general protection fault, probably for non-canonical address 0xdffffc000000000f: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000078-0x000000000000007f]
CPU: 1 PID: 5670 Comm: syz.0.92 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:is_same_group kernel/sched/fair.c:391 [inline]
RIP: 0010:find_matching_se kernel/sched/fair.c:428 [inline]
RIP: 0010:check_preempt_wakeup+0x3ab/0xb20 kernel/sched/fair.c:7418
Code: 8b 3f 49 83 c4 70 4c 89 e0 48 c1 e8 03 80 3c 28 00 74 08 4c 89 e7 e8 a4 93 66 00 4d 8b 24 24 4d 8d 6f 78 4c 89 e8 48 c1 e8 03 <80> 3c 28 00 74 08 4c 89 ef e8 87 93 66 00 49 8b 5d 00 4d 8d 6c 24
RSP: 0018:ffffc90000dd0ba0 EFLAGS: 00010006
RAX: 000000000000000f RBX: ffff8880b903a3c0 RCX: ffffffff81559c67
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8880583a0000
RBP: dffffc0000000000 R08: dffffc0000000000 R09: ffffed100b074001
R10: ffffed100b074001 R11: 1ffff1100b074000 R12: 0000000000000000
R13: 0000000000000078 R14: ffff8880583a0000 R15: 0000000000000000
FS: 00007ffb03e196c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000039c000 CR3: 0000000073bb3000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
check_preempt_curr+0xd2/0x270 kernel/sched/core.c:2116
ttwu_do_wakeup+0x27/0x4f0 kernel/sched/core.c:3580
ttwu_queue kernel/sched/core.c:3842 [inline]
try_to_wake_up+0x618/0x1050 kernel/sched/core.c:4165
hrtimer_wakeup+0x4a/0x60 kernel/time/hrtimer.c:1944
__run_hrtimer kernel/time/hrtimer.c:1690 [inline]
__hrtimer_run_queues+0x53d/0xc40 kernel/time/hrtimer.c:1754
hrtimer_interrupt+0x3bb/0x8d0 kernel/time/hrtimer.c:1816
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
__sysvec_apic_timer_interrupt+0x137/0x4a0 arch/x86/kernel/apic/apic.c:1114
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:unwind_next_frame+0x3f2/0x1d90 arch/x86/kernel/unwind_orc.c:461
Code: 03 43 0f b6 04 2c 84 c0 48 89 14 24 0f 85 af 13 00 00 4c 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 bf 13 00 00 41 0f b7 06 <41> 89 c7 41 83 e7 0f 66 41 83 ff 09 0f 87 d4 08 00 00 4c 89 74 24
RSP: 0018:ffffc90002e9eea8 EFLAGS: 00000246
RAX: 0000000000000005 RBX: ffffc90002e9ef68 RCX: ffffffff8d97cf70
RDX: ffffffff8e136d18 RSI: ffffffff8e136d00 RDI: ffffffff8134790c
RBP: ffffffff8400556e R08: 0000000000000009 R09: 0000000000000008
R10: fffff520005d3df9 R11: 1ffff920005d3df7 R12: 1ffffffff1c26da3
R13: dffffc0000000000 R14: ffffffff8e136d1c R15: ffffffff8e136d1d
arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x98/0xe0 kernel/stacktrace.c:122
save_stack+0xf3/0x1e0 mm/page_owner.c:119
__set_page_owner+0x41/0x2d0 mm/page_owner.c:181
prep_new_page mm/page_alloc.c:2426 [inline]
get_page_from_freelist+0x1b77/0x1c60 mm/page_alloc.c:4192
__alloc_pages+0x1e1/0x470 mm/page_alloc.c:5487
alloc_pages_vma+0x393/0x7c0 mm/mempolicy.c:2146
wp_page_copy+0x206/0x1fd0 mm/memory.c:3051
handle_pte_fault mm/memory.c:4668 [inline]
__handle_mm_fault mm/memory.c:4785 [inline]
handle_mm_fault+0x1eca/0x43c0 mm/memory.c:4883
do_user_addr_fault+0x489/0xc80 arch/x86/mm/fault.c:1357
handle_page_fault arch/x86/mm/fault.c:1445 [inline]
exc_page_fault+0x60/0x100 arch/x86/mm/fault.c:1501
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:606
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x40 arch/x86/lib/copy_user_64.S:206
Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 01 ca c3 90 90 90 90 90 90 90 0f 01 cb 83 fa 40 0f 82 70 ff ff ff 89 d1 a4 31 c0 0f 01 ca c3 90 90 90 90 90 90 90 90 90 90 89 d1 83 f8
RSP: 0018:ffffc90002e9faa0 EFLAGS: 00050206
RAX: ffffffff83d90001 RBX: 000020000039beff RCX: 0000000000000e80
RDX: 0000000000001000 RSI: ffff88800edb7180 RDI: 000020000039c000
RBP: 0000000000001000 R08: dffffc0000000000 R09: ffffed1001db7000
R10: 0000000000000000 R11: 0000000000000200 R12: ffff88800edb7000
R13: 0000000000001000 R14: 00007ffffffff000 R15: 000020000039ce80
copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
raw_copy_to_user arch/x86/include/asm/uaccess_64.h:58 [inline]
copyout lib/iov_iter.c:157 [inline]
copy_page_to_iter_iovec lib/iov_iter.c:228 [inline]
__copy_page_to_iter lib/iov_iter.c:861 [inline]
copy_page_to_iter+0x49e/0x910 lib/iov_iter.c:889
process_vm_rw_pages mm/process_vm_access.c:45 [inline]
process_vm_rw_single_vec mm/process_vm_access.c:117 [inline]
process_vm_rw_core mm/process_vm_access.c:215 [inline]
process_vm_rw+0x7e1/0xb00 mm/process_vm_access.c:283
__do_sys_process_vm_readv mm/process_vm_access.c:295 [inline]
__se_sys_process_vm_readv mm/process_vm_access.c:291 [inline]
__x64_sys_process_vm_readv+0xdc/0xf0 mm/process_vm_access.c:291
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7ffb047a9be9
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:00007ffb03e19038 EFLAGS: 00000246 ORIG_RAX: 0000000000000136
RAX: ffffffffffffffda RBX: 00007ffb049e0fa0 RCX: 00007ffb047a9be9
RDX: 0000000000000002 RSI: 0000200000008400 RDI: 0000000000000021
RBP: 00007ffb0482ce19 R08: 0000000000000286 R09: 0000000000000000
R10: 0000200000008640 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffb049e1038 R14: 00007ffb049e0fa0 R15: 00007ffcac7fbcc8
Modules linked in:
---[ end trace 7ab6c7263e4c0e51 ]---
RIP: 0010:is_same_group kernel/sched/fair.c:391 [inline]
RIP: 0010:find_matching_se kernel/sched/fair.c:428 [inline]
RIP: 0010:check_preempt_wakeup+0x3ab/0xb20 kernel/sched/fair.c:7418
Code: 8b 3f 49 83 c4 70 4c 89 e0 48 c1 e8 03 80 3c 28 00 74 08 4c 89 e7 e8 a4 93 66 00 4d 8b 24 24 4d 8d 6f 78 4c 89 e8 48 c1 e8 03 <80> 3c 28 00 74 08 4c 89 ef e8 87 93 66 00 49 8b 5d 00 4d 8d 6c 24
RSP: 0018:ffffc90000dd0ba0 EFLAGS: 00010006
RAX: 000000000000000f RBX: ffff8880b903a3c0 RCX: ffffffff81559c67
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8880583a0000
RBP: dffffc0000000000 R08: dffffc0000000000 R09: ffffed100b074001
R10: ffffed100b074001 R11: 1ffff1100b074000 R12: 0000000000000000
R13: 0000000000000078 R14: ffff8880583a0000 R15: 0000000000000000
FS: 00007ffb03e196c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000039c000 CR3: 0000000073bb3000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 8b 3f mov (%rdi),%edi
2: 49 83 c4 70 add $0x70,%r12
6: 4c 89 e0 mov %r12,%rax
9: 48 c1 e8 03 shr $0x3,%rax
d: 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1)
11: 74 08 je 0x1b
13: 4c 89 e7 mov %r12,%rdi
16: e8 a4 93 66 00 call 0x6693bf
1b: 4d 8b 24 24 mov (%r12),%r12
1f: 4d 8d 6f 78 lea 0x78(%r15),%r13
23: 4c 89 e8 mov %r13,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1) <-- trapping instruction
2e: 74 08 je 0x38
30: 4c 89 ef mov %r13,%rdi
33: e8 87 93 66 00 call 0x6693bf
38: 49 8b 5d 00 mov 0x0(%r13),%rbx
3c: 4d rex.WRB
3d: 8d .byte 0x8d
3e: 6c insb (%dx),%es:(%rdi)
3f: 24 .byte 0x24