INFO: task syz-executor.2:31093 blocked for more than 143 seconds.
Not tainted 6.7.0-rc2-syzkaller-00206-gb46ae77f6787 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:22608 pid:31093 tgid:31091 ppid:5092 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: 0033:0x7f259587cae9
RSP: 002b:00007f25965220c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f259599bf80 RCX: 00007f259587cae9
RDX: 00000000fffffdef RSI: 0000000020000140 RDI: 0000000000000005
RBP: 00007f25958c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f259599bf80 R15: 00007ffe11674438
</TASK>
INFO: task syz-executor.2:31110 blocked for more than 143 seconds.
Not tainted 6.7.0-rc2-syzkaller-00206-gb46ae77f6787 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:25936 pid:31110 tgid:31091 ppid:5092 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: 0033:0x7f259587cae9
RSP: 002b:00007f25965010c8 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007f259599c050 RCX: 00007f259587cae9
RDX: 0000000000000000 RSI: 0000000007000000 RDI: 0000000000000006
RBP: 00007f25958c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f259599c050 R15: 00007ffe11674438
</TASK>
Showing all locks held in the system:
2 locks held by kworker/u4:0/11:
#0: ffff8880b993c358 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
#1: ffff8880b9928808 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
4 locks held by kworker/1:0/23:
#0: ffff888012c71538 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
#0: ffff888012c71538 ((wq_completion)events_long){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2703
#1: ffffc900001d7d20 ((work_completion)(&(&sbi->old_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
#1: ffffc900001d7d20 ((work_completion)(&(&sbi->old_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2703
#2: ffff8880540440e0 (&type->s_umount_key#25){++++}-{3:3}, at: flush_old_commits+0xcb/0x2f0 fs/reiserfs/super.c:97
#3: ffff888029148090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x7a/0xd0 fs/reiserfs/lock.c:27
1 lock held by khungtaskd/29:
#0: ffffffff8d92d060 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
#0: ffffffff8d92d060 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
#0: ffffffff8d92d060 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6613
2 locks held by getty/4815:
#0: ffff88802623e0a0 (&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
1 lock held by syz-executor.1/5091:
3 locks held by kworker/u4:6/29514:
#0: ffff888141a59938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
#0: ffff888141a59938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2703
#1: ffffc90015937d20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
#1: ffffc90015937d20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2703
#2: ffff8880540440e0 (&type->s_umount_key#25){++++}-{3:3}, at: super_trylock_shared+0x22/0xf0 fs/super.c:610
3 locks held by syz-executor.2/31093:
#0: ffff88801ff31248 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2b0/0x340 fs/file.c:1177
#1: ffff888054044418 (sb_writers#29){.+.+}-{0:0}, at: vfs_write+0x223/0xb20 fs/read_write.c:580
#2: ffff888029148090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x7a/0xd0 fs/reiserfs/lock.c:27
3 locks held by syz-executor.2/31110:
#0: ffff888054044418 (sb_writers#29){.+.+}-{0:0}, at: do_sys_ftruncate+0x258/0x390 fs/open.c:191
#1: ffff88804d4dc520 (&sb->s_type->i_mutex_key#35){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88804d4dc520 (&sb->s_type->i_mutex_key#35){+.+.}-{3:3}, at: do_truncate+0x20c/0x300 fs/open.c:64
#2: ffff888029148090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock_nested+0x5f/0xd0 fs/reiserfs/lock.c:78
2 locks held by kworker/0:2/31235:
#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: ffffc9001627fd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
#1: ffffc9001627fd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2703
1 lock held by syz-executor.0/32592:
#0: ffff88802a9f4418 (sb_writers#4){.+.+}-{0:0}, at: vfs_writev fs/read_write.c:932 [inline]
#0: ffff88802a9f4418 (sb_writers#4){.+.+}-{0:0}, at: do_pwritev+0x1fe/0x360 fs/read_write.c:1030
2 locks held by syz-executor.5/32589:
5 locks held by syz-executor.3/32593:
2 locks held by syz-executor.2/32591:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.7.0-rc2-syzkaller-00206-gb46ae77f6787 #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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5091 Comm: syz-executor.1 Not tainted 6.7.0-rc2-syzkaller-00206-gb46ae77f6787 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline]
RIP: 0010:rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:700
Code: 2b ff ff ff e8 6c 47 a0 09 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 41 57 41 56 53 65 ff 05 08 1a 8d 7e e8 2b 64 a0 09 <89> c3 83 f8 08 73 76 49 bf 00 00 00 00 00 fc ff df 4c 8d 34 dd 40
RSP: 0018:ffffc90003e5f530 EFLAGS: 00000282
RAX: 0000000000000001 RBX: ffffea000110a180 RCX: ffff888023221dc0
RDX: ffff888023221dc0 RSI: ffffffff8bbdf5a0 RDI: ffffffff8bbdf560
RBP: 0000000000000001 R08: ffffffff81f5c231 R09: 1ffffffff21ba86c
R10: dffffc0000000000 R11: fffffbfff21ba86d R12: ffffea000110a198
R13: dffffc0000000000 R14: ffffffff81f5c200 R15: ffffea000110a188
FS: 00005555556f7480(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2bd7d95e70 CR3: 000000005ca95000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>
<TASK>
rcu_read_lock include/linux/rcupdate.h:748 [inline]
page_ext_get+0x5a/0x2a0 mm/page_ext.c:508
__page_table_check_zero+0x13d/0x4a0 mm/page_table_check.c:140
page_table_check_free include/linux/page_table_check.h:41 [inline]
free_pages_prepare mm/page_alloc.c:1138 [inline]
free_unref_page_prepare+0x945/0xa60 mm/page_alloc.c:2347
free_unref_page_list+0x5a0/0x840 mm/page_alloc.c:2533
release_pages+0x2117/0x2400 mm/swap.c:1042
__folio_batch_release+0x84/0x100 mm/swap.c:1062
folio_batch_release include/linux/pagevec.h:83 [inline]
shmem_undo_range+0x6aa/0x19d0 mm/shmem.c:1004
shmem_truncate_range mm/shmem.c:1096 [inline]
shmem_evict_inode+0x29b/0xa60 mm/shmem.c:1224
evict+0x2a4/0x630 fs/inode.c:666
__dentry_kill+0x436/0x660 fs/dcache.c:607
dentry_kill+0xbb/0x290
dput+0x21e/0x470 fs/dcache.c:913
__fput+0x60b/0xa10 fs/file_table.c:402
task_work_run+0x24a/0x300 kernel/task_work.c:180
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:171
exit_to_user_mode_prepare+0xb1/0x150 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x69/0x2a0 kernel/entry/common.c:296
do_syscall_64+0x52/0x110 arch/x86/entry/common.c:88
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f301287de17
Code: b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b0 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007fffaaeebd88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f301287de17
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007fffaaeebe40
RBP: 00007fffaaeebe40 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fffaaeecf00
R13: 00007f30128c73b9 R14: 00000000001d01bb R15: 0000000000000017
</TASK>