warn_i+0x16c/0x26c [ 104.777261][ T4454] gfs2_quota_cleanup+0x454/0x65c [ 104.778080][ T4454] gfs2_make_fs_ro+0x358/0x430 [ 104.778878][ T4454] gfs2_put_super+0x1e0/0x764 [ 104.779661][ T4454] generic_shutdown_super+0x130/0x324 [ 104.780600][ T4454] kill_block_super+0x70/0xdc [ 104.781329][ T4454] gfs2_kill_sb+0xc0/0xd4 [ 104.781972][ T4454] deactivate_locked_super+0xac/0x124 [ 104.782834][ T4454] deactivate_super+0xe8/0x108 [ 104.783600][ T4454] cleanup_mnt+0x37c/0x404 [ 104.784312][ T4454] __cleanup_mnt+0x20/0x30 [ 104.784987][ T4454] task_work_run+0x1ec/0x270 [ 104.785732][ T4454] do_notify_resume+0x1f70/0x2b0c [ 104.786527][ T4454] el0_svc+0x98/0x138 [ 104.787146][ T4454] el0t_64_sync_handler+0x84/0xf0 [ 104.788030][ T4454] el0t_64_sync+0x18c/0x190 [ 104.805398][ T5401] loop2: detected capacity change from 0 to 32768 [ 104.807221][ T5401] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 104.808326][ T5401] CPU: 1 PID: 5401 Comm: syz.2.360 Not tainted syzkaller #0 [ 104.809499][ T5401] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 104.811114][ T5401] Call trace: [ 104.811630][ T5401] dump_backtrace+0x1c8/0x1f4 [ 104.812399][ T5401] show_stack+0x2c/0x3c [ 104.813079][ T5401] __dump_stack+0x30/0x40 [ 104.813743][ T5401] dump_stack_lvl+0xf8/0x160 [ 104.814428][ T5401] dump_stack+0x1c/0x5c [ 104.815042][ T5401] sysfs_create_dir_ns+0x22c/0x24c [ 104.815773][ T5401] kobject_add_internal+0x5a8/0xb30 [ 104.816646][ T5401] kobject_init_and_add+0x118/0x17c [ 104.817487][ T5401] gfs2_sys_fs_add+0x1dc/0x3d8 [ 104.818250][ T5401] gfs2_fill_super+0xdec/0x19ec [ 104.818976][ T5401] get_tree_bdev+0x358/0x544 [ 104.819679][ T5401] gfs2_get_tree+0x54/0x1b4 [ 104.820392][ T5401] vfs_get_tree+0x90/0x274 [ 104.821050][ T5401] do_new_mount+0x228/0x810 [ 104.821812][ T5401] path_mount+0x5b4/0xe78 [ 104.822455][ T5401] __arm64_sys_mount+0x49c/0x584 [ 104.823257][ T5401] invoke_syscall+0x98/0x2bc [ 104.824048][ T5401] el0_svc_common+0x138/0x258 [ 104.824797][ T5401] do_el0_svc+0x58/0x13c [ 104.825456][ T5401] el0_svc+0x58/0x138 [ 104.826109][ T5401] el0t_64_sync_handler+0x84/0xf0 [ 104.826964][ T5401] el0t_64_sync+0x18c/0x190 [ 104.827806][ T5401] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 104.829965][ T5401] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 105.460475][ T5409] loop3: detected capacity change from 0 to 32768 [ 105.511867][ T5409] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 105.513268][ T5409] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 105.515671][ T5409] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms [ 105.517327][ T4426] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 105.518336][ T4426] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 105.556310][ T5412] loop0: detected capacity change from 0 to 32768 1970/01/01 00:01:45 executed programs: 359 [ 105.608305][ T5412] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 105.609523][ T5412] CPU: 1 PID: 5412 Comm: syz.0.364 Not tainted syzkaller #0 [ 105.610658][ T5412] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 105.612245][ T5412] Call trace: [ 105.612736][ T5412] dump_backtrace+0x1c8/0x1f4 [ 105.613428][ T5412] show_stack+0x2c/0x3c [ 105.614021][ T5412] __dump_stack+0x30/0x40 [ 105.614736][ T5412] dump_stack_lvl+0xf8/0x160 [ 105.615451][ T5412] dump_stack+0x1c/0x5c [ 105.616175][ T5412] sysfs_create_dir_ns+0x22c/0x24c [ 105.617009][ T5412] kobject_add_internal+0x5a8/0xb30 [ 105.617769][ T5412] kobject_init_and_add+0x118/0x17c [ 105.618527][ T5412] gfs2_sys_fs_add+0x1dc/0x3d8 [ 105.619287][ T5412] gfs2_fill_super+0xdec/0x19ec [ 105.620037][ T5412] get_tree_bdev+0x358/0x544 [ 105.620758][ T5412] gfs2_get_tree+0x54/0x1b4 [ 105.621446][ T5412] vfs_get_tree+0x90/0x274 [ 105.622066][ T5412] do_new_mount+0x228/0x810 [ 105.622749][ T5412] path_mount+0x5b4/0xe78 [ 105.623444][ T5412] __arm64_sys_mount+0x49c/0x584 [ 105.624268][ T5412] invoke_syscall+0x98/0x2bc [ 105.624969][ T5412] el0_svc_common+0x138/0x258 [ 105.625702][ T5412] do_el0_svc+0x58/0x13c [ 105.626333][ T5412] el0_svc+0x58/0x138 [ 105.626970][ T5412] el0t_64_sync_handler+0x84/0xf0 [ 105.627773][ T5412] el0t_64_sync+0x18c/0x190 [ 105.628615][ T5412] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 105.630471][ T5412] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 105.713314][ T5417] loop1: detected capacity change from 0 to 32768 [ 105.716385][ T5417] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 105.717576][ T5417] CPU: 0 PID: 5417 Comm: syz.1.366 Not tainted syzkaller #0 [ 105.718793][ T5417] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 105.720408][ T5417] Call trace: [ 105.720928][ T5417] dump_backtrace+0x1c8/0x1f4 [ 105.721645][ T5417] show_stack+0x2c/0x3c [ 105.722320][ T5417] __dump_stack+0x30/0x40 [ 105.722994][ T5417] dump_stack_lvl+0xf8/0x160 [ 105.723713][ T5417] dump_stack+0x1c/0x5c [ 105.724367][ T5417] sysfs_create_dir_ns+0x22c/0x24c [ 105.725149][ T5417] kobject_add_internal+0x5a8/0xb30 [ 105.725942][ T5417] kobject_init_and_add+0x118/0x17c [ 105.726797][ T5417] gfs2_sys_fs_add+0x1dc/0x3d8 [ 105.727549][ T5417] gfs2_fill_super+0xdec/0x19ec [ 105.728317][ T5417] get_tree_bdev+0x358/0x544 [ 105.729050][ T5417] gfs2_get_tree+0x54/0x1b4 [ 105.729786][ T5417] vfs_get_tree+0x90/0x274 [ 105.730454][ T5417] do_new_mount+0x228/0x810 [ 105.731122][ T5417] path_mount+0x5b4/0xe78 [ 105.731843][ T5417] __arm64_sys_mount+0x49c/0x584 [ 105.732583][ T5417] invoke_syscall+0x98/0x2bc [ 105.733293][ T5417] el0_svc_common+0x138/0x258 [ 105.734054][ T5417] do_el0_svc+0x58/0x13c [ 105.734741][ T5417] el0_svc+0x58/0x138 [ 105.735401][ T5417] el0t_64_sync_handler+0x84/0xf0 [ 105.736191][ T5417] el0t_64_sync+0x18c/0x190 [ 105.736940][ T5417] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 105.739031][ T5417] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 105.749315][ T4426] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 230ms [ 105.750681][ T4426] gfs2: fsid=syz:syz.0: jid=0: Done [ 105.751578][ T5409] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 105.807994][ T5419] loop4: detected capacity change from 0 to 32768 [ 105.820670][ T5419] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 105.821944][ T5419] CPU: 1 PID: 5419 Comm: syz.4.367 Not tainted syzkaller #0 [ 105.823091][ T5419] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 105.824643][ T5419] Call trace: [ 105.825198][ T5419] dump_backtrace+0x1c8/0x1f4 [ 105.826015][ T5419] show_stack+0x2c/0x3c [ 105.826717][ T5419] __dump_stack+0x30/0x40 [ 105.827438][ T5419] dump_stack_lvl+0xf8/0x160 [ 105.828176][ T5419] dump_stack+0x1c/0x5c [ 105.828833][ T5419] sysfs_create_dir_ns+0x22c/0x24c [ 105.829607][ T5419] kobject_add_internal+0x5a8/0xb30 [ 105.830421][ T5419] kobject_init_and_add+0x118/0x17c [ 105.831274][ T5419] gfs2_sys_fs_add+0x1dc/0x3d8 [ 105.831966][ T5419] gfs2_fill_super+0xdec/0x19ec [ 105.832778][ T5419] get_tree_bdev+0x358/0x544 [ 105.833506][ T5419] gfs2_get_tree+0x54/0x1b4 [ 105.834216][ T5419] vfs_get_tree+0x90/0x274 [ 105.834904][ T5419] do_new_mount+0x228/0x810 [ 105.835606][ T5419] path_mount+0x5b4/0xe78 [ 105.836285][ T5419] __arm64_sys_mount+0x49c/0x584 [ 105.837099][ T5419] invoke_syscall+0x98/0x2bc [ 105.837802][ T5419] el0_svc_common+0x138/0x258 [ 105.838577][ T5419] do_el0_svc+0x58/0x13c [ 105.839299][ T5419] el0_svc+0x58/0x138 [ 105.840003][ T5419] el0t_64_sync_handler+0x84/0xf0 [ 105.840855][ T5419] el0t_64_sync+0x18c/0x190 [ 105.841671][ T5419] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 105.843799][ T5419] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 105.909060][ T5409] gfs2: fsid=syz:syz.0: found 1 quota changes [ 105.972245][ T4562] I/O error, dev loop0, sector 32640 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 106.032243][ T4347] I/O error, dev loop4, sector 32640 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 106.046977][ T4464] I/O error, dev loop1, sector 32640 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 106.240547][ T5426] loop1: detected capacity change from 0 to 32768 [ 106.299156][ T5429] loop0: detected capacity change from 0 to 32768 [ 106.308080][ T5426] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 106.309206][ T5426] CPU: 1 PID: 5426 Comm: syz.1.370 Not tainted syzkaller #0 [ 106.310231][ T5426] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 106.311722][ T5426] Call trace: [ 106.312274][ T5426] dump_backtrace+0x1c8/0x1f4 [ 106.313080][ T5426] show_stack+0x2c/0x3c [ 106.313795][ T5426] __dump_stack+0x30/0x40 [ 106.314552][ T5426] dump_stack_lvl+0xf8/0x160 [ 106.315287][ T5426] dump_stack+0x1c/0x5c [ 106.315998][ T5426] sysfs_create_dir_ns+0x22c/0x24c [ 106.316836][ T5426] kobject_add_internal+0x5a8/0xb30 [ 106.317755][ T5426] kobject_init_and_add+0x118/0x17c [ 106.318666][ T5426] gfs2_sys_fs_add+0x1dc/0x3d8 [ 106.319432][ T5426] gfs2_fill_super+0xdec/0x19ec [ 106.320231][ T5426] get_tree_bdev+0x358/0x544 [ 106.320983][ T5426] gfs2_get_tree+0x54/0x1b4 [ 106.321750][ T5426] vfs_get_tree+0x90/0x274 [ 106.322469][ T5426] do_new_mount+0x228/0x810 [ 106.323225][ T5426] path_mount+0x5b4/0xe78 [ 106.323927][ T5426] __arm64_sys_mount+0x49c/0x584 [ 106.324753][ T5426] invoke_syscall+0x98/0x2bc [ 106.325563][ T5426] el0_svc_common+0x138/0x258 [ 106.326424][ T5426] do_el0_svc+0x58/0x13c [ 106.327181][ T5426] el0_svc+0x58/0x138 [ 106.327922][ T5426] el0t_64_sync_handler+0x84/0xf0 [ 106.328761][ T5426] el0t_64_sync+0x18c/0x190 [ 106.329561][ T5426] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 106.331823][ T5426] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 106.333319][ T5429] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 106.334548][ T5429] CPU: 1 PID: 5429 Comm: syz.0.372 Not tainted syzkaller #0 [ 106.335778][ T5429] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 106.337515][ T5429] Call trace: [ 106.338097][ T5429] dump_backtrace+0x1c8/0x1f4 [ 106.338916][ T5429] show_stack+0x2c/0x3c [ 106.339580][ T5429] __dump_stack+0x30/0x40 [ 106.340282][ T5429] dump_stack_lvl+0xf8/0x160 [ 106.341026][ T5429] dump_stack+0x1c/0x5c [ 106.341732][ T5429] sysfs_create_dir_ns+0x22c/0x24c [ 106.342593][ T5429] kobject_add_internal+0x5a8/0xb30 [ 106.343445][ T5429] kobject_init_and_add+0x118/0x17c [ 106.344304][ T5429] gfs2_sys_fs_add+0x1dc/0x3d8 [ 106.345169][ T5429] gfs2_fill_super+0xdec/0x19ec [ 106.345917][ T5429] get_tree_bdev+0x358/0x544 [ 106.346604][ T5429] gfs2_get_tree+0x54/0x1b4 [ 106.347263][ T5429] vfs_get_tree+0x90/0x274 [ 106.348012][ T5429] do_new_mount+0x228/0x810 [ 106.348788][ T5429] path_mount+0x5b4/0xe78 [ 106.349533][ T5429] __arm64_sys_mount+0x49c/0x584 [ 106.350331][ T5429] invoke_syscall+0x98/0x2bc [ 106.351087][ T5429] el0_svc_common+0x138/0x258 [ 106.351851][ T5429] do_el0_svc+0x58/0x13c [ 106.352503][ T5429] el0_svc+0x58/0x138 [ 106.353136][ T5429] el0t_64_sync_handler+0x84/0xf0 [ 106.353989][ T5429] el0t_64_sync+0x18c/0x190 [ 106.354699][ T5429] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 106.356706][ T5429] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 106.389586][ T4450] gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485 [ 106.409239][ T5427] loop2: detected capacity change from 0 to 32768 [ 106.447014][ T4450] CPU: 0 PID: 4450 Comm: syz-executor Not tainted syzkaller #0 [ 106.448197][ T4450] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 106.449833][ T4450] Call trace: [ 106.450345][ T4450] dump_backtrace+0x1c8/0x1f4 [ 106.451111][ T4450] show_stack+0x2c/0x3c [ 106.451800][ T4450] __dump_stack+0x30/0x40 [ 106.452511][ T4450] dump_stack_lvl+0xf8/0x160 [ 106.453243][ T4450] dump_stack+0x1c/0x5c [ 106.453939][ T4450] gfs2_assert_warn_i+0x16c/0x26c [ 106.454757][ T4450] gfs2_quota_cleanup+0x454/0x65c [ 106.455575][ T4450] gfs2_make_fs_ro+0x358/0x430 [ 106.456329][ T4450] gfs2_put_super+0x1e0/0x764 [ 106.457051][ T4450] generic_shutdown_super+0x130/0x324 [ 106.457867][ T4450] kill_block_super+0x70/0xdc [ 106.458576][ T4450] gfs2_kill_sb+0xc0/0xd4 [ 106.459226][ T4450] deactivate_locked_super+0xac/0x124 [ 106.460031][ T4450] deactivate_super+0xe8/0x108 [ 106.460752][ T4450] cleanup_mnt+0x37c/0x404 [ 106.461493][ T4450] __cleanup_mnt+0x20/0x30 [ 106.462121][ T4450] task_work_run+0x1ec/0x270 [ 106.462812][ T4450] do_notify_resume+0x1f70/0x2b0c [ 106.463591][ T4450] el0_svc+0x98/0x138 [ 106.464285][ T4450] el0t_64_sync_handler+0x84/0xf0 [ 106.465155][ T4450] el0t_64_sync+0x18c/0x190 [ 106.466210][ T5427] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 106.467349][ T5427] CPU: 0 PID: 5427 Comm: syz.2.371 Not tainted syzkaller #0 [ 106.468521][ T5427] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 106.470173][ T5427] Call trace: [ 106.470639][ T5427] dump_backtrace+0x1c8/0x1f4 [ 106.471366][ T5427] show_stack+0x2c/0x3c [ 106.472023][ T5427] __dump_stack+0x30/0x40 [ 106.472717][ T5427] dump_stack_lvl+0xf8/0x160 [ 106.473425][ T5427] dump_stack+0x1c/0x5c [ 106.474058][ T5427] sysfs_create_dir_ns+0x22c/0x24c [ 106.474920][ T5427] kobject_add_internal+0x5a8/0xb30 [ 106.475756][ T5427] kobject_init_and_add+0x118/0x17c [ 106.476668][ T5427] gfs2_sys_fs_add+0x1dc/0x3d8 [ 106.477524][ T5427] gfs2_fill_super+0xdec/0x19ec [ 106.478319][ T5427] get_tree_bdev+0x358/0x544 [ 106.479195][ T5427] gfs2_get_tree+0x54/0x1b4 [ 106.479933][ T5427] vfs_get_tree+0x90/0x274 [ 106.480733][ T5427] do_new_mount+0x228/0x810 [ 106.481448][ T5427] path_mount+0x5b4/0xe78 [ 106.482183][ T5427] __arm64_sys_mount+0x49c/0x584 [ 106.483065][ T5427] invoke_syscall+0x98/0x2bc [ 106.483809][ T5427] el0_svc_common+0x138/0x258 [ 106.484525][ T5427] do_el0_svc+0x58/0x13c [ 106.485241][ T5427] el0_svc+0x58/0x138 [ 106.485948][ T5427] el0t_64_sync_handler+0x84/0xf0 [ 106.486806][ T5427] el0t_64_sync+0x18c/0x190 [ 106.487617][ T5427] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 106.489573][ T5427] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 106.603932][ T5431] loop4: detected capacity change from 0 to 32768 [ 106.613923][ T5431] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 106.615178][ T5431] CPU: 1 PID: 5431 Comm: syz.4.373 Not tainted syzkaller #0 [ 106.616438][ T5431] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 106.618136][ T5431] Call trace: [ 106.618674][ T5431] dump_backtrace+0x1c8/0x1f4 [ 106.619423][ T5431] show_stack+0x2c/0x3c [ 106.620077][ T5431] __dump_stack+0x30/0x40 [ 106.620788][ T5431] dump_stack_lvl+0xf8/0x160 [ 106.621558][ T5431] dump_stack+0x1c/0x5c [ 106.622308][ T5431] sysfs_create_dir_ns+0x22c/0x24c [ 106.623100][ T5431] kobject_add_internal+0x5a8/0xb30 [ 106.623979][ T5431] kobject_init_and_add+0x118/0x17c [ 106.624798][ T5431] gfs2_sys_fs_add+0x1dc/0x3d8 [ 106.625603][ T5431] gfs2_fill_super+0xdec/0x19ec [ 106.626414][ T5431] get_tree_bdev+0x358/0x544 [ 106.627112][ T5431] gfs2_get_tree+0x54/0x1b4 [ 106.627788][ T5431] vfs_get_tree+0x90/0x274 [ 106.628478][ T5431] do_new_mount+0x228/0x810 [ 106.629181][ T5431] path_mount+0x5b4/0xe78 [ 106.629821][ T5431] __arm64_sys_mount+0x49c/0x584 [ 106.630610][ T5431] invoke_syscall+0x98/0x2bc [ 106.631308][ T5431] el0_svc_common+0x138/0x258 [ 106.632033][ T5431] do_el0_svc+0x58/0x13c [ 106.632757][ T5431] el0_svc+0x58/0x138 [ 106.633461][ T5431] el0t_64_sync_handler+0x84/0xf0 [ 106.634272][ T5431] el0t_64_sync+0x18c/0x190 [ 106.635061][ T5431] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 106.637113][ T5431] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 106.693659][ T5434] loop1: detected capacity change from 0 to 32768 [ 106.739323][ T5434] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 106.740584][ T5434] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 106.744194][ T5434] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms [ 106.745860][ T4333] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 106.746985][ T4333] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 106.781938][ T5132] I/O error, dev loop2, sector 32640 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 106.910608][ T4333] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 163ms [ 106.927347][ T4333] gfs2: fsid=syz:syz.0: jid=0: Done [ 106.928220][ T5434] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 107.094990][ T5434] gfs2: fsid=syz:syz.0: found 1 quota changes [ 107.306699][ T5445] loop4: detected capacity change from 0 to 32768 [ 107.310751][ T5444] loop2: detected capacity change from 0 to 32768 [ 107.315721][ T5444] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 107.315738][ T5445] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 107.316859][ T5444] CPU: 0 PID: 5444 Comm: syz.2.378 Not tainted syzkaller #0 [ 107.319219][ T5444] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 107.320795][ T5444] Call trace: [ 107.321307][ T5444] dump_backtrace+0x1c8/0x1f4 [ 107.322110][ T5444] show_stack+0x2c/0x3c [ 107.322833][ T5444] __dump_stack+0x30/0x40 [ 107.323613][ T5444] dump_stack_lvl+0xf8/0x160 [ 107.324344][ T5444] dump_stack+0x1c/0x5c [ 107.325037][ T5444] sysfs_create_dir_ns+0x22c/0x24c [ 107.325824][ T5444] kobject_add_internal+0x5a8/0xb30 [ 107.326579][ T5444] kobject_init_and_add+0x118/0x17c [ 107.327429][ T5444] gfs2_sys_fs_add+0x1dc/0x3d8 [ 107.328151][ T5444] gfs2_fill_super+0xdec/0x19ec [ 107.328965][ T5444] get_tree_bdev+0x358/0x544 [ 107.329727][ T5444] gfs2_get_tree+0x54/0x1b4 [ 107.330375][ T5444] vfs_get_tree+0x90/0x274 [ 107.331092][ T5444] do_new_mount+0x228/0x810 [ 107.331765][ T5444] path_mount+0x5b4/0xe78 [ 107.332424][ T5444] __arm64_sys_mount+0x49c/0x584 [ 107.333249][ T5444] invoke_syscall+0x98/0x2bc [ 107.334017][ T5444] el0_svc_common+0x138/0x258 [ 107.334794][ T5444] do_el0_svc+0x58/0x13c [ 107.335448][ T5444] el0_svc+0x58/0x138 [ 107.336035][ T5444] el0t_64_sync_handler+0x84/0xf0 [ 107.336790][ T5444] el0t_64_sync+0x18c/0x190 [ 107.337515][ T5445] CPU: 1 PID: 5445 Comm: syz.4.377 Not tainted syzkaller #0 [ 107.337598][ T5444] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 107.338682][ T5445] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 107.340831][ T5444] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 107.342459][ T5445] Call trace: [ 107.342467][ T5445] dump_backtrace+0x1c8/0x1f4 [ 107.344735][ T5445] show_stack+0x2c/0x3c [ 107.345333][ T5445] __dump_stack+0x30/0x40 [ 107.346008][ T5445] dump_stack_lvl+0xf8/0x160 [ 107.346653][ T5445] dump_stack+0x1c/0x5c [ 107.347321][ T5445] sysfs_create_dir_ns+0x22c/0x24c [ 107.348212][ T5445] kobject_add_internal+0x5a8/0xb30 [ 107.349098][ T5445] kobject_init_and_add+0x118/0x17c [ 107.349914][ T5445] gfs2_sys_fs_add+0x1dc/0x3d8 [ 107.350682][ T5445] gfs2_fill_super+0xdec/0x19ec [ 107.351481][ T5445] get_tree_bdev+0x358/0x544 [ 107.352222][ T5445] gfs2_get_tree+0x54/0x1b4 [ 107.352926][ T5445] vfs_get_tree+0x90/0x274 [ 107.353697][ T5445] do_new_mount+0x228/0x810 [ 107.354484][ T5445] path_mount+0x5b4/0xe78 [ 107.355219][ T5445] __arm64_sys_mount+0x49c/0x584 [ 107.355972][ T5445] invoke_syscall+0x98/0x2bc [ 107.356718][ T5445] el0_svc_common+0x138/0x258 [ 107.357526][ T5445] do_el0_svc+0x58/0x13c [ 107.358234][ T5445] el0_svc+0x58/0x138 [ 107.358923][ T5445] el0t_64_sync_handler+0x84/0xf0 [ 107.359729][ T5445] el0t_64_sync+0x18c/0x190 [ 107.360665][ T5445] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 107.362882][ T5445] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 107.577421][ T5132] I/O error, dev loop2, sector 32640 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 107.628184][ T4442] gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485 [ 107.630400][ T4442] CPU: 1 PID: 4442 Comm: syz-executor Not tainted syzkaller #0 [ 107.631624][ T4442] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 107.633290][ T4442] Call trace: [ 107.633823][ T4442] dump_backtrace+0x1c8/0x1f4 [ 107.634566][ T4442] show_stack+0x2c/0x3c [ 107.635205][ T4442] __dump_stack+0x30/0x40 [ 107.635843][ T4442] dump_stack_lvl+0xf8/0x160 [ 107.636523][ T4442] dump_stack+0x1c/0x5c [ 107.637134][ T4442] gfs2_assert_warn_i+0x16c/0x26c [ 107.637855][ T4442] gfs2_quota_cleanup+0x454/0x65c [ 107.638592][ T4442] gfs2_make_fs_ro+0x358/0x430 [ 107.639267][ T4442] gfs2_put_super+0x1e0/0x764 [ 107.640059][ T4442] generic_shutdown_super+0x130/0x324 [ 107.641001][ T4442] kill_block_super+0x70/0xdc [ 107.641735][ T4442] gfs2_kill_sb+0xc0/0xd4 [ 107.642457][ T4442] deactivate_locked_super+0xac/0x124 [ 107.643328][ T4442] deactivate_super+0xe8/0x108 [ 107.644114][ T4442] cleanup_mnt+0x37c/0x404 [ 107.644870][ T4442] __cleanup_mnt+0x20/0x30 [ 107.645504][ T4442] task_work_run+0x1ec/0x270 [ 107.646212][ T4442] do_notify_resume+0x1f70/0x2b0c [ 107.647057][ T4442] el0_svc+0x98/0x138 [ 107.647272][ T4347] I/O error, dev loop4, sector 32640 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 107.647728][ T4442] el0t_64_sync_handler+0x84/0xf0 [ 107.647750][ T4442] el0t_64_sync+0x18c/0x190 [ 107.846044][ T5451] loop2: detected capacity change from 0 to 32768 [ 107.855918][ T5451] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 107.857147][ T5451] CPU: 1 PID: 5451 Comm: syz.2.382 Not tainted syzkaller #0 [ 107.858273][ T5451] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 107.859766][ T5451] Call trace: [ 107.860288][ T5451] dump_backtrace+0x1c8/0x1f4 [ 107.861099][ T5451] show_stack+0x2c/0x3c [ 107.861756][ T5451] __dump_stack+0x30/0x40 [ 107.862425][ T5451] dump_stack_lvl+0xf8/0x160 [ 107.863216][ T5451] dump_stack+0x1c/0x5c [ 107.863976][ T5451] sysfs_create_dir_ns+0x22c/0x24c [ 107.864841][ T5451] kobject_add_internal+0x5a8/0xb30 [ 107.865660][ T5451] kobject_init_and_add+0x118/0x17c [ 107.866462][ T5451] gfs2_sys_fs_add+0x1dc/0x3d8 [ 107.867276][ T5451] gfs2_fill_super+0xdec/0x19ec [ 107.868102][ T5451] get_tree_bdev+0x358/0x544 [ 107.868921][ T5451] gfs2_get_tree+0x54/0x1b4 [ 107.869634][ T5451] vfs_get_tree+0x90/0x274 [ 107.870297][ T5451] do_new_mount+0x228/0x810 [ 107.870980][ T5451] path_mount+0x5b4/0xe78 [ 107.871606][ T5451] __arm64_sys_mount+0x49c/0x584 [ 107.872453][ T5451] invoke_syscall+0x98/0x2bc [ 107.873216][ T5451] el0_svc_common+0x138/0x258 [ 107.874016][ T5451] do_el0_svc+0x58/0x13c [ 107.874733][ T5451] el0_svc+0x58/0x138 [ 107.875433][ T5451] el0t_64_sync_handler+0x84/0xf0 [ 107.876192][ T5451] el0t_64_sync+0x18c/0x190 [ 107.876930][ T5451] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 107.878826][ T5451] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 107.941746][ T5453] loop3: detected capacity change from 0 to 32768 [ 107.955900][ T5453] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 107.957234][ T5453] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 107.959655][ T5453] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms [ 107.963158][ T4427] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 107.964267][ T4427] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 107.987745][ T4427] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 23ms [ 107.989278][ T4427] gfs2: fsid=syz:syz.0: jid=0: Done [ 107.990051][ T5453] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 108.076908][ T5455] loop4: detected capacity change from 0 to 32768 [ 108.079468][ T5455] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 108.080620][ T5455] CPU: 1 PID: 5455 Comm: syz.4.383 Not tainted syzkaller #0 [ 108.081834][ T5455] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 108.083344][ T5455] Call trace: [ 108.083851][ T5455] dump_backtrace+0x1c8/0x1f4 [ 108.084682][ T5455] show_stack+0x2c/0x3c [ 108.085369][ T5455] __dump_stack+0x30/0x40 [ 108.086148][ T5455] dump_stack_lvl+0xf8/0x160 [ 108.086930][ T5455] dump_stack+0x1c/0x5c [ 108.087682][ T5455] sysfs_create_dir_ns+0x22c/0x24c [ 108.088558][ T5455] kobject_add_internal+0x5a8/0xb30 [ 108.089383][ T5455] kobject_init_and_add+0x118/0x17c [ 108.090221][ T5455] gfs2_sys_fs_add+0x1dc/0x3d8 [ 108.091030][ T5455] gfs2_fill_super+0xdec/0x19ec [ 108.091815][ T5455] get_tree_bdev+0x358/0x544 [ 108.092565][ T5455] gfs2_get_tree+0x54/0x1b4 [ 108.093301][ T5455] vfs_get_tree+0x90/0x274 [ 108.094019][ T5455] do_new_mount+0x228/0x810 [ 108.094732][ T5455] path_mount+0x5b4/0xe78 [ 108.095465][ T5455] __arm64_sys_mount+0x49c/0x584 [ 108.096272][ T5455] invoke_syscall+0x98/0x2bc [ 108.096958][ T5455] el0_svc_common+0x138/0x258 [ 108.097704][ T5455] do_el0_svc+0x58/0x13c [ 108.098379][ T5455] el0_svc+0x58/0x138 [ 108.098997][ T5455] el0t_64_sync_handler+0x84/0xf0 [ 108.099832][ T5455] el0t_64_sync+0x18c/0x190 [ 108.100580][ T5455] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 108.102480][ T5455] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 108.182743][ T5460] loop0: detected capacity change from 0 to 32768 [ 108.187136][ T5460] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 108.188319][ T5460] CPU: 0 PID: 5460 Comm: syz.0.385 Not tainted syzkaller #0 [ 108.189479][ T5460] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 108.190902][ T5460] Call trace: [ 108.191375][ T5460] dump_backtrace+0x1c8/0x1f4 [ 108.192090][ T5460] show_stack+0x2c/0x3c [ 108.192739][ T5460] __dump_stack+0x30/0x40 [ 108.193402][ T5460] dump_stack_lvl+0xf8/0x160 [ 108.194111][ T5460] dump_stack+0x1c/0x5c [ 108.194750][ T5460] sysfs_create_dir_ns+0x22c/0x24c [ 108.195594][ T5460] kobject_add_internal+0x5a8/0xb30 [ 108.196450][ T5460] kobject_init_and_add+0x118/0x17c [ 108.197230][ T5460] gfs2_sys_fs_add+0x1dc/0x3d8 [ 108.198004][ T5460] gfs2_fill_super+0xdec/0x19ec [ 108.198757][ T5460] get_tree_bdev+0x358/0x544 [ 108.199485][ T5460] gfs2_get_tree+0x54/0x1b4 [ 108.200204][ T5460] vfs_get_tree+0x90/0x274 [ 108.200891][ T5460] do_new_mount+0x228/0x810 [ 108.201593][ T5460] path_mount+0x5b4/0xe78 [ 108.202218][ T5460] __arm64_sys_mount+0x49c/0x584 [ 108.202951][ T5460] invoke_syscall+0x98/0x2bc [ 108.203688][ T5460] el0_svc_common+0x138/0x258 [ 108.204417][ T5460] do_el0_svc+0x58/0x13c [ 108.205065][ T5460] el0_svc+0x58/0x138 [ 108.205726][ T5460] el0t_64_sync_handler+0x84/0xf0 [ 108.206545][ T5460] el0t_64_sync+0x18c/0x190 [ 108.207336][ T5460] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 108.209269][ T5460] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 108.284866][ T5453] gfs2: fsid=syz:syz.0: found 1 quota changes [ 108.298304][ T5461] gfs2: fsid=syz:syz.0: gfs2_quotad: sync error -57 [ 108.341729][ T4347] I/O error, dev loop4, sector 32640 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 108.604440][ T4450] gfs2: fsid=syz:syz.0: about to withdraw this file system [ 108.608517][ T4450] gfs2: fsid=syz:syz.0: Journal recovery skipped for jid 0 until next mount. [ 108.609778][ T4450] gfs2: fsid=syz:syz.0: Glock dequeues delayed: 0 [ 108.610803][ T4450] gfs2: fsid=syz:syz.0: File system withdrawn [ 108.778813][ T5467] loop0: detected capacity change from 0 to 32768 [ 108.780606][ T4450] CPU: 1 PID: 4450 Comm: syz-executor Not tainted syzkaller #0 [ 108.781766][ T4450] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 108.783339][ T4450] Call trace: [ 108.783892][ T4450] dump_backtrace+0x1c8/0x1f4 [ 108.784677][ T4450] show_stack+0x2c/0x3c [ 108.785358][ T4450] __dump_stack+0x30/0x40 [ 108.786072][ T4450] dump_stack_lvl+0xf8/0x160 [ 108.786840][ T4450] dump_stack+0x1c/0x5c [ 108.787487][ T4450] gfs2_withdraw+0xf9c/0x13a8 [ 108.788209][ T4450] gfs2_log_flush+0x16e8/0x1aa0 [ 108.789005][ T4450] do_sync+0x88c/0xa94 [ 108.789638][ T4450] gfs2_quota_sync+0x2e0/0x528 [ 108.790413][ T4450] gfs2_sync_fs+0x4c/0xc4 [ 108.791104][ T4450] sync_filesystem+0xe8/0x218 [ 108.791872][ T4450] generic_shutdown_super+0x70/0x324 [ 108.792693][ T4450] kill_block_super+0x70/0xdc [ 108.793440][ T4450] gfs2_kill_sb+0xc0/0xd4 [ 108.794111][ T4450] deactivate_locked_super+0xac/0x124 [ 108.794931][ T4450] deactivate_super+0xe8/0x108 [ 108.795691][ T4450] cleanup_mnt+0x37c/0x404 [ 108.796360][ T4450] __cleanup_mnt+0x20/0x30 [ 108.797047][ T4450] task_work_run+0x1ec/0x270 [ 108.797818][ T4450] do_notify_resume+0x1f70/0x2b0c [ 108.798673][ T4450] el0_svc+0x98/0x138 [ 108.799307][ T4450] el0t_64_sync_handler+0x84/0xf0 [ 108.800166][ T4450] el0t_64_sync+0x18c/0x190 [ 108.805541][ T5467] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 108.806878][ T5467] CPU: 1 PID: 5467 Comm: syz.0.388 Not tainted syzkaller #0 [ 108.808052][ T5467] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 108.809603][ T5467] Call trace: [ 108.810101][ T5467] dump_backtrace+0x1c8/0x1f4 [ 108.810919][ T5467] show_stack+0x2c/0x3c [ 108.811511][ T5467] __dump_stack+0x30/0x40 [ 108.812139][ T5467] dump_stack_lvl+0xf8/0x160 [ 108.812906][ T5467] dump_stack+0x1c/0x5c [ 108.813518][ T5467] sysfs_create_dir_ns+0x22c/0x24c [ 108.814249][ T5467] kobject_add_internal+0x5a8/0xb30 [ 108.815003][ T5467] kobject_init_and_add+0x118/0x17c [ 108.815805][ T5467] gfs2_sys_fs_add+0x1dc/0x3d8 [ 108.816597][ T5467] gfs2_fill_super+0xdec/0x19ec [ 108.817364][ T5467] get_tree_bdev+0x358/0x544 [ 108.818106][ T5467] gfs2_get_tree+0x54/0x1b4 [ 108.818768][ T5467] vfs_get_tree+0x90/0x274 [ 108.819420][ T5467] do_new_mount+0x228/0x810 [ 108.820083][ T5467] path_mount+0x5b4/0xe78 [ 108.820719][ T5467] __arm64_sys_mount+0x49c/0x584 [ 108.821430][ T5467] invoke_syscall+0x98/0x2bc [ 108.822168][ T5467] el0_svc_common+0x138/0x258 [ 108.822907][ T5467] do_el0_svc+0x58/0x13c [ 108.823555][ T5467] el0_svc+0x58/0x138 [ 108.824192][ T5467] el0t_64_sync_handler+0x84/0xf0 [ 108.825056][ T5467] el0t_64_sync+0x18c/0x190 [ 108.825875][ T5467] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 108.828060][ T5467] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 108.847350][ T4450] gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485 [ 108.849708][ T4450] CPU: 0 PID: 4450 Comm: syz-executor Not tainted syzkaller #0 [ 108.850969][ T4450] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 108.852572][ T4450] Call trace: [ 108.853105][ T4450] dump_backtrace+0x1c8/0x1f4 [ 108.853865][ T4450] show_stack+0x2c/0x3c [ 108.854549][ T4450] __dump_stack+0x30/0x40 [ 108.855225][ T4450] dump_stack_lvl+0xf8/0x160 [ 108.855979][ T4450] dump_stack+0x1c/0x5c [ 108.856622][ T4450] gfs2_assert_warn_i+0x16c/0x26c [ 108.857406][ T4450] gfs2_quota_cleanup+0x454/0x65c [ 108.858175][ T4450] gfs2_put_super+0x1f0/0x764 [ 108.858949][ T4450] generic_shutdown_super+0x130/0x324 [ 108.859759][ T4450] kill_block_super+0x70/0xdc [ 108.860537][ T4450] gfs2_kill_sb+0xc0/0xd4 [ 108.861264][ T4450] deactivate_locked_super+0xac/0x124 [ 108.862098][ T4450] deactivate_super+0xe8/0x108 [ 108.862837][ T4450] cleanup_mnt+0x37c/0x404 [ 108.863564][ T4450] __cleanup_mnt+0x20/0x30 [ 108.864270][ T4450] task_work_run+0x1ec/0x270 [ 108.864955][ T4450] do_notify_resume+0x1f70/0x2b0c [ 108.865743][ T4450] el0_svc+0x98/0x138 [ 108.866394][ T4450] el0t_64_sync_handler+0x84/0xf0 [ 108.867145][ T4450] el0t_64_sync+0x18c/0x190 [ 109.121810][ T5471] loop4: detected capacity change from 0 to 32768 [ 109.159263][ T5471] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 109.160595][ T5471] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 109.165197][ T5471] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms [ 109.166923][ T4427] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 109.167997][ T4427] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 109.225348][ T5478] loop1: detected capacity change from 0 to 32768 [ 109.264142][ T5478] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 109.265381][ T5478] CPU: 1 PID: 5478 Comm: syz.1.394 Not tainted syzkaller #0 [ 109.266626][ T5478] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 109.268269][ T5478] Call trace: [ 109.268780][ T5478] dump_backtrace+0x1c8/0x1f4 [ 109.269519][ T5478] show_stack+0x2c/0x3c [ 109.270181][ T5478] __dump_stack+0x30/0x40 [ 109.270914][ T5478] dump_stack_lvl+0xf8/0x160 [ 109.271695][ T5478] dump_stack+0x1c/0x5c [ 109.272376][ T5478] sysfs_create_dir_ns+0x22c/0x24c [ 109.273155][ T5478] kobject_add_internal+0x5a8/0xb30 [ 109.273935][ T5478] kobject_init_and_add+0x118/0x17c [ 109.274811][ T5478] gfs2_sys_fs_add+0x1dc/0x3d8 [ 109.275566][ T5478] gfs2_fill_super+0xdec/0x19ec [ 109.276357][ T5478] get_tree_bdev+0x358/0x544 [ 109.277124][ T5478] gfs2_get_tree+0x54/0x1b4 [ 109.277949][ T5478] vfs_get_tree+0x90/0x274 [ 109.278726][ T5478] do_new_mount+0x228/0x810 [ 109.279508][ T5478] path_mount+0x5b4/0xe78 [ 109.280275][ T5478] __arm64_sys_mount+0x49c/0x584 [ 109.281086][ T5478] invoke_syscall+0x98/0x2bc [ 109.281794][ T5478] el0_svc_common+0x138/0x258 [ 109.282565][ T5478] do_el0_svc+0x58/0x13c [ 109.283301][ T5478] el0_svc+0x58/0x138 [ 109.283977][ T5478] el0t_64_sync_handler+0x84/0xf0 [ 109.284759][ T5478] el0t_64_sync+0x18c/0x190 [ 109.285527][ T5478] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 109.287415][ T5478] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 109.312277][ T4427] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 144ms [ 109.313583][ T4427] gfs2: fsid=syz:syz.0: jid=0: Done [ 109.314370][ T5471] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 109.494650][ T5482] loop3: detected capacity change from 0 to 32768 [ 109.499070][ T5482] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 109.500263][ T5482] CPU: 1 PID: 5482 Comm: syz.3.389 Not tainted syzkaller #0 [ 109.501398][ T5482] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 109.503145][ T5482] Call trace: [ 109.503684][ T5482] dump_backtrace+0x1c8/0x1f4 [ 109.504498][ T5482] show_stack+0x2c/0x3c [ 109.505176][ T5482] __dump_stack+0x30/0x40 [ 109.505864][ T5482] dump_stack_lvl+0xf8/0x160 [ 109.506637][ T5482] dump_stack+0x1c/0x5c [ 109.507299][ T5482] sysfs_create_dir_ns+0x22c/0x24c [ 109.508106][ T5482] kobject_add_internal+0x5a8/0xb30 [ 109.508984][ T5482] kobject_init_and_add+0x118/0x17c [ 109.509844][ T5482] gfs2_sys_fs_add+0x1dc/0x3d8 [ 109.510653][ T5482] gfs2_fill_super+0xdec/0x19ec [ 109.511464][ T5482] get_tree_bdev+0x358/0x544 [ 109.512213][ T5482] gfs2_get_tree+0x54/0x1b4 [ 109.512976][ T5482] vfs_get_tree+0x90/0x274 [ 109.513741][ T5482] do_new_mount+0x228/0x810 [ 109.514498][ T5482] path_mount+0x5b4/0xe78 [ 109.515185][ T5482] __arm64_sys_mount+0x49c/0x584 [ 109.516030][ T5482] invoke_syscall+0x98/0x2bc [ 109.516774][ T5482] el0_svc_common+0x138/0x258 [ 109.517522][ T5482] do_el0_svc+0x58/0x13c [ 109.518183][ T5482] el0_svc+0x58/0x138 [ 109.518853][ T5482] el0t_64_sync_handler+0x84/0xf0 [ 109.519689][ T5482] el0t_64_sync+0x18c/0x190 [ 109.520466][ T5482] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 109.522593][ T5482] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 109.643658][ T4464] I/O error, dev loop1, sector 32640 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 109.820626][ T5471] gfs2: fsid=syz:syz.0: found 1 quota changes [ 110.127271][ T4454] gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485 [ 110.129646][ T4454] CPU: 1 PID: 4454 Comm: syz-executor Not tainted syzkaller #0 [ 110.130839][ T4454] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 110.132428][ T4454] Call trace: [ 110.132916][ T4454] dump_backtrace+0x1c8/0x1f4 [ 110.133625][ T4454] show_stack+0x2c/0x3c [ 110.134245][ T4454] __dump_stack+0x30/0x40 [ 110.134897][ T4454] dump_stack_lvl+0xf8/0x160 [ 110.135610][ T4454] dump_stack+0x1c/0x5c [ 110.136206][ T4454] gfs2_assert_warn_i+0x16c/0x26c [ 110.136914][ T4454] gfs2_quota_cleanup+0x454/0x65c [ 110.137624][ T4454] gfs2_make_fs_ro+0x358/0x430 [ 110.138410][ T4454] gfs2_put_super+0x1e0/0x764 [ 110.139233][ T4454] generic_shutdown_super+0x130/0x324 [ 110.140188][ T4454] kill_block_super+0x70/0xdc [ 110.141017][ T4454] gfs2_kill_sb+0xc0/0xd4 [ 110.141671][ T4454] deactivate_locked_super+0xac/0x124 [ 110.142511][ T4454] deactivate_super+0xe8/0x108 [ 110.143237][ T4454] cleanup_mnt+0x37c/0x404 [ 110.143943][ T4454] __cleanup_mnt+0x20/0x30 [ 110.144635][ T4454] task_work_run+0x1ec/0x270 [ 110.145398][ T4454] do_notify_resume+0x1f70/0x2b0c [ 110.146221][ T4454] el0_svc+0x98/0x138 [ 110.146890][ T4454] el0t_64_sync_handler+0x84/0xf0 [ 110.147764][ T4454] el0t_64_sync+0x18c/0x190 [ 110.211414][ T5492] loop1: detected capacity change from 0 to 32768 [ 110.245931][ T5492] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 110.247268][ T5492] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 110.249751][ T5492] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms [ 110.251427][ T4333] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 110.252519][ T4333] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 110.447865][ T4333] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 195ms [ 110.449203][ T4333] gfs2: fsid=syz:syz.0: jid=0: Done [ 110.450047][ T5492] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 110.617248][ T5500] loop2: detected capacity change from 0 to 32768 [ 110.691819][ T5500] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 110.693096][ T5500] CPU: 0 PID: 5500 Comm: syz.2.404 Not tainted syzkaller #0 [ 110.694260][ T5500] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 110.695822][ T5500] Call trace: [ 110.696360][ T5500] dump_backtrace+0x1c8/0x1f4 [ 110.697070][ T5500] show_stack+0x2c/0x3c [ 110.697697][ T5500] __dump_stack+0x30/0x40 [ 110.698410][ T5500] dump_stack_lvl+0xf8/0x160 [ 110.699152][ T5500] dump_stack+0x1c/0x5c [ 110.699834][ T5500] sysfs_create_dir_ns+0x22c/0x24c [ 110.700712][ T5500] kobject_add_internal+0x5a8/0xb30 [ 110.701586][ T5500] kobject_init_and_add+0x118/0x17c [ 110.702452][ T5500] gfs2_sys_fs_add+0x1dc/0x3d8 [ 110.703197][ T5500] gfs2_fill_super+0xdec/0x19ec [ 110.704001][ T5500] get_tree_bdev+0x358/0x544 [ 110.704772][ T5500] gfs2_get_tree+0x54/0x1b4 [ 110.705508][ T5500] vfs_get_tree+0x90/0x274 [ 110.706213][ T5500] do_new_mount+0x228/0x810 [ 110.706935][ T5500] path_mount+0x5b4/0xe78 [ 110.707627][ T5500] __arm64_sys_mount+0x49c/0x584 [ 110.708371][ T5500] invoke_syscall+0x98/0x2bc [ 110.709092][ T5500] el0_svc_common+0x138/0x258 [ 110.709810][ T5500] do_el0_svc+0x58/0x13c [ 110.710461][ T5500] el0_svc+0x58/0x138 [ 110.711192][ T5500] el0t_64_sync_handler+0x84/0xf0 [ 110.712004][ T5500] el0t_64_sync+0x18c/0x190 [ 110.712783][ T5500] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 110.714623][ T5500] gfs2: fsid=syz:syz: error -17 adding sysfs files 1970/01/01 00:01:50 executed programs: 400 [ 111.074590][ T4888] I/O error, dev loop2, sector 32640 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 111.114780][ T5492] gfs2: fsid=syz:syz.0: found 1 quota changes [ 111.291488][ T5514] loop2: detected capacity change from 0 to 32768 [ 111.300263][ T5514] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 111.301384][ T5514] CPU: 0 PID: 5514 Comm: syz.2.408 Not tainted syzkaller #0 [ 111.302511][ T5514] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 111.303971][ T5514] Call trace: [ 111.304459][ T5514] dump_backtrace+0x1c8/0x1f4 [ 111.305147][ T5514] show_stack+0x2c/0x3c [ 111.305754][ T5514] __dump_stack+0x30/0x40 [ 111.306401][ T5514] dump_stack_lvl+0xf8/0x160 [ 111.307077][ T5514] dump_stack+0x1c/0x5c [ 111.307786][ T5514] sysfs_create_dir_ns+0x22c/0x24c [ 111.308622][ T5514] kobject_add_internal+0x5a8/0xb30 [ 111.309476][ T5514] kobject_init_and_add+0x118/0x17c [ 111.310341][ T5514] gfs2_sys_fs_add+0x1dc/0x3d8 [ 111.311128][ T5514] gfs2_fill_super+0xdec/0x19ec [ 111.311846][ T5514] get_tree_bdev+0x358/0x544 [ 111.312561][ T5514] gfs2_get_tree+0x54/0x1b4 [ 111.313244][ T5514] vfs_get_tree+0x90/0x274 [ 111.313960][ T5514] do_new_mount+0x228/0x810 [ 111.314699][ T5514] path_mount+0x5b4/0xe78 [ 111.315366][ T5514] __arm64_sys_mount+0x49c/0x584 [ 111.316127][ T5514] invoke_syscall+0x98/0x2bc [ 111.316901][ T5514] el0_svc_common+0x138/0x258 [ 111.317612][ T5514] do_el0_svc+0x58/0x13c [ 111.318269][ T5514] el0_svc+0x58/0x138 [ 111.318955][ T5514] el0t_64_sync_handler+0x84/0xf0 [ 111.319807][ T5514] el0t_64_sync+0x18c/0x190 [ 111.320726][ T5514] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 111.322946][ T5514] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 111.536919][ T5517] loop0: detected capacity change from 0 to 32768 [ 111.605755][ T5517] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 111.606986][ T5517] CPU: 0 PID: 5517 Comm: syz.0.410 Not tainted syzkaller #0 [ 111.608117][ T5517] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 111.609616][ T5517] Call trace: [ 111.610119][ T5517] dump_backtrace+0x1c8/0x1f4 [ 111.610837][ T5517] show_stack+0x2c/0x3c [ 111.611484][ T5517] __dump_stack+0x30/0x40 [ 111.612178][ T5517] dump_stack_lvl+0xf8/0x160 [ 111.612951][ T5517] dump_stack+0x1c/0x5c [ 111.613614][ T5517] sysfs_create_dir_ns+0x22c/0x24c [ 111.614441][ T5517] kobject_add_internal+0x5a8/0xb30 [ 111.615329][ T5517] kobject_init_and_add+0x118/0x17c [ 111.616228][ T5517] gfs2_sys_fs_add+0x1dc/0x3d8 [ 111.617058][ T5517] gfs2_fill_super+0xdec/0x19ec [ 111.617844][ T5517] get_tree_bdev+0x358/0x544 [ 111.618576][ T5517] gfs2_get_tree+0x54/0x1b4 [ 111.619343][ T5517] vfs_get_tree+0x90/0x274 [ 111.620057][ T5517] do_new_mount+0x228/0x810 [ 111.620815][ T5517] path_mount+0x5b4/0xe78 [ 111.621517][ T5517] __arm64_sys_mount+0x49c/0x584 [ 111.622270][ T5517] invoke_syscall+0x98/0x2bc [ 111.623032][ T5517] el0_svc_common+0x138/0x258 [ 111.623794][ T5517] do_el0_svc+0x58/0x13c [ 111.624461][ T5517] el0_svc+0x58/0x138 [ 111.625056][ T5517] el0t_64_sync_handler+0x84/0xf0 [ 111.625885][ T5517] el0t_64_sync+0x18c/0x190 [ 111.626745][ T5517] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 111.628990][ T5517] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 111.642419][ T5519] loop4: detected capacity change from 0 to 32768 [ 111.644148][ T5519] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 111.645405][ T5519] CPU: 1 PID: 5519 Comm: syz.4.412 Not tainted syzkaller #0 [ 111.646622][ T5519] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 111.648168][ T5519] Call trace: [ 111.648635][ T5519] dump_backtrace+0x1c8/0x1f4 [ 111.649307][ T5519] show_stack+0x2c/0x3c [ 111.649897][ T5519] __dump_stack+0x30/0x40 [ 111.650498][ T5519] dump_stack_lvl+0xf8/0x160 [ 111.651234][ T5519] dump_stack+0x1c/0x5c [ 111.651956][ T5519] sysfs_create_dir_ns+0x22c/0x24c [ 111.652741][ T5519] kobject_add_internal+0x5a8/0xb30 [ 111.653533][ T5519] kobject_init_and_add+0x118/0x17c [ 111.654323][ T5519] gfs2_sys_fs_add+0x1dc/0x3d8 [ 111.655044][ T5519] gfs2_fill_super+0xdec/0x19ec [ 111.655755][ T5519] get_tree_bdev+0x358/0x544 [ 111.656443][ T5519] gfs2_get_tree+0x54/0x1b4 [ 111.657170][ T5519] vfs_get_tree+0x90/0x274 [ 111.657909][ T5519] do_new_mount+0x228/0x810 [ 111.658667][ T5519] path_mount+0x5b4/0xe78 [ 111.659343][ T5519] __arm64_sys_mount+0x49c/0x584 [ 111.660129][ T5519] invoke_syscall+0x98/0x2bc [ 111.660898][ T5519] el0_svc_common+0x138/0x258 [ 111.661669][ T5519] do_el0_svc+0x58/0x13c [ 111.662408][ T5519] el0_svc+0x58/0x138 [ 111.662966][ T4442] gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485 [ 111.663103][ T5519] el0t_64_sync_handler+0x84/0xf0 [ 111.666281][ T5519] el0t_64_sync+0x18c/0x190 [ 111.667027][ T4442] CPU: 0 PID: 4442 Comm: syz-executor Not tainted syzkaller #0 [ 111.667342][ T5519] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 111.668202][ T4442] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 111.670446][ T5519] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 111.672190][ T4442] Call trace: [ 111.672198][ T4442] dump_backtrace+0x1c8/0x1f4 [ 111.674536][ T4442] show_stack+0x2c/0x3c [ 111.675276][ T4442] __dump_stack+0x30/0x40 [ 111.675980][ T4442] dump_stack_lvl+0xf8/0x160 [ 111.676750][ T4442] dump_stack+0x1c/0x5c [ 111.677422][ T4442] gfs2_assert_warn_i+0x16c/0x26c [ 111.678308][ T4442] gfs2_quota_cleanup+0x454/0x65c [ 111.679149][ T4442] gfs2_make_fs_ro+0x358/0x430 [ 111.679936][ T4442] gfs2_put_super+0x1e0/0x764 [ 111.680775][ T4442] generic_shutdown_super+0x130/0x324 [ 111.681733][ T4442] kill_block_super+0x70/0xdc [ 111.682454][ T4442] gfs2_kill_sb+0xc0/0xd4 [ 111.683166][ T4442] deactivate_locked_super+0xac/0x124 [ 111.684082][ T4442] deactivate_super+0xe8/0x108 [ 111.684943][ T4442] cleanup_mnt+0x37c/0x404 [ 111.685667][ T4442] __cleanup_mnt+0x20/0x30 [ 111.686363][ T4442] task_work_run+0x1ec/0x270 [ 111.687143][ T4442] do_notify_resume+0x1f70/0x2b0c [ 111.687942][ T4442] el0_svc+0x98/0x138 [ 111.688582][ T4442] el0t_64_sync_handler+0x84/0xf0 [ 111.689459][ T4442] el0t_64_sync+0x18c/0x190 [ 111.727327][ T5132] I/O error, dev loop2, sector 32640 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 111.999279][ T4562] I/O error, dev loop0, sector 32640 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 112.216057][ T5529] loop2: detected capacity change from 0 to 32768 [ 112.248135][ T5529] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 112.249392][ T5529] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 112.252681][ T5529] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms [ 112.254374][ T4427] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 112.255462][ T4427] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 112.584427][ T5534] loop0: detected capacity change from 0 to 32768 [ 112.591138][ T5534] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 112.592344][ T5534] CPU: 1 PID: 5534 Comm: syz.0.418 Not tainted syzkaller #0 [ 112.593443][ T5534] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 112.595014][ T5534] Call trace: [ 112.595517][ T5534] dump_backtrace+0x1c8/0x1f4 [ 112.596237][ T5534] show_stack+0x2c/0x3c [ 112.596861][ T5534] __dump_stack+0x30/0x40 [ 112.597519][ T5534] dump_stack_lvl+0xf8/0x160 [ 112.598214][ T5534] dump_stack+0x1c/0x5c [ 112.598860][ T5534] sysfs_create_dir_ns+0x22c/0x24c [ 112.599651][ T5534] kobject_add_internal+0x5a8/0xb30 [ 112.600456][ T5534] kobject_init_and_add+0x118/0x17c [ 112.601380][ T5534] gfs2_sys_fs_add+0x1dc/0x3d8 [ 112.602289][ T5534] gfs2_fill_super+0xdec/0x19ec [ 112.603188][ T5534] get_tree_bdev+0x358/0x544 [ 112.603974][ T5534] gfs2_get_tree+0x54/0x1b4 [ 112.604690][ T5534] vfs_get_tree+0x90/0x274 [ 112.605380][ T5534] do_new_mount+0x228/0x810 [ 112.606154][ T5534] path_mount+0x5b4/0xe78 [ 112.606901][ T5534] __arm64_sys_mount+0x49c/0x584 [ 112.607699][ T5534] invoke_syscall+0x98/0x2bc [ 112.608448][ T5534] el0_svc_common+0x138/0x258 [ 112.609199][ T5534] do_el0_svc+0x58/0x13c [ 112.609942][ T5534] el0_svc+0x58/0x138 [ 112.610555][ T5534] el0t_64_sync_handler+0x84/0xf0 [ 112.611436][ T5534] el0t_64_sync+0x18c/0x190 [ 112.612341][ T5534] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 112.614392][ T5534] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 112.629022][ T4427] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 373ms [ 112.630379][ T4427] gfs2: fsid=syz:syz.0: jid=0: Done [ 112.631262][ T5529] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 112.734075][ T5529] gfs2: fsid=syz:syz.0: found 1 quota changes [ 112.842624][ T5540] loop1: detected capacity change from 0 to 32768 [ 112.850490][ T5540] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 112.851587][ T5540] CPU: 0 PID: 5540 Comm: syz.1.421 Not tainted syzkaller #0 [ 112.852703][ T5540] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 112.854238][ T5540] Call trace: [ 112.854742][ T5540] dump_backtrace+0x1c8/0x1f4 [ 112.855467][ T5540] show_stack+0x2c/0x3c [ 112.856078][ T5540] __dump_stack+0x30/0x40 [ 112.856746][ T5540] dump_stack_lvl+0xf8/0x160 [ 112.857402][ T5540] dump_stack+0x1c/0x5c [ 112.858004][ T5540] sysfs_create_dir_ns+0x22c/0x24c [ 112.858760][ T5540] kobject_add_internal+0x5a8/0xb30 [ 112.859508][ T5540] kobject_init_and_add+0x118/0x17c [ 112.860243][ T5540] gfs2_sys_fs_add+0x1dc/0x3d8 [ 112.860941][ T5540] gfs2_fill_super+0xdec/0x19ec [ 112.861654][ T5540] get_tree_bdev+0x358/0x544 [ 112.862302][ T5540] gfs2_get_tree+0x54/0x1b4 [ 112.862956][ T5540] vfs_get_tree+0x90/0x274 [ 112.863580][ T5540] do_new_mount+0x228/0x810 [ 112.864213][ T5540] path_mount+0x5b4/0xe78 [ 112.864826][ T5540] __arm64_sys_mount+0x49c/0x584 [ 112.865534][ T5540] invoke_syscall+0x98/0x2bc [ 112.866172][ T5540] el0_svc_common+0x138/0x258 [ 112.866823][ T5540] do_el0_svc+0x58/0x13c [ 112.867493][ T5540] el0_svc+0x58/0x138 [ 112.868112][ T5540] el0t_64_sync_handler+0x84/0xf0 [ 112.868820][ T5540] el0t_64_sync+0x18c/0x190 [ 112.869644][ T5540] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 112.871801][ T5540] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 112.890301][ T5542] gfs2: fsid=syz:syz.0: gfs2_quotad: sync error -57 [ 113.013484][ T4446] gfs2: fsid=syz:syz.0: about to withdraw this file system [ 113.156169][ T4446] gfs2: fsid=syz:syz.0: Journal recovery skipped for jid 0 until next mount. [ 113.157581][ T4446] gfs2: fsid=syz:syz.0: Glock dequeues delayed: 0 [ 113.158784][ T4446] gfs2: fsid=syz:syz.0: File system withdrawn [ 113.159785][ T4446] CPU: 0 PID: 4446 Comm: syz-executor Not tainted syzkaller #0 [ 113.160989][ T4446] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 113.162594][ T4446] Call trace: [ 113.163122][ T4446] dump_backtrace+0x1c8/0x1f4 [ 113.163903][ T4446] show_stack+0x2c/0x3c [ 113.164619][ T4446] __dump_stack+0x30/0x40 [ 113.165306][ T4446] dump_stack_lvl+0xf8/0x160 [ 113.166029][ T4446] dump_stack+0x1c/0x5c [ 113.166694][ T4446] gfs2_withdraw+0xf9c/0x13a8 [ 113.167491][ T4446] gfs2_log_flush+0x16e8/0x1aa0 [ 113.168354][ T4446] do_sync+0x88c/0xa94 [ 113.169055][ T4446] gfs2_quota_sync+0x2e0/0x528 [ 113.169845][ T4446] gfs2_sync_fs+0x4c/0xc4 [ 113.170568][ T4446] sync_filesystem+0xe8/0x218 [ 113.171362][ T4446] generic_shutdown_super+0x70/0x324 [ 113.172237][ T4446] kill_block_super+0x70/0xdc [ 113.173019][ T4446] gfs2_kill_sb+0xc0/0xd4 [ 113.173708][ T4446] deactivate_locked_super+0xac/0x124 [ 113.174615][ T4446] deactivate_super+0xe8/0x108 [ 113.175341][ T4446] cleanup_mnt+0x37c/0x404 [ 113.176136][ T4446] __cleanup_mnt+0x20/0x30 [ 113.176959][ T4446] task_work_run+0x1ec/0x270 [ 113.177716][ T4446] do_notify_resume+0x1f70/0x2b0c [ 113.178475][ T4446] el0_svc+0x98/0x138 [ 113.179190][ T4446] el0t_64_sync_handler+0x84/0xf0 [ 113.180016][ T4446] el0t_64_sync+0x18c/0x190 [ 113.209523][ T5549] loop0: detected capacity change from 0 to 32768 [ 113.244924][ T4446] gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485 [ 113.247867][ T5549] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 113.249018][ T5549] CPU: 0 PID: 5549 Comm: syz.0.426 Not tainted syzkaller #0 [ 113.250211][ T5549] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 113.251645][ T5549] Call trace: [ 113.252123][ T5549] dump_backtrace+0x1c8/0x1f4 [ 113.252823][ T5549] show_stack+0x2c/0x3c [ 113.253424][ T5549] __dump_stack+0x30/0x40 [ 113.253996][ T5549] dump_stack_lvl+0xf8/0x160 [ 113.254647][ T5549] dump_stack+0x1c/0x5c [ 113.255225][ T5549] sysfs_create_dir_ns+0x22c/0x24c [ 113.256060][ T5549] kobject_add_internal+0x5a8/0xb30 [ 113.256861][ T5549] kobject_init_and_add+0x118/0x17c [ 113.257693][ T5549] gfs2_sys_fs_add+0x1dc/0x3d8 [ 113.258521][ T5549] gfs2_fill_super+0xdec/0x19ec [ 113.259252][ T5549] get_tree_bdev+0x358/0x544 [ 113.260024][ T5549] gfs2_get_tree+0x54/0x1b4 [ 113.260725][ T5549] vfs_get_tree+0x90/0x274 [ 113.261462][ T5549] do_new_mount+0x228/0x810 [ 113.262226][ T5549] path_mount+0x5b4/0xe78 [ 113.262969][ T5549] __arm64_sys_mount+0x49c/0x584 [ 113.263785][ T5549] invoke_syscall+0x98/0x2bc [ 113.264545][ T5549] el0_svc_common+0x138/0x258 [ 113.265288][ T5549] do_el0_svc+0x58/0x13c [ 113.265984][ T5549] el0_svc+0x58/0x138 [ 113.266635][ T5549] el0t_64_sync_handler+0x84/0xf0 [ 113.267439][ T5549] el0t_64_sync+0x18c/0x190 [ 113.268182][ T4446] CPU: 1 PID: 4446 Comm: syz-executor Not tainted syzkaller #0 [ 113.268254][ T5549] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 113.269283][ T4446] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 113.271174][ T5549] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 113.272822][ T4446] Call trace: [ 113.272830][ T4446] dump_backtrace+0x1c8/0x1f4 [ 113.275066][ T4446] show_stack+0x2c/0x3c [ 113.275777][ T4446] __dump_stack+0x30/0x40 [ 113.276549][ T4446] dump_stack_lvl+0xf8/0x160 [ 113.277324][ T4446] dump_stack+0x1c/0x5c [ 113.278037][ T4446] gfs2_assert_warn_i+0x16c/0x26c [ 113.278905][ T4446] gfs2_quota_cleanup+0x454/0x65c [ 113.279731][ T4446] gfs2_put_super+0x1f0/0x764 [ 113.280479][ T4446] generic_shutdown_super+0x130/0x324 [ 113.281355][ T4446] kill_block_super+0x70/0xdc [ 113.282238][ T4446] gfs2_kill_sb+0xc0/0xd4 [ 113.282992][ T4446] deactivate_locked_super+0xac/0x124 [ 113.283849][ T4446] deactivate_super+0xe8/0x108 [ 113.284676][ T4446] cleanup_mnt+0x37c/0x404 [ 113.285374][ T4446] __cleanup_mnt+0x20/0x30 [ 113.286070][ T4446] task_work_run+0x1ec/0x270 [ 113.286871][ T4446] do_notify_resume+0x1f70/0x2b0c [ 113.287727][ T4446] el0_svc+0x98/0x138 [ 113.288364][ T4446] el0t_64_sync_handler+0x84/0xf0 [ 113.289189][ T4446] el0t_64_sync+0x18c/0x190 [ 113.292185][ T4464] I/O error, dev loop1, sector 32640 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 113.383227][ T5547] loop3: detected capacity change from 0 to 32768 [ 113.386001][ T5547] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 113.387376][ T5547] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 113.394814][ T5547] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms [ 113.396483][ T4427] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 113.397435][ T4427] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 113.588005][ T5554] loop4: detected capacity change from 0 to 32768 [ 113.589750][ T5554] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 113.590926][ T5554] CPU: 0 PID: 5554 Comm: syz.4.427 Not tainted syzkaller #0 [ 113.592083][ T5554] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 113.593729][ T5554] Call trace: [ 113.594261][ T5554] dump_backtrace+0x1c8/0x1f4 [ 113.595080][ T5554] show_stack+0x2c/0x3c [ 113.595739][ T5554] __dump_stack+0x30/0x40 [ 113.596516][ T5554] dump_stack_lvl+0xf8/0x160 [ 113.597212][ T5554] dump_stack+0x1c/0x5c [ 113.597876][ T5554] sysfs_create_dir_ns+0x22c/0x24c [ 113.598670][ T5554] kobject_add_internal+0x5a8/0xb30 [ 113.599538][ T5554] kobject_init_and_add+0x118/0x17c [ 113.600425][ T5554] gfs2_sys_fs_add+0x1dc/0x3d8 [ 113.601169][ T5554] gfs2_fill_super+0xdec/0x19ec [ 113.601943][ T5554] get_tree_bdev+0x358/0x544 [ 113.602665][ T5554] gfs2_get_tree+0x54/0x1b4 [ 113.603455][ T5554] vfs_get_tree+0x90/0x274 [ 113.604214][ T5554] do_new_mount+0x228/0x810 [ 113.605010][ T5554] path_mount+0x5b4/0xe78 [ 113.605772][ T5554] __arm64_sys_mount+0x49c/0x584 [ 113.606570][ T5554] invoke_syscall+0x98/0x2bc [ 113.607297][ T5554] el0_svc_common+0x138/0x258 [ 113.608068][ T5554] do_el0_svc+0x58/0x13c [ 113.608792][ T5554] el0_svc+0x58/0x138 [ 113.609471][ T5554] el0t_64_sync_handler+0x84/0xf0 [ 113.610294][ T5554] el0t_64_sync+0x18c/0x190 [ 113.611173][ T5554] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 113.613350][ T5554] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 113.615864][ T4427] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 218ms [ 113.617245][ T4427] gfs2: fsid=syz:syz.0: jid=0: Done [ 113.618093][ T5547] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 113.721809][ T4525] I/O error, dev loop0, sector 32640 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 113.795828][ T5557] loop1: detected capacity change from 0 to 32768 [ 113.801221][ T5557] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 113.803068][ T5557] CPU: 1 PID: 5557 Comm: syz.1.428 Not tainted syzkaller #0 [ 113.804240][ T5557] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 113.805746][ T5557] Call trace: [ 113.806217][ T5557] dump_backtrace+0x1c8/0x1f4 [ 113.806884][ T5557] show_stack+0x2c/0x3c [ 113.807616][ T5557] __dump_stack+0x30/0x40 [ 113.808286][ T5557] dump_stack_lvl+0xf8/0x160 [ 113.809019][ T5557] dump_stack+0x1c/0x5c [ 113.809677][ T5557] sysfs_create_dir_ns+0x22c/0x24c [ 113.810481][ T5557] kobject_add_internal+0x5a8/0xb30 [ 113.811296][ T5557] kobject_init_and_add+0x118/0x17c [ 113.812128][ T5557] gfs2_sys_fs_add+0x1dc/0x3d8 [ 113.812907][ T5557] gfs2_fill_super+0xdec/0x19ec [ 113.813676][ T5557] get_tree_bdev+0x358/0x544 [ 113.814438][ T5557] gfs2_get_tree+0x54/0x1b4 [ 113.815184][ T5557] vfs_get_tree+0x90/0x274 [ 113.815931][ T5557] do_new_mount+0x228/0x810 [ 113.816738][ T5557] path_mount+0x5b4/0xe78 [ 113.817508][ T5557] __arm64_sys_mount+0x49c/0x584 [ 113.818327][ T5557] invoke_syscall+0x98/0x2bc [ 113.819033][ T5557] el0_svc_common+0x138/0x258 [ 113.819747][ T5557] do_el0_svc+0x58/0x13c [ 113.820402][ T5557] el0_svc+0x58/0x138 [ 113.821034][ T5557] el0t_64_sync_handler+0x84/0xf0 [ 113.821773][ T5557] el0t_64_sync+0x18c/0x190 [ 113.822480][ T5557] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 113.824385][ T5557] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 113.861135][ T5560] gfs2: fsid=syz:syz.0: gfs2_quotad: sync error -57 [ 113.882482][ T5547] gfs2: fsid=syz:syz.0: found 1 quota changes [ 113.968775][ T5559] loop2: detected capacity change from 0 to 32768 [ 113.973849][ T5559] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 113.975015][ T5559] CPU: 0 PID: 5559 Comm: syz.2.429 Not tainted syzkaller #0 [ 113.976216][ T5559] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 113.977876][ T5559] Call trace: [ 113.978401][ T5559] dump_backtrace+0x1c8/0x1f4 [ 113.979181][ T5559] show_stack+0x2c/0x3c [ 113.979825][ T5559] __dump_stack+0x30/0x40 [ 113.980502][ T5559] dump_stack_lvl+0xf8/0x160 [ 113.981239][ T5559] dump_stack+0x1c/0x5c [ 113.981918][ T5559] sysfs_create_dir_ns+0x22c/0x24c [ 113.982744][ T5559] kobject_add_internal+0x5a8/0xb30 [ 113.983629][ T5559] kobject_init_and_add+0x118/0x17c [ 113.984524][ T5559] gfs2_sys_fs_add+0x1dc/0x3d8 [ 113.985260][ T5559] gfs2_fill_super+0xdec/0x19ec [ 113.986053][ T5559] get_tree_bdev+0x358/0x544 [ 113.986812][ T5559] gfs2_get_tree+0x54/0x1b4 [ 113.987626][ T5559] vfs_get_tree+0x90/0x274 [ 113.988331][ T5559] do_new_mount+0x228/0x810 [ 113.989089][ T5559] path_mount+0x5b4/0xe78 [ 113.989740][ T5559] __arm64_sys_mount+0x49c/0x584 [ 113.990466][ T5559] invoke_syscall+0x98/0x2bc [ 113.991226][ T5559] el0_svc_common+0x138/0x258 [ 113.991945][ T5559] do_el0_svc+0x58/0x13c [ 113.992605][ T5559] el0_svc+0x58/0x138 [ 113.993243][ T5559] el0t_64_sync_handler+0x84/0xf0 [ 113.994169][ T5559] el0t_64_sync+0x18c/0x190 [ 113.995002][ T5559] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 113.996903][ T5559] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 114.067390][ T5562] loop0: detected capacity change from 0 to 32768 [ 114.069203][ T5562] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 114.070464][ T5562] CPU: 1 PID: 5562 Comm: syz.0.430 Not tainted syzkaller #0 [ 114.071690][ T5562] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 114.073425][ T5562] Call trace: [ 114.073980][ T5562] dump_backtrace+0x1c8/0x1f4 [ 114.074784][ T5562] show_stack+0x2c/0x3c [ 114.075471][ T5562] __dump_stack+0x30/0x40 [ 114.076204][ T5562] dump_stack_lvl+0xf8/0x160 [ 114.076967][ T5562] dump_stack+0x1c/0x5c [ 114.077579][ T5562] sysfs_create_dir_ns+0x22c/0x24c [ 114.078341][ T5562] kobject_add_internal+0x5a8/0xb30 [ 114.079252][ T5562] kobject_init_and_add+0x118/0x17c [ 114.080138][ T5562] gfs2_sys_fs_add+0x1dc/0x3d8 [ 114.080960][ T5562] gfs2_fill_super+0xdec/0x19ec [ 114.081792][ T5562] get_tree_bdev+0x358/0x544 [ 114.082574][ T5562] gfs2_get_tree+0x54/0x1b4 [ 114.083270][ T5562] vfs_get_tree+0x90/0x274 [ 114.083984][ T5562] do_new_mount+0x228/0x810 [ 114.084679][ T5562] path_mount+0x5b4/0xe78 [ 114.085325][ T5562] __arm64_sys_mount+0x49c/0x584 [ 114.086079][ T5562] invoke_syscall+0x98/0x2bc [ 114.086728][ T5562] el0_svc_common+0x138/0x258 [ 114.087511][ T5562] do_el0_svc+0x58/0x13c [ 114.088230][ T5562] el0_svc+0x58/0x138 [ 114.088974][ T5562] el0t_64_sync_handler+0x84/0xf0 [ 114.089865][ T5562] el0t_64_sync+0x18c/0x190 [ 114.090666][ T5562] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 114.092808][ T5562] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 114.116557][ T51] [ 114.116971][ T51] ============================================ [ 114.117979][ T51] WARNING: possible recursive locking detected [ 114.118979][ T51] syzkaller #0 Not tainted [ 114.119666][ T51] -------------------------------------------- [ 114.120612][ T51] kworker/1:1H/51 is trying to acquire lock: [ 114.121551][ T51] ffff0000f2a5c580 (&gl->gl_lockref.lock){+.+.}-{2:2}, at: lockref_get+0x20/0x78 [ 114.122998][ T51] [ 114.122998][ T51] but task is already holding lock: [ 114.124200][ T51] ffff0000f2a5c580 (&gl->gl_lockref.lock){+.+.}-{2:2}, at: glock_work_func+0x98/0x428 [ 114.125769][ T51] [ 114.125769][ T51] other info that might help us debug this: [ 114.127058][ T51] Possible unsafe locking scenario: [ 114.127058][ T51] [ 114.128222][ T51] CPU0 [ 114.128758][ T51] ---- [ 114.129248][ T51] lock(&gl->gl_lockref.lock); [ 114.130020][ T51] lock(&gl->gl_lockref.lock); [ 114.130755][ T51] [ 114.130755][ T51] *** DEADLOCK *** [ 114.130755][ T51] [ 114.132013][ T51] May be due to missing lock nesting notation [ 114.132013][ T51] [ 114.133146][ T51] 3 locks held by kworker/1:1H/51: [ 114.133858][ T51] #0: ffff0000c74e4d38 ((wq_completion)glock_workqueue){+.+.}-{0:0}, at: process_one_work+0x6b4/0x13a8 [ 114.135616][ T51] #1: ffff80001ce47c20 ((work_completion)(&(&gl->gl_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6f8/0x13a8 [ 114.137536][ T51] #2: ffff0000f2a5c580 (&gl->gl_lockref.lock){+.+.}-{2:2}, at: glock_work_func+0x98/0x428 [ 114.138986][ T51] [ 114.138986][ T51] stack backtrace: [ 114.139950][ T51] CPU: 1 PID: 51 Comm: kworker/1:1H Not tainted syzkaller #0 [ 114.141108][ T51] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 114.142647][ T51] Workqueue: glock_workqueue glock_work_func [ 114.143530][ T51] Call trace: [ 114.144041][ T51] dump_backtrace+0x1c8/0x1f4 [ 114.144740][ T51] show_stack+0x2c/0x3c [ 114.145465][ T51] __dump_stack+0x30/0x40 [ 114.146161][ T51] dump_stack_lvl+0xf8/0x160 [ 114.146855][ T51] dump_stack+0x1c/0x5c [ 114.147520][ T51] __lock_acquire+0x18b4/0x6544 [ 114.148330][ T51] lock_acquire+0x20c/0x644 [ 114.149034][ T51] _raw_spin_lock+0x54/0x6c [ 114.149772][ T51] lockref_get+0x20/0x78 [ 114.150475][ T51] do_xmote+0x4d8/0x1198 [ 114.151138][ T51] run_queue+0x458/0x690 [ 114.151859][ T51] glock_work_func+0x1fc/0x428 [ 114.152609][ T51] process_one_work+0x7f4/0x13a8 [ 114.153353][ T51] worker_thread+0x8c8/0xfbc [ 114.154066][ T51] kthread+0x250/0x2d8 [ 114.154777][ T51] ret_from_fork+0x10/0x20 [ 114.249662][ T4464] I/O error, dev loop1, sector 32640 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 114.253377][ T5132] I/O error, dev loop2, sector 32640 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 114.586937][ T5569] loop4: detected capacity change from 0 to 32768 [ 114.588522][ T5569] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 114.589745][ T5569] CPU: 0 PID: 5569 Comm: syz.4.433 Not tainted syzkaller #0 [ 114.590899][ T5569] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 114.592388][ T5569] Call trace: [ 114.592875][ T5569] dump_backtrace+0x1c8/0x1f4 [ 114.593582][ T5569] show_stack+0x2c/0x3c [ 114.594160][ T5569] __dump_stack+0x30/0x40 [ 114.594764][ T5569] dump_stack_lvl+0xf8/0x160 [ 114.595477][ T5569] dump_stack+0x1c/0x5c [ 114.596106][ T5569] sysfs_create_dir_ns+0x22c/0x24c [ 114.596870][ T5569] kobject_add_internal+0x5a8/0xb30 [ 114.597728][ T5569] kobject_init_and_add+0x118/0x17c [ 114.598557][ T5569] gfs2_sys_fs_add+0x1dc/0x3d8 [ 114.599328][ T5569] gfs2_fill_super+0xdec/0x19ec [ 114.600096][ T5569] get_tree_bdev+0x358/0x544 [ 114.600833][ T5569] gfs2_get_tree+0x54/0x1b4 [ 114.601539][ T5569] vfs_get_tree+0x90/0x274 [ 114.602217][ T5569] do_new_mount+0x228/0x810 [ 114.602888][ T5569] path_mount+0x5b4/0xe78 [ 114.603600][ T5569] __arm64_sys_mount+0x49c/0x584 [ 114.604340][ T5569] invoke_syscall+0x98/0x2bc [ 114.605032][ T5569] el0_svc_common+0x138/0x258 [ 114.605758][ T5569] do_el0_svc+0x58/0x13c [ 114.606493][ T5569] el0_svc+0x58/0x138 [ 114.607189][ T5569] el0t_64_sync_handler+0x84/0xf0 [ 114.607966][ T5569] el0t_64_sync+0x18c/0x190 [ 114.609103][ T5569] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 114.611184][ T5569] gfs2: fsid=syz:syz: error -17 adding sysfs files