[Android 5.10] general protection fault in security_inode_getattr

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: e7daca75b4c3 ANDROID: GKI: db845c: Update symbols list and..
git tree: android13-5.10-lts
console+strace: https://syzkaller.appspot.com/x/log.txt?x=13f07295180000
kernel config: https://syzkaller.appspot.com/x/.config?x=1a6e39f6bdc97aed
dashboard link: https://syzkaller.appspot.com/bug?extid=bc21724b4b0f821fa06b
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=168b32c9180000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11f34231180000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/cec0e413e034/disk-e7daca75.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/e97d4453b5ff/vmlinux-e7daca75.xz
kernel image: https://storage.googleapis.com/syzbot-assets/3d97ddfb5394/bzImage-e7daca75.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+bc2172...@syzkaller.appspotmail.com

general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 0 PID: 286 Comm: syz-executor290 Not tainted 5.10.209-syzkaller-00001-ge7daca75b4c3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
RIP: 0010:d_backing_inode include/linux/dcache.h:558 [inline]
RIP: 0010:security_inode_getattr+0x47/0x130 security/security.c:1265
Code: 3f ff 49 8d 5f 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 87 d6 7c ff 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 6a d6 7c ff 48 8b 1b 48 83 c3 0c
RSP: 0018:ffffc90000bc6f90 EFLAGS: 00010206
RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff88811ee8bb40
RDX: 0000000000000000 RSI: ffffc90000bc7400 RDI: ffffc90000bc73f0
RBP: ffffc90000bc6fb8 R08: dffffc0000000000 R09: ffffc90000bc73f0
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90000bc7400
R13: dffffc0000000000 R14: 0000000000000000 R15: ffffc90000bc73f0
FS: 0000555556717480(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000011932e000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
vfs_getattr+0x26/0x70 fs/stat.c:129
ovl_copy_up_one fs/overlayfs/copy_up.c:882 [inline]
ovl_copy_up_flags+0x5af/0x2700 fs/overlayfs/copy_up.c:964
ovl_maybe_copy_up+0x15a/0x190 fs/overlayfs/copy_up.c:996
ovl_open+0xad/0x210 fs/overlayfs/file.c:156
do_dentry_open+0x7c1/0x10d0 fs/open.c:819
vfs_open fs/open.c:942 [inline]
dentry_open+0xb8/0x100 fs/open.c:958
file_open+0x2a7/0x650 fs/incfs/vfs.c:1450
do_dentry_open+0x7c1/0x10d0 fs/open.c:819
vfs_open+0x73/0x80 fs/open.c:942
do_open fs/namei.c:3397 [inline]
path_openat+0x2660/0x3000 fs/namei.c:3515
do_filp_open+0x21c/0x460 fs/namei.c:3542
do_sys_openat2+0x13f/0x6f0 fs/open.c:1217
do_sys_open fs/open.c:1233 [inline]
__do_sys_openat fs/open.c:1249 [inline]
__se_sys_openat fs/open.c:1244 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1244
do_syscall_64+0x34/0x70
entry_SYSCALL_64_after_hwframe+0x61/0xc6
RIP: 0033:0x7f3367ffa019
Code: 48 83 c4 28 c3 e8 67 17 00 00 0f 1f 80 00 00 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe3f58e9d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007ffe3f58e9e0 RCX: 00007f3367ffa019
RDX: 0000000000000002 RSI: 0000000020000080 RDI: 0000000000000004
RBP: 00007ffe3f58e9e8 R08: 00007f3367fc70a0 R09: 00007f3367fc70a0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe3f58ec48 R14: 0000000000000001 R15: 0000000000000001
Modules linked in:
---[ end trace 084dfe476fed37d8 ]---
RIP: 0010:d_backing_inode include/linux/dcache.h:558 [inline]
RIP: 0010:security_inode_getattr+0x47/0x130 security/security.c:1265
Code: 3f ff 49 8d 5f 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 87 d6 7c ff 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 6a d6 7c ff 48 8b 1b 48 83 c3 0c
RSP: 0018:ffffc90000bc6f90 EFLAGS: 00010206
RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff88811ee8bb40
RDX: 0000000000000000 RSI: ffffc90000bc7400 RDI: ffffc90000bc73f0
RBP: ffffc90000bc6fb8 R08: dffffc0000000000 R09: ffffc90000bc73f0
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90000bc7400
R13: dffffc0000000000 R14: 0000000000000000 R15: ffffc90000bc73f0
FS: 0000555556717480(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000011932e000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
0: ff 49 8d decl -0x73(%rcx)
3: 5f pop %rdi
4: 08 48 89 or %cl,-0x77(%rax)
7: d8 48 c1 fmuls -0x3f(%rax)
a: e8 03 42 80 3c call 0x3c804212
f: 28 00 sub %al,(%rax)
11: 74 08 je 0x1b
13: 48 89 df mov %rbx,%rdi
16: e8 87 d6 7c ff call 0xff7cd6a2
1b: 48 8b 1b mov (%rbx),%rbx
1e: 48 83 c3 30 add $0x30,%rbx
22: 48 89 d8 mov %rbx,%rax
25: 48 c1 e8 03 shr $0x3,%rax
* 29: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction
2e: 74 08 je 0x38
30: 48 89 df mov %rbx,%rdi
33: e8 6a d6 7c ff call 0xff7cd6a2
38: 48 8b 1b mov (%rbx),%rbx
3b: 48 83 c3 0c add $0xc,%rbx


