[v5.15] general protection fault in vsscanf
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syzbot
Aug 18, 2026, 6:35:35 PM (21 hours ago) Aug 18
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: aabd761612db Linux 5.15.215
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=131a8e79580000
kernel config: https://syzkaller.appspot.com/x/.config?x=f161cbc9aef65db0
dashboard link: https://syzkaller.appspot.com/bug?extid=b68e1136e003bd0a4101
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/f636f56d3662/disk-aabd7616.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/f1a46620f40c/vmlinux-aabd7616.xz
kernel image: https://storage.googleapis.com/syzbot-assets/9b78bb48b022/bzImage-aabd7616.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+b68e11...@syzkaller.appspotmail.com
general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 PID: 4698 Comm: syz.3.103 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:vsscanf+0x196/0x24b0 lib/vsprintf.c:3450
Code: 48 c7 c6 e0 fb 94 8c e8 c8 ff 6c fd 41 83 fe 25 74 4d 45 85 f6 0f 84 b6 21 00 00 48 ff c3 48 89 5c 24 78 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 4f 1b 00 00 41 0f b6 1f 45 0f b6 f6 44
RSP: 0018:ffffc90002c9f600 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffffff8a35bae1 RCX: 0000000000000001
RDX: ffffffff840c0148 RSI: ffffffff8c94fbe0 RDI: 0000000000000030
RBP: ffffc90002c9f730 R08: ffff888027810000 R09: 0000000000000002
R10: 0000000000000025 R11: 0000000000000002 R12: ffffffff8a35bae0
R13: dffffc0000000000 R14: 0000000000000030 R15: 0000000000000000
FS: 00007f29911046c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2faa33 CR3: 000000005e9b3000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
sscanf+0xdf/0x130 lib/vsprintf.c:3708
split_huge_pages_write+0x30d/0x1750 mm/huge_memory.c:3112
full_proxy_write+0x109/0x1c0 fs/debugfs/file.c:244
vfs_write+0x304/0xd70 fs/read_write.c:592
ksys_write+0x153/0x260 fs/read_write.c:647
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f2992eac0d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2991104028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f2993133fa0 RCX: 00007f2992eac0d9
RDX: 0000000000000005 RSI: 0000200000000600 RDI: 0000000000000003
RBP: 00007f2992f43024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2993134038 R14: 00007f2993133fa0 R15: 00007ffd1d369c08
</TASK>
Modules linked in:
---[ end trace 23c976a403634653 ]---
RIP: 0010:vsscanf+0x196/0x24b0 lib/vsprintf.c:3450
Code: 48 c7 c6 e0 fb 94 8c e8 c8 ff 6c fd 41 83 fe 25 74 4d 45 85 f6 0f 84 b6 21 00 00 48 ff c3 48 89 5c 24 78 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 4f 1b 00 00 41 0f b6 1f 45 0f b6 f6 44
RSP: 0018:ffffc90002c9f600 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffffff8a35bae1 RCX: 0000000000000001
RDX: ffffffff840c0148 RSI: ffffffff8c94fbe0 RDI: 0000000000000030
RBP: ffffc90002c9f730 R08: ffff888027810000 R09: 0000000000000002
R10: 0000000000000025 R11: 0000000000000002 R12: ffffffff8a35bae0
R13: dffffc0000000000 R14: 0000000000000030 R15: 0000000000000000
FS: 00007f29911046c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c327cd6 CR3: 000000005e9b3000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 48 c7 c6 e0 fb 94 8c mov $0xffffffff8c94fbe0,%rsi
7: e8 c8 ff 6c fd call 0xfd6cffd4
c: 41 83 fe 25 cmp $0x25,%r14d
10: 74 4d je 0x5f
12: 45 85 f6 test %r14d,%r14d
15: 0f 84 b6 21 00 00 je 0x21d1
1b: 48 ff c3 inc %rbx
1e: 48 89 5c 24 78 mov %rbx,0x78(%rsp)
23: 4c 89 f8 mov %r15,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 0f 85 4f 1b 00 00 jne 0x1b86
