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 7c c0 00 00 40 00
critical target error, dev sr0, sector 1962752 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2
INFO: task syz-executor.4:8925 blocked for more than 143 seconds.
      Not tainted 6.17.0-rc6-next-20250918 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:26928 pid:8925  tgid:8921  ppid:6395   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0xe7e/0x3580
 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: 0033:0x7fa4a9675b19
RSP: 002b:00007fa4a6beb188 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007fa4a9788f60 RCX: 00007fa4a9675b19
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000006
RBP: 00007fa4a96cff6d R08: 0000000000000000 R09: 0000000000000000
R10: 1000000000000105 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffca47e138f R14: 00007fa4a6beb300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.4:8925 <writer> blocked on an rw-semaphore likely owned by task syz-executor.3:8917 <writer>
task:syz-executor.3  state:D stack:26784 pid:8917  tgid:8916  ppid:8419   task_flags:0x400040 flags:0x00080003
Call Trace:
 <TASK>
 __schedule+0xe7e/0x3580
 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+0x540/0x800
 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: 0033:0x7fa10a5e8b19
RSP: 002b:00007fa107b5e188 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007fa10a6fbf60 RCX: 00007fa10a5e8b19
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000003
RBP: 00007fa10a642f6d R08: 0000000000000000 R09: 0000000000000000
R10: 1000000000000105 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff6e18f4ef R14: 00007fa107b5e300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.4:8933 blocked for more than 143 seconds.
      Not tainted 6.17.0-rc6-next-20250918 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:27016 pid:8933  tgid:8921  ppid:6395   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0xe7e/0x3580
 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: 0033:0x7fa4a9675b19
RSP: 002b:00007fa4a6bca188 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007fa4a9789020 RCX: 00007fa4a9675b19
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000006
RBP: 00007fa4a96cff6d R08: 0000000000000000 R09: 0000000000000000
R10: 1000000000000105 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffca47e138f R14: 00007fa4a6bca300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.4:8933 <writer> blocked on an rw-semaphore likely owned by task syz-executor.3:8917 <writer>
task:syz-executor.3  state:D stack:26784 pid:8917  tgid:8916  ppid:8419   task_flags:0x400040 flags:0x00080003
Call Trace:
 <TASK>
 __schedule+0xe7e/0x3580
 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+0x540/0x800
 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: 0033:0x7fa10a5e8b19
RSP: 002b:00007fa107b5e188 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007fa10a6fbf60 RCX: 00007fa10a5e8b19
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000003
RBP: 00007fa10a642f6d R08: 0000000000000000 R09: 0000000000000000
R10: 1000000000000105 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff6e18f4ef R14: 00007fa107b5e300 R15: 0000000000022000
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/32:
 #0: ffffffff85e1da20 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x36/0x1c0
1 lock held by in:imklog/177:
 #0: ffff888016a91978 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x2a8/0x380
2 locks held by syz-executor.3/8917:
 #0: ffff888009051e18 (&sb->s_type->i_mutex_key#6){++++}-{4:4}, at: blkdev_fallocate+0x248/0x450
 #1: ffff888009051fb8 (mapping.invalidate_lock){++++}-{4:4}, at: blkdev_fallocate+0x279/0x450
1 lock held by syz-executor.4/8925:
 #0: ffff888009051e18 (&sb->s_type->i_mutex_key#6){++++}-{4:4}, at: blkdev_fallocate+0x248/0x450
1 lock held by syz-executor.4/8933:
 #0: ffff888009051e18 (&sb->s_type->i_mutex_key#6){++++}-{4:4}, at: blkdev_fallocate+0x248/0x450

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

scsi_io_completion_action: 230 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 b6 80 00 00 40 00
blk_print_req_error: 230 callbacks suppressed
critical target error, dev sr0, sector 2021888 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 b6 c0 00 00 40 00
critical target error, dev sr0, sector 2022144 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 b7 00 00 00 40 00
critical target error, dev sr0, sector 2022400 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 b7 40 00 00 40 00
critical target error, dev sr0, sector 2022656 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 b7 80 00 00 40 00
critical target error, dev sr0, sector 2022912 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 b7 c0 00 00 40 00
critical target error, dev sr0, sector 2023168 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 b8 00 00 00 40 00
critical target error, dev sr0, sector 2023424 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 b8 40 00 00 40 00
critical target error, dev sr0, sector 2023680 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 b8 80 00 00 40 00
critical target error, dev sr0, sector 2023936 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 b8 c0 00 00 40 00
critical target error, dev sr0, sector 2024192 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2
scsi_io_completion_action: 264 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 fb 00 00 00 40 00
blk_print_req_error: 264 callbacks suppressed
critical target error, dev sr0, sector 2092032 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 fb 40 00 00 40 00
critical target error, dev sr0, sector 2092288 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 fb 80 00 00 40 00
critical target error, dev sr0, sector 2092544 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 fb c0 00 00 40 00
critical target error, dev sr0, sector 2092800 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 fc 00 00 00 40 00
critical target error, dev sr0, sector 2093056 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 fc 40 00 00 40 00
critical target error, dev sr0, sector 2093312 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 fc 80 00 00 40 00
critical target error, dev sr0, sector 2093568 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 fc c0 00 00 40 00
critical target error, dev sr0, sector 2093824 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 fd 00 00 00 40 00
critical target error, dev sr0, sector 2094080 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 fd 40 00 00 40 00
critical target error, dev sr0, sector 2094336 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2
sr 1:0:0:0: [sr0] tag#0 unaligned transfer