null_blk: nullb1: using native zone append
BUG: sleeping function called from invalid context at kernel/locking/mutex.c:623
in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 21154, name: syz.8.3550
preempt_count: 0, expected: 0
RCU nest depth: 1, expected: 0
locks held by syz.8.3550/21154: 7, last CPU#2:
 #0: ffff88801463eef0 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x2aa/0x380 fs/file.c:1259
 #1: ffff88802255c460 (sb_writers#13){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:739
 #2: ffff888078f43680 (&buffer->mutex){+.+.}-{4:4}, at: configfs_write_iter+0x76/0x4e0 fs/configfs/file.c:226
 #3: ffff88802aa60c70 (&p->frag_sem){.+.+}-{4:4}, at: flush_write_buffer fs/configfs/file.c:205 [inline]
 #3: ffff88802aa60c70 (&p->frag_sem){.+.+}-{4:4}, at: configfs_write_iter+0x218/0x4e0 fs/configfs/file.c:229
 #4: ffffffff9bbf54a0 (&lock){+.+.}-{4:4}, at: nullb_device_power_store+0xde/0x350 drivers/block/null_blk/main.c:496
 #5: ffff888021493350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0x41a/0xe40 block/bdev.c:991
 #6: ffffffff8ede9240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #6: ffffffff8ede9240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
 #6: ffffffff8ede9240 (rcu_read_lock){....}-{1:3}, at: blk_mq_submit_bio+0x21b2/0x3000 block/blk-mq.c:3208
CPU: 2 UID: 0 PID: 21154 Comm: syz.8.3550 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 __might_resched.cold+0x1dc/0x222 kernel/sched/core.c:9202
 __mutex_lock_common kernel/locking/mutex.c:623 [inline]
 __mutex_lock+0x10e/0x1bc0 kernel/locking/mutex.c:821
 null_lock_zone drivers/block/null_blk/zoned.c:39 [inline]
 null_lock_zone drivers/block/null_blk/zoned.c:33 [inline]
 null_process_zoned_cmd+0x943/0x10a0 drivers/block/null_blk/zoned.c:732
 null_handle_cmd drivers/block/null_blk/main.c:1455 [inline]
 null_queue_rq+0x664/0xfb0 drivers/block/null_blk/main.c:1703
 __blk_mq_issue_directly+0xe2/0x200 block/blk-mq.c:2694
 blk_mq_try_issue_directly+0x21b/0x420 block/blk-mq.c:2754
 blk_mq_submit_bio+0x21ec/0x3000 block/blk-mq.c:3208
 __submit_bio+0x90/0x3d0 block/blk-core.c:673
 __submit_bio_noacct_mq block/blk-core.c:756 [inline]
 submit_bio_noacct_nocheck+0x549/0xc00 block/blk-core.c:790
 submit_bio_noacct+0xd18/0x1ff0 block/blk-core.c:921
 blk_crypto_submit_bio include/linux/blk-crypto.h:212 [inline]
 __bh_submit+0x721/0x950 fs/buffer.c:1129
 bh_submit fs/buffer.c:1143 [inline]
 block_read_full_folio+0x496/0x8c0 fs/buffer.c:2367
 filemap_read_folio+0xfc/0x3b0 mm/filemap.c:2516
 do_read_cache_folio+0x2d7/0x6b0 mm/filemap.c:4146
 read_mapping_folio include/linux/pagemap.h:1015 [inline]
 read_part_sector+0xd1/0x370 block/partitions/core.c:724
 adfspart_check_ICS+0x91/0x7d0 block/partitions/acorn.c:357
 check_partition block/partitions/core.c:143 [inline]
 blk_add_partitions block/partitions/core.c:591 [inline]
 bdev_disk_changed+0x7b1/0x1260 block/partitions/core.c:695
 blkdev_get_whole+0x187/0x290 block/bdev.c:794
 bdev_open+0x2c7/0xe40 block/bdev.c:1003
 bdev_file_open_by_dev block/bdev.c:1105 [inline]
 bdev_file_open_by_dev+0x179/0x210 block/bdev.c:1080
 disk_scan_partitions+0x1ef/0x320 block/genhd.c:387
 add_disk_final block/genhd.c:412 [inline]
 add_disk_fwnode+0x3f4/0x480 block/genhd.c:606
 add_disk include/linux/blkdev.h:798 [inline]
 null_add_dev+0x129d/0x1df0 drivers/block/null_blk/main.c:2052
 nullb_device_power_store+0x29d/0x350 drivers/block/null_blk/main.c:501
 flush_write_buffer fs/configfs/file.c:207 [inline]
 configfs_write_iter+0x302/0x4e0 fs/configfs/file.c:229
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x6af/0x1050 fs/read_write.c:687
 ksys_write+0x12a/0x250 fs/read_write.c:739
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:79 [inline]
 __do_fast_syscall_32+0x13a/0x8b0 arch/x86/entry/syscall_32.c:291
 do_fast_syscall_32+0x32/0x70 arch/x86/entry/syscall_32.c:316
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf707efec
Code: Unable to access opcode bytes at 0xf707efc2.