37: 41 0f b6 1f movzbl (%r15),%ebx
3b: 45 0f b6 f6 movzbl %r14b,%r14d
3f: 44 rex.R
---
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: aabd761612db Linux 5.15.215
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=131a8e79580000
kernel config: https://syzkaller.appspot.com/x/.config?x=f161cbc9aef65db0
dashboard link: https://syzkaller.appspot.com/bug?extid=b68e1136e003bd0a4101
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/f636f56d3662/disk-aabd7616.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/f1a46620f40c/vmlinux-aabd7616.xz
kernel image: https://storage.googleapis.com/syzbot-assets/9b78bb48b022/bzImage-aabd7616.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+b68e11...@syzkaller.appspotmail.com
general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 PID: 4698 Comm: syz.3.103 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:vsscanf+0x196/0x24b0 lib/vsprintf.c:3450
Code: 48 c7 c6 e0 fb 94 8c e8 c8 ff 6c fd 41 83 fe 25 74 4d 45 85 f6 0f 84 b6 21 00 00 48 ff c3 48 89 5c 24 78 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 4f 1b 00 00 41 0f b6 1f 45 0f b6 f6 44
RSP: 0018:ffffc90002c9f600 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffffff8a35bae1 RCX: 0000000000000001
RDX: ffffffff840c0148 RSI: ffffffff8c94fbe0 RDI: 0000000000000030
RBP: ffffc90002c9f730 R08: ffff888027810000 R09: 0000000000000002
R10: 0000000000000025 R11: 0000000000000002 R12: ffffffff8a35bae0
R13: dffffc0000000000 R14: 0000000000000030 R15: 0000000000000000
FS: 00007f29911046c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2faa33 CR3: 000000005e9b3000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
sscanf+0xdf/0x130 lib/vsprintf.c:3708
split_huge_pages_write+0x30d/0x1750 mm/huge_memory.c:3112
full_proxy_write+0x109/0x1c0 fs/debugfs/file.c:244
vfs_write+0x304/0xd70 fs/read_write.c:592
ksys_write+0x153/0x260 fs/read_write.c:647
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f2992eac0d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2991104028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f2993133fa0 RCX: 00007f2992eac0d9
RDX: 0000000000000005 RSI: 0000200000000600 RDI: 0000000000000003
RBP: 00007f2992f43024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2993134038 R14: 00007f2993133fa0 R15: 00007ffd1d369c08
</TASK>
Modules linked in:
---[ end trace 23c976a403634653 ]---
RIP: 0010:vsscanf+0x196/0x24b0 lib/vsprintf.c:3450
Code: 48 c7 c6 e0 fb 94 8c e8 c8 ff 6c fd 41 83 fe 25 74 4d 45 85 f6 0f 84 b6 21 00 00 48 ff c3 48 89 5c 24 78 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 4f 1b 00 00 41 0f b6 1f 45 0f b6 f6 44
RSP: 0018:ffffc90002c9f600 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffffff8a35bae1 RCX: 0000000000000001
RDX: ffffffff840c0148 RSI: ffffffff8c94fbe0 RDI: 0000000000000030
RBP: ffffc90002c9f730 R08: ffff888027810000 R09: 0000000000000002
R10: 0000000000000025 R11: 0000000000000002 R12: ffffffff8a35bae0
R13: dffffc0000000000 R14: 0000000000000030 R15: 0000000000000000
FS: 00007f29911046c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c327cd6 CR3: 000000005e9b3000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 48 c7 c6 e0 fb 94 8c mov $0xffffffff8c94fbe0,%rsi
7: e8 c8 ff 6c fd call 0xfd6cffd4
c: 41 83 fe 25 cmp $0x25,%r14d
10: 74 4d je 0x5f
12: 45 85 f6 test %r14d,%r14d
15: 0f 84 b6 21 00 00 je 0x21d1
1b: 48 ff c3 inc %rbx
1e: 48 89 5c 24 78 mov %rbx,0x78(%rsp)
23: 4c 89 f8 mov %r15,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 0f 85 4f 1b 00 00 jne 0x1b86
37: 41 0f b6 1f movzbl (%r15),%ebx
3b: 45 0f b6 f6 movzbl %r14b,%r14d
3f: 44 rex.R
---
