[v5.15] general protection fault in inherit_task_group
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syzbot
Oct 27, 2023, 2:32:22 PM10/27/23
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 12952a23a5da Linux 5.15.137
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=16bd391d680000
kernel config: https://syzkaller.appspot.com/x/.config?x=fec74236cf840914
dashboard link: https://syzkaller.appspot.com/bug?extid=f71fb831af7a7dffea27
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=124bbcc7680000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/7e2dc2318d41/disk-12952a23.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/753b1c98a896/vmlinux-12952a23.xz
kernel image: https://storage.googleapis.com/syzbot-assets/2ed1ab0d1e32/bzImage-12952a23.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+f71fb8...@syzkaller.appspotmail.com
general protection fault, probably for non-canonical address 0xdffffc0000000011: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000088-0x000000000000008f]
CPU: 0 PID: 3656 Comm: syz-executor.5 Not tainted 5.15.137-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
RIP: 0010:inherit_group kernel/events/core.c:13280 [inline]
RIP: 0010:inherit_task_group+0x276/0x710 kernel/events/core.c:13327
Code: 81 c3 8c 00 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 3a 04 00 00 8b 1b 49 81 c6 8c 00 00 00 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 3a 04 00 00 41 89 1e e9 98 fe ff ff e8
RSP: 0018:ffffc900035af8f0 EFLAGS: 00010207
RAX: 0000000000000011 RBX: 0000000000000000 RCX: ffff888022221dc0
RDX: 0000000000000000 RSI: ffffffff8a8b0be0 RDI: ffff88813fe6f610
RBP: ffff88813fe6f590 R08: dffffc0000000000 R09: fffffbfff1f79a41
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff888021f41dc0 R14: 000000000000008c R15: ffff88813fe6f590
FS: 00007f05f0aae6c0(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f05f0a8dd58 CR3: 000000001a5d7000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
perf_event_init_context kernel/events/core.c:13396 [inline]
perf_event_init_task+0x355/0x7a0 kernel/events/core.c:13449
copy_process+0x1570/0x3ef0 kernel/fork.c:2180
kernel_clone+0x210/0x960 kernel/fork.c:2604
__do_sys_clone kernel/fork.c:2721 [inline]
__se_sys_clone kernel/fork.c:2705 [inline]
__x64_sys_clone+0x23f/0x290 kernel/fork.c:2705
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: 0033:0x7f05f174dae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f05f0aae078 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f05f186d050 RCX: 00007f05f174dae9
RDX: 0000000000000000 RSI: 0000000001000000 RDI: 00000000c0920400
RBP: 00007f05f179947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 000000000000006e R14: 00007f05f186d050 R15: 00007ffd2c93dcc8
</TASK>
Modules linked in:
---[ end trace 1e3d01613877a0ab ]---
RIP: 0010:inherit_group kernel/events/core.c:13280 [inline]
RIP: 0010:inherit_task_group+0x276/0x710 kernel/events/core.c:13327
Code: 81 c3 8c 00 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 3a 04 00 00 8b 1b 49 81 c6 8c 00 00 00 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 3a 04 00 00 41 89 1e e9 98 fe ff ff e8
RSP: 0018:ffffc900035af8f0 EFLAGS: 00010207
RAX: 0000000000000011 RBX: 0000000000000000 RCX: ffff888022221dc0
RDX: 0000000000000000 RSI: ffffffff8a8b0be0 RDI: ffff88813fe6f610
RBP: ffff88813fe6f590 R08: dffffc0000000000 R09: fffffbfff1f79a41
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff888021f41dc0 R14: 000000000000008c R15: ffff88813fe6f590
FS: 00007f05f0aae6c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555659f938 CR3: 000000001a5d7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 81 c3 8c 00 00 00 add $0x8c,%ebx
6: 48 89 d8 mov %rbx,%rax
9: 48 c1 e8 03 shr $0x3,%rax
