INFO: task kworker/u8:3:57 blocked for more than 143 seconds.
      Not tainted 6.13.0-syzkaller-05252-gbc8198dc7ebc #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:3    state:D stack:21200 pid:57    tgid:57    ppid:2      flags:0x00004000
Workqueue: writeback wb_workfn (flush-7:8)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5377 [inline]
 __schedule+0x181a/0x4b90 kernel/sched/core.c:6764
 __schedule_loop kernel/sched/core.c:6841 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6856
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6913
 __mutex_lock_common kernel/locking/mutex.c:662 [inline]
 __mutex_lock+0x817/0x1010 kernel/locking/mutex.c:730
 hfs_find_init+0x16e/0x1f0
 hfs_ext_write_extent+0x12c/0x1d0 fs/hfs/extent.c:141
 hfs_write_inode+0xbc/0xec0 fs/hfs/inode.c:429
 write_inode fs/fs-writeback.c:1525 [inline]
 __writeback_single_inode+0x708/0x10d0 fs/fs-writeback.c:1745
 writeback_sb_inodes+0x820/0x1360 fs/fs-writeback.c:1976
 __writeback_inodes_wb+0x11b/0x260 fs/fs-writeback.c:2047
 wb_writeback+0x427/0xb80 fs/fs-writeback.c:2158
 wb_check_background_flush fs/fs-writeback.c:2228 [inline]
 wb_do_writeback fs/fs-writeback.c:2316 [inline]
 wb_workfn+0xc4b/0x1080 fs/fs-writeback.c:2343
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317
 worker_thread+0x870/0xd30 kernel/workqueue.c:3398
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
INFO: task syz.8.51:6588 blocked for more than 143 seconds.
      Not tainted 6.13.0-syzkaller-05252-gbc8198dc7ebc #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.8.51        state:D stack:25296 pid:6588  tgid:6587  ppid:6265   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5377 [inline]
 __schedule+0x181a/0x4b90 kernel/sched/core.c:6764
 __schedule_loop kernel/sched/core.c:6841 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6856
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6913
 __mutex_lock_common kernel/locking/mutex.c:662 [inline]
 __mutex_lock+0x817/0x1010 kernel/locking/mutex.c:730
 hfs_find_init+0x16e/0x1f0
 hfs_ext_read_extent fs/hfs/extent.c:200 [inline]
 hfs_extend_file+0x31b/0x1450 fs/hfs/extent.c:401
 hfs_bmap_reserve+0xd9/0x400 fs/hfs/btree.c:234
 __hfs_ext_write_extent+0x22e/0x4f0 fs/hfs/extent.c:121
 __hfs_ext_cache_extent+0x6a/0x990 fs/hfs/extent.c:174
 hfs_ext_read_extent fs/hfs/extent.c:202 [inline]
 hfs_extend_file+0x344/0x1450 fs/hfs/extent.c:401
 hfs_get_block+0x3e4/0xb60 fs/hfs/extent.c:353
 __block_write_begin_int+0x692/0x19a0 fs/buffer.c:2116
 block_write_begin fs/buffer.c:2226 [inline]
 cont_write_begin+0x77f/0xb40 fs/buffer.c:2577
 hfs_write_begin+0x68/0xb0 fs/hfs/inode.c:52
 generic_perform_write+0x346/0x990 mm/filemap.c:4132
 generic_file_write_iter+0xae/0x310 mm/filemap.c:4259
 new_sync_write fs/read_write.c:586 [inline]
 vfs_write+0xacf/0xd10 fs/read_write.c:679
 ksys_write+0x18f/0x2b0 fs/read_write.c:731
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f922358cd29
RSP: 002b:00007f92243cb038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f92237a5fa0 RCX: 00007f922358cd29
RDX: 00000000ffffff5b RSI: 0000000020006700 RDI: 0000000000000004
RBP: 00007f922360e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f92237a5fa0 R15: 00007ffcc6edb2d8
 </TASK>
INFO: task syz.8.51:6627 blocked for more than 144 seconds.