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 18, 2026, 7:04:42 PM (20 hours ago) Aug 18
to syzkaller...@googlegroups.com
syzbot has found a reproducer for the following issue on:
HEAD commit: aabd761612db Linux 5.15.215
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=13389679580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10068e79580000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/f636f56d3662/disk-aabd7616.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/f1a46620f40c/vmlinux-aabd7616.xz
kernel image: https://storage.googleapis.com/syzbot-assets/9b78bb48b022/bzImage-aabd7616.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+b68e11...@syzkaller.appspotmail.com
general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 PID: 4496 Comm: syz.0.17 Not tainted syzkaller #0
R10: 0000000000000025 R11: 0000000000000000 R12: ffffffff8a35bae0
RAX: ffffffffffffffda RBX: 00007f4270514fa0 RCX: 00007f427028d0d9
</TASK>
Modules linked in:
---[ end trace fce4f2999afa0b80 ]---
R10: 0000000000000025 R11: 0000000000000000 R12: ffffffff8a35bae0
#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: aabd761612db Linux 5.15.215
git tree: linux-5.15.y
kernel config: https://syzkaller.appspot.com/x/.config?x=f161cbc9aef65db0
dashboard link: https://syzkaller.appspot.com/bug?extid=b68e1136e003bd0a4101
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=144bb679580000
dashboard link: https://syzkaller.appspot.com/bug?extid=b68e1136e003bd0a4101
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10068e79580000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/f636f56d3662/disk-aabd7616.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/f1a46620f40c/vmlinux-aabd7616.xz
kernel image: https://storage.googleapis.com/syzbot-assets/9b78bb48b022/bzImage-aabd7616.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+b68e11...@syzkaller.appspotmail.com
general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:vsscanf+0x196/0x24b0 lib/vsprintf.c:3450
Code: 48 c7 c6 e0 fb 94 8c e8 c8 ff 6c fd 41 83 fe 25 74 4d 45 85 f6 0f 84 b6 21 00 00 48 ff c3 48 89 5c 24 78 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 4f 1b 00 00 41 0f b6 1f 45 0f b6 f6 44
RSP: 0018:ffffc90002fef600 EFLAGS: 00010246
RIP: 0010:vsscanf+0x196/0x24b0 lib/vsprintf.c:3450
Code: 48 c7 c6 e0 fb 94 8c e8 c8 ff 6c fd 41 83 fe 25 74 4d 45 85 f6 0f 84 b6 21 00 00 48 ff c3 48 89 5c 24 78 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 4f 1b 00 00 41 0f b6 1f 45 0f b6 f6 44
RAX: 0000000000000000 RBX: ffffffff8a35bae1 RCX: 0000000000000001
RDX: ffffffff840c0148 RSI: ffffffff8c94fbe0 RDI: 0000000000000030
RBP: ffffc90002fef730 R08: ffff8880239e3b80 R09: 0000000000000002
RDX: ffffffff840c0148 RSI: ffffffff8c94fbe0 RDI: 0000000000000030
R10: 0000000000000025 R11: 0000000000000000 R12: ffffffff8a35bae0
R13: dffffc0000000000 R14: 0000000000000030 R15: 0000000000000000
FS: 0000555587d3b500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e863fff CR3: 0000000026abc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
sscanf+0xdf/0x130 lib/vsprintf.c:3708
split_huge_pages_write+0x30d/0x1750 mm/huge_memory.c:3112
full_proxy_write+0x109/0x1c0 fs/debugfs/file.c:244
vfs_write+0x304/0xd70 fs/read_write.c:592
ksys_write+0x153/0x260 fs/read_write.c:647
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f427028d0d9
<TASK>
sscanf+0xdf/0x130 lib/vsprintf.c:3708
split_huge_pages_write+0x30d/0x1750 mm/huge_memory.c:3112
full_proxy_write+0x109/0x1c0 fs/debugfs/file.c:244
vfs_write+0x304/0xd70 fs/read_write.c:592
ksys_write+0x153/0x260 fs/read_write.c:647