RSP: 002b:00000000f546d50c EFLAGS: 00000292 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00000000800002c0
RDX: 0000000000000002 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>

=============================
[ BUG: Invalid wait context ]
syzkaller #0 Tainted: G        W    L     
-----------------------------
syz.8.3550/21154 is trying to lock:
ffffc90037a00060 (&zone->mutex){+.+.}-{4:4}, at: null_lock_zone drivers/block/null_blk/zoned.c:39 [inline]
ffffc90037a00060 (&zone->mutex){+.+.}-{4:4}, at: null_lock_zone drivers/block/null_blk/zoned.c:33 [inline]
ffffc90037a00060 (&zone->mutex){+.+.}-{4:4}, at: null_process_zoned_cmd+0x943/0x10a0 drivers/block/null_blk/zoned.c:732
other info that might help us debug this:
context-{5:5}
locks held by syz.8.3550/21154: 7, last CPU#2:
 #0: ffff88801463eef0 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x2aa/0x380 fs/file.c:1259
 #1: ffff88802255c460 (sb_writers#13){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:739
 #2: ffff888078f43680 (&buffer->mutex){+.+.}-{4:4}, at: configfs_write_iter+0x76/0x4e0 fs/configfs/file.c:226
 #3: ffff88802aa60c70 (&p->frag_sem){.+.+}-{4:4}, at: flush_write_buffer fs/configfs/file.c:205 [inline]
 #3: ffff88802aa60c70 (&p->frag_sem){.+.+}-{4:4}, at: configfs_write_iter+0x218/0x4e0 fs/configfs/file.c:229
 #4: ffffffff9bbf54a0 (&lock){+.+.}-{4:4}, at: nullb_device_power_store+0xde/0x350 drivers/block/null_blk/main.c:496
 #5: ffff888021493350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0x41a/0xe40 block/bdev.c:991
 #6: ffffffff8ede9240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #6: ffffffff8ede9240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
 #6: ffffffff8ede9240 (rcu_read_lock){....}-{1:3}, at: blk_mq_submit_bio+0x21b2/0x3000 block/blk-mq.c:3208
stack backtrace:
CPU: 2 UID: 0 PID: 21154 Comm: syz.8.3550 Tainted: G        W    L      syzkaller #0 PREEMPT(full) 
Tainted: [W]=WARN, [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 print_lock_invalid_wait_context kernel/locking/lockdep.c:4846 [inline]
 check_wait_context kernel/locking/lockdep.c:4918 [inline]
 __lock_acquire+0x104c/0x1ec0 kernel/locking/lockdep.c:5203
 lock_acquire kernel/locking/lockdep.c:5886 [inline]
 lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5843
 __mutex_lock_common kernel/locking/mutex.c:646 [inline]
 __mutex_lock+0x1a4/0x1bc0 kernel/locking/mutex.c:821
 null_lock_zone drivers/block/null_blk/zoned.c:39 [inline]
 null_lock_zone drivers/block/null_blk/zoned.c:33 [inline]
 null_process_zoned_cmd+0x943/0x10a0 drivers/block/null_blk/zoned.c:732
 null_handle_cmd drivers/block/null_blk/main.c:1455 [inline]
 null_queue_rq+0x664/0xfb0 drivers/block/null_blk/main.c:1703
 __blk_mq_issue_directly+0xe2/0x200 block/blk-mq.c:2694
 blk_mq_try_issue_directly+0x21b/0x420 block/blk-mq.c:2754
 blk_mq_submit_bio+0x21ec/0x3000 block/blk-mq.c:3208
 __submit_bio+0x90/0x3d0 block/blk-core.c:673
 __submit_bio_noacct_mq block/blk-core.c:756 [inline]
 submit_bio_noacct_nocheck+0x549/0xc00 block/blk-core.c:790
 submit_bio_noacct+0xd18/0x1ff0 block/blk-core.c:921
 blk_crypto_submit_bio include/linux/blk-crypto.h:212 [inline]
 __bh_submit+0x721/0x950 fs/buffer.c:1129
 bh_submit fs/buffer.c:1143 [inline]
 block_read_full_folio+0x496/0x8c0 fs/buffer.c:2367
 filemap_read_folio+0xfc/0x3b0 mm/filemap.c:2516
 do_read_cache_folio+0x2d7/0x6b0 mm/filemap.c:4146
 read_mapping_folio include/linux/pagemap.h:1015 [inline]
 read_part_sector+0xd1/0x370 block/partitions/core.c:724
 adfspart_check_ICS+0x91/0x7d0 block/partitions/acorn.c:357
 check_partition block/partitions/core.c:143 [inline]
 blk_add_partitions block/partitions/core.c:591 [inline]
 bdev_disk_changed+0x7b1/0x1260 block/partitions/core.c:695
 blkdev_get_whole+0x187/0x290 block/bdev.c:794
 bdev_open+0x2c7/0xe40 block/bdev.c:1003
 bdev_file_open_by_dev block/bdev.c:1105 [inline]
 bdev_file_open_by_dev+0x179/0x210 block/bdev.c:1080
 disk_scan_partitions+0x1ef/0x320 block/genhd.c:387
 add_disk_final block/genhd.c:412 [inline]
 add_disk_fwnode+0x3f4/0x480 block/genhd.c:606
 add_disk include/linux/blkdev.h:798 [inline]
 null_add_dev+0x129d/0x1df0 drivers/block/null_blk/main.c:2052
 nullb_device_power_store+0x29d/0x350 drivers/block/null_blk/main.c:501
 flush_write_buffer fs/configfs/file.c:207 [inline]
 configfs_write_iter+0x302/0x4e0 fs/configfs/file.c:229
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x6af/0x1050 fs/read_write.c:687
 ksys_write+0x12a/0x250 fs/read_write.c:739
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:79 [inline]
 __do_fast_syscall_32+0x13a/0x8b0 arch/x86/entry/syscall_32.c:291
 do_fast_syscall_32+0x32/0x70 arch/x86/entry/syscall_32.c:316
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf707efec
Code: Unable to access opcode bytes at 0xf707efc2.
RSP: 002b:00000000f546d50c EFLAGS: 00000292 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00000000800002c0
RDX: 0000000000000002 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
null_blk: disk nullb1 created