[Android 5.15] general protection fault in step_into
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syzbot
May 14, 2023, 10:01:39 AM5/14/23
to syzkaller-a...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 19c0ed55a470 Merge 5.15.106 into android13-5.15-lts
git tree: android13-5.15-lts
console+strace: https://syzkaller.appspot.com/x/log.txt?x=1752584a280000
kernel config: https://syzkaller.appspot.com/x/.config?x=e8bc8779358f24fb
dashboard link: https://syzkaller.appspot.com/bug?extid=08c6e82116d52c4fffaa
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1430fd3a280000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13b1653a280000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/8ade0e897782/disk-19c0ed55.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/203011b1fd4d/vmlinux-19c0ed55.xz
kernel image: https://storage.googleapis.com/syzbot-assets/7f39bb0b7ba9/bzImage-19c0ed55.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+08c6e8...@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: 294 Comm: syz-executor350 Not tainted 5.15.106-syzkaller-00249-g19c0ed55a470 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
RIP: 0010:traverse_mounts fs/namei.c:1376 [inline]
RIP: 0010:handle_mounts fs/namei.c:1496 [inline]
RIP: 0010:step_into+0x1b6/0xe70 fs/namei.c:1802
Code: 20 0f 85 99 0a 00 00 44 8b 3b 43 80 3c 2c 00 74 0a 48 8b 7c 24 18 e8 e9 d0 f3 ff 48 8b 9c 24 b8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 86 0a 00 00 8b 1b 89 de 81 e6 00 00 07
RSP: 0018:ffffc900009677e0 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffff88811deca780
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000967910 R08: ffffffff81bd6190 R09: ffffed1021fd9565
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200012cf13
R13: dffffc0000000000 R14: ffffc90000967c40 R15: 0000000000000011
FS: 00007f09e66f5700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f09e66d4718 CR3: 000000011ae5f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
walk_component+0x359/0x610 fs/namei.c:1978
link_path_walk+0x642/0xd90
path_lookupat+0xa0/0x450 fs/namei.c:2450
filename_lookup+0x230/0x5c0 fs/namei.c:2480
user_path_at_empty+0x43/0x1a0 fs/namei.c:2853
user_path_at include/linux/namei.h:57 [inline]
do_mount fs/namespace.c:3334 [inline]
__do_sys_mount fs/namespace.c:3545 [inline]
__se_sys_mount+0x285/0x3b0 fs/namespace.c:3522
__x64_sys_mount+0xbf/0xd0 fs/namespace.c:3522
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: 0033:0x7f09e6743469
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 81 14 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:00007f09e66f52f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f09e67cd4c0 RCX: 00007f09e6743469
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007f09e679b01c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 0000000000000003 R14: 00007f09e679b038 R15: 00007f09e67cd4c8
</TASK>
Modules linked in:
---[ end trace 9d3fd41dce8e96d3 ]---
RIP: 0010:traverse_mounts fs/namei.c:1376 [inline]
RIP: 0010:handle_mounts fs/namei.c:1496 [inline]
RIP: 0010:step_into+0x1b6/0xe70 fs/namei.c:1802
Code: 20 0f 85 99 0a 00 00 44 8b 3b 43 80 3c 2c 00 74 0a 48 8b 7c 24 18 e8 e9 d0 f3 ff 48 8b 9c 24 b8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 86 0a 00 00 8b 1b 89 de 81 e6 00 00 07
RSP: 0018:ffffc900009677e0 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffff88811deca780
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000967910 R08: ffffffff81bd6190 R09: ffffed1021fd9565
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200012cf13
R13: dffffc0000000000 R14: ffffc90000967c40 R15: 0000000000000011
FS: 00007f09e66f5700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f09e66d4718 CR3: 000000011ae5f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 20 0f and %cl,(%rdi)
2: 85 99 0a 00 00 44 test %ebx,0x4400000a(%rcx)
8: 8b 3b mov (%rbx),%edi
a: 43 80 3c 2c 00 cmpb $0x0,(%r12,%r13,1)
f: 74 0a je 0x1b
11: 48 8b 7c 24 18 mov 0x18(%rsp),%rdi
16: e8 e9 d0 f3 ff callq 0xfff3d104
1b: 48 8b 9c 24 b8 00 00 mov 0xb8(%rsp),%rbx
22: 00
23: 48 89 d8 mov %rbx,%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 86 0a 00 00 jne 0xabd
37: 8b 1b mov (%rbx),%ebx
39: 89 de mov %ebx,%esi
3b: 81 .byte 0x81
3c: e6 00 out %al,$0x0
3e: 00 07 add %al,(%rdi)
---
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 bug is already fixed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.