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe66ce17b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f4270514fa0 RCX: 00007f427028d0d9
RDX: 0000000000000005 RSI: 0000200000000600 RDI: 0000000000000003
RBP: 00007f4270324024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4270514fac R14: 00007f4270514fa0 R15: 00007f4270514fa0
</TASK>
Modules linked in:
---[ end trace fce4f2999afa0b80 ]---
RIP: 0010:vsscanf+0x196/0x24b0 lib/vsprintf.c:3450
Code: 48 c7 c6 e0 fb 94 8c e8 c8 ff 6c fd 41 83 fe 25 74 4d 45 85 f6 0f 84 b6 21 00 00 48 ff c3 48 89 5c 24 78 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 4f 1b 00 00 41 0f b6 1f 45 0f b6 f6 44
RSP: 0018:ffffc90002fef600 EFLAGS: 00010246
Code: 48 c7 c6 e0 fb 94 8c e8 c8 ff 6c fd 41 83 fe 25 74 4d 45 85 f6 0f 84 b6 21 00 00 48 ff c3 48 89 5c 24 78 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 4f 1b 00 00 41 0f b6 1f 45 0f b6 f6 44
RAX: 0000000000000000 RBX: ffffffff8a35bae1 RCX: 0000000000000001
RDX: ffffffff840c0148 RSI: ffffffff8c94fbe0 RDI: 0000000000000030
RBP: ffffc90002fef730 R08: ffff8880239e3b80 R09: 0000000000000002
RDX: ffffffff840c0148 RSI: ffffffff8c94fbe0 RDI: 0000000000000030
R10: 0000000000000025 R11: 0000000000000000 R12: ffffffff8a35bae0
R13: dffffc0000000000 R14: 0000000000000030 R15: 0000000000000000
FS: 0000555587d3b500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000556a8c034950 CR3: 0000000026abc000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 48 c7 c6 e0 fb 94 8c mov $0xffffffff8c94fbe0,%rsi
7: e8 c8 ff 6c fd call 0xfd6cffd4
c: 41 83 fe 25 cmp $0x25,%r14d
10: 74 4d je 0x5f
12: 45 85 f6 test %r14d,%r14d
15: 0f 84 b6 21 00 00 je 0x21d1
1b: 48 ff c3 inc %rbx
1e: 48 89 5c 24 78 mov %rbx,0x78(%rsp)
23: 4c 89 f8 mov %r15,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 0f 85 4f 1b 00 00 jne 0x1b86
37: 41 0f b6 1f movzbl (%r15),%ebx
3b: 45 0f b6 f6 movzbl %r14b,%r14d
3f: 44 rex.R
---
If you want syzbot to run the reproducer, reply with:
Code disassembly (best guess):
0: 48 c7 c6 e0 fb 94 8c mov $0xffffffff8c94fbe0,%rsi
7: e8 c8 ff 6c fd call 0xfd6cffd4
c: 41 83 fe 25 cmp $0x25,%r14d
10: 74 4d je 0x5f
12: 45 85 f6 test %r14d,%r14d
15: 0f 84 b6 21 00 00 je 0x21d1
1b: 48 ff c3 inc %rbx
1e: 48 89 5c 24 78 mov %rbx,0x78(%rsp)
23: 4c 89 f8 mov %r15,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 0f 85 4f 1b 00 00 jne 0x1b86
37: 41 0f b6 1f movzbl (%r15),%ebx
3b: 45 0f b6 f6 movzbl %r14b,%r14d
3f: 44 rex.R
---
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.
syzbot
4:56 AM (10 hours ago) 4:56 AM
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: d27334b2888c Linux 6.6.151
git tree: linux-6.6.y
console output: https://syzkaller.appspot.com/x/log.txt?x=14f39679580000
kernel config: https://syzkaller.appspot.com/x/.config?x=f0bc3d90c30838b5
dashboard link: https://syzkaller.appspot.com/bug?extid=76a2c4fd2ef62437fd6f
disk image: https://storage.googleapis.com/syzbot-assets/695139abd971/disk-d27334b2.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/b11fc121442a/vmlinux-d27334b2.xz
kernel image: https://storage.googleapis.com/syzbot-assets/e226f54f9286/bzImage-d27334b2.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+76a2c4...@syzkaller.appspotmail.com
general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 PID: 29032 Comm: syz.9.4841 Not tainted syzkaller #0
Code: 48 c7 c6 d0 6d 74 8e e8 64 72 07 f7 41 83 fe 25 74 4d 45 85 f6 0f 84 1e 22 00 00 48 ff c3 48 89 5c 24 78 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 bd 1b 00 00 41 0f b6 1f 45 0f b6 f6 44
RSP: 0018:ffffc9000b35f640 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffffff8ad68661 RCX: 0000000000000001
