------------[ cut here ]------------
WARNING: CPU: 1 PID: 7349 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 7349 Comm: syz.3.1007 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 7d 7a 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 00 77 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: ffffffff81a0b690 RBX: 0000000000000000 RCX: ffff888074f48000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8ff3c048 R09: ffffffff8ff3c058
R10: ffffffff8ff3c050 R11: ffffffff8ff3c043 R12: ffff888074f497a8
R13: ffffc9000124f000 R14: ffffc90000dcff28 R15: 0000000000000000
FS: 00007fa7a75e56c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdadce58ff8 CR3: 000000007e11e000 CR4: 00000000003506e0
DR0: 0000200000001580 DR1: 0000000000000000 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+0x32/0x630
bpf_dispatcher_nop_func include/linux/bpf.h:890 [inline]
__bpf_prog_run include/linux/filter.h:621 [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+0x351/0x400 net/core/flow_dissector.c:896
__skb_flow_dissect+0x7dc/0x61d0 net/core/flow_dissector.c:1032
__skb_get_hash_net+0xda/0x4d0 net/core/flow_dissector.c:1713
skb_get_hash include/linux/skbuff.h:1440 [inline]
skb_tx_hash net/core/dev.c:3256 [inline]
netdev_pick_tx+0x337/0xad0 net/core/dev.c:4154
netdev_core_pick_tx+0x141/0x300 net/core/dev.c:4187
__dev_queue_xmit+0x797/0x2e50 net/core/dev.c:4262
hsr_xmit net/hsr/hsr_forward.c:340 [inline]
hsr_forward_do net/hsr/hsr_forward.c:431 [inline]
hsr_forward_skb+0xf82/0x16b0 net/hsr/hsr_forward.c:584
send_hsr_supervision_frame+0x5f7/0xb90 net/hsr/hsr_device.c:348
hsr_announce+0x168/0x310 net/hsr/hsr_device.c:404
call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648
expire_timers kernel/time/timer.c:1699 [inline]
__run_timers+0x56c/0x810 kernel/time/timer.c:1970
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983
handle_softirqs+0x336/0x830 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:rdtsc_ordered arch/x86/include/asm/msr.h:224 [inline]
RIP: 0010:read_tsc+0x3/0x10 arch/x86/kernel/tsc.c:1095
Code: e1 07 80 c1 03 38 c1 0f 8c d8 fe ff ff 4c 89 ff e8 d2 d8 92 00 e9 cb fe ff ff e8 68 ee 9d 08 0f 1f 84 00 00 00 00 00 0f 01 f9 <66> 90 48 c1 e2 20 48 09 d0 c3 0f 1f 00 48 c7 c0 8c 07 6d 8e 48 c1
RSP: 0018:ffffc90002ebfaa8 EFLAGS: 00000246
RAX: 0000000041beb2f7 RBX: ffffffff8cf5e8a0 RCX: 0000000000000001
RDX: 0000000000000067 RSI: 000000000007ffff RDI: ffffffff8cf5e8a0
RBP: ffffc90002ebfaf0 R08: ffff888074f48000 R09: 0000000000000002
R10: 000000000000dd86 R11: 0000000000000002 R12: 0000000000008ed4
R13: 0000002d1d082ff1 R14: ffffffff8d131570 R15: dffffc0000000000
tk_clock_read kernel/time/timekeeping.c:195 [inline]
fast_tk_get_delta_ns kernel/time/timekeeping.c:436 [inline]
__ktime_get_fast_ns kernel/time/timekeeping.c:452 [inline]
ktime_get_mono_fast_ns+0x83/0x1b0 kernel/time/timekeeping.c:492
bpf_prog_bdf4acbf7cd30181+0x3d/0x484
bpf_dispatcher_nop_func include/linux/bpf.h:890 [inline]
__bpf_prog_run include/linux/filter.h:621 [inline]
bpf_prog_run include/linux/filter.h:635 [inline]
bpf_test_run+0x4ae/0x800 net/bpf/test_run.c:119
bpf_prog_test_run_skb+0x9fb/0x1190 net/bpf/test_run.c:678
bpf_prog_test_run+0x31c/0x390 kernel/bpf/syscall.c:3374
__sys_bpf+0x5a5/0x6f0 kernel/bpf/syscall.c:4675
__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: 0033:0x7fa7a938e559
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:00007fa7a75e5028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fa7a9614fa0 RCX: 00007fa7a938e559
RDX: 0000000000000050 RSI: 0000200000001900 RDI: 000000000000000a
RBP: 00007fa7a9425b50 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa7a9615038 R14: 00007fa7a9614fa0 R15: 00007ffc52469868
----------------
Code disassembly (best guess):
0: e1 07 loope 0x9
2: 80 c1 03 add $0x3,%cl
5: 38 c1 cmp %al,%cl
7: 0f 8c d8 fe ff ff jl 0xfffffee5
d: 4c 89 ff mov %r15,%rdi
10: e8 d2 d8 92 00 call 0x92d8e7
15: e9 cb fe ff ff jmp 0xfffffee5
1a: e8 68 ee 9d 08 call 0x89dee87
1f: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1)
26: 00
27: 0f 01 f9 rdtscp
* 2a: 66 90 xchg %ax,%ax <-- trapping instruction
2c: 48 c1 e2 20 shl $0x20,%rdx
30: 48 09 d0 or %rdx,%rax
33: c3 ret
34: 0f 1f 00 nopl (%rax)
37: 48 c7 c0 8c 07 6d 8e mov $0xffffffff8e6d078c,%rax
3e: 48 rex.W
3f: c1 .byte 0xc1