d: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax
12: 84 c0 test %al,%al
14: 0f 85 3a 04 00 00 jne 0x454
1a: 8b 1b mov (%rbx),%ebx
1c: 49 81 c6 8c 00 00 00 add $0x8c,%r14
23: 4c 89 f0 mov %r14,%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 3a 04 00 00 jne 0x471
37: 41 89 1e mov %ebx,(%r14)
3a: e9 98 fe ff ff jmp 0xfffffed7
3f: e8 .byte 0xe8
---
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 overwrite 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: 12952a23a5da Linux 5.15.137
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=16bd391d680000
kernel config: https://syzkaller.appspot.com/x/.config?x=fec74236cf840914
dashboard link: https://syzkaller.appspot.com/bug?extid=f71fb831af7a7dffea27
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=124bbcc7680000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/7e2dc2318d41/disk-12952a23.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/753b1c98a896/vmlinux-12952a23.xz
kernel image: https://storage.googleapis.com/syzbot-assets/2ed1ab0d1e32/bzImage-12952a23.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+f71fb8...@syzkaller.appspotmail.com
general protection fault, probably for non-canonical address 0xdffffc0000000011: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000088-0x000000000000008f]
CPU: 0 PID: 3656 Comm: syz-executor.5 Not tainted 5.15.137-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
RIP: 0010:inherit_group kernel/events/core.c:13280 [inline]
RIP: 0010:inherit_task_group+0x276/0x710 kernel/events/core.c:13327
Code: 81 c3 8c 00 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 3a 04 00 00 8b 1b 49 81 c6 8c 00 00 00 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 3a 04 00 00 41 89 1e e9 98 fe ff ff e8
RSP: 0018:ffffc900035af8f0 EFLAGS: 00010207
RAX: 0000000000000011 RBX: 0000000000000000 RCX: ffff888022221dc0
RDX: 0000000000000000 RSI: ffffffff8a8b0be0 RDI: ffff88813fe6f610
RBP: ffff88813fe6f590 R08: dffffc0000000000 R09: fffffbfff1f79a41
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff888021f41dc0 R14: 000000000000008c R15: ffff88813fe6f590
FS: 00007f05f0aae6c0(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f05f0a8dd58 CR3: 000000001a5d7000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
perf_event_init_context kernel/events/core.c:13396 [inline]
perf_event_init_task+0x355/0x7a0 kernel/events/core.c:13449
copy_process+0x1570/0x3ef0 kernel/fork.c:2180
kernel_clone+0x210/0x960 kernel/fork.c:2604
__do_sys_clone kernel/fork.c:2721 [inline]
__se_sys_clone kernel/fork.c:2705 [inline]
__x64_sys_clone+0x23f/0x290 kernel/fork.c:2705
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: 0033:0x7f05f174dae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f05f0aae078 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f05f186d050 RCX: 00007f05f174dae9
RDX: 0000000000000000 RSI: 0000000001000000 RDI: 00000000c0920400
RBP: 00007f05f179947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 000000000000006e R14: 00007f05f186d050 R15: 00007ffd2c93dcc8
</TASK>
Modules linked in:
---[ end trace 1e3d01613877a0ab ]---
RIP: 0010:inherit_group kernel/events/core.c:13280 [inline]
RIP: 0010:inherit_task_group+0x276/0x710 kernel/events/core.c:13327
Code: 81 c3 8c 00 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 3a 04 00 00 8b 1b 49 81 c6 8c 00 00 00 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 3a 04 00 00 41 89 1e e9 98 fe ff ff e8
RSP: 0018:ffffc900035af8f0 EFLAGS: 00010207
RAX: 0000000000000011 RBX: 0000000000000000 RCX: ffff888022221dc0
RDX: 0000000000000000 RSI: ffffffff8a8b0be0 RDI: ffff88813fe6f610
RBP: ffff88813fe6f590 R08: dffffc0000000000 R09: fffffbfff1f79a41
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff888021f41dc0 R14: 000000000000008c R15: ffff88813fe6f590
