------------[ cut here ]------------ WARNING: CPU: 1 PID: 7090 at fs/buffer.c:1125 __getblk_slow fs/buffer.c:1125 [inline] WARNING: CPU: 1 PID: 7090 at fs/buffer.c:1125 bdev_getblk+0x530/0x5f0 fs/buffer.c:1461 Modules linked in: CPU: 1 UID: 0 PID: 7090 Comm: syz.2.95 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : __getblk_slow fs/buffer.c:1125 [inline] pc : bdev_getblk+0x530/0x5f0 fs/buffer.c:1461 lr : __getblk_slow fs/buffer.c:1125 [inline] lr : bdev_getblk+0x530/0x5f0 fs/buffer.c:1461 sp : ffff80009c957440 x29: ffff80009c957480 x28: dfff800000000000 x27: dfff800000000000 x26: 1fffe0001a3ef403 x25: dfff800000000000 x24: 0000000000000200 x23: ffff0000c14a0b98 x22: 0000000000108c48 x21: 0000000000000100 x20: 1fffe00018294173 x19: 0000000000000200 x18: 00000000ffffffff x17: ffff800093523000 x16: ffff800080528c60 x15: 0000000000000003 x14: 0000000000000000 x13: 0000000000000406 x12: 0000000000ff0100 x11: 00000000736f2b88 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000cbe58000 x7 : ffff800080baa914 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000000000200 x0 : 0000000000000000 Call trace: __getblk_slow fs/buffer.c:1125 [inline] (P) bdev_getblk+0x530/0x5f0 fs/buffer.c:1461 (P) __bread_gfp+0x90/0x34c fs/buffer.c:1515 sb_bread include/linux/buffer_head.h:346 [inline] udf_read_tagged+0x9c/0xaf0 fs/udf/misc.c:199 udf_check_anchor_block+0x9c/0x44c fs/udf/super.c:1912 udf_scan_anchors fs/udf/super.c:1952 [inline] udf_load_vrs+0x5a8/0xcb0 fs/udf/super.c:2033 udf_fill_super+0x444/0x1388 fs/udf/super.c:2201 get_tree_bdev_flags+0x360/0x414 fs/super.c:1692 get_tree_bdev+0x2c/0x3c fs/super.c:1715 udf_get_tree+0x28/0x38 fs/udf/super.c:128 vfs_get_tree+0x90/0x28c fs/super.c:1815 do_new_mount+0x278/0x7f4 fs/namespace.c:3808 path_mount+0x5b4/0xde0 fs/namespace.c:4123 do_mount fs/namespace.c:4136 [inline] __do_sys_mount fs/namespace.c:4347 [inline] __se_sys_mount fs/namespace.c:4324 [inline] __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4324 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 186 hardirqs last enabled at (185): [] lookup_bh_lru fs/buffer.c:1390 [inline] hardirqs last enabled at (185): [] find_get_block_common+0x334/0xde8 fs/buffer.c:1404 hardirqs last disabled at (186): [] el1_brk64+0x1c/0x48 arch/arm64/kernel/entry-common.c:574 softirqs last enabled at (8): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (6): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- getblk(): block size 512 not aligned to logical block size 1024 UDF-fs: error (device nbd2): udf_read_tagged: read failed, block=256, location=256 getblk(): block size 512 not aligned to logical block size 1024 UDF-fs: error (device nbd2): udf_read_tagged: read failed, block=512, location=512 block nbd2: Dead connection, failed to find a fallback block nbd2: shutting down sockets I/O error, dev nbd2, sector 64 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 I/O error, dev nbd2, sector 512 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 UDF-fs: error (device nbd2): udf_read_tagged: read failed, block=256, location=256 I/O error, dev nbd2, sector 1024 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 UDF-fs: error (device nbd2): udf_read_tagged: read failed, block=512, location=512 I/O error, dev nbd2, sector 64 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 I/O error, dev nbd2, sector 1024 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 UDF-fs: error (device nbd2): udf_read_tagged: read failed, block=256, location=256 I/O error, dev nbd2, sector 2048 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 UDF-fs: error (device nbd2): udf_read_tagged: read failed, block=512, location=512 I/O error, dev nbd2, sector 64 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 I/O error, dev nbd2, sector 2048 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 UDF-fs: error (device nbd2): udf_read_tagged: read failed, block=256, location=256 I/O error, dev nbd2, sector 4096 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 UDF-fs: error (device nbd2): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd2): udf_fill_super: No partition found (1)