Oops: general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] CPU: 0 UID: 0 PID: 2395 Comm: syz.9.5057 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:su3000_i2c_transfer+0x610/0xf30 drivers/media/usb/dvb-usb/dw2102.c:740 Code: e4 bf f9 48 8d 7b 08 48 89 f8 48 c1 e8 03 42 80 3c 38 00 0f 85 1a 08 00 00 48 8b 5b 08 48 89 d8 48 89 da 48 c1 e8 03 83 e2 07 <42> 0f b6 04 38 38 d0 7f 08 84 c0 0f 85 eb 07 00 00 48 8b 44 24 10 RSP: 0018:ffffc9000398fc40 EFLAGS: 00010246 RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffffc90020bc4000 RDX: 0000000000000000 RSI: ffffffff87fba7d9 RDI: ffff888144717908 RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000001a00 R10: 0000000000001900 R11: 0000000000000000 R12: ffff88806959c200 R13: 0000000000001900 R14: 0000000000000001 R15: dffffc0000000000 FS: 00007f634522f6c0(0000) GS:ffff8881246b9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c2b3b91 CR3: 000000002f6b5000 CR4: 00000000003526f0 Call Trace: __i2c_transfer+0x6b6/0x2190 drivers/i2c/i2c-core-base.c:2264 i2c_transfer drivers/i2c/i2c-core-base.c:2320 [inline] i2c_transfer+0x1da/0x380 drivers/i2c/i2c-core-base.c:2296 i2cdev_ioctl_rdwr+0x373/0x710 drivers/i2c/i2c-dev.c:306 i2cdev_ioctl+0x5ff/0x820 drivers/i2c/i2c-dev.c:467 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:598 [inline] __se_sys_ioctl fs/ioctl.c:584 [inline] __x64_sys_ioctl+0x18b/0x210 fs/ioctl.c:584 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f634438ebe9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f634522f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f63445b5fa0 RCX: 00007f634438ebe9 RDX: 0000200000000a40 RSI: 0000000000000707 RDI: 0000000000000004 RBP: 00007f6344411e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f63445b6038 R14: 00007f63445b5fa0 R15: 00007fffd793fd68 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:su3000_i2c_transfer+0x610/0xf30 drivers/media/usb/dvb-usb/dw2102.c:740 Code: e4 bf f9 48 8d 7b 08 48 89 f8 48 c1 e8 03 42 80 3c 38 00 0f 85 1a 08 00 00 48 8b 5b 08 48 89 d8 48 89 da 48 c1 e8 03 83 e2 07 <42> 0f b6 04 38 38 d0 7f 08 84 c0 0f 85 eb 07 00 00 48 8b 44 24 10 RSP: 0018:ffffc9000398fc40 EFLAGS: 00010246 RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffffc90020bc4000 RDX: 0000000000000000 RSI: ffffffff87fba7d9 RDI: ffff888144717908 RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000001a00 R10: 0000000000001900 R11: 0000000000000000 R12: ffff88806959c200 R13: 0000000000001900 R14: 0000000000000001 R15: dffffc0000000000 FS: 00007f634522f6c0(0000) GS:ffff8881247b9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1883bedf98 CR3: 000000002f6b5000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: e4 bf in $0xbf,%al 2: f9 stc 3: 48 8d 7b 08 lea 0x8(%rbx),%rdi 7: 48 89 f8 mov %rdi,%rax a: 48 c1 e8 03 shr $0x3,%rax e: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) 13: 0f 85 1a 08 00 00 jne 0x833 19: 48 8b 5b 08 mov 0x8(%rbx),%rbx 1d: 48 89 d8 mov %rbx,%rax 20: 48 89 da mov %rbx,%rdx 23: 48 c1 e8 03 shr $0x3,%rax 27: 83 e2 07 and $0x7,%edx * 2a: 42 0f b6 04 38 movzbl (%rax,%r15,1),%eax <-- trapping instruction 2f: 38 d0 cmp %dl,%al 31: 7f 08 jg 0x3b 33: 84 c0 test %al,%al 35: 0f 85 eb 07 00 00 jne 0x826 3b: 48 8b 44 24 10 mov 0x10(%rsp),%rax