INFO: task syz-executor.5:10266 blocked for more than 143 seconds.
Not tainted 6.3.0-rc6-syzkaller-00016-g0d3eb744aed4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:23000 pid:10266 ppid:5106 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5307 [inline]
__schedule+0x173b/0x4630 kernel/sched/core.c:6625
schedule+0xc3/0x180 kernel/sched/core.c:6701
io_schedule+0x8c/0x100 kernel/sched/core.c:8887
folio_wait_bit_common+0x86c/0x12b0 mm/filemap.c:1301
lock_page include/linux/pagemap.h:973 [inline]
set_page_dirty_lock+0xfd/0x2d0 mm/page-writeback.c:2861
bio_set_pages_dirty+0x1f7/0x2c0 block/bio.c:1480
iomap_dio_bio_iter+0xb7f/0x1440 fs/iomap/direct-io.c:341
__iomap_dio_rw+0x121a/0x20d0 fs/iomap/direct-io.c:595
iomap_dio_rw+0x46/0xa0 fs/iomap/direct-io.c:683
btrfs_dio_read+0xbc/0x110 fs/btrfs/inode.c:7794
btrfs_direct_read fs/btrfs/file.c:3772 [inline]
btrfs_file_read_iter+0x39d/0x6b0 fs/btrfs/file.c:3811
do_iter_read+0x71a/0xc70 fs/read_write.c:796
vfs_readv fs/read_write.c:916 [inline]
do_preadv+0x212/0x350 fs/read_write.c:1008
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f13cb08c169
RSP: 002b:00007f13cbd04168 EFLAGS: 00000246 ORIG_RAX: 0000000000000147
RAX: ffffffffffffffda RBX: 00007f13cb1abf80 RCX: 00007f13cb08c169
RDX: 0000000000000001 RSI: 0000000020000100 RDI: 0000000000000006
RBP: 00007f13cb0e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe7d78f44f R14: 00007f13cbd04300 R15: 0000000000022000
INFO: task syz-executor.5:10315 blocked for more than 143 seconds.
Not tainted 6.3.0-rc6-syzkaller-00016-g0d3eb744aed4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:23592 pid:10315 ppid:5106 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5307 [inline]
__schedule+0x173b/0x4630 kernel/sched/core.c:6625
schedule+0xc3/0x180 kernel/sched/core.c:6701
wait_on_state fs/btrfs/extent-io-tree.c:707 [inline]
wait_extent_bit+0x50c/0x670 fs/btrfs/extent-io-tree.c:751
lock_extent+0x1ce/0x280 fs/btrfs/extent-io-tree.c:1742
find_lock_delalloc_range+0x4c9/0x9a0 fs/btrfs/extent_io.c:487
writepage_delalloc+0x1f1/0x590 fs/btrfs/extent_io.c:1417
__extent_writepage+0x850/0x16d0 fs/btrfs/extent_io.c:1724
extent_write_cache_pages fs/btrfs/extent_io.c:2635 [inline]
extent_writepages+0xc31/0x1930 fs/btrfs/extent_io.c:2755
do_writepages+0x3a6/0x670 mm/page-writeback.c:2551
filemap_fdatawrite_wbc+0x125/0x180 mm/filemap.c:390
__filemap_fdatawrite_range mm/filemap.c:423 [inline]
filemap_write_and_wait_range+0x1d4/0x2c0 mm/filemap.c:678
__iomap_dio_rw+0xae6/0x20d0 fs/iomap/direct-io.c:566
iomap_dio_rw+0x46/0xa0 fs/iomap/direct-io.c:683
btrfs_dio_read+0xbc/0x110 fs/btrfs/inode.c:7794
btrfs_direct_read fs/btrfs/file.c:3772 [inline]
btrfs_file_read_iter+0x39d/0x6b0 fs/btrfs/file.c:3811
do_iter_read+0x71a/0xc70 fs/read_write.c:796
vfs_readv fs/read_write.c:916 [inline]
do_preadv+0x212/0x350 fs/read_write.c:1008
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f13cb08c169
RSP: 002b:00007f13c27fe168 EFLAGS: 00000246 ORIG_RAX: 0000000000000147
RAX: ffffffffffffffda RBX: 00007f13cb1ac050 RCX: 00007f13cb08c169
RDX: 0000000000000001 RSI: 0000000020000100 RDI: 0000000000000006
RBP: 00007f13cb0e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe7d78f44f R14: 00007f13c27fe300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8cf25570 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8cf25d70 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/28:
#0: ffffffff8cf253a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by syslogd/4410:
#0: ffff8880b993be98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:539
2 locks held by getty/4737:
#0: ffff88814a6d3098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2177
3 locks held by kworker/u4:6/5200:
#0: ffff888145004138 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363
#1: ffffc9000537fd20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365