---
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[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 8790a94475c9 ANDROID: ABI: Update symbol list for Exynos SoC
git tree: android14-6.1
console+strace: https://syzkaller.appspot.com/x/log.txt?x=17f7023a180000
kernel config: https://syzkaller.appspot.com/x/.config?x=54c503ca94c7e582
dashboard link: https://syzkaller.appspot.com/bug?extid=c58fbb225bcffe111d4a

compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40

syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12ecdf59180000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=170b4006180000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/bbb5b6f15e9a/disk-8790a944.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/f17ea2746c6f/vmlinux-8790a944.xz
kernel image: https://storage.googleapis.com/syzbot-assets/0ec4d0c2f0d4/bzImage-8790a944.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:

Reported-by: syzbot+c58fbb...@syzkaller.appspotmail.com

general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]

CPU: 1 PID: 298 Comm: syz-executor337 Not tainted 6.1.68-syzkaller-00095-g8790a94475c9 #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024

RIP: 0010:d_backing_inode include/linux/dcache.h:552 [inline]
RIP: 0010:security_inode_getattr+0x47/0x130 security/security.c:1359
Code: 30 ff 49 8d 5f 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 c7 1c 77 ff 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 aa 1c 77 ff 48 8b 1b 48 83 c3 0c
RSP: 0018:ffffc90000e86eb8 EFLAGS: 00010206

RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff8881095a5100
RDX: 0000000000000000 RSI: ffffc90000e873a0 RDI: ffffc90000e87390
RBP: ffffc90000e86ee0 R08: dffffc0000000000 R09: ffffc90000e87390
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90000e873a0
R13: dffffc0000000000 R14: ffffc90000e87390 R15: ffffc90000e87390
FS: 0000555555f84480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000

CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

CR2: 0000000000000000 CR3: 0000000109461000 CR4: 00000000003506a0

DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:

<TASK>
vfs_getattr+0x2a/0x310 fs/stat.c:158
ovl_copy_up_one fs/overlayfs/copy_up.c:974 [inline]
ovl_copy_up_flags+0x5c8/0x3b40 fs/overlayfs/copy_up.c:1060
ovl_maybe_copy_up+0x15a/0x190 fs/overlayfs/copy_up.c:1092
ovl_open+0x108/0x2a0 fs/overlayfs/file.c:155
do_dentry_open+0x891/0x1250 fs/open.c:884
vfs_open fs/open.c:1015 [inline]
dentry_open+0xb8/0x100 fs/open.c:1031
file_open+0x2a7/0x650 fs/incfs/vfs.c:1466
do_dentry_open+0x891/0x1250 fs/open.c:884
vfs_open+0x73/0x80 fs/open.c:1015
do_open fs/namei.c:3557 [inline]
path_openat+0x2532/0x2d60 fs/namei.c:3714
do_filp_open+0x230/0x480 fs/namei.c:3741
do_sys_openat2+0x13f/0x850 fs/open.c:1341
do_sys_open fs/open.c:1357 [inline]
__do_sys_openat fs/open.c:1373 [inline]
__se_sys_openat fs/open.c:1368 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1368
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f479e2c3019

