Oops: general protection fault, probably for non-canonical address 0xdffffc0000000014: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x00000000000000a0-0x00000000000000a7]
CPU: 0 UID: 0 PID: 5347 Comm: syz.0.11 Not tainted 6.11.0-rc4-next-20240822-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:is_same_group kernel/sched/fair.c:411 [inline]
RIP: 0010:find_matching_se kernel/sched/fair.c:448 [inline]
RIP: 0010:check_preempt_wakeup_fair+0x471/0xb00 kernel/sched/fair.c:8679
Code: 00 00 00 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 30 71 95 00 4d 8b 3f 49 8d ae a0 00 00 00 48 89 e8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 ef e8 10 71 95 00 48 8b 5d 00 49 8d af
RSP: 0018:ffffc90000007ce0 EFLAGS: 00010006
RAX: 0000000000000014 RBX: ffff8880b903eb00 RCX: ffffffff81671258
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88801abd9e00
RBP: 00000000000000a0 R08: ffff88801abd9e07 R09: 1ffff1100357b3c0
R10: dffffc0000000000 R11: ffffed100357b3c1 R12: ffff8880b913ea40
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 00007f2f4c5c86c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32912ff8 CR3: 000000007f850000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
wakeup_preempt+0xd8/0x2a0 kernel/sched/core.c:2128
ttwu_do_activate+0x1f8/0x7e0 kernel/sched/core.c:3666
ttwu_queue kernel/sched/core.c:3940 [inline]
try_to_wake_up+0x8bc/0x1480 kernel/sched/core.c:4266
swake_up_locked kernel/sched/swait.c:29 [inline]
complete_with_flags kernel/sched/completion.c:24 [inline]
complete+0xac/0x1c0 kernel/sched/completion.c:47
csd_do_func kernel/smp.c:134 [inline]
__flush_smp_call_function_queue+0xb88/0x1690 kernel/smp.c:571
__sysvec_call_function_single+0xb8/0x430 arch/x86/kernel/smp.c:271
instr_sysvec_call_function_single arch/x86/kernel/smp.c:266 [inline]
sysvec_call_function_single+0x9e/0xc0 arch/x86/kernel/smp.c:266
asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:709
RIP: 0010:finish_task_switch+0x1ea/0x870 kernel/sched/core.c:5185
Code: c9 50 e8 69 f7 0b 00 48 83 c4 08 4c 89 f7 e8 7d 38 00 00 e9 de 04 00 00 4c 89 f7 e8 b0 e5 64 0a e8 cb 9f 37 00 fb 48 8b 5d c0 <48> 8d bb f8 15 00 00 48 89 f8 48 c1 e8 03 49 be 00 00 00 00 00 fc
RSP: 0018:ffffc900042a7388 EFLAGS: 00000282
RAX: 814440b8f79bab00 RBX: ffff88805a775a00 RCX: ffffffff94f95903
RDX: dffffc0000000000 RSI: ffffffff8c0ace40 RDI: ffffffff8c609f20
RBP: ffffc900042a73d0 R08: ffffffff901c12ef R09: 1ffffffff203825d
R10: dffffc0000000000 R11: fffffbfff203825e R12: 1ffff11017207f0b
R13: dffffc0000000000 R14: ffff8880b903ea40 R15: ffff8880b903f858
context_switch kernel/sched/core.c:5314 [inline]
__schedule+0x1852/0x4b30 kernel/sched/core.c:6677
preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6856
preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6880
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
__raw_read_unlock include/linux/rwlock_api_smp.h:233 [inline]
_raw_read_unlock+0x3e/0x50 kernel/locking/spinlock.c:260
sched_core_share_pid+0x691/0x7d0 kernel/sched/core_sched.c:229
__do_sys_prctl kernel/sys.c:2729 [inline]
__se_sys_prctl+0xe27/0x3990 kernel/sys.c:2457
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2f4b779e79
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2f4c5c8038 EFLAGS: 00000246 ORIG_RAX: 000000000000009d
RAX: ffffffffffffffda RBX: 00007f2f4b916058 RCX: 00007f2f4b779e79
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 000000000000003e
RBP: 00007f2f4b7e7916 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f2f4b916058 R15: 00007ffc387eae08
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:is_same_group kernel/sched/fair.c:411 [inline]
RIP: 0010:find_matching_se kernel/sched/fair.c:448 [inline]
RIP: 0010:check_preempt_wakeup_fair+0x471/0xb00 kernel/sched/fair.c:8679
Code: 00 00 00 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 30 71 95 00 4d 8b 3f 49 8d ae a0 00 00 00 48 89 e8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 ef e8 10 71 95 00 48 8b 5d 00 49 8d af
RSP: 0018:ffffc90000007ce0 EFLAGS: 00010006
RAX: 0000000000000014 RBX: ffff8880b903eb00 RCX: ffffffff81671258
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88801abd9e00
RBP: 00000000000000a0 R08: ffff88801abd9e07 R09: 1ffff1100357b3c0
R10: dffffc0000000000 R11: ffffed100357b3c1 R12: ffff8880b913ea40
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 00007f2f4c5c86c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32912ff8 CR3: 000000007f850000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 00 4c 89 f8 add %cl,-0x8(%rcx,%rcx,4)
6: 48 c1 e8 03 shr $0x3,%rax
a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1)
f: 74 08 je 0x19
11: 4c 89 ff mov %r15,%rdi
14: e8 30 71 95 00 call 0x957149
19: 4d 8b 3f mov (%r15),%r15
1c: 49 8d ae a0 00 00 00 lea 0xa0(%r14),%rbp
23: 48 89 e8 mov %rbp,%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 ef mov %rbp,%rdi
34: e8 10 71 95 00 call 0x957149
39: 48 8b 5d 00 mov 0x0(%rbp),%rbx
3d: 49 rex.WB
3e: 8d .byte 0x8d
3f: af scas %es:(%rdi),%eax