Warning: Permanently added '10.128.1.90' (ED25519) to the list of known hosts. executing program [ 57.486698][ T4022] loop0: detected capacity change from 0 to 128 [ 57.567380][ T4022] VFS: Found a Xenix FS (block size = 1024) on device loop0 [ 57.574033][ T4022] attempt to access beyond end of device [ 57.574033][ T4022] loop0: rw=0, want=6491538, limit=128 [ 57.577337][ T4022] Buffer I/O error on dev loop0, logical block 3245768, async page read [ 57.579983][ T4022] ================================================================== [ 57.582358][ T4022] BUG: KASAN: use-after-free in sysv_new_inode+0xd54/0xec8 [ 57.584390][ T4022] Read of size 2 at addr ffff0000dd1521ce by task syz-executor195/4022 [ 57.587035][ T4022] [ 57.587713][ T4022] CPU: 0 PID: 4022 Comm: syz-executor195 Not tainted 5.15.181-syzkaller #0 [ 57.590153][ T4022] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 [ 57.593042][ T4022] Call trace: [ 57.593991][ T4022] dump_backtrace+0x0/0x43c [ 57.595326][ T4022] show_stack+0x2c/0x3c [ 57.596524][ T4022] __dump_stack+0x30/0x40 [ 57.597884][ T4022] dump_stack_lvl+0xf8/0x160 [ 57.599191][ T4022] print_address_description+0x78/0x30c [ 57.600825][ T4022] kasan_report+0xec/0x15c [ 57.602073][ T4022] __asan_report_load2_noabort+0x44/0x50 [ 57.603728][ T4022] sysv_new_inode+0xd54/0xec8 [ 57.605056][ T4022] sysv_mknod+0x5c/0x100 [ 57.606312][ T4022] sysv_create+0x38/0x4c [ 57.607483][ T4022] path_openat+0x1144/0x26e4 [ 57.608832][ T4022] do_filp_open+0x164/0x330 [ 57.610215][ T4022] do_sys_openat2+0x128/0x3d8 [ 57.611558][ T4022] __arm64_sys_openat+0x120/0x154 [ 57.613059][ T4022] invoke_syscall+0x98/0x2b8 [ 57.614379][ T4022] el0_svc_common+0x138/0x258 [ 57.615827][ T4022] do_el0_svc+0x58/0x14c [ 57.617256][ T4022] el0_svc+0x78/0x1e0 [ 57.618355][ T4022] el0t_64_sync_handler+0xcc/0xe4 [ 57.619816][ T4022] el0t_64_sync+0x1a0/0x1a4 [ 57.621090][ T4022] [ 57.621723][ T4022] The buggy address belongs to the page: [ 57.623325][ T4022] page:0000000098182578 refcount:0 mapcount:-128 mapping:0000000000000000 index:0x100 pfn:0x11d152 [ 57.626356][ T4022] flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff) [ 57.628428][ T4022] raw: 05ffc00000000000 fffffc00062737c8 fffffc000627e708 0000000000000000 [ 57.630928][ T4022] raw: 0000000000000100 0000000000000000 00000000ffffff7f 0000000000000000 [ 57.633395][ T4022] page dumped because: kasan: bad access detected [ 57.635211][ T4022] [ 57.635869][ T4022] Memory state around the buggy address: [ 57.637437][ T4022] ffff0000dd152080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 57.639730][ T4022] ffff0000dd152100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 57.642050][ T4022] >ffff0000dd152180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 57.644318][ T4022] ^ [ 57.646144][ T4022] ffff0000dd152200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 57.648465][ T4022] ffff0000dd152280: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 57.650786][ T4022] ================================================================== [ 57.652984][ T4022] Disabling lock debugging due to kernel taint [ 57.659705][ T4022] attempt to access beyond end of device [ 57.659705][ T4022] loop0: rw=0, want=6491538, limit=128 [ 57.662824][ T4022] Buffer I/O error on dev loop0, logical block 3245768, async page read 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 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 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 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 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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 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 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 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 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 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 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 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