usb read operation failed. (-71) ------------[ cut here ]------------ UBSAN: array-index-out-of-bounds in drivers/media/usb/dvb-usb-v2/az6007.c:821:30 index 4096 is out of range for type 'unsigned char [4096]' CPU: 1 UID: 0 PID: 5832 Comm: syz-executor328 Not tainted 6.15.0-rc2-syzkaller-00493-gac71fabf1567 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x16c/0x1f0 lib/dump_stack.c:120 ubsan_epilogue lib/ubsan.c:231 [inline] __ubsan_handle_out_of_bounds+0x11c/0x160 lib/ubsan.c:453 az6007_i2c_xfer+0x549/0xc30 drivers/media/usb/dvb-usb-v2/az6007.c:821 __i2c_transfer+0x6b3/0x2190 drivers/i2c/i2c-core-base.c:2259 i2c_transfer drivers/i2c/i2c-core-base.c:2315 [inline] i2c_transfer+0x1da/0x380 drivers/i2c/i2c-core-base.c:2291 i2c_transfer_buffer_flags+0x10c/0x190 drivers/i2c/i2c-core-base.c:2343 i2c_master_recv include/linux/i2c.h:79 [inline] i2cdev_read+0x111/0x280 drivers/i2c/i2c-dev.c:155 do_loop_readv_writev fs/read_write.c:845 [inline] do_loop_readv_writev fs/read_write.c:833 [inline] vfs_readv+0x6bc/0x8a0 fs/read_write.c:1018 do_preadv+0x1af/0x270 fs/read_write.c:1130 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4d458f3929 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe002f51e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007ffe002f5230 RCX: 00007f4d458f3929 RDX: 0000000000000001 RSI: 00002000000025c0 RDI: 0000000000000004 RBP: 0000000000000000 R08: 000000000000007e R09: 00007ffe002f5230 R10: 0000000000000002 R11: 0000000000000246 R12: 00000000000f4240 R13: 00007ffe002f54b8 R14: 00007ffe002f521c R15: 00007ffe002f5220 ---[ end trace ]---