INFO: task kworker/1:5:3723 blocked for more than 143 seconds.
      Not tainted 6.1.0-rc6-syzkaller-00015-gc3eb11fbb826 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:5     state:D stack:20128 pid:3723  ppid:2      flags:0x00004000
Workqueue: events_long flush_old_commits
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5209 [inline]
 __schedule+0x8c9/0xd70 kernel/sched/core.c:6521
 schedule+0xcb/0x190 kernel/sched/core.c:6597
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6656
 __mutex_lock_common+0xe4f/0x26e0 kernel/locking/mutex.c:679
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799
 reiserfs_write_lock+0x77/0xd0 fs/reiserfs/lock.c:27
 reiserfs_sync_fs fs/reiserfs/super.c:76 [inline]
 flush_old_commits+0x1ee/0x300 fs/reiserfs/super.c:111
 process_one_work+0x877/0xdb0 kernel/workqueue.c:2289
 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
INFO: task syz-executor.2:30847 blocked for more than 144 seconds.
      Not tainted 6.1.0-rc6-syzkaller-00015-gc3eb11fbb826 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2  state:D stack:20056 pid:30847 ppid:3683   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5209 [inline]
 __schedule+0x8c9/0xd70 kernel/sched/core.c:6521
 schedule+0xcb/0x190 kernel/sched/core.c:6597
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6656
 __mutex_lock_common+0xe4f/0x26e0 kernel/locking/mutex.c:679
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799
 reiserfs_write_lock+0x77/0xd0 fs/reiserfs/lock.c:27
 reiserfs_get_block+0x24e/0x5180 fs/reiserfs/inode.c:680
 __block_write_begin_int+0x54c/0x1a80 fs/buffer.c:1991
 reiserfs_write_begin+0x247/0x510 fs/reiserfs/inode.c:2775
 generic_perform_write+0x2e4/0x5e0 mm/filemap.c:3753
 __generic_file_write_iter+0x176/0x400 mm/filemap.c:3881
 generic_file_write_iter+0xab/0x310 mm/filemap.c:3913
 call_write_iter include/linux/fs.h:2191 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x7dc/0xc50 fs/read_write.c:584
 ksys_write+0x177/0x2a0 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f3450c8c0d9
RSP: 002b:00007f34519b9168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f3450dabf80 RCX: 00007f3450c8c0d9
RDX: 000000000208e24b RSI: 0000000020000000 RDI: 0000000000000006
RBP: 00007f3450ce7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcaa0e215f R14: 00007f34519b9300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.2:30878 blocked for more than 145 seconds.
      Not tainted 6.1.0-rc6-syzkaller-00015-gc3eb11fbb826 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2  state:D stack:19512 pid:30878 ppid:3683   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5209 [inline]
 __schedule+0x8c9/0xd70 kernel/sched/core.c:6521
 schedule+0xcb/0x190 kernel/sched/core.c:6597
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6656
 __mutex_lock_common+0xe4f/0x26e0 kernel/locking/mutex.c:679
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799
 reiserfs_write_lock+0x77/0xd0 fs/reiserfs/lock.c:27
 reiserfs_get_block+0x24e/0x5180 fs/reiserfs/inode.c:680
 do_mpage_readpage+0x970/0x1c50 fs/mpage.c:208
 mpage_readahead+0x210/0x380 fs/mpage.c:361
 read_pages+0x169/0x9c0 mm/readahead.c:161
 page_cache_ra_unbounded+0x703/0x820 mm/readahead.c:270
 page_cache_sync_readahead include/linux/pagemap.h:1213 [inline]
 filemap_get_pages+0x465/0x10d0 mm/filemap.c:2581
 filemap_read+0x3cf/0xea0 mm/filemap.c:2675
 call_read_iter include/linux/fs.h:2185 [inline]
 generic_file_splice_read+0x1ff/0x5d0 fs/splice.c:309
 do_splice_to fs/splice.c:793 [inline]
 splice_direct_to_actor+0x41b/0xc00 fs/splice.c:865
 do_splice_direct+0x279/0x3d0 fs/splice.c:974
 do_sendfile+0x5fb/0xf80 fs/read_write.c:1255
 __do_sys_sendfile64 fs/read_write.c:1323 [inline]
 __se_sys_sendfile64+0x14f/0x1b0 fs/read_write.c:1309
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f3450c8c0d9
RSP: 002b:00007f3451998168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f3450dac050 RCX: 00007f3450c8c0d9
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 0000000000000008
RBP: 00007f3450ce7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000001000fc4 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcaa0e215f R14: 00007f3451998300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.2:30883 blocked for more than 145 seconds.