RDX: ffffffff8a80047c RSI: ffffffff8e746dd0 RDI: 0000000000000030
RBP: ffffc9000b35f770 R08: ffff888027dabc00 R09: 0000000000000002
R10: 0000000000000025 R11: 0000000000000002 R12: ffffffff8ad68660
Call Trace:
<TASK>
sscanf+0xe3/0x140 lib/vsprintf.c:3722
split_huge_pages_write+0x391/0x1b60 mm/huge_memory.c:3179
full_proxy_write+0x110/0x1c0 fs/debugfs/file.c:244
vfs_write+0x299/0x9a0 fs/read_write.c:582
ksys_write+0x151/0x260 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7ff77ad9e0d9
RAX: ffffffffffffffda RBX: 00007ff77b025fa0 RCX: 00007ff77ad9e0d9
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:vsscanf+0x19a/0x2520 lib/vsprintf.c:3464
Code: 48 c7 c6 d0 6d 74 8e e8 64 72 07 f7 41 83 fe 25 74 4d 45 85 f6 0f 84 1e 22 00 00 48 ff c3 48 89 5c 24 78 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 bd 1b 00 00 41 0f b6 1f 45 0f b6 f6 44
RSP: 0018:ffffc9000b35f640 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffffff8ad68661 RCX: 0000000000000001
RDX: ffffffff8a80047c RSI: ffffffff8e746dd0 RDI: 0000000000000030
RBP: ffffc9000b35f770 R08: ffff888027dabc00 R09: 0000000000000002
R10: 0000000000000025 R11: 0000000000000002 R12: ffffffff8ad68660
7: e8 64 72 07 f7 call 0xf7077270
syzbot found the following issue on:
HEAD commit: d27334b2888c Linux 6.6.151
git tree: linux-6.6.y
console output: https://syzkaller.appspot.com/x/log.txt?x=14f39679580000
kernel config: https://syzkaller.appspot.com/x/.config?x=f0bc3d90c30838b5
dashboard link: https://syzkaller.appspot.com/bug?extid=76a2c4fd2ef62437fd6f
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/695139abd971/disk-d27334b2.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/b11fc121442a/vmlinux-d27334b2.xz
kernel image: https://storage.googleapis.com/syzbot-assets/e226f54f9286/bzImage-d27334b2.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:vsscanf+0x19a/0x2520 lib/vsprintf.c:3464
Code: 48 c7 c6 d0 6d 74 8e e8 64 72 07 f7 41 83 fe 25 74 4d 45 85 f6 0f 84 1e 22 00 00 48 ff c3 48 89 5c 24 78 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 bd 1b 00 00 41 0f b6 1f 45 0f b6 f6 44
RSP: 0018:ffffc9000b35f640 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffffff8ad68661 RCX: 0000000000000001
RDX: ffffffff8a80047c RSI: ffffffff8e746dd0 RDI: 0000000000000030
RBP: ffffc9000b35f770 R08: ffff888027dabc00 R09: 0000000000000002
R10: 0000000000000025 R11: 0000000000000002 R12: ffffffff8ad68660
R13: dffffc0000000000 R14: 0000000000000030 R15: 0000000000000000
FS: 00007ff778ff66c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3cce72 CR3: 000000005b921000 CR4: 00000000003506e0
Call Trace:
<TASK>
sscanf+0xe3/0x140 lib/vsprintf.c:3722
split_huge_pages_write+0x391/0x1b60 mm/huge_memory.c:3179
full_proxy_write+0x110/0x1c0 fs/debugfs/file.c:244
vfs_write+0x299/0x9a0 fs/read_write.c:582
ksys_write+0x151/0x260 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7ff77ad9e0d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff778ff6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ff77b025fa0 RCX: 00007ff77ad9e0d9
RDX: 0000000000000005 RSI: 0000200000000600 RDI: 0000000000000003
RBP: 00007ff77ae35024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff77b026038 R14: 00007ff77b025fa0 R15: 00007ffd21e67ca8
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:vsscanf+0x19a/0x2520 lib/vsprintf.c:3464
Code: 48 c7 c6 d0 6d 74 8e e8 64 72 07 f7 41 83 fe 25 74 4d 45 85 f6 0f 84 1e 22 00 00 48 ff c3 48 89 5c 24 78 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 bd 1b 00 00 41 0f b6 1f 45 0f b6 f6 44
