[v6.1] general protection fault in su3000_i2c_transfer
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syzbot
Aug 25, 2025, 9:58:36 PM8/25/25
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 0bc96de781b4 Linux 6.1.148
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=17377862580000
kernel config: https://syzkaller.appspot.com/x/.config?x=5c8a5866886424a8
dashboard link: https://syzkaller.appspot.com/bug?extid=6be073f9a568377421f2
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/04c58ffc4a8a/disk-0bc96de7.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/01cad248945e/vmlinux-0bc96de7.xz
kernel image: https://storage.googleapis.com/syzbot-assets/fc5395191c77/bzImage-0bc96de7.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+6be073...@syzkaller.appspotmail.com
general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 0 PID: 6764 Comm: syz.2.751 Not tainted 6.1.148-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:su3000_i2c_transfer+0x1a9/0x1020 drivers/media/usb/dvb-usb/dw2102.c:737
Code: 4c 89 f8 48 c1 e8 03 49 bc 00 00 00 00 00 fc ff df 42 80 3c 20 00 74 08 4c 89 ff e8 a1 08 09 fb 49 8b 1f 48 89 d8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 50 09 00 00 0f b6 1b 48 8b 44 24 38 42
RSP: 0018:ffffc9000383fac8 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 0000000000000010 RCX: 0000000000000003
RDX: ffffffff86c7d221 RSI: ffffffff8d952e30 RDI: 0000000000001900
RBP: 0000000000000000 R08: ffff88807be29dc0 R09: 0000000000000002
R10: 0000000000001a00 R11: 0000000000000002 R12: dffffc0000000000
R13: 1ffff110047ad714 R14: 0000000000000001 R15: ffff888023d6b8a8
FS: 00007f4f0f3216c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4eff6e56c0 CR3: 00000000412af000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
__i2c_transfer+0x864/0x2260 drivers/i2c/i2c-core-base.c:-1
i2c_transfer+0x24c/0x390 drivers/i2c/i2c-core-base.c:2333
i2cdev_ioctl_rdwr+0x3da/0x6c0 drivers/i2c/i2c-dev.c:297
i2cdev_ioctl+0x5ba/0x750 drivers/i2c/i2c-dev.c:458
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0xfa/0x170 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f4f0e58ebe9
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:00007f4f0f321038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f4f0e7b5fa0 RCX: 00007f4f0e58ebe9
RDX: 0000200000000a40 RSI: 0000000000000707 RDI: 0000000000000004
RBP: 00007f4f0e611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4f0e7b6038 R14: 00007f4f0e7b5fa0 R15: 00007ffda5ebf718
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:su3000_i2c_transfer+0x1a9/0x1020 drivers/media/usb/dvb-usb/dw2102.c:737
Code: 4c 89 f8 48 c1 e8 03 49 bc 00 00 00 00 00 fc ff df 42 80 3c 20 00 74 08 4c 89 ff e8 a1 08 09 fb 49 8b 1f 48 89 d8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 50 09 00 00 0f b6 1b 48 8b 44 24 38 42
RSP: 0018:ffffc9000383fac8 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 0000000000000010 RCX: 0000000000000003
RDX: ffffffff86c7d221 RSI: ffffffff8d952e30 RDI: 0000000000001900
RBP: 0000000000000000 R08: ffff88807be29dc0 R09: 0000000000000002
R10: 0000000000001a00 R11: 0000000000000002 R12: dffffc0000000000
R13: 1ffff110047ad714 R14: 0000000000000001 R15: ffff888023d6b8a8
FS: 00007f4f0f3216c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4efeb84198 CR3: 00000000412af000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 4c 89 f8 mov %r15,%rax
3: 48 c1 e8 03 shr $0x3,%rax
7: 49 bc 00 00 00 00 00 movabs $0xdffffc0000000000,%r12
e: fc ff df
11: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1)
16: 74 08 je 0x20
18: 4c 89 ff mov %r15,%rdi
