Warning: Permanently added '10.128.0.52' (ED25519) to the list of known hosts. executing program [ 84.946734][ T4314] loop0: detected capacity change from 0 to 32768 [ 84.963879][ T4314] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [ 84.969858][ T4314] ================================================================== [ 84.972066][ T4314] BUG: KASAN: use-after-free in ocfs2_claim_suballoc_bits+0x88c/0x1bfc [ 84.974336][ T4314] Read of size 4 at addr ffff0000e526f000 by task syz-executor223/4314 [ 84.976710][ T4314] [ 84.977361][ T4314] CPU: 1 PID: 4314 Comm: syz-executor223 Not tainted 6.1.140-syzkaller #0 [ 84.979607][ T4314] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 84.982289][ T4314] Call trace: [ 84.983241][ T4314] dump_backtrace+0x1c8/0x1f4 [ 84.984596][ T4314] show_stack+0x2c/0x3c [ 84.985738][ T4314] __dump_stack+0x30/0x40 [ 84.986992][ T4314] dump_stack_lvl+0xf8/0x160 [ 84.988278][ T4314] print_address_description+0x88/0x220 [ 84.989861][ T4314] print_report+0x50/0x68 [ 84.991125][ T4314] kasan_report+0xa8/0x100 [ 84.992305][ T4314] __asan_report_load4_noabort+0x2c/0x38 [ 84.993900][ T4314] ocfs2_claim_suballoc_bits+0x88c/0x1bfc [ 84.995420][ T4314] ocfs2_claim_new_inode+0x2e8/0x700 [ 84.996947][ T4314] ocfs2_mknod_locked+0xfc/0x228 [ 84.998393][ T4314] ocfs2_mknod+0xe64/0x1f18 [ 84.999572][ T4314] ocfs2_mkdir+0x19c/0x4f0 [ 85.000767][ T4314] vfs_mkdir+0x314/0x4d4 [ 85.001901][ T4314] do_mkdirat+0x1b4/0x3e0 [ 85.003029][ T4314] __arm64_sys_mkdirat+0x90/0xa8 [ 85.004348][ T4314] invoke_syscall+0x98/0x2bc [ 85.005544][ T4314] el0_svc_common+0x138/0x258 [ 85.006874][ T4314] do_el0_svc+0x58/0x13c [ 85.007983][ T4314] el0_svc+0x58/0x138 [ 85.009073][ T4314] el0t_64_sync_handler+0x84/0xf0 [ 85.010336][ T4314] el0t_64_sync+0x18c/0x190 [ 85.011527][ T4314] [ 85.012212][ T4314] The buggy address belongs to the physical page: [ 85.014037][ T4314] page:00000000fc2da8a5 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x12526f [ 85.016959][ T4314] flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff) [ 85.018762][ T4314] raw: 05ffc00000000000 fffffc0003949c08 ffff00019f751e20 0000000000000000 [ 85.020778][ T4314] raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 [ 85.023165][ T4314] page dumped because: kasan: bad access detected [ 85.025012][ T4314] [ 85.025660][ T4314] Memory state around the buggy address: [ 85.027239][ T4314] ffff0000e526ef00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 85.029557][ T4314] ffff0000e526ef80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 85.032005][ T4314] >ffff0000e526f000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 85.034378][ T4314] ^ [ 85.035567][ T4314] ffff0000e526f080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 85.037872][ T4314] ffff0000e526f100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 85.040166][ T4314] ================================================================== [ 85.042713][ T4314] Disabling lock debugging due to kernel taint [ 85.045500][ T4314] OCFS2: ERROR (device loop0): int ocfs2_validate_gd_self(struct super_block *, struct buffer_head *, int): Group descriptor #0 has bad signature  [ 85.049711][ T4314] On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted. [ 85.052650][ T4314] OCFS2: File system is now read-only. [ 85.054146][ T4314] (syz-executor223,4314,1):ocfs2_search_chain:1761 ERROR: status = -30 [ 85.056384][ T4314] (syz-executor223,4314,1):ocfs2_search_chain:1871 ERROR: status = -30 [ 85.058632][ T4314] (syz-executor223,4314,1):ocfs2_claim_suballoc_bits:1940 ERROR: status = -30 [ 85.061155][ T4314] (syz-executor223,4314,1):ocfs2_claim_suballoc_bits:1983 ERROR: status = -30 [ 85.063557][ T4314] (syz-executor223,4314,1):ocfs2_claim_new_inode:2216 ERROR: status = -30 [ 85.065937][ T4314] (syz-executor223,4314,1):ocfs2_claim_new_inode:2231 ERROR: status = -30 [ 85.068280][ T4314] (syz-executor223,4314,1):ocfs2_mknod_locked:639 ERROR: status = -30 [ 85.070411][ T4314] (syz-executor223,4314,1):ocfs2_mknod:385 ERROR: status = -30 [ 85.072668][ T4314] (syz-executor223,4314,1):ocfs2_mknod:502 ERROR: status = -30 [ 85.074653][ T4314] (syz-executor223,4314,1):ocfs2_mkdir:659 ERROR: status = -30 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program