FS: 00007f05f0aae6c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555659f938 CR3: 000000001a5d7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 81 c3 8c 00 00 00 add $0x8c,%ebx
6: 48 89 d8 mov %rbx,%rax
9: 48 c1 e8 03 shr $0x3,%rax
d: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax
12: 84 c0 test %al,%al
14: 0f 85 3a 04 00 00 jne 0x454
1a: 8b 1b mov (%rbx),%ebx
1c: 49 81 c6 8c 00 00 00 add $0x8c,%r14
23: 4c 89 f0 mov %r14,%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 3a 04 00 00 jne 0x471
37: 41 89 1e mov %ebx,(%r14)
3a: e9 98 fe ff ff jmp 0xfffffed7
3f: e8 .byte 0xe8
---
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 overwrite 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
Oct 27, 2023, 3:35:27 PM10/27/23
to syzkaller...@googlegroups.com
syzbot has found a reproducer for the following issue on:
HEAD commit: 12952a23a5da Linux 5.15.137
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1322ed0d680000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12416dfb680000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/7e2dc2318d41/disk-12952a23.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/753b1c98a896/vmlinux-12952a23.xz
kernel image: https://storage.googleapis.com/syzbot-assets/2ed1ab0d1e32/bzImage-12952a23.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+f71fb8...@syzkaller.appspotmail.com
general protection fault, probably for non-canonical address 0xdffffc0000000011: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000088-0x000000000000008f]
CPU: 0 PID: 3690 Comm: syz-executor141 Not tainted 5.15.137-syzkaller #0
RAX: 0000000000000011 RBX: 0000000000000000 RCX: ffff888019369dc0
RDX: 0000000000000000 RSI: ffffffff8a8b0be0 RDI: ffff88813fe66470
RBP: ffff88813fe663f0 R08: dffffc0000000000 R09: fffffbfff1f79a3d
FS: 00007f922dea96c0(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 1a 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f922dea9228 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f922df98418 RCX: 00007f922df0dc39
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f922df64648
R13: 00007f922df9841c R14: 00000000c0920400 R15: 00007ffcff04e118
</TASK>
Modules linked in:
---[ end trace 380093cce355fc41 ]---
RAX: 0000000000000011 RBX: 0000000000000000 RCX: ffff888019369dc0
RDX: 0000000000000000 RSI: ffffffff8a8b0be0 RDI: ffff88813fe66470
RBP: ffff88813fe663f0 R08: dffffc0000000000 R09: fffffbfff1f79a3d
FS: 00007f922dea96c0(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
HEAD commit: 12952a23a5da Linux 5.15.137
git tree: linux-5.15.y
kernel config: https://syzkaller.appspot.com/x/.config?x=fec74236cf840914
dashboard link: https://syzkaller.appspot.com/bug?extid=f71fb831af7a7dffea27
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=1026d5fd680000
dashboard link: https://syzkaller.appspot.com/bug?extid=f71fb831af7a7dffea27
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12416dfb680000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/7e2dc2318d41/disk-12952a23.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/753b1c98a896/vmlinux-12952a23.xz
kernel image: https://storage.googleapis.com/syzbot-assets/2ed1ab0d1e32/bzImage-12952a23.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+f71fb8...@syzkaller.appspotmail.com
general protection fault, probably for non-canonical address 0xdffffc0000000011: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000088-0x000000000000008f]
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
RIP: 0010:inherit_group kernel/events/core.c:13280 [inline]
RIP: 0010:inherit_task_group+0x276/0x710 kernel/events/core.c:13327
Code: 81 c3 8c 00 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 3a 04 00 00 8b 1b 49 81 c6 8c 00 00 00 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 3a 04 00 00 41 89 1e e9 98 fe ff ff e8