      Not tainted 6.13.0-syzkaller-05252-gbc8198dc7ebc #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.8.51        state:D stack:25744 pid:6627  tgid:6587  ppid:6265   flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5377 [inline]
 __schedule+0x181a/0x4b90 kernel/sched/core.c:6764
 __schedule_loop kernel/sched/core.c:6841 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6856
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6913
 __mutex_lock_common kernel/locking/mutex.c:662 [inline]
 __mutex_lock+0x817/0x1010 kernel/locking/mutex.c:730
 hfs_find_init+0x16e/0x1f0
 hfs_ext_read_extent fs/hfs/extent.c:200 [inline]
 hfs_extend_file+0x31b/0x1450 fs/hfs/extent.c:401
 hfs_get_block+0x3e4/0xb60 fs/hfs/extent.c:353
 __block_write_begin_int+0x692/0x19a0 fs/buffer.c:2116
 block_write_begin fs/buffer.c:2226 [inline]
 cont_write_begin+0x77f/0xb40 fs/buffer.c:2577
 hfs_write_begin+0x68/0xb0 fs/hfs/inode.c:52
 generic_perform_write+0x346/0x990 mm/filemap.c:4132
 generic_file_write_iter+0xae/0x310 mm/filemap.c:4259
 new_sync_write fs/read_write.c:586 [inline]
 vfs_write+0xacf/0xd10 fs/read_write.c:679
 ksys_pwrite64 fs/read_write.c:786 [inline]
 __do_sys_pwrite64 fs/read_write.c:794 [inline]
 __se_sys_pwrite64 fs/read_write.c:791 [inline]
 __x64_sys_pwrite64+0x1ac/0x240 fs/read_write.c:791
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f922358cd29
RSP: 002b:00007f92243aa038 EFLAGS: 00000246 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007f92237a6080 RCX: 00007f922358cd29
RDX: 00000000200000c1 RSI: 00000000200000c0 RDI: 0000000000000005
RBP: 00007f922360e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000009000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f92237a6080 R15: 00007ffcc6edb2d8
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-syzkaller-05252-gbc8198dc7ebc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:234 [inline]
 watchdog+0xff6/0x1040 kernel/hung_task.c:397
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 3583 Comm: kworker/u8:8 Not tainted 6.13.0-syzkaller-05252-gbc8198dc7ebc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue:  0x0 (bat_events)
RIP: 0010:dl_server_stop+0x0/0x90 kernel/sched/deadline.c:1677
Code: fa 4c 89 ef be 01 00 00 00 e8 4c bf f9 ff e9 1e f6 ff ff 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <66> 0f 1f 00 41 57 41 56 53 49 89 fe 49 bf 00 00 00 00 00 fc ff df
RSP: 0018:ffffc9000c817940 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 0000000000000001 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8880b863f128
RBP: ffff8880b863e780 R08: ffffffff814edad3 R09: 1ffffffff2034cc6
R10: dffffc0000000000 R11: fffffbfff2034cc7 R12: ffff88801c285a00
R13: 1ffff110170c7cf0 R14: ffff8880b863e740 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005573422fff50 CR3: 000000000e738000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 dequeue_entities+0xab6/0xdd0 kernel/sched/fair.c:7119
 pick_next_entity kernel/sched/fair.c:5567 [inline]
 pick_task_fair+0x2e0/0x4c0 kernel/sched/fair.c:8818
 pick_next_task_fair+0x23/0xc90 kernel/sched/fair.c:8838
 __pick_next_task+0xdd/0x400 kernel/sched/core.c:6031
 __schedule+0x75b/0x4b90 kernel/sched/core.c:6716
 __schedule_loop kernel/sched/core.c:6841 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6856
 worker_thread+0xa30/0xd30 kernel/workqueue.c:3413
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>