If you want to change bug's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the bug is a duplicate of another bug, 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: 19c0ed55a470 Merge 5.15.106 into android13-5.15-lts
git tree: android13-5.15-lts
console+strace: https://syzkaller.appspot.com/x/log.txt?x=1752584a280000
kernel config: https://syzkaller.appspot.com/x/.config?x=e8bc8779358f24fb
dashboard link: https://syzkaller.appspot.com/bug?extid=08c6e82116d52c4fffaa
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1430fd3a280000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13b1653a280000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/8ade0e897782/disk-19c0ed55.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/203011b1fd4d/vmlinux-19c0ed55.xz
kernel image: https://storage.googleapis.com/syzbot-assets/7f39bb0b7ba9/bzImage-19c0ed55.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+08c6e8...@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: 294 Comm: syz-executor350 Not tainted 5.15.106-syzkaller-00249-g19c0ed55a470 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
RIP: 0010:traverse_mounts fs/namei.c:1376 [inline]
RIP: 0010:handle_mounts fs/namei.c:1496 [inline]
RIP: 0010:step_into+0x1b6/0xe70 fs/namei.c:1802
Code: 20 0f 85 99 0a 00 00 44 8b 3b 43 80 3c 2c 00 74 0a 48 8b 7c 24 18 e8 e9 d0 f3 ff 48 8b 9c 24 b8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 86 0a 00 00 8b 1b 89 de 81 e6 00 00 07
RSP: 0018:ffffc900009677e0 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffff88811deca780
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000967910 R08: ffffffff81bd6190 R09: ffffed1021fd9565
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200012cf13
R13: dffffc0000000000 R14: ffffc90000967c40 R15: 0000000000000011
FS: 00007f09e66f5700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f09e66d4718 CR3: 000000011ae5f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
walk_component+0x359/0x610 fs/namei.c:1978
link_path_walk+0x642/0xd90
path_lookupat+0xa0/0x450 fs/namei.c:2450
filename_lookup+0x230/0x5c0 fs/namei.c:2480
user_path_at_empty+0x43/0x1a0 fs/namei.c:2853
user_path_at include/linux/namei.h:57 [inline]
do_mount fs/namespace.c:3334 [inline]
__do_sys_mount fs/namespace.c:3545 [inline]
__se_sys_mount+0x285/0x3b0 fs/namespace.c:3522
__x64_sys_mount+0xbf/0xd0 fs/namespace.c:3522
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: 0033:0x7f09e6743469
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 81 14 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:00007f09e66f52f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f09e67cd4c0 RCX: 00007f09e6743469
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007f09e679b01c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 0000000000000003 R14: 00007f09e679b038 R15: 00007f09e67cd4c8
</TASK>
Modules linked in:
---[ end trace 9d3fd41dce8e96d3 ]---
RIP: 0010:traverse_mounts fs/namei.c:1376 [inline]
RIP: 0010:handle_mounts fs/namei.c:1496 [inline]
RIP: 0010:step_into+0x1b6/0xe70 fs/namei.c:1802
Code: 20 0f 85 99 0a 00 00 44 8b 3b 43 80 3c 2c 00 74 0a 48 8b 7c 24 18 e8 e9 d0 f3 ff 48 8b 9c 24 b8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 86 0a 00 00 8b 1b 89 de 81 e6 00 00 07
RSP: 0018:ffffc900009677e0 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffff88811deca780
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000967910 R08: ffffffff81bd6190 R09: ffffed1021fd9565
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200012cf13
R13: dffffc0000000000 R14: ffffc90000967c40 R15: 0000000000000011
FS: 00007f09e66f5700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f09e66d4718 CR3: 000000011ae5f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 20 0f and %cl,(%rdi)
2: 85 99 0a 00 00 44 test %ebx,0x4400000a(%rcx)
8: 8b 3b mov (%rbx),%edi
a: 43 80 3c 2c 00 cmpb $0x0,(%r12,%r13,1)
f: 74 0a je 0x1b
11: 48 8b 7c 24 18 mov 0x18(%rsp),%rdi
16: e8 e9 d0 f3 ff callq 0xfff3d104
1b: 48 8b 9c 24 b8 00 00 mov 0xb8(%rsp),%rbx
22: 00
23: 48 89 d8 mov %rbx,%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 86 0a 00 00 jne 0xabd
37: 8b 1b mov (%rbx),%ebx
39: 89 de mov %ebx,%esi
3b: 81 .byte 0x81
3c: e6 00 out %al,$0x0
3e: 00 07 add %al,(%rdi)
---
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 bug is already fixed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.
