------------[ cut here ]------------ WARNING: fs/udf/inode.c:684 at udf_extend_file fs/udf/inode.c:683 [inline], CPU#0: syz.4.3055/16027 WARNING: fs/udf/inode.c:684 at udf_setsize+0xac8/0xd30 fs/udf/inode.c:1300, CPU#0: syz.4.3055/16027 Modules linked in: CPU: 0 UID: 0 PID: 16027 Comm: syz.4.3055 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 83400305 (Nzcv DAif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : udf_extend_file fs/udf/inode.c:683 [inline] pc : udf_setsize+0xac8/0xd30 fs/udf/inode.c:1300 lr : udf_extend_file fs/udf/inode.c:683 [inline] lr : udf_setsize+0xac8/0xd30 fs/udf/inode.c:1300 sp : ffff80009f6d7900 x29: ffff80009f6d79e0 x28: 1fffe0001cbe0266 x27: dfff800000000000 x26: 0000000000000200 x25: 0000000000001000 x24: 0000000000000001 x23: 0000000000000001 x22: ffff0000e5f01330 x21: ffff0000e5f0150a x20: 0000000000000020 x19: ffff0000e5f01448 x18: 1fffe0003377d090 x17: ffff80008f86e000 x16: ffff800080544d7c x15: 0000000000000001 x14: 1fffe0001cbe0281 x13: 0000000000000000 x12: 0000000000000000 x11: ffff60001cbe0282 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000ce061c80 x7 : 00000037000000c0 x6 : 0000000000000000 x5 : ffff0000e5f01400 x4 : ffff80009f6d7998 x3 : ffff800080544e84 x2 : 0000000000000001 x1 : 0000000000001000 x0 : 0000000000000200 Call trace: udf_extend_file fs/udf/inode.c:683 [inline] (P) udf_setsize+0xac8/0xd30 fs/udf/inode.c:1300 (P) udf_setattr+0x2b0/0x454 fs/udf/file.c:236 notify_change+0xa0c/0xcb8 fs/attr.c:546 do_truncate+0x198/0x210 fs/open.c:68 do_ftruncate+0x3c0/0x470 fs/open.c:195 do_sys_ftruncate fs/open.c:207 [inline] __do_sys_ftruncate fs/open.c:212 [inline] __se_sys_ftruncate fs/open.c:210 [inline] __arm64_sys_ftruncate+0x90/0xe8 fs/open.c:210 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 128 hardirqs last enabled at (127): [] seqcount_lockdep_reader_access+0x7c/0xf8 include/linux/seqlock.h:74 hardirqs last disabled at (128): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:412 softirqs last enabled at (96): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (94): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- UDF-fs: warning (device loop4): udf_truncate_tail_extent: Too long extent after EOF in inode 1367: i_size: 32 lbcount: 4096 extent 56+4096