buffer_io_error: 6 callbacks suppressed
Buffer I/O error on dev sr0, logical block 0, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
------------[ cut here ]------------
WARNING: kernel/printk/printk_ringbuffer.c:1278 at get_data+0x364/0x400, CPU#1: syz-executor.4/13936
Modules linked in:
CPU: 1 UID: 0 PID: 13936 Comm: syz-executor.4 Not tainted 6.18.0-rc4-next-20251103 #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 c7 ed 5b 00 e9 a9 fe ff ff e8 cd f1 1e 00 90 <0f> 0b 90 45 31 e4 e9 3b ff ff ff e8 bc f1 1e 00 90 0f 0b 90 45 31
RSP: 0018:ffff88801b98e760 EFLAGS: 00010216
RAX: 00000000000047bf RBX: ffff88801b98e878 RCX: ffffc9000b45f000
RDX: 0000000000040000 RSI: ffffffff81558d53 RDI: 0000000000000006
RBP: ffff88801b98e840 R08: 0000000000000fb2 R09: 0000021771f96751
R10: 0000000000000000 R11: 000036706200004c R12: ffffffff85d2e130
R13: 00003fffffffffff R14: 0000000000000000 R15: 0000000000000000
FS: 00007f8b3d1cb700(0000) GS:ffff8880e54a8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555561c96708 CR3: 0000000048784000 CR4: 0000000000350ef0
Call Trace:
_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
blk_update_request+0xb86/0x1060
blk_mq_end_request+0x4f/0x90
blk_mq_dispatch_rq_list+0x3ea/0x1a90
__blk_mq_sched_dispatch_requests+0xc31/0x13d0
blk_mq_sched_dispatch_requests+0xd7/0x1b0
blk_mq_run_hw_queue+0x3bd/0x640
blk_mq_dispatch_list+0x4c1/0x12c0
blk_mq_flush_plug_list+0x12a/0x5b0
__blk_flush_plug+0x25c/0x460
__submit_bio+0x480/0x5b0
submit_bio_noacct_nocheck+0x552/0xb60
submit_bio_noacct+0x35b/0x1350
block_read_full_folio+0x405/0x760
filemap_read_folio+0x4a/0x1e0
filemap_get_pages+0x1132/0x18e0
filemap_read+0x388/0xcf0
blkdev_read_iter+0x1a3/0x510
do_iter_readv_writev+0x691/0x910
vfs_readv+0x42b/0x7f0
do_preadv+0x1ab/0x280
__x64_sys_preadv2+0xef/0x160
do_syscall_64+0xbf/0x3f0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8b3fc55b19
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8b3d1cb188 EFLAGS: 00000246 ORIG_RAX: 0000000000000147
RAX: ffffffffffffffda RBX: 00007f8b3fd68f60 RCX: 00007f8b3fc55b19
RDX: 0000000000000008 RSI: 0000000020000540 RDI: 0000000000000003
RBP: 00007f8b3fcaff6d R08: 0000000000000008 R09: 0000000000000003
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcb917de9f R14: 00007f8b3d1cb300 R15: 0000000000022000
irq event stamp: 1397
hardirqs last enabled at (1403): [] vprintk_emit+0x650/0x690
hardirqs last disabled at (1408): [] vprintk_emit+0x5e1/0x690
softirqs last enabled at (630): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (587): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
Buffer I/O error on dev sr0, logical block 1, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 2, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 3 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 3, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 4 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 4, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 5 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 5, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 6 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 6, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 7 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 7, async page read
syz-executor.4 (13936) used greatest stack depth: 22304 bytes left
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 1 UID: 0 PID: 14002 Comm: syz-executor.6 Tainted: G W 6.18.0-rc4-next-20251103 #1 PREEMPT(voluntary)
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
dump_stack_lvl+0xfa/0x120
should_fail_ex+0x4d7/0x5e0
_copy_from_iter+0x1dc/0x1660
copy_page_from_iter+0xe3/0x180
tun_build_skb+0x2e2/0x1280
tun_get_user+0x1536/0x39e0
tun_chr_write_iter+0xd9/0x1e0
vfs_write+0xbe9/0x1150
ksys_write+0x121/0x240
do_syscall_64+0xbf/0x3f0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7e784e65ff
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 99 fd ff ff 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 cc fd ff ff 48
RSP: 002b:00007f7e75aa9150 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f7e78646f60 RCX: 00007f7e784e65ff
RDX: 0000000000000046 RSI: 0000000020000180 RDI: 00000000000000f0
RBP: 00007f7e75aa91d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000001
R13: 00007ffccbe73d1f R14: 00007f7e75aa9300 R15: 0000000000022000
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 0, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 1 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 1, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 2, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 3 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 3, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 4 op 0x0:(READ) flags 0x0 phys_seg 2 prio class 2
Buffer I/O error on dev sr0, logical block 4, async page read
Buffer I/O error on dev sr0, logical block 5, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 6 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 6, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 7 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 7, async page read