------------[ cut here ]------------
WARNING: CPU: 0 PID: 4393 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 4393 Comm: syz.4.27 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 8d f6 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 10 f3 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:ffffc900000072b8 EFLAGS: 00010046
RAX: ffffffff819ed900 RBX: 0000000000000000 RCX: ffff88801af85940
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed10035f0b29
R10: ffffed10035f0b29 R11: 1ffff110035f0b28 R12: ffff88801af870c8
R13: 00007ffffffff000 R14: ffffc90000007328 R15: 0000000020000000
FS: 00007f8e570646c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f18d8a1fd58 CR3: 0000000022e5c000 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_24fd3d61f59b453e+0x3a/0xb8
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_run1+0x153/0x2d0 kernel/trace/bpf_trace.c:1914
trace_workqueue_activate_work+0x13e/0x1a0 include/trace/events/workqueue.h:59
__queue_work+0x8ec/0xd50 kernel/workqueue.c:1521
queue_work_on+0x11d/0x1d0 kernel/workqueue.c:1559
__ieee80211_queue_skb_to_iface net/mac80211/rx.c:222 [inline]
ieee80211_queue_skb_to_iface net/mac80211/rx.c:232 [inline]
ieee80211_rx_h_mgmt+0x406/0x5b0 net/mac80211/rx.c:3795
ieee80211_rx_handlers+0x6727/0x8470 net/mac80211/rx.c:3959
ieee80211_invoke_rx_handlers net/mac80211/rx.c:3989 [inline]
ieee80211_prepare_and_rx_handle+0x1d8e/0x5250 net/mac80211/rx.c:4703
__ieee80211_rx_handle_packet net/mac80211/rx.c:4863 [inline]
ieee80211_rx_list+0x1ba1/0x2680 net/mac80211/rx.c:4986
ieee80211_rx_napi+0x15d/0x360 net/mac80211/rx.c:5009
ieee80211_rx include/net/mac80211.h:4573 [inline]
ieee80211_handle_queued_frames+0x105/0x1b0 net/mac80211/main.c:237
tasklet_action_common+0x298/0x400 kernel/softirq.c:806
handle_softirqs+0x328/0x820 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x12f/0x220 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:lock_release+0x584/0x870 kernel/locking/lockdep.c:5647
Code: 00 00 00 00 9c 8f 84 24 80 00 00 00 f6 84 24 81 00 00 00 02 75 75 f7 44 24 50 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 04 2f 00 00 00 00 66 43 c7 44 2f 09 00 00 43 c6 44 2f 0b 00
RSP: 0018:ffffc900034df940 EFLAGS: 00000206
RAX: 0000000000000001 RBX: ffffffffffffffff RCX: dafe386b66a11e00
RDX: 0000000000000000 RSI: ffffffff8a0b2f00 RDI: ffffffff8a59e580
RBP: ffffc900034dfa58 R08: dffffc0000000000 R09: fffffbfff1ad33a6
R10: fffffbfff1ad33a6 R11: 1ffffffff1ad33a5 R12: ffff88801af86430
R13: dffffc0000000000 R14: ffff88801af86420 R15: 1ffff9200069bf34
_copy_from_user+0x29/0x170 lib/usercopy.c:14
copy_from_user include/linux/uaccess.h:192 [inline]
__copy_msghdr_from_user net/socket.c:2328 [inline]
copy_msghdr_from_user net/socket.c:2379 [inline]
recvmsg_copy_msghdr net/socket.c:2631 [inline]
___sys_recvmsg+0x129/0x4f0 net/socket.c:2703
do_recvmmsg+0x344/0x7a0 net/socket.c:2801
__sys_recvmmsg net/socket.c:2880 [inline]
__do_sys_recvmmsg net/socket.c:2903 [inline]
__se_sys_recvmmsg net/socket.c:2896 [inline]
__x64_sys_recvmmsg+0x18d/0x240 net/socket.c:2896
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: 0033:0x7f8e58e1e749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8e57064038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f8e59075090 RCX: 00007f8e58e1e749
RDX: 000000000400034f RSI: 0000200000000480 RDI: 0000000000000005
RBP: 00007f8e58ea2f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8e59075128 R14: 00007f8e59075090 R15: 00007ffcec1f78e8
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 00 00 add %al,(%rax)
4: 9c pushf
5: 8f 84 24 80 00 00 00 pop 0x80(%rsp)
c: f6 84 24 81 00 00 00 testb $0x2,0x81(%rsp)
13: 02
14: 75 75 jne 0x8b
16: f7 44 24 50 00 02 00 testl $0x200,0x50(%rsp)
1d: 00
1e: 74 01 je 0x21
20: fb sti
21: 48 c7 44 24 60 0e 36 movq $0x45e0360e,0x60(%rsp)
28: e0 45
* 2a: 4b c7 04 2f 00 00 00 movq $0x0,(%r15,%r13,1) <-- trapping instruction
31: 00
32: 66 43 c7 44 2f 09 00 movw $0x0,0x9(%r15,%r13,1)
39: 00
3a: 43 c6 44 2f 0b 00 movb $0x0,0xb(%r15,%r13,1)