critical target error, dev sr0, sector 1923072 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2
critical target error, dev sr0, sector 1923328 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2
critical target error, dev sr0, sector 1923584 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2
INFO: task syz-executor.3:8634 blocked for more than 143 seconds.
      Not tainted 6.17.0-rc5-next-20250912 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3  state:D stack:27304 pid:8634  tgid:8633  ppid:6350   task_flags:0x400040 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0xe7e/0x3590
 schedule+0xdb/0x390
 schedule_preempt_disabled+0x10/0x20
 rwsem_down_write_slowpath+0x3c1/0x1330
 down_write+0x1c2/0x1f0
 blkdev_fallocate+0x248/0x450
 vfs_fallocate+0x3fb/0xd60
 __x64_sys_fallocate+0xd6/0x150
 do_syscall_64+0xbf/0x390
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa3e7172b19
RSP: 002b:00007fa3e46e8188 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007fa3e7285f60 RCX: 00007fa3e7172b19
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000003
RBP: 00007fa3e71ccf6d R08: 0000000000000000 R09: 0000000000000000
R10: 1000000000000105 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc070267df R14: 00007fa3e46e8300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.3:8634 <writer> blocked on an rw-semaphore likely owned by task syz-executor.4:8616 <writer>
task:syz-executor.4  state:D stack:26704 pid:8616  tgid:8614  ppid:289    task_flags:0x400040 flags:0x00004006
Call Trace:
 <TASK>
 __schedule+0xe7e/0x3590
 schedule+0xdb/0x390
 io_schedule+0xbf/0x130
 blk_mq_get_tag+0x568/0xaa0
 __blk_mq_alloc_requests+0x6ed/0x15a0
 blk_mq_submit_bio+0x17c3/0x2430
 __submit_bio+0x17f/0x5b0
 submit_bio_noacct_nocheck+0x552/0xb60
 submit_bio_noacct+0x35b/0x1350
 bio_chain_and_submit+0x2f/0x40
 __blkdev_issue_zero_pages+0x2ee/0x630
 blkdev_issue_zeroout+0x541/0x800
 blkdev_fallocate+0x387/0x450
 vfs_fallocate+0x3fb/0xd60
 __x64_sys_fallocate+0xd6/0x150
 do_syscall_64+0xbf/0x390
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5fce5e8b19
RSP: 002b:00007f5fcbb5e188 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007f5fce6fbf60 RCX: 00007f5fce5e8b19
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000003
RBP: 00007f5fce642f6d R08: 0000000000000000 R09: 0000000000000000
R10: 1000000000000105 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd33eb86ef R14: 00007f5fcbb5e300 R15: 0000000000022000
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/32:
 #0: ffffffff85c1ce60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x36/0x1c0
2 locks held by in:imklog/176:
2 locks held by syz-executor.4/8616:
 #0: ffff888009057818 (&sb->s_type->i_mutex_key#6){++++}-{4:4}, at: blkdev_fallocate+0x248/0x450
 #1: ffff8880090579b8 (mapping.invalidate_lock){++++}-{4:4}, at: blkdev_fallocate+0x279/0x450
1 lock held by syz-executor.3/8634:
 #0: ffff888009057818 (&sb->s_type->i_mutex_key#6){++++}-{4:4}, at: blkdev_fallocate+0x248/0x450

=============================================

scsi_io_completion_action: 258 callbacks suppressed
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code
sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 07 96 c0 00 00 40 00
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code
sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 07 97 00 00 00 40 00
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code
sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 07 97 40 00 00 40 00
blk_print_req_error: 258 callbacks suppressed
critical target error, dev sr0, sector 1989888 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code
sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 07 97 80 00 00 40 00
critical target error, dev sr0, sector 1990144 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code
sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 07 97 c0 00 00 40 00
critical target error, dev sr0, sector 1990400 op 0x1:(WRITE) flags 0x0 phys_seg 32 prio class 2
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code
sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 07 98 00 00 00 40 00
critical target error, dev sr0, sector 1990656 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code
sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 07 98 40 00 00 40 00
critical target error, dev sr0, sector 1990912 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code
sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 07 98 80 00 00 40 00
critical target error, dev sr0, sector 1991168 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code
sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 07 98 c0 00 00 40 00
critical target error, dev sr0, sector 1991424 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code
sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 07 99 00 00 00 40 00
critical target error, dev sr0, sector 1991680 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2
critical target error, dev sr0, sector 1991936 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2
critical target error, dev sr0, sector 1992192 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2
scsi_io_completion_action: 238 callbacks suppressed
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code
sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 07 d4 c0 00 00 40 00
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code
sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 07 d5 00 00 00 40 00
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code
sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 07 d5 40 00 00 40 00
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code
sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 07 d5 80 00 00 40 00
blk_print_req_error: 239 callbacks suppressed
critical target error, dev sr0, sector 2053632 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code
sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 07 d5 c0 00 00 40 00
critical target error, dev sr0, sector 2053888 op 0x1:(WRITE) flags 0x0 phys_seg 32 prio class 2
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code
sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 07 d6 00 00 00 40 00
critical target error, dev sr0, sector 2054144 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code
sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 07 d6 40 00 00 40 00
critical target error, dev sr0, sector 2054400 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code
sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 07 d6 80 00 00 40 00
critical target error, dev sr0, sector 2054656 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code
sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 07 d6 c0 00 00 40 00
critical target error, dev sr0, sector 2054912 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code
sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 07 d7 00 00 00 40 00
critical target error, dev sr0, sector 2055168 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2
critical target error, dev sr0, sector 2055424 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2
critical target error, dev sr0, sector 2055680 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2
critical target error, dev sr0, sector 2055936 op 0x1:(WRITE) flags 0x0 phys_seg 32 prio class 2