random: sshd: uninitialized urandom read (32 bytes read)
audit: type=1400 audit(1538547110.178:7): avc: denied { map } for pid=1827 comm="syz-executor844" path="/root/syz-executor844264495" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
INFO: task kworker/u4:1:64 blocked for more than 140 seconds.
Not tainted 4.14.73+ #14
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/u4:1 D24960 64 2 0x80000000
Workqueue: writeback wb_workfn (flush-8:0)
Call Trace:
schedule+0x7f/0x1b0 kernel/sched/core.c:3490
wait_transaction_locked+0x1a1/0x220 fs/jbd2/transaction.c:164
add_transaction_credits+0x403/0x970 fs/jbd2/transaction.c:192
start_this_handle+0x368/0xfc0 fs/jbd2/transaction.c:362
jbd2__journal_start+0x30a/0x8b0 fs/jbd2/transaction.c:444
__ext4_journal_start_sb+0x109/0x460 fs/ext4/ext4_jbd2.c:81
__ext4_journal_start fs/ext4/ext4_jbd2.h:314 [inline]
ext4_writepages+0x105e/0x3040 fs/ext4/inode.c:2867
do_writepages+0xe0/0x270 mm/page-writeback.c:2341
__writeback_single_inode+0xd8/0x1020 fs/fs-writeback.c:1320
writeback_sb_inodes+0x468/0xcd0 fs/fs-writeback.c:1584
__writeback_inodes_wb+0xf8/0x1e0 fs/fs-writeback.c:1653
wb_writeback+0x4ee/0xb90 fs/fs-writeback.c:1762
wb_check_old_data_flush fs/fs-writeback.c:1875 [inline]
wb_do_writeback fs/fs-writeback.c:1899 [inline]
wb_workfn+0x85d/0xe00 fs/fs-writeback.c:1928
process_one_work+0x86e/0x15c0 kernel/workqueue.c:2114
worker_thread+0xdc/0x1000 kernel/workqueue.c:2248
kthread+0x348/0x420 kernel/kthread.c:232
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:402
INFO: task jbd2/sda1-8:75 blocked for more than 140 seconds.
Not tainted 4.14.73+ #14
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
jbd2/sda1-8 D27520 75 2 0x80000000
Call Trace:
schedule+0x7f/0x1b0 kernel/sched/core.c:3490
jbd2_journal_commit_transaction+0x724/0x648c fs/jbd2/commit.c:437
kjournald2+0x244/0x820 fs/jbd2/journal.c:233
kthread+0x348/0x420 kernel/kthread.c:232
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:402
INFO: task restorecond:1710 blocked for more than 140 seconds.
Not tainted 4.14.73+ #14
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
restorecond D28128 1710 1 0x00000000
Call Trace:
schedule+0x7f/0x1b0 kernel/sched/core.c:3490
__rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:565 [inline]
rwsem_down_write_failed+0x390/0x730 kernel/locking/rwsem-xadd.c:594
call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:105
__down_write arch/x86/include/asm/rwsem.h:126 [inline]
down_write+0x4f/0x90 kernel/locking/rwsem.c:56
inode_lock include/linux/fs.h:713 [inline]
vfs_setxattr+0x89/0xe0 fs/xattr.c:219
setxattr+0x1c6/0x2b0 fs/xattr.c:453
path_setxattr+0x13c/0x160 fs/xattr.c:472
SYSC_lsetxattr fs/xattr.c:494 [inline]
SyS_lsetxattr+0x33/0x40 fs/xattr.c:490
do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x7f63ba69dffa
RSP: 002b:00007ffcbb815a48 EFLAGS: 00000206 ORIG_RAX: 00000000000000bd
RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 00007f63ba69dffa
RDX: 000056033fa6daf0 RSI: 00007f63bb0c9f69 RDI: 000056033f6d52e0
RBP: 000056033f6d52e0 R08: 0000000000000000 R09: 73753a725f746365
R10: 0000000000000025 R11: 0000000000000206 R12: 000056033f6d6520
R13: 000056033f6d63f0 R14: 00007ffcbb815a90 R15: 0000000000000000
INFO: task init:1828 blocked for more than 140 seconds.