Code: 48 83 c4 28 c3 e8 67 17 00 00 0f 1f 80 00 00 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 b8 ff ff ff f7 d8 64 89 01 48

RSP: 002b:00007ffcd6f3d108 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007ffcd6f3d110 RCX: 00007f479e2c3019

RDX: 0000000000000002 RSI: 0000000020000080 RDI: 0000000000000004

RBP: 00007ffcd6f3d118 R08: 00007f479e2900a0 R09: 00007f479e2900a0

R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000

R13: 00007ffcd6f3d378 R14: 0000000000000001 R15: 0000000000000001
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:d_backing_inode include/linux/dcache.h:552 [inline]
RIP: 0010:security_inode_getattr+0x47/0x130 security/security.c:1359
Code: 30 ff 49 8d 5f 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 c7 1c 77 ff 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 aa 1c 77 ff 48 8b 1b 48 83 c3 0c
RSP: 0018:ffffc90000e86eb8 EFLAGS: 00010206
RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff8881095a5100
RDX: 0000000000000000 RSI: ffffc90000e873a0 RDI: ffffc90000e87390
RBP: ffffc90000e86ee0 R08: dffffc0000000000 R09: ffffc90000e87390
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90000e873a0
R13: dffffc0000000000 R14: ffffc90000e87390 R15: ffffc90000e87390
FS: 0000555555f84480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000

CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

CR2: 0000000000000000 CR3: 0000000109461000 CR4: 00000000003506a0

DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------

Code disassembly (best guess):
0: 30 ff xor %bh,%bh
2: 49 8d 5f 08 lea 0x8(%r15),%rbx
6: 48 89 d8 mov %rbx,%rax
9: 48 c1 e8 03 shr $0x3,%rax
d: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1)
12: 74 08 je 0x1c
14: 48 89 df mov %rbx,%rdi
17: e8 c7 1c 77 ff call 0xff771ce3
1c: 48 8b 1b mov (%rbx),%rbx
1f: 48 83 c3 30 add $0x30,%rbx
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 48 89 df mov %rbx,%rdi
34: e8 aa 1c 77 ff call 0xff771ce3
39: 48 8b 1b mov (%rbx),%rbx
3c: 48 83 c3 0c add $0xc,%rbx

[syzbot]

Bug presence analysis results: the bug reproduces only on Android 6.1.

syzbot has run the reproducer on other relevant kernel trees and got
the following results:

android14-6.1 (commit eef3b6e52937) on 2024/03/27:
general protection fault in security_inode_getattr
Report: https://syzkaller.appspot.com/x/report.txt?x=13f7bbb9180000

lts (commit 883d1a956208) on 2024/03/27:
Didn't crash.

upstream (commit 7033999ecd7b) on 2024/03/26:
Didn't crash.

More details can be found at:
https://syzkaller.appspot.com/bug?extid=c58fbb225bcffe111d4a

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 993bed180178 Merge "Merge branch 'android13-5.15' into bra..
git tree: android13-5.15-lts
console+strace: https://syzkaller.appspot.com/x/log.txt?x=155898ce180000
kernel config: https://syzkaller.appspot.com/x/.config?x=49ce29477ba81e8f
dashboard link: https://syzkaller.appspot.com/bug?extid=c134c7c0e60ebbe77952

compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40

syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1355976e180000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=117d0409180000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/4098d24d4c8b/disk-993bed18.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/94fbc07ac02d/vmlinux-993bed18.xz
kernel image: https://storage.googleapis.com/syzbot-assets/eed14de06c19/bzImage-993bed18.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:

Reported-by: syzbot+c134c7...@syzkaller.appspotmail.com

general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]

CPU: 0 PID: 293 Comm: syz-executor246 Not tainted 5.15.148-syzkaller-00718-g993bed180178 #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024

