syzbot


invalid opcode in __traceiter_sched_wakeup_new

Status: premoderation: reported syz repro on 2025/08/21 20:01
Bug presence: origin:downstream
[Documentation on labels]
Reported-by: syzbot+9ae4da4912176637669c@syzkaller.appspotmail.com
First crash: 6d22h, last: 2d01h
Bug presence (3)
Date Name Commit Repro Result
2025/08/26 android14-6.1 (ToT) 47b374a18638 syz [report] invalid opcode in __traceiter_sched_wakeup_new
2025/08/26 lts (merge base) f2198ea7eb3e syz Didn't crash
2025/08/26 upstream (ToT) fab1beda7597 syz Didn't crash

Sample crash report:
CFI failure at __traceiter_sched_wakeup_new+0x7d/0xb0 include/trace/events/sched.h:185 (target: tp_stub_func+0x0/0x10; expected type: 0x389e96a6)
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 373 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__traceiter_sched_wakeup_new+0x7d/0xb0 include/trace/events/sched.h:185
Code: 49 8d 7e 08 48 89 f8 48 c1 e8 03 42 80 3c 20 00 74 05 e8 f6 61 69 00 49 8b 7f 08 48 89 de 41 ba 5a 69 61 c7 45 03 55 fc 74 02 <0f> 0b 41 ff d5 49 83 c6 18 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74
RSP: 0018:ffffc90000a47c00 EFLAGS: 00010817

RAX: 1ffff1102221b1d6 RBX: ffff88811d662880 RCX: ffff88811582d100
RDX: 0000000000000000 RSI: ffff88811d662880 RDI: ffffffff86f04080
RBP: ffffc90000a47c28 R08: dffffc0000000000 R09: fffffbfff0ee49fe
R10: 000000006ca1d066 R11: 1ffffffff0ee49fd R12: dffffc0000000000
R13: ffffffff817123b0 R14: ffff8881110d8ea8 R15: ffff8881110d8ea8
FS:  0000555586af2500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6e248e56c0 CR3: 000000012d121000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 trace_sched_wakeup_new include/trace/events/sched.h:185 [inline]
 wake_up_new_task+0x951/0x980 kernel/sched/core.c:4914
 kernel_clone+0x41f/0x810 kernel/fork.c:2896
 __do_sys_clone kernel/fork.c:3006 [inline]
 __se_sys_clone kernel/fork.c:2990 [inline]
 __x64_sys_clone+0x168/0x1b0 kernel/fork.c:2990
 x64_sys_call+0x990/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:57
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f6e23b85453
Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffe4fcb5658 EFLAGS: 00000246
 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6e23b85453
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
R10: 0000555586af27d0 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 00000000000089ed R15: 00007ffe4fcb57f0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__traceiter_sched_wakeup_new+0x7d/0xb0 include/trace/events/sched.h:185
Code: 49 8d 7e 08 48 89 f8 48 c1 e8 03 42 80 3c 20 00 74 05 e8 f6 61 69 00 49 8b 7f 08 48 89 de 41 ba 5a 69 61 c7 45 03 55 fc 74 02 <0f> 0b 41 ff d5 49 83 c6 18 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74
RSP: 0018:ffffc90000a47c00 EFLAGS: 00010817
RAX: 1ffff1102221b1d6 RBX: ffff88811d662880 RCX: ffff88811582d100
RDX: 0000000000000000 RSI: ffff88811d662880 RDI: ffffffff86f04080
RBP: ffffc90000a47c28 R08: dffffc0000000000 R09: fffffbfff0ee49fe
R10: 000000006ca1d066 R11: 1ffffffff0ee49fd R12: dffffc0000000000
R13: ffffffff817123b0 R14: ffff8881110d8ea8 R15: ffff8881110d8ea8
FS:  0000555586af2500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6e248e56c0 CR3: 000000012d121000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (5):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/08/26 04:19 android14-6.1 47b374a18638 bf27483f .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf invalid opcode in __traceiter_sched_wakeup_new
2025/08/26 00:32 android14-6.1 47b374a18638 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf invalid opcode in __traceiter_sched_wakeup_new
2025/08/26 00:31 android14-6.1 47b374a18638 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf invalid opcode in __traceiter_sched_wakeup_new
2025/08/21 20:04 android14-6.1 26fad7be44e2 3e79b825 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf invalid opcode in __traceiter_sched_wakeup_new
2025/08/21 20:01 android14-6.1 26fad7be44e2 3e79b825 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf invalid opcode in __traceiter_sched_wakeup_new
* Struck through repros no longer work on HEAD.