INFO: task kworker/u4:4:59 blocked for more than 143 seconds.
      Not tainted 6.7.0-rc4-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:4    state:D stack:19440 pid:59    tgid:59    ppid:2      flags:0x00004000
Workqueue: writeback wb_workfn (flush-7:4)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5376 [inline]
 __schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
 __schedule_loop kernel/sched/core.c:6763 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6778
 io_schedule+0x8c/0x100 kernel/sched/core.c:8998
 folio_wait_bit_common+0x881/0x12b0 mm/filemap.c:1273
 folio_lock include/linux/pagemap.h:1031 [inline]
 write_cache_pages+0x517/0x1400 mm/page-writeback.c:2441
 do_writepages+0x412/0x670 mm/page-writeback.c:2558
 __writeback_single_inode+0x155/0xfc0 fs/fs-writeback.c:1625
 writeback_sb_inodes+0x8e3/0x1220 fs/fs-writeback.c:1916
 __writeback_inodes_wb+0x11b/0x260 fs/fs-writeback.c:1987
 wb_writeback+0x461/0xc70 fs/fs-writeback.c:2094
 wb_check_background_flush fs/fs-writeback.c:2164 [inline]
 wb_do_writeback fs/fs-writeback.c:2252 [inline]
 wb_workfn+0xc33/0xfb0 fs/fs-writeback.c:2279
 process_one_work kernel/workqueue.c:2630 [inline]
 process_scheduled_works+0x90f/0x1420 kernel/workqueue.c:2703
 worker_thread+0xa5f/0x1000 kernel/workqueue.c:2784
 kthread+0x2d3/0x370 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>
INFO: task syz-executor.4:5758 blocked for more than 144 seconds.
      Not tainted 6.7.0-rc4-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:23024 pid:5758  tgid:5756  ppid:5104   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5376 [inline]
 __schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
 __schedule_loop kernel/sched/core.c:6763 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6778
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0x6a3/0xd60 kernel/locking/mutex.c:747
 reiserfs_write_lock+0x7a/0xd0 fs/reiserfs/lock.c:27
 map_block_for_writepage fs/reiserfs/inode.c:2380 [inline]
 reiserfs_write_full_folio fs/reiserfs/inode.c:2576 [inline]
 reiserfs_writepage+0xa21/0x38b0 fs/reiserfs/inode.c:2729
 writepage_cb+0x64/0x130 mm/page-writeback.c:2537
 write_cache_pages+0x827/0x1400 mm/page-writeback.c:2474
 do_writepages+0x412/0x670 mm/page-writeback.c:2558
 filemap_fdatawrite_wbc+0x125/0x180 mm/filemap.c:387
 __filemap_fdatawrite_range mm/filemap.c:420 [inline]
 file_write_and_wait_range+0x20f/0x300 mm/filemap.c:778
 reiserfs_sync_file+0x70/0x270 fs/reiserfs/file.c:151
 generic_write_sync include/linux/fs.h:2653 [inline]
 generic_file_write_iter+0x2a1/0x310 mm/filemap.c:4043
 call_write_iter include/linux/fs.h:2020 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x792/0xb20 fs/read_write.c:584
 ksys_write+0x1a0/0x2c0 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x45/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f48e967cae9
RSP: 002b:00007f48ea3e50c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f48e979bf80 RCX: 00007f48e967cae9
RDX: 00000000fffffdef RSI: 0000000020000140 RDI: 0000000000000005
RBP: 00007f48e96c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f48e979bf80 R15: 00007ffd7a706f98
 </TASK>
INFO: task syz-executor.4:5776 blocked for more than 144 seconds.
      Not tainted 6.7.0-rc4-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:25936 pid:5776  tgid:5756  ppid:5104   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5376 [inline]
 __schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
 __schedule_loop kernel/sched/core.c:6763 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6778
 io_schedule+0x8c/0x100 kernel/sched/core.c:8998
 folio_wait_bit_common+0x881/0x12b0 mm/filemap.c:1273
 __filemap_get_folio+0xa3/0xbb0 mm/filemap.c:1864
 pagecache_get_page+0x2c/0x1f0 mm/folio-compat.c:99
 find_or_create_page include/linux/pagemap.h:740 [inline]
 grab_cache_page include/linux/pagemap.h:856 [inline]
 convert_tail_for_hole fs/reiserfs/inode.c:592 [inline]
 reiserfs_get_block+0x3a26/0x5130 fs/reiserfs/inode.c:921
 __block_write_begin_int+0x54d/0x1ad0 fs/buffer.c:2119
 reiserfs_write_begin+0x24d/0x520 fs/reiserfs/inode.c:2767
 generic_cont_expand_simple+0x18b/0x2a0 fs/buffer.c:2473
 reiserfs_setattr+0x57d/0x1140 fs/reiserfs/inode.c:3298
 notify_change+0xb99/0xe60 fs/attr.c:499
 do_truncate+0x220/0x300 fs/open.c:66
 do_sys_ftruncate+0x2f3/0x390 fs/open.c:194
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x45/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f48e967cae9
RSP: 002b:00007f48ea3c40c8 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007f48e979c050 RCX: 00007f48e967cae9
RDX: 0000000000000000 RSI: 0000000007000000 RDI: 0000000000000006
RBP: 00007f48e96c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f48e979c050 R15: 00007ffd7a706f98
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/29:
 #0: ffffffff8d92cf60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
 #0: ffffffff8d92cf60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