RSP: 0018:ffffc9000359f8f0 EFLAGS: 00010207
RIP: 0010:inherit_group kernel/events/core.c:13280 [inline]
RIP: 0010:inherit_task_group+0x276/0x710 kernel/events/core.c:13327
Code: 81 c3 8c 00 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 3a 04 00 00 8b 1b 49 81 c6 8c 00 00 00 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 3a 04 00 00 41 89 1e e9 98 fe ff ff e8
RAX: 0000000000000011 RBX: 0000000000000000 RCX: ffff888019369dc0
RDX: 0000000000000000 RSI: ffffffff8a8b0be0 RDI: ffff88813fe66470
RBP: ffff88813fe663f0 R08: dffffc0000000000 R09: fffffbfff1f79a3d
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff88807e348000 R14: 000000000000008c R15: ffff88813fe663f0
FS: 00007f922dea96c0(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000048 CR3: 000000001a3c4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
perf_event_init_context kernel/events/core.c:13396 [inline]
perf_event_init_task+0x355/0x7a0 kernel/events/core.c:13449
copy_process+0x1570/0x3ef0 kernel/fork.c:2180
kernel_clone+0x210/0x960 kernel/fork.c:2604
__do_sys_clone kernel/fork.c:2721 [inline]
__se_sys_clone kernel/fork.c:2705 [inline]
__x64_sys_clone+0x23f/0x290 kernel/fork.c:2705
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: 0033:0x7f922df0dc39
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
perf_event_init_context kernel/events/core.c:13396 [inline]
perf_event_init_task+0x355/0x7a0 kernel/events/core.c:13449
copy_process+0x1570/0x3ef0 kernel/fork.c:2180
kernel_clone+0x210/0x960 kernel/fork.c:2604
__do_sys_clone kernel/fork.c:2721 [inline]
__se_sys_clone kernel/fork.c:2705 [inline]
__x64_sys_clone+0x23f/0x290 kernel/fork.c:2705
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
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 1a 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f922dea9228 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f922df98418 RCX: 00007f922df0dc39
RDX: 0000000000000000 RSI: 0000000001000000 RDI: 00000000c0920400
RBP: 00007f922df98410 R08: 0000000000000000 R09: 00007f922dea96c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f922df64648
R13: 00007f922df9841c R14: 00000000c0920400 R15: 00007ffcff04e118
</TASK>
Modules linked in:
---[ end trace 380093cce355fc41 ]---
RIP: 0010:inherit_group kernel/events/core.c:13280 [inline]
RIP: 0010:inherit_task_group+0x276/0x710 kernel/events/core.c:13327
Code: 81 c3 8c 00 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 3a 04 00 00 8b 1b 49 81 c6 8c 00 00 00 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 3a 04 00 00 41 89 1e e9 98 fe ff ff e8
RSP: 0018:ffffc9000359f8f0 EFLAGS: 00010207
RIP: 0010:inherit_task_group+0x276/0x710 kernel/events/core.c:13327
Code: 81 c3 8c 00 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 3a 04 00 00 8b 1b 49 81 c6 8c 00 00 00 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 3a 04 00 00 41 89 1e e9 98 fe ff ff e8
RAX: 0000000000000011 RBX: 0000000000000000 RCX: ffff888019369dc0
RDX: 0000000000000000 RSI: ffffffff8a8b0be0 RDI: ffff88813fe66470
RBP: ffff88813fe663f0 R08: dffffc0000000000 R09: fffffbfff1f79a3d
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff88807e348000 R14: 000000000000008c R15: ffff88813fe663f0
FS: 00007f922dea96c0(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffcff1a29b0 CR3: 000000001a3c4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 81 c3 8c 00 00 00 add $0x8c,%ebx
6: 48 89 d8 mov %rbx,%rax
9: 48 c1 e8 03 shr $0x3,%rax
d: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax
12: 84 c0 test %al,%al
14: 0f 85 3a 04 00 00 jne 0x454
1a: 8b 1b mov (%rbx),%ebx
1c: 49 81 c6 8c 00 00 00 add $0x8c,%r14
23: 4c 89 f0 mov %r14,%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 3a 04 00 00 jne 0x471
37: 41 89 1e mov %ebx,(%r14)
