------------[ cut here ]------------
WARNING: CPU: 1 PID: 1554 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 1554 Comm: rm Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 7d 94 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 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:ffffc90000dcfd28 EFLAGS: 00010246
RAX: ffffffff81a08ea0 RBX: 0000000000000000 RCX: ffff888088cf9dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffc90000dd0157 R09: ffffc90000dd0124
R10: dffffc0000000000 R11: fffff520001ba02b R12: ffff888088cfb548
R13: ffffc900011c8030 R14: ffffc90000dcfd88 R15: 0000000000000000
FS: 00007fd207c13c80(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd207de7a90 CR3: 00000000637c3000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000200000000300 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+0x32/0xef0
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+0x792/0x60b0 net/core/flow_dissector.c:1024
skb_flow_dissect_flow_keys include/linux/skbuff.h:1390 [inline]
___skb_get_hash+0x55/0x680 net/core/flow_dissector.c:1583
__skb_get_hash+0xd2/0x270 net/core/flow_dissector.c:1648
skb_get_hash include/linux/skbuff.h:1432 [inline]
skb_tx_hash net/core/dev.c:3243 [inline]
netdev_pick_tx+0x335/0xad0 net/core/dev.c:4140
netdev_core_pick_tx+0x12e/0x2e0 net/core/dev.c:4173
__dev_queue_xmit+0x756/0x2fd0 net/core/dev.c:4248
neigh_hh_output include/net/neighbour.h:493 [inline]
neigh_output include/net/neighbour.h:507 [inline]
ip6_finish_output2+0x1051/0x1510 net/ipv6/ip6_output.c:130
dst_output include/net/dst.h:452 [inline]
NF_HOOK include/linux/netfilter.h:302 [inline]
ndisc_send_skb+0xc2a/0x1500 net/ipv6/ndisc.c:513
addrconf_rs_timer+0x2d1/0x630 net/ipv6/addrconf.c:3956
call_timer_fn+0x17b/0x540 kernel/time/timer.c:1451
expire_timers kernel/time/timer.c:1496 [inline]
__run_timers+0x53a/0x7f0 kernel/time/timer.c:1767
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
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:strlen+0x2e/0x60 lib/string.c:581
Code: 41 54 53 48 c7 c0 ff ff ff ff 49 be 00 00 00 00 00 fc ff df 48 89 fb 49 89 c7 48 89 d8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 11 <48> ff c3 49 8d 47 01 42 80 7c 3f 01 00 75 de eb 19 89 d9 80 e1 07
RSP: 0018:ffffc9000351f878 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff8a29d7cf RCX: dffffc0000000000
RDX: ffffffff81afbade RSI: ffff88802c593190 RDI: ffffffff8a29d7c0
RBP: ffffc9000351f990 R08: ffffffff8d89d8af R09: 1ffffffff1b13b15
R10: dffffc0000000000 R11: fffffbfff1b13b16 R12: dffffc0000000000
R13: 1ffff920006a3f1c R14: dffffc0000000000 R15: 000000000000000e
trace_event_get_offsets_lock include/trace/events/lock.h:39 [inline]
perf_trace_lock+0xbd/0x390 include/trace/events/lock.h:39
trace_lock_release include/trace/events/lock.h:58 [inline]
lock_release+0x84a/0x8a0 kernel/locking/lockdep.c:5634
__raw_spin_unlock include/linux/spinlock_api_smp.h:150 [inline]
_raw_spin_unlock+0x12/0x40 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:404 [inline]
browse_rb mm/mmap.c:363 [inline]
validate_mm+0x4ee/0x950 mm/mmap.c:423
__vma_adjust+0x17f3/0x1c10 mm/mmap.c:1029
vma_adjust include/linux/mm.h:2567 [inline]
__split_vma+0x34b/0x410 mm/mmap.c:-1
mprotect_fixup+0x5bb/0x800 mm/mprotect.c:483
do_mprotect_pkey+0x657/0x910 mm/mprotect.c:636
__do_sys_mprotect mm/mprotect.c:662 [inline]
__se_sys_mprotect mm/mprotect.c:659 [inline]
__x64_sys_mprotect+0x7c/0x90 mm/mprotect.c:659
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: 0033:0x7fd207fa22c7
Code: 89 3d fd 3f 01 00 eb 90 0f 1f 00 f7 d8 89 05 f0 3f 01 00 48 c7 c0 ff ff ff ff eb 91 0f 1f 80 00 00 00 00 b8 0a 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8d 0d c9 3f 01 00 f7 d8 89 01 48 83
RSP: 002b:00007ffde17e0488 EFLAGS: 00000206 ORIG_RAX: 000000000000000a
RAX: ffffffffffffffda RBX: 00007fd207c816b0 RCX: 00007fd207fa22c7
RDX: 0000000000000001 RSI: 0000000000001000 RDI: 00007fd207c75000
RBP: 00007ffde17e0750 R08: 0000000000000000 R09: 00007fd207d142e0
R10: 00007fd207c816b0 R11: 0000000000000206 R12: 0000000000000038
R13: 0000027b33508deb R14: 0000000000000000 R15: 00007fd207fb6310
----------------
Code disassembly (best guess):
0: 41 54 push %r12
2: 53 push %rbx
3: 48 c7 c0 ff ff ff ff mov $0xffffffffffffffff,%rax
a: 49 be 00 00 00 00 00 movabs $0xdffffc0000000000,%r14
11: fc ff df
14: 48 89 fb mov %rdi,%rbx
17: 49 89 c7 mov %rax,%r15
1a: 48 89 d8 mov %rbx,%rax
1d: 48 c1 e8 03 shr $0x3,%rax
21: 42 0f b6 04 30 movzbl (%rax,%r14,1),%eax
26: 84 c0 test %al,%al
28: 75 11 jne 0x3b
* 2a: 48 ff c3 inc %rbx <-- trapping instruction
2d: 49 8d 47 01 lea 0x1(%r15),%rax
31: 42 80 7c 3f 01 00 cmpb $0x0,0x1(%rdi,%r15,1)
37: 75 de jne 0x17
39: eb 19 jmp 0x54
3b: 89 d9 mov %ebx,%ecx
3d: 80 e1 07 and $0x7,%cl