 #0: ffffffff8d92cf60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
1 lock held by khugepaged/35:
3 locks held by kworker/u4:3/48:
3 locks held by kworker/u4:4/59:
 #0: ffff888142641d38 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
 #0: ffff888142641d38 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2703
 #1: ffffc900015a7d20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
 #1: ffffc900015a7d20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2703
 #2: ffff888061a0e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: super_trylock_shared+0x22/0xf0 fs/super.c:610
2 locks held by getty/4814:
 #0: ffff888029bf20a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
4 locks held by syz-executor.5/5110:
2 locks held by kworker/1:2/17577:
 #0: ffff888012c72938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
 #0: ffff888012c72938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2703
 #1: ffffc900146ffd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
 #1: ffffc900146ffd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2703
4 locks held by kworker/0:2/3212:
 #0: 
ffff888012c71538 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
ffff888012c71538 ((wq_completion)events_long){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2703
 #1: ffffc9000ac4fd20 ((work_completion)(&(&sbi->old_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
 #1: ffffc9000ac4fd20 ((work_completion)(&(&sbi->old_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2703
 #2: 
ffff888061a0e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: flush_old_commits+0xcb/0x2f0 fs/reiserfs/super.c:97
 #3: ffff88807b633090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x7a/0xd0 fs/reiserfs/lock.c:27
3 locks held by syz-executor.4/5758:
 #0: ffff888030c5cfc8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2b0/0x340 fs/file.c:1177
 #1: ffff888061a0e418 (sb_writers#26){.+.+}-{0:0}, at: vfs_write+0x223/0xb20 fs/read_write.c:580
 #2: ffff88807b633090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x7a/0xd0 fs/reiserfs/lock.c:27
3 locks held by syz-executor.4/5776:
 #0: ffff888061a0e418 (sb_writers#26){.+.+}-{0:0}, at: do_sys_ftruncate+0x258/0x390 fs/open.c:191
 #1: ffff88803bab8980 (&sb->s_type->i_mutex_key#31){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
 #1: ffff88803bab8980 (&sb->s_type->i_mutex_key#31){+.+.}-{3:3}, at: do_truncate+0x20c/0x300 fs/open.c:64
 #2: ffff88807b633090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock_nested+0x5f/0xd0 fs/reiserfs/lock.c:78
2 locks held by syz-executor.4/7767:
4 locks held by syz-executor.2/7769:

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

NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.7.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x198/0x310 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xfaf/0xff0 kernel/hung_task.c:379
 kthread+0x2d3/0x370 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4500 Comm: klogd Not tainted 6.7.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:vsnprintf+0x1ca3/0x1da0
Code: c1 0f 8c c8 f5 ff ff 48 8b 7c 24 10 e8 26 eb d9 f6 48 8b 54 24 10 e9 b4 f5 ff ff e8 b7 e2 7d f6 4c 8b 64 24 48 48 8b 5c 24 50 <eb> 14 e8 a6 e2 7d f6 4c 89 74 24 28 4c 8b 7c 24 18 4c 8b 64 24 48
RSP: 0018:ffffc900030ef820 EFLAGS: 00000293
RAX: ffffffff8b109789 RBX: 000000007fffffff RCX: ffff88807cd23b80
RDX: 0000000000000000 RSI: ffffffff8b6b6cc3 RDI: ffffc900030efba2
RBP: ffffc900030ef910 R08: ffffc900030efba2 R09: 1ffff9200061df74
R10: dffffc0000000000 R11: fffff5200061df75 R12: 1ffff9200061df10
R13: dffffc0000000000 R14: ffffc900030efba3 R15: ffffc900830efb9f
FS:  00007f584be15380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc1bf004d58 CR3: 000000002636e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 sprintf+0xda/0x120 lib/vsprintf.c:3023
 print_syslog kernel/printk/printk.c:1317 [inline]
 info_print_prefix+0xde/0x300 kernel/printk/printk.c:1347
 record_print_text kernel/printk/printk.c:1399 [inline]
 syslog_print+0x4b7/0x9b0 kernel/printk/printk.c:1610
 do_syslog+0x505/0x890 kernel/printk/printk.c:1728
 __do_sys_syslog kernel/printk/printk.c:1820 [inline]
 __se_sys_syslog kernel/printk/printk.c:1818 [inline]
 __x64_sys_syslog+0x7c/0x90 kernel/printk/printk.c:1818
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x45/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f584bf76fa7
Code: 73 01 c3 48 8b 0d 81 ce 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 67 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 51 ce 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007fff8f1e8328 EFLAGS: 00000206 ORIG_RAX: 0000000000000067
RAX: ffffffffffffffda RBX: 00007f584c1154a0 RCX: 00007f584bf76fa7
RDX: 00000000000003ff RSI: 00007f584c1154a0 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000007 R09: eab8fcb415648c52
R10: 0000000000004000 R11: 0000000000000206 R12: 00007f584c1154a0
R13: 00007f584c105212 R14: 00007f584c11551e R15: 00007f584c11551e
 </TASK>