general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 PID: 21151 Comm: syz.6.9093 Not tainted 5.15.176-syzkaller-00972-g829d9f138569 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:dev_map_enqueue+0x31/0x220 kernel/bpf/devmap.c:531
Code: 56 41 55 41 54 53 48 83 ec 18 49 89 d7 48 89 75 d0 48 89 fb 49 bc 00 00 00 00 00 fc ff df e8 46 23 e1 ff 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 40 88 23 00 4c 8b 33 48 83 c3 20
RSP: 0018:ffffc9000327f760 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc90004f89000 RSI: 0000000000000069 RDI: 000000000000006a
RBP: ffffc9000327f7a0 R08: ffffffff83f14a51 R09: ffffffff83f1497a
R10: 0000000000000004 R11: ffff88810b6a93c0 R12: dffffc0000000000
R13: ffff888127d20000 R14: ffff8881f7036c80 R15: ffff888127d20000
FS: 00007f6061e3a6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3101cff8 CR3: 000000010f182000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
__xdp_do_redirect_frame net/core/filter.c:4089 [inline]
xdp_do_redirect+0x5d1/0xc30 net/core/filter.c:4129
tun_xdp_act+0xe2/0x770 drivers/net/tun.c:1611
tun_build_skb drivers/net/tun.c:1695 [inline]
tun_get_user+0xaf4/0x3aa0 drivers/net/tun.c:1797
tun_chr_write_iter+0x1e1/0x2e0 drivers/net/tun.c:2019
call_write_iter include/linux/fs.h:2206 [inline]
new_sync_write fs/read_write.c:507 [inline]
vfs_write+0xd5d/0x1110 fs/read_write.c:594
ksys_write+0x199/0x2c0 fs/read_write.c:647
__do_sys_write fs/read_write.c:659 [inline]
__se_sys_write fs/read_write.c:656 [inline]
__x64_sys_write+0x7b/0x90 fs/read_write.c:656
x64_sys_call+0x2f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:2
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: 0033:0x7f60637ce7df
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007f6061e3a000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f60639e8fa0 RCX: 00007f60637ce7df
RDX: 000000000000003e RSI: 0000000020000400 RDI: 00000000000000c8
RBP: 00007f60638512a0 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000003e R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f60639e8fa0 R15: 00007fff9bab7438
</TASK>
Modules linked in:
---[ end trace cc18014833e0dbc0 ]---
RIP: 0010:dev_map_enqueue+0x31/0x220 kernel/bpf/devmap.c:531
Code: 56 41 55 41 54 53 48 83 ec 18 49 89 d7 48 89 75 d0 48 89 fb 49 bc 00 00 00 00 00 fc ff df e8 46 23 e1 ff 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 40 88 23 00 4c 8b 33 48 83 c3 20
RSP: 0018:ffffc9000327f760 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc90004f89000 RSI: 0000000000000069 RDI: 000000000000006a
RBP: ffffc9000327f7a0 R08: ffffffff83f14a51 R09: ffffffff83f1497a
R10: 0000000000000004 R11: ffff88810b6a93c0 R12: dffffc0000000000
R13: ffff888127d20000 R14: ffff8881f7036c80 R15: ffff888127d20000
FS: 00007f6061e3a6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3101cff8 CR3: 000000010f182000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 56 push %rsi
1: 41 55 push %r13
3: 41 54 push %r12
5: 53 push %rbx
6: 48 83 ec 18 sub $0x18,%rsp
a: 49 89 d7 mov %rdx,%r15
d: 48 89 75 d0 mov %rsi,-0x30(%rbp)
11: 48 89 fb mov %rdi,%rbx
14: 49 bc 00 00 00 00 00 movabs $0xdffffc0000000000,%r12
1b: fc ff df
1e: e8 46 23 e1 ff call 0xffe12369
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 48 89 df mov %rbx,%rdi
34: e8 40 88 23 00 call 0x238879
39: 4c 8b 33 mov (%rbx),%r14
3c: 48 83 c3 20 add $0x20,%rbx