Not tainted 4.14.73+ #14
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
init D28760 1828 1 0x00000000
Call Trace:
schedule+0x7f/0x1b0 kernel/sched/core.c:3490
wait_transaction_locked+0x1a1/0x220 fs/jbd2/transaction.c:164
add_transaction_credits+0x403/0x970 fs/jbd2/transaction.c:192
start_this_handle+0x368/0xfc0 fs/jbd2/transaction.c:362
jbd2__journal_start+0x30a/0x8b0 fs/jbd2/transaction.c:444
__ext4_journal_start_sb+0x109/0x460 fs/ext4/ext4_jbd2.c:81
__ext4_journal_start fs/ext4/ext4_jbd2.h:314 [inline]
ext4_dirty_inode+0x4f/0xa0 fs/ext4/inode.c:5938
__mark_inode_dirty+0x108/0x1060 fs/fs-writeback.c:2097
generic_update_time+0x1a5/0x270 fs/inode.c:1650
update_time fs/inode.c:1666 [inline]
file_update_time+0x262/0x390 fs/inode.c:1877
__generic_file_write_iter+0x1bc/0x540 mm/filemap.c:3112
ext4_file_write_iter+0x4f6/0xe20 fs/ext4/file.c:264
call_write_iter include/linux/fs.h:1782 [inline]
new_sync_write fs/read_write.c:471 [inline]
__vfs_write+0x417/0x5c0 fs/read_write.c:484
vfs_write+0x17f/0x4d0 fs/read_write.c:546
SYSC_write fs/read_write.c:593 [inline]
SyS_write+0xc2/0x1a0 fs/read_write.c:585
do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x7fd2f185f370
RSP: 002b:00007ffdb47fcd18 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 00007fd2f185f370
RDX: 0000000000000180 RSI: 00007ffdb47fd070 RDI: 0000000000000004
RBP: 0000000000000004 R08: 00007ffdb47fce70 R09: 0000000080000000
R10: 0000000000000008 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00007ffdb47fd070 R14: 0000000000011880 R15: 00007ffdb47fcd30
Showing all locks held in the system:
1 lock held by khungtaskd/23:
#0: (tasklist_lock){.+.+}, at: [<ffffffff96601ef7>] debug_show_all_locks+0x74/0x20f kernel/locking/lockdep.c:4541
4 locks held by kworker/u4:1/64:
#0: ("writeback"){+.+.}, at: [<ffffffff965275d7>] process_one_work+0x787/0x15c0 kernel/workqueue.c:2085
#1: ((&(&wb->dwork)->work)){+.+.}, at: [<ffffffff9652760f>] process_one_work+0x7bf/0x15c0 kernel/workqueue.c:2089
#2: (&type->s_umount_key#34){++++}, at: [<ffffffff96962aba>] trylock_super+0x1a/0xe0 fs/super.c:402
#3: (&sbi->s_journal_flag_rwsem){.+.+}, at: [<ffffffff96853910>] do_writepages+0xe0/0x270 mm/page-writeback.c:2341
3 locks held by rs:main Q:Reg/1628:
#0: (&f->f_pos_lock){+.+.}, at: [<ffffffff969bd322>] __fdget_pos+0xa2/0xc0 fs/file.c:768
#1: (sb_writers#4){.+.+}, at: [<ffffffff9695bc17>] file_start_write include/linux/fs.h:2722 [inline]
#1: (sb_writers#4){.+.+}, at: [<ffffffff9695bc17>] vfs_write+0x3d7/0x4d0 fs/read_write.c:545
#2: (&sb->s_type->i_mutex_key#9){+.+.}, at: [<ffffffff96b15149>] inode_trylock include/linux/fs.h:733 [inline]
#2: (&sb->s_type->i_mutex_key#9){+.+.}, at: [<ffffffff96b15149>] ext4_file_write_iter+0x1b9/0xe20 fs/ext4/file.c:230
2 locks held by restorecond/1710:
#0: (sb_writers#4){.+.+}, at: [<ffffffff969c55aa>] sb_start_write include/linux/fs.h:1543 [inline]
#0: (sb_writers#4){.+.+}, at: [<ffffffff969c55aa>] mnt_want_write+0x3a/0xa0 fs/namespace.c:387
#1: (&sb->s_type->i_mutex_key#9){+.+.}, at: [<ffffffff969d6339>] inode_lock include/linux/fs.h:713 [inline]
#1: (&sb->s_type->i_mutex_key#9){+.+.}, at: [<ffffffff969d6339>] vfs_setxattr+0x89/0xe0 fs/xattr.c:219