1b: e8 a1 08 09 fb call 0xfb0908c1
20: 49 8b 1f mov (%r15),%rbx
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 0f 85 50 09 00 00 jne 0x987
37: 0f b6 1b movzbl (%rbx),%ebx
3a: 48 8b 44 24 38 mov 0x38(%rsp),%rax
3f: 42 rex.X
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
syzbot found the following issue on:
HEAD commit: 0bc96de781b4 Linux 6.1.148
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=17377862580000
kernel config: https://syzkaller.appspot.com/x/.config?x=5c8a5866886424a8
dashboard link: https://syzkaller.appspot.com/bug?extid=6be073f9a568377421f2
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/04c58ffc4a8a/disk-0bc96de7.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/01cad248945e/vmlinux-0bc96de7.xz
kernel image: https://storage.googleapis.com/syzbot-assets/fc5395191c77/bzImage-0bc96de7.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+6be073...@syzkaller.appspotmail.com
general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 0 PID: 6764 Comm: syz.2.751 Not tainted 6.1.148-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:su3000_i2c_transfer+0x1a9/0x1020 drivers/media/usb/dvb-usb/dw2102.c:737
Code: 4c 89 f8 48 c1 e8 03 49 bc 00 00 00 00 00 fc ff df 42 80 3c 20 00 74 08 4c 89 ff e8 a1 08 09 fb 49 8b 1f 48 89 d8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 50 09 00 00 0f b6 1b 48 8b 44 24 38 42
RSP: 0018:ffffc9000383fac8 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 0000000000000010 RCX: 0000000000000003
RDX: ffffffff86c7d221 RSI: ffffffff8d952e30 RDI: 0000000000001900
RBP: 0000000000000000 R08: ffff88807be29dc0 R09: 0000000000000002
R10: 0000000000001a00 R11: 0000000000000002 R12: dffffc0000000000
R13: 1ffff110047ad714 R14: 0000000000000001 R15: ffff888023d6b8a8
FS: 00007f4f0f3216c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4eff6e56c0 CR3: 00000000412af000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
__i2c_transfer+0x864/0x2260 drivers/i2c/i2c-core-base.c:-1
i2c_transfer+0x24c/0x390 drivers/i2c/i2c-core-base.c:2333
i2cdev_ioctl_rdwr+0x3da/0x6c0 drivers/i2c/i2c-dev.c:297
i2cdev_ioctl+0x5ba/0x750 drivers/i2c/i2c-dev.c:458
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0xfa/0x170 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f4f0e58ebe9
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:00007f4f0f321038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f4f0e7b5fa0 RCX: 00007f4f0e58ebe9
RDX: 0000200000000a40 RSI: 0000000000000707 RDI: 0000000000000004
RBP: 00007f4f0e611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4f0e7b6038 R14: 00007f4f0e7b5fa0 R15: 00007ffda5ebf718
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:su3000_i2c_transfer+0x1a9/0x1020 drivers/media/usb/dvb-usb/dw2102.c:737
Code: 4c 89 f8 48 c1 e8 03 49 bc 00 00 00 00 00 fc ff df 42 80 3c 20 00 74 08 4c 89 ff e8 a1 08 09 fb 49 8b 1f 48 89 d8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 50 09 00 00 0f b6 1b 48 8b 44 24 38 42
RSP: 0018:ffffc9000383fac8 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 0000000000000010 RCX: 0000000000000003
RDX: ffffffff86c7d221 RSI: ffffffff8d952e30 RDI: 0000000000001900
RBP: 0000000000000000 R08: ffff88807be29dc0 R09: 0000000000000002
R10: 0000000000001a00 R11: 0000000000000002 R12: dffffc0000000000
R13: 1ffff110047ad714 R14: 0000000000000001 R15: ffff888023d6b8a8
FS: 00007f4f0f3216c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4efeb84198 CR3: 00000000412af000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 4c 89 f8 mov %r15,%rax
3: 48 c1 e8 03 shr $0x3,%rax
7: 49 bc 00 00 00 00 00 movabs $0xdffffc0000000000,%r12