RSP: 0018:ffffc9000b35f640 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffffff8ad68661 RCX: 0000000000000001
RDX: ffffffff8a80047c RSI: ffffffff8e746dd0 RDI: 0000000000000030
RBP: ffffc9000b35f770 R08: ffff888027dabc00 R09: 0000000000000002
R10: 0000000000000025 R11: 0000000000000002 R12: ffffffff8ad68660
R13: dffffc0000000000 R14: 0000000000000030 R15: 0000000000000000
FS: 00007ff778ff66c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e2eedfb660 CR3: 000000005b921000 CR4: 00000000003506f0
----------------
Code disassembly (best guess):
0: 48 c7 c6 d0 6d 74 8e mov $0xffffffff8e746dd0,%rsi
Code disassembly (best guess):
7: e8 64 72 07 f7 call 0xf7077270
c: 41 83 fe 25 cmp $0x25,%r14d
10: 74 4d je 0x5f
12: 45 85 f6 test %r14d,%r14d
15: 0f 84 1e 22 00 00 je 0x2239
10: 74 4d je 0x5f
12: 45 85 f6 test %r14d,%r14d
1b: 48 ff c3 inc %rbx
1e: 48 89 5c 24 78 mov %rbx,0x78(%rsp)
23: 4c 89 f8 mov %r15,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 0f 85 bd 1b 00 00 jne 0x1bf4
1e: 48 89 5c 24 78 mov %rbx,0x78(%rsp)
23: 4c 89 f8 mov %r15,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
37: 41 0f b6 1f movzbl (%r15),%ebx
3b: 45 0f b6 f6 movzbl %r14b,%r14d
3f: 44 rex.R
---
3b: 45 0f b6 f6 movzbl %r14b,%r14d
3f: 44 rex.R
---
syzbot
5:26 AM (10 hours ago) 5:26 AM
to syzkaller...@googlegroups.com
syzbot has found a reproducer for the following issue on:
HEAD commit: d27334b2888c Linux 6.6.151
git tree: linux-6.6.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1243da25580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17317679580000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/695139abd971/disk-d27334b2.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/b11fc121442a/vmlinux-d27334b2.xz
kernel image: https://storage.googleapis.com/syzbot-assets/e226f54f9286/bzImage-d27334b2.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+76a2c4...@syzkaller.appspotmail.com
general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 PID: 5931 Comm: syz.0.17 Not tainted syzkaller #0
R10: 0000000000000025 R11: 0000000000000000 R12: ffffffff8ad68660
RAX: ffffffffffffffda RBX: 00007f8cbb825fa0 RCX: 00007f8cbb59e0d9
R10: 0000000000000025 R11: 0000000000000000 R12: ffffffff8ad68660
HEAD commit: d27334b2888c Linux 6.6.151
git tree: linux-6.6.y
kernel config: https://syzkaller.appspot.com/x/.config?x=f0bc3d90c30838b5
dashboard link: https://syzkaller.appspot.com/bug?extid=76a2c4fd2ef62437fd6f
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=145b9679580000
dashboard link: https://syzkaller.appspot.com/bug?extid=76a2c4fd2ef62437fd6f
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17317679580000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/695139abd971/disk-d27334b2.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/b11fc121442a/vmlinux-d27334b2.xz
kernel image: https://storage.googleapis.com/syzbot-assets/e226f54f9286/bzImage-d27334b2.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+76a2c4...@syzkaller.appspotmail.com
general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:vsscanf+0x19a/0x2520 lib/vsprintf.c:3464
Code: 48 c7 c6 d0 6d 74 8e e8 64 72 07 f7 41 83 fe 25 74 4d 45 85 f6 0f 84 1e 22 00 00 48 ff c3 48 89 5c 24 78 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 bd 1b 00 00 41 0f b6 1f 45 0f b6 f6 44
RSP: 0018:ffffc900033b7640 EFLAGS: 00010246
RIP: 0010:vsscanf+0x19a/0x2520 lib/vsprintf.c:3464
Code: 48 c7 c6 d0 6d 74 8e e8 64 72 07 f7 41 83 fe 25 74 4d 45 85 f6 0f 84 1e 22 00 00 48 ff c3 48 89 5c 24 78 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 bd 1b 00 00 41 0f b6 1f 45 0f b6 f6 44