If you want to change bug's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the bug is a duplicate of another bug, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
syzbot
May 14, 2023, 10:12:56 AM5/14/23
to syzkaller-a...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 6f4553626dbd ANDROID: GKI: gen_gki_modules_headers update ..
syzbot found the following issue on:
git tree: android14-6.1
console+strace: https://syzkaller.appspot.com/x/log.txt?x=10a372c6280000
kernel config: https://syzkaller.appspot.com/x/.config?x=69801444f67a0156
dashboard link: https://syzkaller.appspot.com/bug?extid=94108615026fc2c8a81e
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17945566280000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13f7573a280000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/8593dc5e480c/disk-6f455362.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/fa16a31e1070/vmlinux-6f455362.xz
kernel image: https://storage.googleapis.com/syzbot-assets/e740382200c5/bzImage-6f455362.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
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 04/28/2023
RIP: 0010:traverse_mounts fs/namei.c:1428 [inline]
RIP: 0010:handle_mounts fs/namei.c:1540 [inline]
RIP: 0010:step_into+0x1c4/0x1090 fs/namei.c:1831
Code: c0 0f 85 bb 0b 00 00 44 8b 3b 43 80 3c 34 00 74 0a 48 8b 7c 24 10 e8 5b 23 f3 ff 48 8b 9c 24 d8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 0f 85 a8 0b 00 00 8b 1b 89 de 81 e6 00 00 07
RSP: 0018:ffffc90000e378a0 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffff88810f235f00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000e379f0 R08: ffffffff81c5d769 R09: ffffed10223b0395
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920001c6f2f
R13: ffffc90000e37c20 R14: dffffc0000000000 R15: 0000000000000011
FS: 00007fb0c0241700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb0c0220718 CR3: 00000001223c5000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
walk_component fs/namei.c:1999 [inline]
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
link_path_walk+0x72c/0xee0 fs/namei.c:2320
path_lookupat+0xa0/0x450 fs/namei.c:2473
filename_lookup+0x251/0x600 fs/namei.c:2503
user_path_at_empty+0x43/0x1a0 fs/namei.c:2876
user_path_at include/linux/namei.h:57 [inline]
do_mount fs/namespace.c:3380 [inline]
__do_sys_mount fs/namespace.c:3591 [inline]
__se_sys_mount+0x285/0x3b0 fs/namespace.c:3568
__x64_sys_mount+0xbf/0xd0 fs/namespace.c:3568
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+0x63/0xcd
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
RIP: 0033:0x7fb0c028f469
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 81 14 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:00007fb0c02412f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fb0c03194c0 RCX: 00007fb0c028f469
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007fb0c02e701c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 0000000000000003 R14: 00007fb0c02e7038 R15: 00007fb0c03194c8
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:traverse_mounts fs/namei.c:1428 [inline]
RIP: 0010:handle_mounts fs/namei.c:1540 [inline]
RIP: 0010:step_into+0x1c4/0x1090 fs/namei.c:1831
Code: c0 0f 85 bb 0b 00 00 44 8b 3b 43 80 3c 34 00 74 0a 48 8b 7c 24 10 e8 5b 23 f3 ff 48 8b 9c 24 d8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 0f 85 a8 0b 00 00 8b 1b 89 de 81 e6 00 00 07
RSP: 0018:ffffc90000e378a0 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffff88810f235f00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000e379f0 R08: ffffffff81c5d769 R09: ffffed10223b0395