e: fc ff df
11: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1)
16: 74 08 je 0x20
18: 4c 89 ff mov %r15,%rdi
1b: e8 a1 08 09 fb call 0xfb0908c1
20: 49 8b 1f mov (%r15),%rbx
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 0f 85 50 09 00 00 jne 0x987
37: 0f b6 1b movzbl (%rbx),%ebx
3a: 48 8b 44 24 38 mov 0x38(%rsp),%rax
3f: 42 rex.X
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
syzbot
Aug 25, 2025, 10:36:31 PM8/25/25
to syzkaller...@googlegroups.com
syzbot has found a reproducer for the following issue on:
HEAD commit: 0bc96de781b4 Linux 6.1.148
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=13189c42580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1064eef0580000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/04c58ffc4a8a/disk-0bc96de7.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/01cad248945e/vmlinux-0bc96de7.xz
kernel image: https://storage.googleapis.com/syzbot-assets/fc5395191c77/bzImage-0bc96de7.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+6be073...@syzkaller.appspotmail.com
general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 0 PID: 4433 Comm: syz.0.17 Not tainted 6.1.148-syzkaller #0
R10: 0000000000001a00 R11: 0000000000000000 R12: dffffc0000000000
R13: 1ffff1100f2c5ab0 R14: 0000000000000001 R15: ffff88807962d588
FS: 0000555559ab9500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
RAX: ffffffffffffffda RBX: 00007f0575db5fa0 RCX: 00007f0575b8ebe9
R10: 0000000000001a00 R11: 0000000000000000 R12: dffffc0000000000
R13: 1ffff1100f2c5ab0 R14: 0000000000000001 R15: ffff88807962d588
FS: 0000555559ab9500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.
HEAD commit: 0bc96de781b4 Linux 6.1.148
git tree: linux-6.1.y
kernel config: https://syzkaller.appspot.com/x/.config?x=5c8a5866886424a8
dashboard link: https://syzkaller.appspot.com/bug?extid=6be073f9a568377421f2
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17189c42580000
dashboard link: https://syzkaller.appspot.com/bug?extid=6be073f9a568377421f2
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1064eef0580000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/04c58ffc4a8a/disk-0bc96de7.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/01cad248945e/vmlinux-0bc96de7.xz
kernel image: https://storage.googleapis.com/syzbot-assets/fc5395191c77/bzImage-0bc96de7.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+6be073...@syzkaller.appspotmail.com
general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:su3000_i2c_transfer+0x1a9/0x1020 drivers/media/usb/dvb-usb/dw2102.c:737
Code: 4c 89 f8 48 c1 e8 03 49 bc 00 00 00 00 00 fc ff df 42 80 3c 20 00 74 08 4c 89 ff e8 a1 08 09 fb 49 8b 1f 48 89 d8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 50 09 00 00 0f b6 1b 48 8b 44 24 38 42
RSP: 0018:ffffc900034a7ac8 EFLAGS: 00010202
RIP: 0010:su3000_i2c_transfer+0x1a9/0x1020 drivers/media/usb/dvb-usb/dw2102.c:737
Code: 4c 89 f8 48 c1 e8 03 49 bc 00 00 00 00 00 fc ff df 42 80 3c 20 00 74 08 4c 89 ff e8 a1 08 09 fb 49 8b 1f 48 89 d8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 50 09 00 00 0f b6 1b 48 8b 44 24 38 42
RAX: 0000000000000002 RBX: 0000000000000010 RCX: 0000000000000003
RDX: ffffffff86c7d221 RSI: ffffffff8d952e30 RDI: 0000000000001900
RBP: 0000000000000000 R08: ffff88807a209dc0 R09: 0000000000000002
RDX: ffffffff86c7d221 RSI: ffffffff8d952e30 RDI: 0000000000001900
R10: 0000000000001a00 R11: 0000000000000000 R12: dffffc0000000000
R13: 1ffff1100f2c5ab0 R14: 0000000000000001 R15: ffff88807962d588
