------------[ cut here ]------------
WARNING: CPU: 1 PID: 3575 at mm/maccess.c:226 copy_from_user_nofault+0x15c/0x1c0
Modules linked in:
CPU: 1 PID: 3575 Comm: syz-executor Not tainted 5.15.168-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:copy_from_user_nofault+0x15c/0x1c0 mm/maccess.c:226
Code: db 48 c7 c0 f2 ff ff ff 48 0f 44 c5 eb 0c e8 fb c7 d5 ff 48 c7 c0 f2 ff ff ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 e4 c7 d5 ff <0f> 0b e9 1e ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c ef fe ff
RSP: 0018:ffffc90000dcfd60 EFLAGS: 00010246
RAX: ffffffff81aaab4c RBX: 0000000000000000 RCX: ffff88807ae05940
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff81aaaa5d R09: fffffbfff1bd2cbe
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000008 R14: 0000000000000000 R15: ffffc90000dcfdc8
FS: 000055555ec67500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffdac236b5c CR3: 0000000065053000 CR4: 00000000003506e0
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_user kernel/trace/bpf_trace.c:166 [inline]
bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163
bpf_prog_02073d59a3c0f06f+0x3d/0xb44
bpf_dispatcher_nop_func include/linux/bpf.h:790 [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:1880 [inline]
bpf_trace_run4+0x1ea/0x390 kernel/trace/bpf_trace.c:1919
trace_fib_table_lookup+0x193/0x200 include/trace/events/fib.h:13
fib_table_lookup+0x125b/0x17b0
fib_lookup+0x19b/0x410 include/net/ip_fib.h:381
ip_route_input_slow net/ipv4/route.c:2308 [inline]
ip_route_input_rcu+0x1f00/0x3c90 net/ipv4/route.c:2504
ip_route_input_noref+0x14b/0x230 net/ipv4/route.c:2449
ip_rcv_finish_core+0x57b/0x1b40 net/ipv4/ip_input.c:363
ip_list_rcv_finish net/ipv4/ip_input.c:610 [inline]
ip_sublist_rcv+0x3b2/0xe50 net/ipv4/ip_input.c:636
ip_list_rcv+0x422/0x470 net/ipv4/ip_input.c:671
__netif_receive_skb_list_ptype net/core/dev.c:5532 [inline]
__netif_receive_skb_list_core+0x6b1/0x890 net/core/dev.c:5580
__netif_receive_skb_list net/core/dev.c:5632 [inline]
netif_receive_skb_list_internal+0x9ed/0xdf0 net/core/dev.c:5723
gro_normal_list net/core/dev.c:5877 [inline]
napi_complete_done+0x352/0x820 net/core/dev.c:6615
virtqueue_napi_complete drivers/net/virtio_net.c:357 [inline]
virtnet_poll+0xbd1/0x1260 drivers/net/virtio_net.c:1592
__napi_poll+0xc7/0x440 net/core/dev.c:7039
napi_poll net/core/dev.c:7106 [inline]
net_rx_action+0x617/0xda0 net/core/dev.c:7196
handle_softirqs+0x3a7/0x930 kernel/softirq.c:558
__do_softirq kernel/softirq.c:592 [inline]
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x157/0x240 kernel/softirq.c:641
irq_exit_rcu+0x5/0x20 kernel/softirq.c:653
common_interrupt+0xb3/0xd0 arch/x86/kernel/irq.c:240
asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:667
RIP: 0010:preempt_count_sub+0x3/0x160 kernel/sched/core.c:5509
Code: c1 88 99 e9 8d 80 e1 07 80 c1 03 38 c1 7c 80 48 c7 c7 88 99 e9 8d e8 4c c0 72 00 e9 6f ff ff ff 0f 1f 80 00 00 00 00 41 56 53 <89> fb 48 c7 c0 c0 9f 86 96 48 c1 e8 03 49 be 00 00 00 00 00 fc ff
RSP: 0018:ffffc90002e27350 EFLAGS: 00000206
RAX: ffffc90002e28000 RBX: ffffc90002e27430 RCX: ffffc90002e277e8
RDX: dffffc0000000000 RSI: ffffc90002e277d0 RDI: 0000000000000001
RBP: ffffc90002e277e0 R08: ffffc90002e277d0 R09: ffffc90002e27470
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffffffff1cd51e1
R13: 1ffffffff1cd51e1 R14: ffffc90002e20000 R15: ffffc90002e27420
unwind_next_frame+0x1437/0x1fa0 arch/x86/kernel/unwind_orc.c:616
arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
__kasan_slab_alloc+0x8e/0xc0 mm/kasan/common.c:467
kasan_slab_alloc include/linux/kasan.h:254 [inline]
slab_post_alloc_hook+0x53/0x380 mm/slab.h:519
slab_alloc_node mm/slub.c:3220 [inline]
slab_alloc mm/slub.c:3228 [inline]
kmem_cache_alloc+0xf3/0x280 mm/slub.c:3233
kmem_cache_zalloc include/linux/slab.h:711 [inline]
lsm_file_alloc security/security.c:574 [inline]
security_file_alloc+0x24/0x120 security/security.c:1530
__alloc_file+0xc3/0x240 fs/file_table.c:106
alloc_empty_file+0x92/0x180 fs/file_table.c:150
path_openat+0xfc/0x2f20 fs/namei.c:3728
do_filp_open+0x21c/0x460 fs/namei.c:3769
do_sys_openat2+0x13b/0x4f0 fs/open.c:1253
do_sys_open fs/open.c:1269 [inline]
__do_sys_openat fs/open.c:1285 [inline]
__se_sys_openat fs/open.c:1280 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1280
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f68480bf8f1
Code: 44 24 18 31 c0 41 83 e2 40 75 3e 89 f0 25 00 00 41 00 3d 00 00 41 00 74 30 89 f2 b8 01 01 00 00 48 89 fe bf 9c ff ff ff 0f 05 <48> 3d 00 f0 ff ff 77 3f 48 8b 54 24 18 64 48 2b 14 25 28 00 00 00
RSP: 002b:00007ffdac236ae0 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f6848132134 RCX: 00007f68480bf8f1
RDX: 0000000000090800 RSI: 00007ffdac237c80 RDI: 00000000ffffff9c
RBP: 00007ffdac237c6c R08: 0000000000000000 R09: 0000000000000010
R10: 0000000000000000 R11: 0000000000000287 R12: 00007ffdac237c80
R13: 00007f6848132134 R14: 0000000000014af6 R15: 00007ffdac237cc0
----------------
Code disassembly (best guess), 2 bytes skipped:
0: 99 cltd
1: e9 8d 80 e1 07 jmp 0x7e18093
6: 80 c1 03 add $0x3,%cl
9: 38 c1 cmp %al,%cl
b: 7c 80 jl 0xffffff8d
d: 48 c7 c7 88 99 e9 8d mov $0xffffffff8de99988,%rdi
14: e8 4c c0 72 00 call 0x72c065
19: e9 6f ff ff ff jmp 0xffffff8d
1e: 0f 1f 80 00 00 00 00 nopl 0x0(%rax)
25: 41 56 push %r14
27: 53 push %rbx
* 28: 89 fb mov %edi,%ebx <-- trapping instruction
2a: 48 c7 c0 c0 9f 86 96 mov $0xffffffff96869fc0,%rax
31: 48 c1 e8 03 shr $0x3,%rax
35: 49 rex.WB
36: be 00 00 00 00 mov $0x0,%esi
3b: 00 fc add %bh,%ah
3d: ff .byte 0xff