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920001c6f2f
R13: ffffc90000e37c20 R14: dffffc0000000000 R15: 0000000000000011
FS: 00007fb0c0241700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb0c0220718 CR3: 00000001223c5000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: c0 0f 85 rorb $0x85,(%rdi)
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
3: bb 0b 00 00 44 mov $0x4400000b,%ebx
8: 8b 3b mov (%rbx),%edi
a: 43 80 3c 34 00 cmpb $0x0,(%r12,%r14,1)
f: 74 0a je 0x1b
11: 48 8b 7c 24 10 mov 0x10(%rsp),%rdi
16: e8 5b 23 f3 ff callq 0xfff32376
1b: 48 8b 9c 24 d8 00 00 mov 0xd8(%rsp),%rbx
22: 00
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 0f b6 04 30 movzbl (%rax,%r14,1),%eax <-- trapping instruction
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
2f: 84 c0 test %al,%al
31: 0f 85 a8 0b 00 00 jne 0xbdf
syzbot
May 14, 2023, 10:12:56 AM5/14/23
to syzkaller-a...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 43c801dc3325 Revert "ASoC: hdac_hdmi: use set_stream() ins..
syzbot found the following issue on:
git tree: android13-5.10-lts
console+strace: https://syzkaller.appspot.com/x/log.txt?x=103428aa280000
kernel config: https://syzkaller.appspot.com/x/.config?x=8c298cd1af0b8136
dashboard link: https://syzkaller.appspot.com/bug?extid=0eeb26335ddeb506c6d0
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=122670f6280000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13a82fca280000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/df726002fbe5/disk-43c801dc.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/2b767931d62c/vmlinux-43c801dc.xz
kernel image: https://storage.googleapis.com/syzbot-assets/9048fda500c7/bzImage-43c801dc.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
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 04/28/2023
RIP: 0010:traverse_mounts fs/namei.c:1357 [inline]
RIP: 0010:handle_mounts fs/namei.c:1477 [inline]
RIP: 0010:step_into+0x1b9/0xec0 fs/namei.c:1782
Code: 24 0f 85 cf 0a 00 00 44 8b 3a 43 80 3c 2c 00 74 0a 48 8b 7c 24 18 e8 56 a2 f3 ff 48 8b 9c 24 b8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 c1 0a 00 00 8b 1b 89 de 81 e6 00 00 07
RSP: 0018:ffffc9000093f820 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffff88811ea7e2c0
RDX: ffffc9000093fc98 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000093f950 R08: ffffffff81b3ddff R09: ffffed102391c815
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000127f1b
R13: dffffc0000000000 R14: ffffc9000093fc60 R15: 0000000000000011
FS: 00007f1296949700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1296928718 CR3: 000000011eba5000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
walk_component+0x359/0x610 fs/namei.c:1958
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
link_path_walk+0x5c7/0xbd0
path_lookupat+0xa0/0x450 fs/namei.c:2426
filename_lookup+0x26a/0x6f0 fs/namei.c:2460
user_path_at_empty+0x40/0x50 fs/namei.c:2740
user_path_at include/linux/namei.h:60 [inline]
do_mount fs/namespace.c:3239 [inline]
__do_sys_mount fs/namespace.c:3450 [inline]
__se_sys_mount+0x285/0x3b0 fs/namespace.c:3427
__x64_sys_mount+0xbf/0xd0 fs/namespace.c:3427
do_syscall_64+0x34/0x70
entry_SYSCALL_64_after_hwframe+0x61/0xc6
RIP: 0033:0x7f1296997469
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 81 14 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:00007f12969492f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f1296a214c0 RCX: 00007f1296997469
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007f12969ef01c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 0000000000000003 R14: 00007f12969ef038 R15: 00007f1296a214c8
