netlink: 8 bytes leftover after parsing attributes in process `syz-executor.1'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.1'.
loop4: detected capacity change from 0 to 4
------------[ cut here ]------------
WARNING: kernel/printk/printk_ringbuffer.c:1278 at get_data+0x364/0x400, CPU#1: syz-executor.4/19623
Modules linked in:
CPU: 1 UID: 0 PID: 19623 Comm: syz-executor.4 Not tainted 6.18.0-rc4-next-20251106 #1 PREEMPT(voluntary) 
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:get_data+0x364/0x400
Code: e8 83 e0 07 83 c0 03 38 d0 0f 8c be fe ff ff 84 d2 0f 84 b6 fe ff ff 48 89 ef e8 e7 4c 5c 00 e9 a9 fe ff ff e8 6d 1c 1f 00 90 <0f> 0b 90 45 31 e4 e9 3b ff ff ff e8 5c 1c 1f 00 90 0f 0b 90 45 31
RSP: 0018:ffff88804ddcf238 EFLAGS: 00010216
RAX: 0000000000001a89 RBX: ffff88804ddcf350 RCX: ffffc900082cb000
RDX: 0000000000040000 RSI: ffffffff8155b1b3 RDI: 0000000000000006
RBP: ffff88804ddcf318 R08: 00000000000010ef R09: 000000ce23c9156f
R10: 0000000000000000 R11: 00004ca762000048 R12: ffffffff85d2e610
R13: 00003fffffffffff R14: 0000000000000000 R15: 0000000000000000
FS:  00007fba4ac83700(0000) GS:ffff8880e549c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fba4ac84000 CR3: 000000004de4a000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 _prb_read_valid+0x2f3/0x830
 prb_read_valid+0x78/0xa0
 printk_get_next_message+0x10b/0x570
 console_flush_one_record+0x64f/0xb20
 __console_flush_and_unlock+0xb1/0x1d0
 vprintk_emit+0x4c1/0x690
 _printk+0xbe/0xf0
 __ext4_msg+0x17e/0x240
 ext4_fill_super+0x5341/0xb910
 get_tree_bdev_flags+0x38a/0x620
 vfs_get_tree+0x93/0x340
 path_mount+0x726/0x2140
 __x64_sys_mount+0x293/0x310
 do_syscall_64+0xbf/0x430
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fba4d70f04a
Code: 48 c7 c2 bc ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fba4ac82fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007fba4d70f04a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fba4ac83000
RBP: 00007fba4ac83040 R08: 00007fba4ac83040 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000
R13: 0000000020000100 R14: 00007fba4ac83000 R15: 00000000200000c0
 </TASK>
irq event stamp: 2129
hardirqs last  enabled at (2135): [<ffffffff81553a90>] vprintk_emit+0x650/0x690
hardirqs last disabled at (2140): [<ffffffff81553a21>] vprintk_emit+0x5e1/0x690
softirqs last  enabled at (2094): [<ffffffff813bc48c>] handle_softirqs+0x50c/0x770
softirqs last disabled at (2073): [<ffffffff813bc824>] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---