Warning: Permanently added '10.128.1.72' (ED25519) to the list of known hosts. executing program syzkaller login: [ 38.043647][ T4293] loop0: detected capacity change from 0 to 128 [ 38.049717][ T4293] VFS: Found a Xenix FS (block size = 1024) on device loop0 [ 38.053153][ T4293] syz-executor194: attempt to access beyond end of device [ 38.053153][ T4293] loop0: rw=0, sector=6491536, nr_sectors = 2 limit=128 [ 38.056994][ T4293] Buffer I/O error on dev loop0, logical block 3245768, async page read [ 38.060215][ T4293] ------------[ cut here ]------------ [ 38.061671][ T4293] WARNING: CPU: 0 PID: 4293 at fs/inode.c:389 inc_nlink+0x128/0x154 [ 38.063827][ T4293] Modules linked in: [ 38.064900][ T4293] CPU: 0 PID: 4293 Comm: syz-executor194 Not tainted 6.1.138-syzkaller #0 [ 38.067236][ T4293] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 38.069934][ T4293] pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 38.072011][ T4293] pc : inc_nlink+0x128/0x154 [ 38.073264][ T4293] lr : inc_nlink+0x128/0x154 [ 38.074548][ T4293] sp : ffff8000206f7b90 [ 38.075641][ T4293] x29: ffff8000206f7b90 x28: dfff800000000000 x27: 0000000000000000 [ 38.077836][ T4293] x26: 1fffe0001c1c480c x25: ffff800011d04e88 x24: 0000000000000000 [ 38.080165][ T4293] x23: 1fffe0001c1c4810 x22: dfff800000000000 x21: 0000000000000000 [ 38.082333][ T4293] x20: ffff0000e0e24038 x19: ffff0000e0e24080 x18: 000000000000006d [ 38.084482][ T4293] x17: 0000000000000000 x16: ffff8000082d1408 x15: 0000000000000000 [ 38.086637][ T4293] x14: 00000000ffff8000 x13: 00000000d76fd34f x12: 0000000000ff0100 [ 38.088793][ T4293] x11: ff008000089fad84 x10: 0000000000000000 x9 : ffff8000089fad84 [ 38.090966][ T4293] x8 : ffff0000d316d340 x7 : 0000000000000000 x6 : 000000000000003f [ 38.093204][ T4293] x5 : 0000000000000040 x4 : 0000000000000001 x3 : 0000000000000000 [ 38.095352][ T4293] x2 : ffff0000df49f028 x1 : 0000000000000000 x0 : 0000000000000000 [ 38.097499][ T4293] Call trace: [ 38.098353][ T4293] inc_nlink+0x128/0x154 [ 38.099510][ T4293] sysv_mkdir+0x2c/0x138 [ 38.100613][ T4293] vfs_mkdir+0x314/0x4d4 [ 38.101739][ T4293] do_mkdirat+0x1b4/0x3e0 [ 38.102923][ T4293] __arm64_sys_mkdirat+0x90/0xa8 [ 38.104279][ T4293] invoke_syscall+0x98/0x2bc [ 38.105620][ T4293] el0_svc_common+0x138/0x258 [ 38.106862][ T4293] do_el0_svc+0x58/0x13c [ 38.107971][ T4293] el0_svc+0x58/0x138 [ 38.109034][ T4293] el0t_64_sync_handler+0x84/0xf0 [ 38.110434][ T4293] el0t_64_sync+0x18c/0x190 [ 38.111640][ T4293] irq event stamp: 18092 [ 38.112803][ T4293] hardirqs last enabled at (18091): [] kasan_quarantine_put+0xc4/0x204 [ 38.115579][ T4293] hardirqs last disabled at (18092): [] el1_dbg+0x24/0x80 [ 38.117969][ T4293] softirqs last enabled at (18050): [] handle_softirqs+0xaf8/0xc6c [ 38.120567][ T4293] softirqs last disabled at (17929): [] __do_softirq+0x14/0x20 [ 38.123142][ T4293] ---[ end trace 0000000000000000 ]--- [ 38.128029][ T4293] unable to read i-node block [ 38.129691][ T4293] syz-executor194: attempt to access beyond end of device [ 38.129691][ T4293] loop0: rw=0, sector=6491536, nr_sectors = 2 limit=128 [ 38.133891][ T4293] Buffer I/O error on dev loop0, logical block 3245768, async page read [ 38.136404][ T4293] sysv_free_block: flc_count > flc_size [ 38.137964][ T4293] sysv_free_inode: unable to read inode block on device loop0