RIP: 0010:d_backing_inode include/linux/dcache.h:562 [inline]
RIP: 0010:security_inode_getattr+0x47/0x130 security/security.c:1347
Code: 38 ff 49 8d 5f 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 37 04 7b ff 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 1a 04 7b ff 48 8b 1b 48 83 c3 0c
RSP: 0018:ffffc9000079eeb0 EFLAGS: 00010206
RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff8881195abb40
RDX: 0000000000000000 RSI: ffffc9000079f3e0 RDI: ffffc9000079f3d0
RBP: ffffc9000079eed8 R08: dffffc0000000000 R09: ffffc9000079f3d0
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc9000079f3e0
R13: dffffc0000000000 R14: ffffc9000079f3d0 R15: ffffc9000079f3d0
FS: 0000555556ef9480(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000

CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

CR2: 0000000000000000 CR3: 000000011ee5e000 CR4: 00000000003506b0

DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>

vfs_getattr+0x2a/0x320 fs/stat.c:157
ovl_copy_up_one fs/overlayfs/copy_up.c:961 [inline]
ovl_copy_up_flags+0x629/0x2d30 fs/overlayfs/copy_up.c:1047
ovl_maybe_copy_up+0x15a/0x190 fs/overlayfs/copy_up.c:1079
ovl_open+0xad/0x210 fs/overlayfs/file.c:152
do_dentry_open+0x81c/0xfd0 fs/open.c:828
vfs_open fs/open.c:958 [inline]
dentry_open+0xb8/0x100 fs/open.c:974
file_open+0x2a7/0x650 fs/incfs/vfs.c:1465
do_dentry_open+0x81c/0xfd0 fs/open.c:828
vfs_open+0x73/0x80 fs/open.c:958
do_open fs/namei.c:3614 [inline]
path_openat+0x26f0/0x2f40 fs/namei.c:3748
do_filp_open+0x21c/0x460 fs/namei.c:3775
do_sys_openat2+0x13f/0x830 fs/open.c:1234
do_sys_open fs/open.c:1250 [inline]
__do_sys_openat fs/open.c:1266 [inline]
__se_sys_openat fs/open.c:1261 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1261
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f8853a75019

Code: 48 83 c4 28 c3 e8 67 17 00 00 0f 1f 80 00 00 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 b8 ff ff ff f7 d8 64 89 01 48

RSP: 002b:00007fff58abf188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fff58abf190 RCX: 00007f8853a75019

RDX: 0000000000000002 RSI: 0000000020000080 RDI: 0000000000000004

RBP: 00007fff58abf198 R08: 00007f8853a420a0 R09: 00007f8853a420a0

R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000

R13: 00007fff58abf3f8 R14: 0000000000000001 R15: 0000000000000001
</TASK>
Modules linked in:
---[ end trace 63ce3a5a71cfa2a5 ]---
RIP: 0010:d_backing_inode include/linux/dcache.h:562 [inline]
RIP: 0010:security_inode_getattr+0x47/0x130 security/security.c:1347
Code: 38 ff 49 8d 5f 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 37 04 7b ff 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 1a 04 7b ff 48 8b 1b 48 83 c3 0c
RSP: 0018:ffffc9000079eeb0 EFLAGS: 00010206
RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff8881195abb40
RDX: 0000000000000000 RSI: ffffc9000079f3e0 RDI: ffffc9000079f3d0
RBP: ffffc9000079eed8 R08: dffffc0000000000 R09: ffffc9000079f3d0
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc9000079f3e0
R13: dffffc0000000000 R14: ffffc9000079f3d0 R15: ffffc9000079f3d0
FS: 0000555556ef9480(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000

CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

CR2: 0000000000000000 CR3: 000000011ee5e000 CR4: 00000000003506b0

DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):

0: 38 ff cmp %bh,%bh

2: 49 8d 5f 08 lea 0x8(%r15),%rbx
6: 48 89 d8 mov %rbx,%rax
9: 48 c1 e8 03 shr $0x3,%rax
d: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1)
12: 74 08 je 0x1c
14: 48 89 df mov %rbx,%rdi

17: e8 37 04 7b ff call 0xff7b0453

1c: 48 8b 1b mov (%rbx),%rbx
1f: 48 83 c3 30 add $0x30,%rbx
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 48 89 df mov %rbx,%rdi

34: e8 1a 04 7b ff call 0xff7b0453