3a: e9 98 fe ff ff jmp 0xfffffed7
3f: e8 .byte 0xe8
---
Code disassembly (best guess):
0: 81 c3 8c 00 00 00 add $0x8c,%ebx
6: 48 89 d8 mov %rbx,%rax
9: 48 c1 e8 03 shr $0x3,%rax
d: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax
12: 84 c0 test %al,%al
14: 0f 85 3a 04 00 00 jne 0x454
1a: 8b 1b mov (%rbx),%ebx
1c: 49 81 c6 8c 00 00 00 add $0x8c,%r14
23: 4c 89 f0 mov %r14,%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 3a 04 00 00 jne 0x471
37: 41 89 1e mov %ebx,(%r14)
3a: e9 98 fe ff ff jmp 0xfffffed7
3f: e8 .byte 0xe8
---
syzbot
Oct 28, 2023, 1:24:20 AM10/28/23
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 32c9cdbe383c Linux 6.1.60
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=144db7b9680000
kernel config: https://syzkaller.appspot.com/x/.config?x=5bcc91053514ae0c
dashboard link: https://syzkaller.appspot.com/bug?extid=683019b11d2a243bc029
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/68a8580b551d/disk-32c9cdbe.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/7303591fa65e/vmlinux-32c9cdbe.xz
kernel image: https://storage.googleapis.com/syzbot-assets/ac9251a4108d/bzImage-32c9cdbe.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+683019...@syzkaller.appspotmail.com
general protection fault, probably for non-canonical address 0xdffffc0000000011: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000088-0x000000000000008f]
CPU: 1 PID: 3733 Comm: syz-executor.4 Not tainted 6.1.60-syzkaller #0
RIP: 0010:inherit_task_group+0x343/0x7f0 kernel/events/core.c:13343
Code: 81 c3 8c 00 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 52 04 00 00 8b 1b 49 81 c6 8c 00 00 00 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 52 04 00 00 41 89 1e e9 cb fd ff ff 4c
RSP: 0018:ffffc9000485f8f0 EFLAGS: 00010207
RAX: 0000000000000011 RBX: 0000000000000000 RCX: ffff88807641bb80
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff888019be8c70
RBP: ffff888019be8bf0 R08: ffffffff81b3c25b R09: fffffbfff2091863
FS: 00007f21f9f4e6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
perf_event_init_task+0x355/0x7a0 kernel/events/core.c:13465
copy_process+0x1737/0x4060 kernel/fork.c:2241
kernel_clone+0x222/0x920 kernel/fork.c:2682
__do_sys_clone kernel/fork.c:2823 [inline]
__se_sys_clone kernel/fork.c:2807 [inline]
__x64_sys_clone+0x231/0x280 kernel/fork.c:2807
RIP: 0033:0x7f21f927cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f21f9f4e078 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f21f939c050 RCX: 00007f21f927cae9
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:inherit_group kernel/events/core.c:13296 [inline]
RIP: 0010:inherit_task_group+0x343/0x7f0 kernel/events/core.c:13343
Code: 81 c3 8c 00 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 52 04 00 00 8b 1b 49 81 c6 8c 00 00 00 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 52 04 00 00 41 89 1e e9 cb fd ff ff 4c
RSP: 0018:ffffc9000485f8f0 EFLAGS: 00010207
RAX: 0000000000000011 RBX: 0000000000000000 RCX: ffff88807641bb80
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff888019be8c70
RBP: ffff888019be8bf0 R08: ffffffff81b3c25b R09: fffffbfff2091863
FS: 00007f21f9f4e6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
3f: 4c rex.WR
---
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
syzbot found the following issue on:
HEAD commit: 32c9cdbe383c Linux 6.1.60
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=144db7b9680000
kernel config: https://syzkaller.appspot.com/x/.config?x=5bcc91053514ae0c
dashboard link: https://syzkaller.appspot.com/bug?extid=683019b11d2a243bc029
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=16bb5ffb680000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/68a8580b551d/disk-32c9cdbe.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/7303591fa65e/vmlinux-32c9cdbe.xz