2 locks held by getty/1758:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff9712ec80>] tty_ldisc_ref_wait+0x20/0x80 drivers/tty/tty_ldisc.c:275
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff9712a1ff>] n_tty_read+0x1ff/0x15e0 drivers/tty/n_tty.c:2142
2 locks held by init/1828:
#0: (sb_writers#4){.+.+}, at: [<ffffffff9695bc17>] file_start_write include/linux/fs.h:2722 [inline]
#0: (sb_writers#4){.+.+}, at: [<ffffffff9695bc17>] vfs_write+0x3d7/0x4d0 fs/read_write.c:545
#1: (&sb->s_type->i_mutex_key#9){+.+.}, at: [<ffffffff96b15149>] inode_trylock include/linux/fs.h:733 [inline]
#1: (&sb->s_type->i_mutex_key#9){+.+.}, at: [<ffffffff96b15149>] ext4_file_write_iter+0x1b9/0xe20 fs/ext4/file.c:230
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 23 Comm: khungtaskd Not tainted 4.14.73+ #14
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0xb9/0x11b lib/dump_stack.c:53
nmi_cpu_backtrace.cold.0+0x47/0x85 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x121/0x146 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:138 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:196 [inline]
watchdog+0x574/0xa70 kernel/hung_task.c:252
kthread+0x348/0x420 kernel/kthread.c:232
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:402
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 1827 Comm: syz-executor844 Not tainted 4.14.73+ #14
task: ffff8801ce3f4680 task.stack: ffff8801ce060000
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:23 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x15/0x60 kernel/kcov.c:65
RSP: 0018:ffff8801ce067678 EFLAGS: 00000282
RAX: ffff8801ce3f4680 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000080000000 RSI: 000000005636b642 RDI: ffff8801c3861032
RBP: 0000000000000001 R08: 00000000e0dc696d R09: 0000000000000000
R10: ffff8801ce3f4fa0 R11: 0000000000000001 R12: ffff8801ce0678f8
R13: ffff8801c3861030 R14: 0000000000000000 R15: ffff8801d0629810
FS: 0000000000e18880(0000) GS:ffff8801dba00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd2f186b330 CR3: 00000001ce230001 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ext4_ext_binsearch fs/ext4/extents.c:819 [inline]
ext4_find_extent+0x49b/0x980 fs/ext4/extents.c:938
get_ext_path fs/ext4/move_extent.c:39 [inline]
mext_check_coverage.constprop.2+0x234/0x3c0 fs/ext4/move_extent.c:106
move_extent_per_page fs/ext4/move_extent.c:333 [inline]
ext4_move_extents+0x17dc/0x2a10 fs/ext4/move_extent.c:681
ext4_ioctl+0x275c/0x35e0 fs/ext4/ioctl.c:765
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:500 [inline]
do_vfs_ioctl+0x1a0/0x1030 fs/ioctl.c:684
SYSC_ioctl fs/ioctl.c:701 [inline]
SyS_ioctl+0x7e/0xb0 fs/ioctl.c:692
do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x440169
RSP: 002b:00007ffe7b446ba8 EFLAGS: 00000217 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440169
RDX: 0000000020000040 RSI: 00000000c028660f RDI: 0000000000000003
RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8
R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004019f0
R13: 0000000000401a80 R14: 0000000000000000 R15: 0000000000000000
Code: 21 00 e9 2c fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 c0 de 01 00 48 85 c0 74 1a 65 8b 15 7b 24 91 69 <81> e2 00 01 1f 00 75 0b 8b 90 a8 11 00 00 83 fa 01 74 01 c3 48