      Not tainted 6.1.0-rc6-syzkaller-00015-gc3eb11fbb826 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2  state:D stack:22328 pid:30883 ppid:3683   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5209 [inline]
 __schedule+0x8c9/0xd70 kernel/sched/core.c:6521
 schedule+0xcb/0x190 kernel/sched/core.c:6597
 io_schedule+0x83/0x100 kernel/sched/core.c:8741
 folio_wait_bit_common+0x83a/0x12a0 mm/filemap.c:1296
 __folio_lock mm/filemap.c:1659 [inline]
 folio_lock include/linux/pagemap.h:939 [inline]
 __filemap_get_folio+0x566/0x1260 mm/filemap.c:1931
 pagecache_get_page+0x28/0x260 mm/folio-compat.c:110
 find_or_create_page include/linux/pagemap.h:613 [inline]
 grab_cache_page include/linux/pagemap.h:743 [inline]
 grab_tail_page fs/reiserfs/inode.c:2201 [inline]
 reiserfs_truncate_file+0x1e3/0x790 fs/reiserfs/inode.c:2269
 reiserfs_vfs_truncate_file+0x29/0x40 fs/reiserfs/file.c:133
 reiserfs_direct_IO+0x1df/0x200 fs/reiserfs/inode.c:3258
 generic_file_direct_write+0x294/0x610 mm/filemap.c:3677
 __generic_file_write_iter+0x1c4/0x400 mm/filemap.c:3837
 generic_file_write_iter+0xab/0x310 mm/filemap.c:3913
 call_write_iter include/linux/fs.h:2191 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x7dc/0xc50 fs/read_write.c:584
 ksys_write+0x177/0x2a0 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f3450c8c0d9
RSP: 002b:00007f3451977168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f3450dac120 RCX: 00007f3450c8c0d9
RDX: 00000000fffffda8 RSI: 0000000020000200 RDI: 0000000000000004
RBP: 00007f3450ce7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcaa0e215f R14: 00007f3451977300 R15: 0000000000022000
 </TASK>

Showing all locks held in the system:
3 locks held by kworker/u4:0/9:
1 lock held by rcu_tasks_kthre/12:
 #0: ffffffff8d127330 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
 #0: ffffffff8d127b30 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
 #0: ffffffff8d127160 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3305:
 #0: ffff888028f1a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
 #1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 drivers/tty/n_tty.c:2177
3 locks held by kworker/u4:4/3702:
4 locks held by kworker/1:5/3723:
 #0: ffff888012865538 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
 #1: ffffc9000465fd00 ((work_completion)(&(&sbi->old_work)->work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
 #2: ffff888059c860e0 (&type->s_umount_key#85){++++}-{3:3}, at: flush_old_commits+0xd4/0x300 fs/reiserfs/super.c:97
 #3: ffff88801ccd9090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x77/0xd0 fs/reiserfs/lock.c:27
2 locks held by kworker/1:12/5787:
 #0: ffff888012866538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
 #1: ffffc900031cfd00 ((work_completion)(&rew->rew_work)
){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
1 lock held by syz-executor.1/15788:
 #0: ffffffff8d12c738 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline]
 #0: ffffffff8d12c738 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x455/0x860 kernel/rcu/tree_exp.h:946
4 locks held by syz-executor.2/30847:
 #0: ffff8880795ce5e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x242/0x2e0 fs/file.c:1037
 #1: ffff888059c86460 (sb_writers#17){.+.+}-{0:0}, at: vfs_write+0x287/0xc50 fs/read_write.c:580
 #2: ffff8880842afa20 (&sb->s_type->i_mutex_key#23){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff8880842afa20 (&sb->s_type->i_mutex_key#23){+.+.}-{3:3}, at: generic_file_write_iter+0x7f/0x310 mm/filemap.c:3910
 #3: ffff88801ccd9090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x77/0xd0 fs/reiserfs/lock.c:27
3 locks held by syz-executor.2/30878:
 #0: ffff888059c86460 (sb_writers#17){.+.+}-{0:0}, at: do_sendfile+0x5d6/0xf80 fs/read_write.c:1254
 #1: ffff8880842af520 (mapping.invalidate_lock#14){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:811 [inline]
 #1: ffff8880842af520 (mapping.invalidate_lock#14){.+.+}-{3:3}, at: page_cache_ra_unbounded+0xe9/0x820 mm/readahead.c:226
 #2: ffff88801ccd9090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x77/0xd0 fs/reiserfs/lock.c:27
5 locks held by syz-executor.2/30883:
 #0: ffff8880795cf9e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x242/0x2e0 fs/file.c:1037
 #1: ffff888059c86460 (sb_writers#17){.+.+}-{0:0}, at: vfs_write+0x287/0xc50 fs/read_write.c:580
 #2: ffff8880842af380 (&sb->s_type->i_mutex_key#23){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff8880842af380 (&sb->s_type->i_mutex_key#23){+.+.}-{3:3}, at: generic_file_write_iter+0x7f/0x310 mm/filemap.c:3910
 #3: ffff8880842af158 (&ei->tailpack){+.+.}-{3:3}, at: reiserfs_vfs_truncate_file+0x1c/0x40 fs/reiserfs/file.c:132
 #4: ffff88801ccd9090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x77/0xd0 fs/reiserfs/lock.c:27
1 lock held by syz-executor.2/31004:
 #0: ffffffff8d12c738 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
 #0: ffffffff8d12c738 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x384/0x860 kernel/rcu/tree_exp.h:946

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

NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.0-rc6-syzkaller-00015-gc3eb11fbb826 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
 nmi_cpu_backtrace+0x46f/0x4f0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x1ba/0x420 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
 watchdog+0xcf5/0xd40 kernel/hung_task.c:377
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 1452 Comm: syz-executor.3 Not tainted 6.1.0-rc6-syzkaller-00015-gc3eb11fbb826 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:orc_ip arch/x86/kernel/unwind_orc.c:30 [inline]
RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:52 [inline]
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:178 [inline]
RIP: 0010:unwind_next_frame+0x57f/0x24c0 arch/x86/kernel/unwind_orc.c:448
Code: f8 48 89 c1 48 c1 f9 02 48 c1 e8 3f 48 01 c8 48 83 e0 fe 49 8d 1c 47 48 89 d8 48 c1 e8 03 42 0f b6 04 08 84 c0 75 27 48 63 03 <48> 01 d8 48 8d 4b 04 4c 39 e0 4c 0f 46 f9 48 8d 43 fc 4c 0f 47 e8
RSP: 0018:ffffc90003adf260 EFLAGS: 00000246
RAX: fffffffffba0701a RBX: ffffffff8ef1ccf8 RCX: 0000000000000008
RDX: ffffffff8f9f3654 RSI: ffffffff8a923d36 RDI: ffffffff813c4873
RBP: ffffffff8ef1cce8 R08: 0000000000000013 R09: dffffc0000000000
R10: fffff5200075be74 R11: 1ffff9200075be72 R12: ffffffff8a923d35
R13: ffffffff8ef1cd08 R14: ffffffff8ef1cce8 R15: ffffffff8ef1cce8
FS:  00007fba5fdff700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110f2624cc CR3: 000000005967e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 arch_stack_walk+0xb2/0xe0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x104/0x1e0 kernel/stacktrace.c:122
 save_stack+0xe5/0x1e0 mm/page_owner.c:127
 __reset_page_owner+0x52/0x1a0 mm/page_owner.c:148
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1459 [inline]
 free_pcp_prepare+0x80c/0x8f0 mm/page_alloc.c:1509
 free_unref_page_prepare mm/page_alloc.c:3387 [inline]
 free_unref_page_list+0xb4/0x7b0 mm/page_alloc.c:3529
 release_pages+0x232a/0x25c0 mm/swap.c:1055
 __pagevec_release+0x7d/0xf0 mm/swap.c:1075
 pagevec_release include/linux/pagevec.h:71 [inline]
 folio_batch_release include/linux/pagevec.h:135 [inline]
 shmem_undo_range+0x89a/0x2260 mm/shmem.c:946
 shmem_truncate_range mm/shmem.c:1034 [inline]
 shmem_evict_inode+0x27f/0xab0 mm/shmem.c:1143
 evict+0x2a4/0x620 fs/inode.c:664
 __dentry_kill+0x3b1/0x5b0 fs/dcache.c:607
 dentry_kill+0xbb/0x290
 dput+0x1f3/0x410 fs/dcache.c:913
 __fput+0x5e4/0x880 fs/file_table.c:328
 task_work_run+0x243/0x300 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0x124/0x150 kernel/entry/common.c:171
 exit_to_user_mode_prepare+0xb2/0x140 kernel/entry/common.c:203
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x26/0x60 kernel/entry/common.c:296
 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fba60a8bec7
Code: 3c 1c 48 f7 d8 49 39 c4 72 b8 e8 c4 57 02 00 85 c0 78 bd 48 83 c4 08 4c 89 e0 5b 41 5c c3 0f 1f 44 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fba5fdfef88 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00000000000051ab RCX: 00007fba60a8bec7
RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000004
RBP: 00007fba5fdff6b8 R08: 00007fba5fdff020 R09: 000000000100001c
R10: 000000000100001c R11: 0000000000000246 R12: ffffffffffffffff
R13: 0000000000000011 R14: 00007fba5fdfefe0 R15: 0000000020000080
 </TASK>