kernel image: https://storage.googleapis.com/syzbot-assets/ac9251a4108d/bzImage-32c9cdbe.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
general protection fault, probably for non-canonical address 0xdffffc0000000011: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000088-0x000000000000008f]
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
RIP: 0010:inherit_group kernel/events/core.c:13296 [inline]
RIP: 0010:inherit_task_group+0x343/0x7f0 kernel/events/core.c:13343
Code: 81 c3 8c 00 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 52 04 00 00 8b 1b 49 81 c6 8c 00 00 00 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 52 04 00 00 41 89 1e e9 cb fd ff ff 4c
RSP: 0018:ffffc9000485f8f0 EFLAGS: 00010207
RAX: 0000000000000011 RBX: 0000000000000000 RCX: ffff88807641bb80
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff888019be8c70
RBP: ffff888019be8bf0 R08: ffffffff81b3c25b R09: fffffbfff2091863
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff888020143b80 R14: 000000000000008c R15: ffff888019be8bf0
FS: 00007f21f9f4e6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555611c788 CR3: 0000000023748000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
perf_event_init_context kernel/events/core.c:13412 [inline]
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
perf_event_init_task+0x355/0x7a0 kernel/events/core.c:13465
copy_process+0x1737/0x4060 kernel/fork.c:2241
kernel_clone+0x222/0x920 kernel/fork.c:2682
__do_sys_clone kernel/fork.c:2823 [inline]
__se_sys_clone kernel/fork.c:2807 [inline]
__x64_sys_clone+0x231/0x280 kernel/fork.c:2807
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: 0033:0x7f21f927cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f21f9f4e078 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f21f939c050 RCX: 00007f21f927cae9
RDX: 0000000000000000 RSI: 0000000001000000 RDI: 00000000c0920400
RBP: 00007f21f92c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 000000000000006e R14: 00007f21f939c050 R15: 00007fffb2c4bd48
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:inherit_group kernel/events/core.c:13296 [inline]
RIP: 0010:inherit_task_group+0x343/0x7f0 kernel/events/core.c:13343
Code: 81 c3 8c 00 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 52 04 00 00 8b 1b 49 81 c6 8c 00 00 00 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 52 04 00 00 41 89 1e e9 cb fd ff ff 4c
RSP: 0018:ffffc9000485f8f0 EFLAGS: 00010207
RAX: 0000000000000011 RBX: 0000000000000000 RCX: ffff88807641bb80
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff888019be8c70
RBP: ffff888019be8bf0 R08: ffffffff81b3c25b R09: fffffbfff2091863
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff888020143b80 R14: 000000000000008c R15: ffff888019be8bf0
FS: 00007f21f9f4e6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5400798000 CR3: 0000000023748000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 81 c3 8c 00 00 00 add $0x8c,%ebx
6: 48 89 d8 mov %rbx,%rax
9: 48 c1 e8 03 shr $0x3,%rax
d: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax
12: 84 c0 test %al,%al
14: 0f 85 52 04 00 00 jne 0x46c
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 81 c3 8c 00 00 00 add $0x8c,%ebx
6: 48 89 d8 mov %rbx,%rax
9: 48 c1 e8 03 shr $0x3,%rax
d: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax
12: 84 c0 test %al,%al
1a: 8b 1b mov (%rbx),%ebx
1c: 49 81 c6 8c 00 00 00 add $0x8c,%r14
23: 4c 89 f0 mov %r14,%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 52 04 00 00 jne 0x489
1c: 49 81 c6 8c 00 00 00 add $0x8c,%r14
23: 4c 89 f0 mov %r14,%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
37: 41 89 1e mov %ebx,(%r14)
3a: e9 cb fd ff ff jmp 0xfffffe0a
3f: 4c rex.WR
---
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.
