syz.0.124: attempt to access beyond end of device loop0: rw=0, sector=6491536, nr_sectors = 2 limit=128 Buffer I/O error on dev loop0, logical block 3245768, async page read ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4967 at fs/inode.c:389 inc_nlink+0x128/0x154 fs/inode.c:389 Modules linked in: CPU: 1 PID: 4967 Comm: syz.0.124 Tainted: G W 6.1.121-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : inc_nlink+0x128/0x154 fs/inode.c:389 lr : inc_nlink+0x128/0x154 fs/inode.c:389 sp : ffff800021e57b70 x29: ffff800021e57b70 x28: dfff800000000000 x27: 0000000000000000 x26: 1fffe0001e7fd815 x25: ffff800012714688 x24: 00000000000001c0 x23: 1fffe0001e6dd810 x22: dfff800000000000 x21: 0000000000000000 x20: ffff0000f36ec038 x19: ffff0000f36ec080 x18: ffff800021e573c0 x17: ffff800018b7b000 x16: ffff80001232b49c x15: 0000000000000002 x14: 00000000ffff8000 x13: 000000006b9f4420 x12: 0000000000080000 x11: 000000000000d95a x10: ffff80002613b000 x9 : ffff800008aaed64 x8 : 000000000000d95b x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000001 x3 : 00000000000001c0 x2 : ffff0000cfa1ed38 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: inc_nlink+0x128/0x154 fs/inode.c:389 inode_inc_link_count include/linux/fs.h:2576 [inline] sysv_mkdir+0x2c/0x138 fs/sysv/namei.c:119 vfs_mkdir+0x334/0x4e4 fs/namei.c:4106 do_mkdirat+0x220/0x510 fs/namei.c:4131 __do_sys_mkdirat fs/namei.c:4146 [inline] __se_sys_mkdirat fs/namei.c:4144 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4144 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 irq event stamp: 216 hardirqs last enabled at (215): [] kasan_quarantine_put+0xdc/0x204 mm/kasan/quarantine.c:242 hardirqs last disabled at (216): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (174): [] softirq_handle_end kernel/softirq.c:414 [inline] softirqs last enabled at (174): [] handle_softirqs+0xb84/0xd58 kernel/softirq.c:599 softirqs last disabled at (169): [] __do_softirq+0x14/0x20 kernel/softirq.c:605 ---[ end trace 0000000000000000 ]--- unable to read i-node block sysv_free_inode: unable to read inode block on device loop0