Modules linked in:
---[ end trace d9075ee4feb240b4 ]---
RIP: 0010:traverse_mounts fs/namei.c:1357 [inline]
RIP: 0010:handle_mounts fs/namei.c:1477 [inline]
RIP: 0010:step_into+0x1b9/0xec0 fs/namei.c:1782
Code: 24 0f 85 cf 0a 00 00 44 8b 3a 43 80 3c 2c 00 74 0a 48 8b 7c 24 18 e8 56 a2 f3 ff 48 8b 9c 24 b8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 c1 0a 00 00 8b 1b 89 de 81 e6 00 00 07
RSP: 0018:ffffc9000093f820 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffff88811ea7e2c0
RDX: ffffc9000093fc98 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000093f950 R08: ffffffff81b3ddff R09: ffffed102391c815
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000127f1b
R13: dffffc0000000000 R14: ffffc9000093fc60 R15: 0000000000000011
FS: 00007f1296949700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1296928718 CR3: 000000011eba5000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 24 0f and $0xf,%al
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
2: 85 cf test %ecx,%edi
4: 0a 00 or (%rax),%al
6: 00 44 8b 3a add %al,0x3a(%rbx,%rcx,4)
a: 43 80 3c 2c 00 cmpb $0x0,(%r12,%r13,1)
f: 74 0a je 0x1b
11: 48 8b 7c 24 18 mov 0x18(%rsp),%rdi
16: e8 56 a2 f3 ff callq 0xfff3a271
1b: 48 8b 9c 24 b8 00 00 mov 0xb8(%rsp),%rbx
22: 00
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax <-- trapping instruction
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
2f: 84 c0 test %al,%al
31: 0f 85 c1 0a 00 00 jne 0xaf8
syzbot
May 15, 2023, 5:02:26 AM5/15/23
to syzkaller-a...@googlegroups.com
syzbot has bisected this issue to:
commit 6be5b06e4195b002c52a1c2c82573ea7a76ce111
Author: Daniel Rosenberg <dro...@google.com>
Date: Thu Dec 2 22:38:56 2021 +0000
ANDROID: fuse-bpf v1
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17cdfb52280000
start commit: 43c801dc3325 Revert "ASoC: hdac_hdmi: use set_stream() ins..
git tree: android13-5.10-lts
final oops: https://syzkaller.appspot.com/x/report.txt?x=142dfb52280000
console output: https://syzkaller.appspot.com/x/log.txt?x=102dfb52280000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11f8dcc6280000
Reported-by: syzbot+0eeb26...@syzkaller.appspotmail.com
Fixes: 6be5b06e4195 ("ANDROID: fuse-bpf v1")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
commit 6be5b06e4195b002c52a1c2c82573ea7a76ce111
Author: Daniel Rosenberg <dro...@google.com>
Date: Thu Dec 2 22:38:56 2021 +0000
ANDROID: fuse-bpf v1
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17cdfb52280000
start commit: 43c801dc3325 Revert "ASoC: hdac_hdmi: use set_stream() ins..
git tree: android13-5.10-lts
final oops: https://syzkaller.appspot.com/x/report.txt?x=142dfb52280000
console output: https://syzkaller.appspot.com/x/log.txt?x=102dfb52280000
kernel config: https://syzkaller.appspot.com/x/.config?x=8c298cd1af0b8136
dashboard link: https://syzkaller.appspot.com/bug?extid=0eeb26335ddeb506c6d0
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16bef94e280000
dashboard link: https://syzkaller.appspot.com/bug?extid=0eeb26335ddeb506c6d0
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11f8dcc6280000
Reported-by: syzbot+0eeb26...@syzkaller.appspotmail.com
Fixes: 6be5b06e4195 ("ANDROID: fuse-bpf v1")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
syzbot
May 15, 2023, 9:01:22 PM5/15/23
to syzkaller-a...@googlegroups.com
syzbot has bisected this issue to:
commit 57f3ff9648991998d008ecf32f2f9e78a08bfb8b
Author: Daniel Rosenberg <dro...@google.com>
Date: Thu Dec 2 21:50:02 2021 +0000
ANDROID: fuse-bpf v1.1
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=138d8b21280000
start commit: 6f4553626dbd ANDROID: GKI: gen_gki_modules_headers update ..