#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
Oct 28, 2023, 3:13:19 AM10/28/23
to syzkaller...@googlegroups.com
syzbot has found a reproducer for the following issue on:
HEAD commit: 32c9cdbe383c Linux 6.1.60
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=120055eb680000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1339e2ab680000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/68a8580b551d/disk-32c9cdbe.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/7303591fa65e/vmlinux-32c9cdbe.xz
kernel image: https://storage.googleapis.com/syzbot-assets/ac9251a4108d/bzImage-32c9cdbe.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+683019...@syzkaller.appspotmail.com
general protection fault, probably for non-canonical address 0xdffffc0000000011: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000088-0x000000000000008f]
CPU: 0 PID: 16899 Comm: syz-executor297 Not tainted 6.1.60-syzkaller #0
RAX: 0000000000000011 RBX: 0000000000000000 RCX: ffff888078ee1dc0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88801f374dc0
RBP: ffff88801f374d40 R08: ffffffff81b3c25b R09: fffffbfff209185d
FS: 00007fed8ebcd6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 18 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fed8ebcd228 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fed8ec96308 RCX: 00007fed8ec0c519
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fed8ec96300 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fed8ec9630c
R13: 0000000000000005 R14: 00007fffaa248db0 R15: 00007fffaa248e98
RAX: 0000000000000011 RBX: 0000000000000000 RCX: ffff888078ee1dc0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88801f374dc0
RBP: ffff88801f374d40 R08: ffffffff81b3c25b R09: fffffbfff209185d
FS: 00007fed8ebcd6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
HEAD commit: 32c9cdbe383c Linux 6.1.60
git tree: linux-6.1.y
kernel config: https://syzkaller.appspot.com/x/.config?x=5bcc91053514ae0c
dashboard link: https://syzkaller.appspot.com/bug?extid=683019b11d2a243bc029
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=10239a1b680000
dashboard link: https://syzkaller.appspot.com/bug?extid=683019b11d2a243bc029
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1339e2ab680000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/68a8580b551d/disk-32c9cdbe.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/7303591fa65e/vmlinux-32c9cdbe.xz
kernel image: https://storage.googleapis.com/syzbot-assets/ac9251a4108d/bzImage-32c9cdbe.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+683019...@syzkaller.appspotmail.com
general protection fault, probably for non-canonical address 0xdffffc0000000011: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000088-0x000000000000008f]
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
RIP: 0010:inherit_group kernel/events/core.c:13296 [inline]
RIP: 0010:inherit_task_group+0x343/0x7f0 kernel/events/core.c:13343
Code: 81 c3 8c 00 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 52 04 00 00 8b 1b 49 81 c6 8c 00 00 00 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 52 04 00 00 41 89 1e e9 cb fd ff ff 4c
RSP: 0018:ffffc9000cb1f8f0 EFLAGS: 00010207
RIP: 0010:inherit_group kernel/events/core.c:13296 [inline]
RIP: 0010:inherit_task_group+0x343/0x7f0 kernel/events/core.c:13343
Code: 81 c3 8c 00 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 52 04 00 00 8b 1b 49 81 c6 8c 00 00 00 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 52 04 00 00 41 89 1e e9 cb fd ff ff 4c
RAX: 0000000000000011 RBX: 0000000000000000 RCX: ffff888078ee1dc0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88801f374dc0
RBP: ffff88801f374d40 R08: ffffffff81b3c25b R09: fffffbfff209185d
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff8880187cbb80 R14: 000000000000008c R15: ffff88801f374d40
FS: 00007fed8ebcd6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fed8ec38d20 CR3: 000000006be58000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
perf_event_init_context kernel/events/core.c:13412 [inline]
perf_event_init_task+0x355/0x7a0 kernel/events/core.c:13465
copy_process+0x1737/0x4060 kernel/fork.c:2241
kernel_clone+0x222/0x920 kernel/fork.c:2682
__do_sys_clone kernel/fork.c:2823 [inline]
__se_sys_clone kernel/fork.c:2807 [inline]
__x64_sys_clone+0x231/0x280 kernel/fork.c:2807
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
RIP: 0033:0x7fed8ec0c519
<TASK>
perf_event_init_context kernel/events/core.c:13412 [inline]