FS: 0000555559ab9500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2db63fff CR3: 0000000077673000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
__i2c_transfer+0x864/0x2260 drivers/i2c/i2c-core-base.c:-1
i2c_transfer+0x24c/0x390 drivers/i2c/i2c-core-base.c:2333
i2cdev_ioctl_rdwr+0x3da/0x6c0 drivers/i2c/i2c-dev.c:297
i2cdev_ioctl+0x5ba/0x750 drivers/i2c/i2c-dev.c:458
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0xfa/0x170 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f0575b8ebe9
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
__i2c_transfer+0x864/0x2260 drivers/i2c/i2c-core-base.c:-1
i2c_transfer+0x24c/0x390 drivers/i2c/i2c-core-base.c:2333
i2cdev_ioctl_rdwr+0x3da/0x6c0 drivers/i2c/i2c-dev.c:297
i2cdev_ioctl+0x5ba/0x750 drivers/i2c/i2c-dev.c:458
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0xfa/0x170 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
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:00007fffce604358 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f0575db5fa0 RCX: 00007f0575b8ebe9
RDX: 0000200000000a40 RSI: 0000000000000707 RDI: 0000000000000004
RBP: 00007f0575c11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0575db5fa0 R14: 00007f0575db5fa0 R15: 0000000000000003
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:su3000_i2c_transfer+0x1a9/0x1020 drivers/media/usb/dvb-usb/dw2102.c:737
Code: 4c 89 f8 48 c1 e8 03 49 bc 00 00 00 00 00 fc ff df 42 80 3c 20 00 74 08 4c 89 ff e8 a1 08 09 fb 49 8b 1f 48 89 d8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 50 09 00 00 0f b6 1b 48 8b 44 24 38 42
RSP: 0018:ffffc900034a7ac8 EFLAGS: 00010202
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:su3000_i2c_transfer+0x1a9/0x1020 drivers/media/usb/dvb-usb/dw2102.c:737
Code: 4c 89 f8 48 c1 e8 03 49 bc 00 00 00 00 00 fc ff df 42 80 3c 20 00 74 08 4c 89 ff e8 a1 08 09 fb 49 8b 1f 48 89 d8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 50 09 00 00 0f b6 1b 48 8b 44 24 38 42
RAX: 0000000000000002 RBX: 0000000000000010 RCX: 0000000000000003
RDX: ffffffff86c7d221 RSI: ffffffff8d952e30 RDI: 0000000000001900
RBP: 0000000000000000 R08: ffff88807a209dc0 R09: 0000000000000002
RDX: ffffffff86c7d221 RSI: ffffffff8d952e30 RDI: 0000000000001900
R10: 0000000000001a00 R11: 0000000000000000 R12: dffffc0000000000
R13: 1ffff1100f2c5ab0 R14: 0000000000000001 R15: ffff88807962d588
FS: 0000555559ab9500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f363623ee9c CR3: 0000000077673000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 4c 89 f8 mov %r15,%rax
3: 48 c1 e8 03 shr $0x3,%rax
7: 49 bc 00 00 00 00 00 movabs $0xdffffc0000000000,%r12
e: fc ff df
11: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1)
16: 74 08 je 0x20
18: 4c 89 ff mov %r15,%rdi
1b: e8 a1 08 09 fb call 0xfb0908c1
20: 49 8b 1f mov (%r15),%rbx
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 0f 85 50 09 00 00 jne 0x987
37: 0f b6 1b movzbl (%rbx),%ebx
3a: 48 8b 44 24 38 mov 0x38(%rsp),%rax
3f: 42 rex.X
---
If you want syzbot to run the reproducer, reply with:
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 4c 89 f8 mov %r15,%rax
3: 48 c1 e8 03 shr $0x3,%rax
7: 49 bc 00 00 00 00 00 movabs $0xdffffc0000000000,%r12
e: fc ff df
11: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1)
16: 74 08 je 0x20
18: 4c 89 ff mov %r15,%rdi
1b: e8 a1 08 09 fb call 0xfb0908c1
20: 49 8b 1f mov (%r15),%rbx
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 0f 85 50 09 00 00 jne 0x987
37: 0f b6 1b movzbl (%rbx),%ebx
3a: 48 8b 44 24 38 mov 0x38(%rsp),%rax
3f: 42 rex.X
---
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.
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