------------[ cut here ]------------
WARNING: CPU: 1 PID: 3562 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 3562 Comm: udevd 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:ffffc90000dcfec8 EFLAGS: 00010246
RAX: ffffffff81a08ea0 RBX: 0000000000000000 RCX: ffff88807dc13b80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffc90000dd02f7 R09: ffffc90000dd02c4
R10: dffffc0000000000 R11: fffff520001ba05f R12: ffff88807dc15308
R13: ffffc90001186030 R14: ffffc90000dcff28 R15: 0000000000000000
FS: 00007fa05d3db880(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557430ea28 CR3: 000000007d507000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 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+0x32/0xe80
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
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: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:instrument_atomic_read include/linux/instrumented.h:71 [inline]
RIP: 0010:test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
RIP: 0010:tomoyo_check_acl+0x2d6/0x3f0 security/tomoyo/domain.c:184
Code: 00 00 4d 8d 65 01 41 c1 e5 04 49 81 c5 e0 08 00 00 4d 8d 74 24 ff 44 89 f7 c1 ef 03 81 e7 f8 1f 00 00 4c 8b 7c 24 28 4c 01 ff 08 00 00 00 e8 00 91 1a fe 31 f6 4d 0f a3 37 40 0f 93 c5 40 0f
RSP: 0018:ffffc90002e5fa30 EFLAGS: 00000282
RAX: ffffffff83a3947d RBX: dffffc0000000000 RCX: ffff88807dc13b80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88802b2d08c8
RBP: ffff88802b2d0801 R08: ffff88802b2d08cf R09: 1ffff1100565a119
R10: dffffc0000000000 R11: ffffed100565a11a R12: 00000000000000f5
R13: 0000000000001820 R14: 00000000000000f4 R15: ffff88802b2d08b0
tomoyo_path_permission+0x1b4/0x380 security/tomoyo/file.c:586
tomoyo_path_perm+0x423/0x5d0 security/tomoyo/file.c:838
security_inode_getattr+0xcf/0x120 security/security.c:1348
vfs_getattr+0x26/0x3a0 fs/stat.c:157
vfs_fstat fs/stat.c:182 [inline]
__do_sys_newfstat fs/stat.c:421 [inline]
__se_sys_newfstat fs/stat.c:418 [inline]
__x64_sys_newfstat+0x137/0x210 fs/stat.c:418
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: 0033:0x7fa05d533ad7
Code: 73 01 c3 48 8b 0d 21 f3 0d 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 05 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 8b 15 f1 f2 0d 00 f7 d8 64 89 02 b8
RSP: 002b:00007fffd5d0d878 EFLAGS: 00000202 ORIG_RAX: 0000000000000005
RAX: ffffffffffffffda RBX: 000000000000000e RCX: 00007fa05d533ad7
RDX: 0000000000090800 RSI: 00007fffd5d0d880 RDI: 000000000000000e
RBP: 00007fffd5d0d880 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000202 R12: 0000556f0be4f7b0
R13: 00000000000000fe R14: 0000556ee1614be0 R15: 00007fffd5d0dbe0
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 4d 8d 65 01 lea 0x1(%r13),%r12
6: 41 c1 e5 04 shl $0x4,%r13d
a: 49 81 c5 e0 08 00 00 add $0x8e0,%r13
11: 4d 8d 74 24 ff lea -0x1(%r12),%r14
16: 44 89 f7 mov %r14d,%edi
19: c1 ef 03 shr $0x3,%edi
1c: 81 e7 f8 1f 00 00 and $0x1ff8,%edi
22: 4c 8b 7c 24 28 mov 0x28(%rsp),%r15
27: 4c 01 ff add %r15,%rdi
* 2a: be 08 00 00 00 mov $0x8,%esi <-- trapping instruction
2f: e8 00 91 1a fe call 0xfe1a9134
34: 31 f6 xor %esi,%esi
36: 4d 0f a3 37 bt %r14,(%r15)
3a: 40 0f 93 c5 setae %bpl
3e: 40 rex
3f: 0f .byte 0xf