------------[ cut here ]------------ WARNING: kernel/printk/printk_ringbuffer.c:1278 at get_data+0x48a/0x840 kernel/printk/printk_ringbuffer.c:1278, CPU#0: syz-executor/9804 Modules linked in: CPU: 0 UID: 0 PID: 9804 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:get_data+0x48a/0x840 kernel/printk/printk_ringbuffer.c:1278 Code: 83 c4 f8 48 b8 00 00 00 00 00 fc ff df 41 0f b6 04 07 84 c0 0f 85 ee 01 00 00 44 89 65 00 49 83 c5 08 eb 13 e8 57 d7 1e 00 90 <0f> 0b 90 eb 05 e8 4c d7 1e 00 45 31 ed 4c 89 e8 48 83 c4 28 5b 41 RSP: 0018:ffffc9000c49e8a0 EFLAGS: 00010293 RAX: ffffffff81a1faf9 RBX: 00003fffffffffff RCX: ffff88802e895ac0 RDX: 0000000000000000 RSI: 00003fffffffffff RDI: 0000000000000000 RBP: 0000000000000012 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000012 R13: 0000000000000000 R14: ffffc9000c49e9e8 R15: 1ffffffff1c4aaa6 FS: 0000555570142500(0000) GS:ffff888125aa3000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f43bc117d60 CR3: 000000007751c000 CR4: 00000000003526f0 Call Trace: copy_data kernel/printk/printk_ringbuffer.c:1857 [inline] prb_read kernel/printk/printk_ringbuffer.c:1966 [inline] _prb_read_valid+0x672/0xa90 kernel/printk/printk_ringbuffer.c:2143 prb_read_valid+0x3c/0x60 kernel/printk/printk_ringbuffer.c:2215 printk_get_next_message+0x15c/0x7b0 kernel/printk/printk.c:2978 console_emit_next_record kernel/printk/printk.c:3065 [inline] console_flush_one_record kernel/printk/printk.c:3197 [inline] console_flush_all+0x4cc/0xb10 kernel/printk/printk.c:3271 __console_flush_and_unlock kernel/printk/printk.c:3301 [inline] console_unlock+0xbb/0x190 kernel/printk/printk.c:3341 vprintk_emit+0x4c5/0x590 kernel/printk/printk.c:2423 _printk+0xcf/0x120 kernel/printk/printk.c:2448 caif_netlink_parms net/caif/chnl_net.c:424 [inline] ipcaif_newlink+0x204/0x4f0 net/caif/chnl_net.c:450 rtnl_newlink_create+0x310/0xb00 net/core/rtnetlink.c:3833 __rtnl_newlink net/core/rtnetlink.c:3950 [inline] rtnl_newlink+0x16e4/0x1c80 net/core/rtnetlink.c:4065 rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6951 netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2550 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x82f/0x9e0 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg+0x21c/0x270 net/socket.c:746 __sys_sendto+0x3bd/0x520 net/socket.c:2248 __do_sys_sendto net/socket.c:2255 [inline] __se_sys_sendto net/socket.c:2251 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2251 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f43bb390e5c Code: 2a 5f 02 00 44 8b 4c 24 2c 4c 8b 44 24 20 89 c5 44 8b 54 24 28 48 8b 54 24 18 b8 2c 00 00 00 48 8b 74 24 10 8b 7c 24 08 0f 05 <48> 3d 00 f0 ff ff 77 34 89 ef 48 89 44 24 08 e8 70 5f 02 00 48 8b RSP: 002b:00007ffd1f966100 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f43bc114620 RCX: 00007f43bb390e5c RDX: 0000000000000038 RSI: 00007f43bc114670 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffd1f966154 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 0000000000000000 R14: 00007f43bc114670 R15: 0000000000000000