------------[ cut here ]------------
WARNING: CPU: 0 PID: 5171 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 5171 Comm: rm 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:ffffc900000078d8 EFLAGS: 00010046
RAX: ffffffff81a0b710 RBX: 0000000000000008 RCX: ffff8880790fd940
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff8880790fd947 R09: 1ffff1100f21fb28
R10: dffffc0000000000 R11: ffffed100f21fb29 R12: ffff8880790ff0c8
R13: 00007ffffffff000 R14: ffffc90000007948 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffebbb35f9c CR3: 000000005be55000 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_2327afe6dc6529ba+0x3a/0x3cc
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+0x19e/0x350 kernel/trace/bpf_trace.c:1916
__traceiter_timer_start+0x73/0xc0 include/trace/events/timer.h:52
trace_timer_start include/trace/events/timer.h:52 [inline]
enqueue_timer+0x394/0x520 kernel/time/timer.c:586
internal_add_timer kernel/time/timer.c:611 [inline]
__mod_timer+0x911/0xd00 kernel/time/timer.c:1078
mrp_join_timer_arm net/802/mrp.c:596 [inline]
mrp_join_timer+0x142/0x180 net/802/mrp.c:611
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:trace_lock_acquire include/trace/events/lock.h:13 [inline]
RIP: 0010:lock_acquire+0xc1/0x400 kernel/locking/lockdep.c:5594
Code: 08 0f 83 a2 01 00 00 44 89 f0 c1 e8 06 48 8d 3c c5 e8 06 8a 8d be 08 00 00 00 e8 0a 3e 61 00 44 89 f0 48 0f a3 05 07 e1 2c 0c <73> 0d e8 78 ce 07 00 84 c0 0f 84 2d 02 00 00 48 c7 c0 84 3a 8a 8d
RSP: 0018:ffffc9000367f780 EFLAGS: 00000257
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff815d25d6
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8d8a06e8
RBP: ffffc9000367f8a0 R08: ffffffff8d8a06ef R09: 1ffffffff1b140dd
R10: dffffc0000000000 R11: fffffbfff1b140de R12: ffff88802c30b190
R13: 1ffff920006cfefc R14: 0000000000000000 R15: dffffc0000000000
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:364 [inline]
browse_rb mm/mmap.c:356 [inline]
validate_mm+0x31a/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
__do_munmap+0x383/0xdf0 mm/mmap.c:2856
do_munmap mm/mmap.c:2910 [inline]
munmap_vma_range mm/mmap.c:603 [inline]
__mmap_region mm/mmap.c:1757 [inline]
mmap_region+0x8b4/0x1650 mm/mmap.c:2933
do_mmap+0x819/0xe90 mm/mmap.c:1586
vm_mmap_pgoff+0x1c1/0x2d0 mm/util.c:551
ksys_mmap_pgoff+0x54b/0x790 mm/mmap.c:1635
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: 0033:0x7fe1530cf242
Code: 08 00 04 00 00 eb e2 90 41 f7 c1 ff 0f 00 00 75 27 55 89 cd 53 48 89 fb 48 85 ff 74 33 41 89 ea 48 89 df b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 5e 5b 5d c3 0f 1f 00 c7 05 46 40 01 00 16 00
RSP: 002b:00007ffebbb35bf8 EFLAGS: 00000206
ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007fe1530a7000 RCX: 00007fe1530cf242
RDX: 0000000000000003 RSI: 0000000000004000 RDI: 00007fe1530a7000
RBP: 0000000000000812 R08: 0000000000000003 R09: 00000000000be000
R10: 0000000000000812 R11: 0000000000000206 R12: 00007ffebbb35cb8
R13: 00007fe1530ab0c0 R14: 00007ffebbb36000 R15: 00000fffd7766b82
----------------
Code disassembly (best guess):
0: 08 0f or %cl,(%rdi)
2: 83 a2 01 00 00 44 89 andl $0xffffff89,0x44000001(%rdx)
9: f0 c1 e8 06 lock shr $0x6,%eax
d: 48 8d 3c c5 e8 06 8a lea -0x7275f918(,%rax,8),%rdi
14: 8d
15: be 08 00 00 00 mov $0x8,%esi
1a: e8 0a 3e 61 00 call 0x613e29
1f: 44 89 f0 mov %r14d,%eax
22: 48 0f a3 05 07 e1 2c bt %rax,0xc2ce107(%rip) # 0xc2ce131
29: 0c
* 2a: 73 0d jae 0x39 <-- trapping instruction
2c: e8 78 ce 07 00 call 0x7cea9
31: 84 c0 test %al,%al
33: 0f 84 2d 02 00 00 je 0x266
39: 48 c7 c0 84 3a 8a 8d mov $0xffffffff8d8a3a84,%rax