#2: ffff88802a7700e0 (&type->s_umount_key#59){++++}-{3:3}, at: trylock_super+0x1f/0xf0 fs/super.c:414
1 lock held by syz-executor.5/10266:
#0: ffff8880369e0598 (&sb->s_type->i_mutex_key#24){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:768 [inline]
#0: ffff8880369e0598 (&sb->s_type->i_mutex_key#24){++++}-{3:3}, at: btrfs_inode_lock+0x60/0xd0 fs/btrfs/inode.c:169
1 lock held by syz-executor.5/10315:
#0: ffff8880369e0598 (&sb->s_type->i_mutex_key#24){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:768 [inline]
#0: ffff8880369e0598 (&sb->s_type->i_mutex_key#24){++++}-{3:3}, at: btrfs_inode_lock+0x60/0xd0 fs/btrfs/inode.c:169
2 locks held by syz-executor.2/10577:
#0: ffff88802a7700e0 (&type->s_umount_key#59){++++}-{3:3}, at: iterate_supers+0xb0/0x1e0 fs/super.c:743
#1: ffff88802a7727d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:364 [inline]
#1: ffff88802a7727d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x278/0xab0 fs/fs-writeback.c:2725
2 locks held by syz-executor.2/10746:
#0: ffff88802a7700e0 (&type->s_umount_key#59){++++}-{3:3}, at: iterate_supers+0xb0/0x1e0 fs/super.c:743
#1: ffff88802a7727d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:364 [inline]
#1: ffff88802a7727d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x278/0xab0 fs/fs-writeback.c:2725
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc6-syzkaller-00016-g0d3eb744aed4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Call Trace:
__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+0x187/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xec2/0xf00 kernel/hung_task.c:379
kthread+0x270/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4417 Comm: klogd Not tainted 6.3.0-rc6-syzkaller-00016-g0d3eb744aed4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
RIP: 0010:get_current arch/x86/include/asm/current.h:41 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:235 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x8/0x90 kernel/kcov.c:304
Code: 00 00 00 48 89 44 0a 10 48 89 74 0a 18 4c 89 44 0a 20 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 f3 0f 1e fa 4c 8b 04 24 <65> 48 8b 15 e0 47 79 7e 65 8b 05 e1 47 79 7e a9 00 01 ff 00 74 10
RSP: 0018:ffffc9000634f6c0 EFLAGS: 00000203
RAX: 00000000000cec42 RBX: 000000000000000e RCX: ffff88807e02ba80
RDX: ffff88807e02ba80 RSI: 000000000000000e RDI: 0000000000000064
RBP: 00000000000cec42 R08: ffffffff8a992408 R09: ffffc9000634f780
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000002115
R13: dffffc0000000000 R14: ffffc9000634f780 R15: ffffc9000634fbaa
FS: 00007ff7489ff800(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005585295fc600 CR3: 00000000291e8000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
put_dec_trunc8+0x58/0x330 lib/vsprintf.c:230
number+0x337/0xf90 lib/vsprintf.c:509
vsnprintf+0x153d/0x1d80 lib/vsprintf.c:2862
sprintf+0xda/0x120 lib/vsprintf.c:3000
print_time kernel/printk/printk.c:1336 [inline]
info_print_prefix+0x16b/0x300 kernel/printk/printk.c:1362
record_print_text kernel/printk/printk.c:1411 [inline]
syslog_print+0x4b7/0x9b0 kernel/printk/printk.c:1622
do_syslog+0x88d/0x980 kernel/printk/printk.c:1741
__do_sys_syslog kernel/printk/printk.c:1833 [inline]
__se_sys_syslog kernel/printk/printk.c:1831 [inline]
__x64_sys_syslog+0x7c/0x90 kernel/printk/printk.c:1831
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7ff748b9a8b7
Code: 73 01 c3 48 8b 0d c1 05 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 91 05 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffdcaa5c9f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000067
RAX: ffffffffffffffda RBX: 00007ff748d27490 RCX: 00007ff748b9a8b7
RDX: 00000000000003ff RSI: 00007ff748d27490 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000007 R09: 000055fa4c723380
R10: 0000000000004000 R11: 0000000000000206 R12: 00007ff748d27490
R13: 00007ff748d27887 R14: 00007ff748d27887 R15: 0000000000000000