perf_event_init_task+0x355/0x7a0 kernel/events/core.c:13465
copy_process+0x1737/0x4060 kernel/fork.c:2241
kernel_clone+0x222/0x920 kernel/fork.c:2682
__do_sys_clone kernel/fork.c:2823 [inline]
__se_sys_clone kernel/fork.c:2807 [inline]
__x64_sys_clone+0x231/0x280 kernel/fork.c:2807
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
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 18 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fed8ebcd228 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fed8ec96308 RCX: 00007fed8ec0c519
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fed8ec96300 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fed8ec9630c
R13: 0000000000000005 R14: 00007fffaa248db0 R15: 00007fffaa248e98
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:inherit_group kernel/events/core.c:13296 [inline]
RIP: 0010:inherit_task_group+0x343/0x7f0 kernel/events/core.c:13343
Code: 81 c3 8c 00 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 52 04 00 00 8b 1b 49 81 c6 8c 00 00 00 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 52 04 00 00 41 89 1e e9 cb fd ff ff 4c
RSP: 0018:ffffc9000cb1f8f0 EFLAGS: 00010207
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:inherit_group kernel/events/core.c:13296 [inline]
RIP: 0010:inherit_task_group+0x343/0x7f0 kernel/events/core.c:13343
Code: 81 c3 8c 00 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 52 04 00 00 8b 1b 49 81 c6 8c 00 00 00 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 52 04 00 00 41 89 1e e9 cb fd ff ff 4c
RAX: 0000000000000011 RBX: 0000000000000000 RCX: ffff888078ee1dc0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88801f374dc0
RBP: ffff88801f374d40 R08: ffffffff81b3c25b R09: fffffbfff209185d
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff8880187cbb80 R14: 000000000000008c R15: ffff88801f374d40
FS: 00007fed8ebcd6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fed8ec38d20 CR3: 000000006be58000 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: 81 c3 8c 00 00 00 add $0x8c,%ebx
6: 48 89 d8 mov %rbx,%rax
9: 48 c1 e8 03 shr $0x3,%rax
d: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax
12: 84 c0 test %al,%al
14: 0f 85 52 04 00 00 jne 0x46c
1a: 8b 1b mov (%rbx),%ebx
1c: 49 81 c6 8c 00 00 00 add $0x8c,%r14
23: 4c 89 f0 mov %r14,%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 52 04 00 00 jne 0x489
37: 41 89 1e mov %ebx,(%r14)
3a: e9 cb fd ff ff jmp 0xfffffe0a
3f: 4c rex.WR
---
Code disassembly (best guess):
0: 81 c3 8c 00 00 00 add $0x8c,%ebx
6: 48 89 d8 mov %rbx,%rax
9: 48 c1 e8 03 shr $0x3,%rax
d: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax
12: 84 c0 test %al,%al
14: 0f 85 52 04 00 00 jne 0x46c
1a: 8b 1b mov (%rbx),%ebx
1c: 49 81 c6 8c 00 00 00 add $0x8c,%r14
23: 4c 89 f0 mov %r14,%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 52 04 00 00 jne 0x489
37: 41 89 1e mov %ebx,(%r14)
3a: e9 cb fd ff ff jmp 0xfffffe0a
3f: 4c rex.WR
---
syzbot
Dec 3, 2023, 8:22:08 PM12/3/23
to syzkaller...@googlegroups.com
syzbot suspects this issue was fixed by commit:
commit 21b07a2e6095ea57356527d20fe5bf2a5adbac3d
Author: Peter Zijlstra <pet...@infradead.org>
Date: Tue Oct 24 09:42:21 2023 +0000
perf/core: Fix potential NULL deref
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14d6ec6ae80000
start commit: 12952a23a5da Linux 5.15.137
git tree: linux-5.15.y
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15b7de1b680000
If the result looks correct, please mark the issue as fixed by replying with:
#syz fix: perf/core: Fix potential NULL deref
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
commit 21b07a2e6095ea57356527d20fe5bf2a5adbac3d
Author: Peter Zijlstra <pet...@infradead.org>
Date: Tue Oct 24 09:42:21 2023 +0000
perf/core: Fix potential NULL deref
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14d6ec6ae80000
start commit: 12952a23a5da Linux 5.15.137
git tree: linux-5.15.y
kernel config: https://syzkaller.appspot.com/x/.config?x=fec74236cf840914
dashboard link: https://syzkaller.appspot.com/bug?extid=f71fb831af7a7dffea27
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=122a5473680000
dashboard link: https://syzkaller.appspot.com/bug?extid=f71fb831af7a7dffea27
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15b7de1b680000
If the result looks correct, please mark the issue as fixed by replying with:
#syz fix: perf/core: Fix potential NULL deref
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
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