RAX: 0000000000000000 RBX: ffffffff8ad68661 RCX: 0000000000000001
RDX: ffffffff8a80047c RSI: ffffffff8e746dd0 RDI: 0000000000000030
RBP: ffffc900033b7770 R08: ffff88802a8b5a00 R09: 0000000000000002
RDX: ffffffff8a80047c RSI: ffffffff8e746dd0 RDI: 0000000000000030
R10: 0000000000000025 R11: 0000000000000000 R12: ffffffff8ad68660
R13: dffffc0000000000 R14: 0000000000000030 R15: 0000000000000000
FS: 00005555597c4500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8cbb470000 CR3: 0000000076e96000 CR4: 00000000003506e0
Call Trace:
<TASK>
sscanf+0xe3/0x140 lib/vsprintf.c:3722
split_huge_pages_write+0x391/0x1b60 mm/huge_memory.c:3179
full_proxy_write+0x110/0x1c0 fs/debugfs/file.c:244
vfs_write+0x299/0x9a0 fs/read_write.c:582
ksys_write+0x151/0x260 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f8cbb59e0d9
<TASK>
sscanf+0xe3/0x140 lib/vsprintf.c:3722
split_huge_pages_write+0x391/0x1b60 mm/huge_memory.c:3179
full_proxy_write+0x110/0x1c0 fs/debugfs/file.c:244
vfs_write+0x299/0x9a0 fs/read_write.c:582
ksys_write+0x151/0x260 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffcf85ae418 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8cbb825fa0 RCX: 00007f8cbb59e0d9
RDX: 0000000000000005 RSI: 0000200000000600 RDI: 0000000000000003
RBP: 00007f8cbb635024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8cbb825fac R14: 00007f8cbb825fa0 R15: 00007f8cbb825fa0
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:vsscanf+0x19a/0x2520 lib/vsprintf.c:3464
Code: 48 c7 c6 d0 6d 74 8e e8 64 72 07 f7 41 83 fe 25 74 4d 45 85 f6 0f 84 1e 22 00 00 48 ff c3 48 89 5c 24 78 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 bd 1b 00 00 41 0f b6 1f 45 0f b6 f6 44
RSP: 0018:ffffc900033b7640 EFLAGS: 00010246
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:vsscanf+0x19a/0x2520 lib/vsprintf.c:3464
Code: 48 c7 c6 d0 6d 74 8e e8 64 72 07 f7 41 83 fe 25 74 4d 45 85 f6 0f 84 1e 22 00 00 48 ff c3 48 89 5c 24 78 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 bd 1b 00 00 41 0f b6 1f 45 0f b6 f6 44
RAX: 0000000000000000 RBX: ffffffff8ad68661 RCX: 0000000000000001
RDX: ffffffff8a80047c RSI: ffffffff8e746dd0 RDI: 0000000000000030
RBP: ffffc900033b7770 R08: ffff88802a8b5a00 R09: 0000000000000002
RDX: ffffffff8a80047c RSI: ffffffff8e746dd0 RDI: 0000000000000030
R10: 0000000000000025 R11: 0000000000000000 R12: ffffffff8ad68660
R13: dffffc0000000000 R14: 0000000000000030 R15: 0000000000000000
FS: 00005555597c4500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8cbb470000 CR3: 0000000076e96000 CR4: 00000000003506e0
----------------
Code disassembly (best guess):
0: 48 c7 c6 d0 6d 74 8e mov $0xffffffff8e746dd0,%rsi
7: e8 64 72 07 f7 call 0xf7077270
c: 41 83 fe 25 cmp $0x25,%r14d
10: 74 4d je 0x5f
12: 45 85 f6 test %r14d,%r14d
15: 0f 84 1e 22 00 00 je 0x2239
1b: 48 ff c3 inc %rbx
1e: 48 89 5c 24 78 mov %rbx,0x78(%rsp)
23: 4c 89 f8 mov %r15,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 0f 85 bd 1b 00 00 jne 0x1bf4
37: 41 0f b6 1f movzbl (%r15),%ebx
3b: 45 0f b6 f6 movzbl %r14b,%r14d
3f: 44 rex.R
---
Code disassembly (best guess):
0: 48 c7 c6 d0 6d 74 8e mov $0xffffffff8e746dd0,%rsi
7: e8 64 72 07 f7 call 0xf7077270
c: 41 83 fe 25 cmp $0x25,%r14d
10: 74 4d je 0x5f
12: 45 85 f6 test %r14d,%r14d
15: 0f 84 1e 22 00 00 je 0x2239
1b: 48 ff c3 inc %rbx
1e: 48 89 5c 24 78 mov %rbx,0x78(%rsp)
23: 4c 89 f8 mov %r15,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 0f 85 bd 1b 00 00 jne 0x1bf4
37: 41 0f b6 1f movzbl (%r15),%ebx
3b: 45 0f b6 f6 movzbl %r14b,%r14d
3f: 44 rex.R
---
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