git tree: android14-6.1
final oops: https://syzkaller.appspot.com/x/report.txt?x=104d8b21280000
console output: https://syzkaller.appspot.com/x/log.txt?x=178d8b21280000
kernel config: https://syzkaller.appspot.com/x/.config?x=69801444f67a0156
dashboard link: https://syzkaller.appspot.com/bug?extid=94108615026fc2c8a81e
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13c1b562280000
dashboard link: https://syzkaller.appspot.com/bug?extid=94108615026fc2c8a81e
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13aa771a280000
Reported-by: syzbot+941086...@syzkaller.appspotmail.com
Fixes: 57f3ff964899 ("ANDROID: fuse-bpf v1.1")
syzbot
May 17, 2023, 4:34:30 AM5/17/23
to syzkaller-a...@googlegroups.com
syzbot has bisected this issue to:
commit f5f4199c102aa676998b42abff60d071385c1c0c
Author: Daniel Rosenberg <dro...@google.com>
Date: Thu Dec 2 21:50:02 2021 +0000
ANDROID: fuse-bpf v1.1
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17224a1a280000
Date: Thu Dec 2 21:50:02 2021 +0000
ANDROID: fuse-bpf v1.1
start commit: 19c0ed55a470 Merge 5.15.106 into android13-5.15-lts
git tree: android13-5.15-lts
final oops: https://syzkaller.appspot.com/x/report.txt?x=14a24a1a280000
console output: https://syzkaller.appspot.com/x/log.txt?x=10a24a1a280000
kernel config: https://syzkaller.appspot.com/x/.config?x=e8bc8779358f24fb
dashboard link: https://syzkaller.appspot.com/bug?extid=08c6e82116d52c4fffaa
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14b0fd3a280000
dashboard link: https://syzkaller.appspot.com/bug?extid=08c6e82116d52c4fffaa
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1711bd52280000
Reported-by: syzbot+08c6e8...@syzkaller.appspotmail.com
Fixes: f5f4199c102a ("ANDROID: fuse-bpf v1.1")
syzbot
May 26, 2023, 7:08:44 AM5/26/23
to syzkaller-a...@googlegroups.com
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 6f4553626dbd0b15d25da5a3b2e05ad2be4780d4) on 2023/05/14:
general protection fault in step_into
Report: https://syzkaller.appspot.com/x/report.txt?x=15672626280000
lts (commit be100a8460e3fa44b0583513a909dcf1e096b3f1) on 2023/05/14:
Didn't crash.
upstream (commit 31f4104e392a10327f90006a61fcf1d4e7a79472) on 2023/05/14:
Didn't crash.
More details can be found at:
https://syzkaller.appspot.com/bug?extid=94108615026fc2c8a81e
syzbot has run the reproducer on other relevant kernel trees and got
the following results:
android14-6.1 (commit 6f4553626dbd0b15d25da5a3b2e05ad2be4780d4) on 2023/05/14:
general protection fault in step_into
Report: https://syzkaller.appspot.com/x/report.txt?x=15672626280000
lts (commit be100a8460e3fa44b0583513a909dcf1e096b3f1) on 2023/05/14:
Didn't crash.
upstream (commit 31f4104e392a10327f90006a61fcf1d4e7a79472) on 2023/05/14:
Didn't crash.
More details can be found at:
https://syzkaller.appspot.com/bug?extid=94108615026fc2c8a81e
Dmitry Vyukov
Jul 20, 2023, 8:32:39 AM7/20/23
to syzbot, Daniel Rosenberg, syzkaller-a...@googlegroups.com
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