INFO: task jfsCommit:101 blocked for more than 144 seconds.
      Not tainted 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jfsCommit       state:D stack:0     pid:101   tgid:101   ppid:2      task_flags:0x200040 flags:0x00000010
Call trace:
 __switch_to+0x414/0x834 arch/arm64/kernel/process.c:735 (T)
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x13b0/0x28d4 kernel/sched/core.c:6767
 __schedule_loop kernel/sched/core.c:6845 [inline]
 schedule+0xb4/0x230 kernel/sched/core.c:6860
 io_schedule+0x84/0xf0 kernel/sched/core.c:7742
 folio_wait_bit_common+0x56c/0x9e0 mm/filemap.c:1317
 folio_wait_bit+0x30/0x40 mm/filemap.c:1456
 folio_wait_writeback+0x9c/0x100 mm/page-writeback.c:3149
 metapage_wait_for_io fs/jfs/jfs_metapage.h:110 [inline]
 diUpdatePMap+0x1f4/0xb90 fs/jfs/jfs_imap.c:2752
 txUpdateMap+0x708/0x8d0 fs/jfs/jfs_txnmgr.c:2356
 txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline]
 jfs_lazycommit+0x394/0x94c fs/jfs/jfs_txnmgr.c:2733
 kthread+0x5fc/0x75c kernel/kthread.c:464
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:847
INFO: task syz.0.25:6705 blocked for more than 145 seconds.
      Not tainted 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.25        state:D stack:0     pid:6705  tgid:6702  ppid:6489   task_flags:0x400140 flags:0x00000019
Call trace:
 __switch_to+0x414/0x834 arch/arm64/kernel/process.c:735 (T)
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x13b0/0x28d4 kernel/sched/core.c:6767
 __schedule_loop kernel/sched/core.c:6845 [inline]
 schedule+0xb4/0x230 kernel/sched/core.c:6860
 io_schedule+0x84/0xf0 kernel/sched/core.c:7742
 bit_wait_io+0x1c/0xac kernel/sched/wait_bit.c:247
 __wait_on_bit kernel/sched/wait_bit.c:49 [inline]
 out_of_line_wait_on_bit+0x158/0x1f0 kernel/sched/wait_bit.c:64
 wait_on_bit_io include/linux/wait_bit.h:105 [inline]
 __wait_on_buffer+0x6c/0x7c fs/buffer.c:123
 wait_on_buffer include/linux/buffer_head.h:422 [inline]
 ext4_commit_super+0x300/0x4e4 fs/ext4/super.c:6226
 ext4_setup_super+0x5b0/0x9b8 fs/ext4/super.c:3105
 __ext4_fill_super fs/ext4/super.c:5524 [inline]
 ext4_fill_super+0x3894/0x4e88 fs/ext4/super.c:5726
 get_tree_bdev_flags+0x360/0x414 fs/super.c:1636
 get_tree_bdev+0x2c/0x3c fs/super.c:1659
 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5758
 vfs_get_tree+0x90/0x28c fs/super.c:1759
 do_new_mount+0x228/0x814 fs/namespace.c:3881
 path_mount+0x5b4/0xde0 fs/namespace.c:4208
 do_mount fs/namespace.c:4221 [inline]
 __do_sys_mount fs/namespace.c:4432 [inline]
 __se_sys_mount fs/namespace.c:4409 [inline]
 __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4409
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767
 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
INFO: task kmmpd-loop0:6706 blocked for more than 148 seconds.
      Not tainted 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kmmpd-loop0     state:D stack:0     pid:6706  tgid:6706  ppid:2      task_flags:0x208040 flags:0x00000010
Call trace:
 __switch_to+0x414/0x834 arch/arm64/kernel/process.c:735 (T)
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x13b0/0x28d4 kernel/sched/core.c:6767
 __schedule_loop kernel/sched/core.c:6845 [inline]
 schedule+0xb4/0x230 kernel/sched/core.c:6860
 io_schedule+0x84/0xf0 kernel/sched/core.c:7742
 bit_wait_io+0x1c/0xac kernel/sched/wait_bit.c:247
 __wait_on_bit kernel/sched/wait_bit.c:49 [inline]
 out_of_line_wait_on_bit+0x158/0x1f0 kernel/sched/wait_bit.c:64
 wait_on_bit_io include/linux/wait_bit.h:105 [inline]
 __wait_on_buffer+0x6c/0x7c fs/buffer.c:123
 wait_on_buffer include/linux/buffer_head.h:422 [inline]
 write_mmp_block_thawed+0x208/0x2dc fs/ext4/mmp.c:52
 write_mmp_block+0x1d0/0x5dc fs/ext4/mmp.c:67
 kmmpd+0x2ec/0x9b8 fs/ext4/mmp.c:178
 kthread+0x5fc/0x75c kernel/kthread.c:464
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:847

Showing all locks held in the system:
1 lock held by kthreadd/2:
4 locks held by kworker/R-netns/8: