------------[ cut here ]------------
WARNING: CPU: 1 PID: 7702 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 7702 Comm: syz.3.31971 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 5d 95 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 e0 91 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:ffffc90000dcfec8 EFLAGS: 00010246
RAX: ffffffff81a0b710 RBX: 0000000000000000 RCX: ffff888023689dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffc90000dd02f7 R09: ffffc90000dd02c4
R10: dffffc0000000000 R11: fffff520001ba05f R12: ffff88802368b548
R13: ffffc90000cc0030 R14: ffffc90000dcff28 R15: 0000000000000000
FS: 00007f7f07d036c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c356446 CR3: 000000004ca0b000 CR4: 00000000003506e0
DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
____bpf_probe_read_user kernel/trace/bpf_trace.c:166 [inline]
bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163
bpf_prog_f2594087b0f175cc+0x32/0x3c
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_prog_run_pin_on_cpu include/linux/filter.h:652 [inline]
bpf_flow_dissect+0x12b/0x3f0 net/core/flow_dissector.c:896
__skb_flow_dissect+0x7c5/0x6260 net/core/flow_dissector.c:1029
skb_flow_dissect_flow_keys include/linux/skbuff.h:1390 [inline]
___skb_get_hash+0x55/0x680 net/core/flow_dissector.c:1638
__skb_get_hash+0xd2/0x270 net/core/flow_dissector.c:1703
skb_get_hash include/linux/skbuff.h:1432 [inline]
skb_tx_hash net/core/dev.c:3256 [inline]
netdev_pick_tx+0x335/0xad0 net/core/dev.c:4153
netdev_core_pick_tx+0x12e/0x2e0 net/core/dev.c:4186
__dev_queue_xmit+0x756/0x2f80 net/core/dev.c:4261
hsr_xmit net/hsr/hsr_forward.c:340 [inline]
hsr_forward_do net/hsr/hsr_forward.c:431 [inline]
hsr_forward_skb+0xfd2/0x1700 net/hsr/hsr_forward.c:584
send_hsr_supervision_frame+0x5f7/0xb80 net/hsr/hsr_device.c:349
hsr_announce+0x168/0x310 net/hsr/hsr_device.c:405
call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648
expire_timers kernel/time/timer.c:1699 [inline]
__run_timers+0x53e/0x800 kernel/time/timer.c:1970
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983
handle_softirqs+0x339/0x830 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x13b/0x230 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:stack_trace_save+0x1/0xf0 kernel/stacktrace.c:114
Code: 89 44 89 e8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b 45 31 ed eb e7 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 <48> 89 e5 41 56 53 48 83 e4 e0 48 81 ec 80 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc900031ef290 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff88802368a340 RCX: ffff888023689dc0
RDX: 0000000000000002 RSI: 0000000000000010 RDI: ffffc900031ef2e0
RBP: ffffc900031ef3d8 R08: ffffc900031ef35f R09: ffffc900031ef2e0
R10: dffffc0000000000 R11: fffff5200063de6c R12: dffffc0000000000
R13: 1ffff110046d1468 R14: ffffc900031ef2e0 R15: 1ffff9200063de58
save_stack+0x121/0x230 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+0x8f/0x2a0 mm/page_alloc.c:3396
__vunmap+0x8b9/0xa50 mm/vmalloc.c:2628
bpf_check+0x9664/0xf270 kernel/bpf/verifier.c:14262
bpf_prog_load+0xfec/0x1510 kernel/bpf/syscall.c:2354
__sys_bpf+0x532/0x6f0 kernel/bpf/syscall.c:4657
__do_sys_bpf kernel/bpf/syscall.c:4761 [inline]
__se_sys_bpf kernel/bpf/syscall.c:4759 [inline]
__x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4759
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: 0033:0x7f7f09aa9e59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7f07d03028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f7f09d22fa0 RCX: 00007f7f09aa9e59
RDX: 0000000000000094 RSI: 00002000000005c0 RDI: 0000000000000005
RBP: 00007f7f09b3fd6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7f09d23038 R14: 00007f7f09d22fa0 R15: 00007ffd9dd6d648
----------------
Code disassembly (best guess):
0: 89 44 89 e8 mov %eax,-0x18(%rcx,%rcx,4)
4: 48 83 c4 10 add $0x10,%rsp
8: 5b pop %rbx
9: 41 5c pop %r12
b: 41 5d pop %r13
d: 41 5e pop %r14
f: 41 5f pop %r15
11: 5d pop %rbp
12: c3 ret
13: 0f 0b ud2
15: 45 31 ed xor %r13d,%r13d
18: eb e7 jmp 0x1
1a: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1)
21: 00 00 00
24: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
29: 55 push %rbp
* 2a: 48 89 e5 mov %rsp,%rbp <-- trapping instruction
2d: 41 56 push %r14
2f: 53 push %rbx
30: 48 83 e4 e0 and $0xffffffffffffffe0,%rsp
34: 48 81 ec 80 00 00 00 sub $0x80,%rsp
3b: 65 gs
3c: 48 rex.W
3d: 8b .byte 0x8b
3e: 04 25 add $0x25,%al