------------[ cut here ]------------
WARNING: CPU: 0 PID: 8711 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 8711 Comm: sed Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 3d f7 d8 ff 85 db 48 c7 c0 f2 ff ff ff 49 0f 44 c6 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 c0 f3 d8 ff <0f> 0b e9 1c ff ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c ea fe
RSP: 0018:ffffc900000079f8 EFLAGS: 00010246
RAX: ffffffff819ed760 RBX: 0000000000000008 RCX: ffff888026ddbb80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed1004dbb771
R10: ffffed1004dbb771 R11: 1ffff11004dbb770 R12: ffff888026ddd308
R13: 00007ffffffff000 R14: ffffc90000007a68 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000000be8e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
____bpf_probe_read_compat kernel/trace/bpf_trace.c:281 [inline]
bpf_probe_read_compat+0xdd/0x170 kernel/trace/bpf_trace.c:277
bpf_prog_ea44d77e194c9431+0x35/0x180
bpf_dispatcher_nop_func include/linux/bpf.h:888 [inline]
__bpf_prog_run include/linux/filter.h:628 [inline]
bpf_prog_run include/linux/filter.h:635 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline]
bpf_trace_run3+0x17e/0x320 kernel/trace/bpf_trace.c:1916
__bpf_trace_kmem_cache_free+0x99/0xc0 include/trace/events/kmem.h:138
trace_kmem_cache_free include/trace/events/kmem.h:138 [inline]
kmem_cache_free+0x1e7/0x210 mm/slub.c:3521
rcu_do_batch kernel/rcu/tree.c:2523 [inline]
rcu_core+0x962/0x15d0 kernel/rcu/tree.c:2763
handle_softirqs+0x328/0x820 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659
irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:160 [inline]
RIP: 0010:unwind_next_frame+0x184/0x1d90 arch/x86/kernel/unwind_orc.c:448
Code: c2 80 83 08 8a 4c 29 f5 0f 84 52 02 00 00 48 81 fd 00 00 00 81 0f 92 c0 48 81 fd c1 7d e0 89 0f 93 c1 08 c1 0f 85 c8 00 00 00 <48> c7 c0 00 00 00 81 49 89 ee 49 29 c6 49 c1 ee 08 8b 15 45 b5 87
RSP: 0018:ffffc9000308f4a8 EFLAGS: 00000246
RAX: 1ffff92000611e00 RBX: ffffc9000308f568 RCX: ffffffff960c2f00
RDX: ffffffff8a088380 RSI: ffffffff81ae8606 RDI: ffffffff8134790c
RBP: ffffffff81ae8605 R08: ffffc9000308f630 R09: 0000000000000004
R10: fffff52000611eb9 R11: 1ffff92000611eb7 R12: ffffffff81ae8606
R13: dffffc0000000000 R14: 0000000000000001 R15: ffffc9000308f5b0
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
__reset_page_owner+0x51/0x180 mm/page_owner.c:140
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1340 [inline]
free_pcp_prepare mm/page_alloc.c:1391 [inline]
free_unref_page_prepare+0x637/0x6c0 mm/page_alloc.c:3317
free_unref_page_list+0x122/0x7e0 mm/page_alloc.c:3433
release_pages+0x184b/0x1bb0 mm/swap.c:963
tlb_batch_pages_flush mm/mmu_gather.c:49 [inline]
tlb_flush_mmu_free mm/mmu_gather.c:240 [inline]
tlb_flush_mmu mm/mmu_gather.c:247 [inline]
tlb_finish_mmu+0x164/0x2e0 mm/mmu_gather.c:338
exit_mmap+0x3a6/0x5f0 mm/mmap.c:3218
__mmput+0x115/0x3b0 kernel/fork.c:1127
exit_mm+0x567/0x6c0 kernel/exit.c:550
do_exit+0x5a1/0x20a0 kernel/exit.c:870
do_group_exit+0x12e/0x300 kernel/exit.c:997
__do_sys_exit_group kernel/exit.c:1008 [inline]
__se_sys_exit_group kernel/exit.c:1006 [inline]
__x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1006
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: 0033:0x7f13921386c5
Code: Unable to access opcode bytes at RIP 0x7f139213869b.
RSP: 002b:00007ffd747b28f8 EFLAGS: 00000202
ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f1392239fe8 RCX: 00007f13921386c5
RDX: 00000000000000e7 RSI: ffffffffffffff88 RDI: 0000000000000000
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1392238680 R15: 00007f139223a000
irq event stamp: 9772
hardirqs last enabled at (9782): [] console_unlock+0xd2d/0x1200 kernel/printk/printk.c:2748
hardirqs last disabled at (9791): [] console_unlock+0x9ee/0x1200 kernel/printk/printk.c:2740
softirqs last enabled at (4744): [] __do_softirq kernel/softirq.c:610 [inline]
softirqs last enabled at (4744): [] invoke_softirq kernel/softirq.c:450 [inline]
softirqs last enabled at (4744): [] __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659
softirqs last disabled at (8543): [] __do_softirq kernel/softirq.c:610 [inline]
softirqs last disabled at (8543): [] invoke_softirq kernel/softirq.c:450 [inline]
softirqs last disabled at (8543): [] __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659
---[ end trace 680611171f3515a9 ]---
----------------
Code disassembly (best guess):
0: c2 80 83 ret $0x8380
3: 08 8a 4c 29 f5 0f or %cl,0xff5294c(%rdx)
9: 84 52 02 test %dl,0x2(%rdx)
c: 00 00 add %al,(%rax)
e: 48 81 fd 00 00 00 81 cmp $0xffffffff81000000,%rbp
15: 0f 92 c0 setb %al
18: 48 81 fd c1 7d e0 89 cmp $0xffffffff89e07dc1,%rbp
1f: 0f 93 c1 setae %cl
22: 08 c1 or %al,%cl
24: 0f 85 c8 00 00 00 jne 0xf2
* 2a: 48 c7 c0 00 00 00 81 mov $0xffffffff81000000,%rax <-- trapping instruction
31: 49 89 ee mov %rbp,%r14
34: 49 29 c6 sub %rax,%r14
37: 49 c1 ee 08 shr $0x8,%r14
3b: 8b .byte 0x8b
3c: 15 .byte 0x15
3d: 45 b5 87 rex.RB mov $0x87,%r13b