EXT4-fs (loop3): ext4_check_descriptors: Block bitmap for group 0 not in group (block 0)!
EXT4-fs (loop3): group descriptors corrupted!
kauditd_printk_skb: 29 callbacks suppressed
audit: type=1400 audit(1556043421.105:656): avc: denied { map } for pid=10227 comm="sh" path="/bin/dash" dev="sda1" ino=1473 scontext=system_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1
INFO: task syz-executor.0:10154 blocked for more than 140 seconds.
Not tainted 4.14.113 #3
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0 D28584 10154 7147 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2807 [inline]
__schedule+0x7be/0x1cf0 kernel/sched/core.c:3383
schedule+0x92/0x1c0 kernel/sched/core.c:3427
schedule_timeout+0x93d/0xe10 kernel/time/timer.c:1721
do_wait_for_common kernel/sched/completion.c:91 [inline]
__wait_for_common kernel/sched/completion.c:112 [inline]
wait_for_common kernel/sched/completion.c:123 [inline]
wait_for_completion+0x27c/0x420 kernel/sched/completion.c:144
flush_work+0x3eb/0x730 kernel/workqueue.c:2885
__cancel_work_timer+0x2f0/0x480 kernel/workqueue.c:2956
cancel_work_sync+0x18/0x20 kernel/workqueue.c:2992
p9_conn_destroy net/9p/trans_fd.c:872 [inline]
p9_fd_close+0x2a1/0x450 net/9p/trans_fd.c:899
p9_client_create+0x793/0x1130 net/9p/client.c:1095
v9fs_session_init+0x1dc/0x1630 fs/9p/v9fs.c:422
v9fs_mount+0x7d/0x870 fs/9p/vfs_super.c:135
mount_fs+0x9d/0x2a7 fs/super.c:1237
vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046
vfs_kern_mount fs/namespace.c:1036 [inline]
do_new_mount fs/namespace.c:2549 [inline]
do_mount+0x417/0x27d0 fs/namespace.c:2879
SYSC_mount fs/namespace.c:3095 [inline]
SyS_mount+0xab/0x120 fs/namespace.c:3072
do_syscall_64+0x1eb/0x630 arch/x86/entry/common.c:289
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x458c29
RSP: 002b:00007fb801916c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000458c29
RDX: 0000000020000100 RSI: 00000000200000c0 RDI: 0000000000000000
RBP: 000000000073bf00 R08: 0000000020000140 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb8019176d4
R13: 00000000004c4c14 R14: 00000000004d88a0 R15: 00000000ffffffff
Showing all locks held in the system:
1 lock held by khungtaskd/1008:
#0: (tasklist_lock){.+.+}, at: [<ffffffff81486f98>] debug_show_all_locks+0x7f/0x21f kernel/locking/lockdep.c:4544
1 lock held by rsyslogd/6980:
#0: (&f->f_pos_lock){+.+.}, at: [<ffffffff81942cbb>] __fdget_pos+0xab/0xd0 fs/file.c:769
2 locks held by getty/7102:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff861b0323>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff8310c666>] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156
2 locks held by getty/7103:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff861b0323>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff8310c666>] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156
2 locks held by getty/7104:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff861b0323>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff8310c666>] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156
2 locks held by getty/7105:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff861b0323>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff8310c666>] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156
2 locks held by getty/7106:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff861b0323>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff8310c666>] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156
2 locks held by getty/7107:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff861b0323>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff8310c666>] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156
2 locks held by getty/7108:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff861b0323>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff8310c666>] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156
2 locks held by kworker/1:3/7163:
#0: ("events"){+.+.}, at: [<ffffffff813d130e>] work_static include/linux/workqueue.h:199 [inline]
#0: ("events"){+.+.}, at: [<ffffffff813d130e>] set_work_data kernel/workqueue.c:619 [inline]
#0: ("events"){+.+.}, at: [<ffffffff813d130e>] set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline]
#0: ("events"){+.+.}, at: [<ffffffff813d130e>] process_one_work+0x76e/0x1610 kernel/workqueue.c:2085
#1: ((&m->rq)){+.+.}, at: [<ffffffff813d134b>] process_one_work+0x7ab/0x1610 kernel/workqueue.c:2089
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1008 Comm: khungtaskd Not tainted 4.14.113 #3
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x138/0x19c lib/dump_stack.c:53
nmi_cpu_backtrace.cold+0x57/0x94 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x141/0x189 lib/nmi_backtrace.c:62
arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline]
watchdog+0x5e7/0xb90 kernel/hung_task.c:274
kthread+0x31c/0x430 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: 29 Comm: kworker/u4:2 Not tainted 4.14.113 #3
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
task: ffff8880a9ed4000 task.stack: ffff8880a9ee0000
RIP: 0010:__read_once_size include/linux/compiler.h:186 [inline]
RIP: 0010:atomic_read arch/x86/include/asm/atomic.h:27 [inline]
RIP: 0010:rcu_dynticks_curr_cpu_in_eqs kernel/rcu/tree.c:362 [inline]
RIP: 0010:rcu_is_watching+0x5e/0xb0 kernel/rcu/tree.c:1130
RSP: 0018:ffff8880a9ee7cd0 EFLAGS: 00000a03
RAX: dffffc0000000000 RBX: ffff8880aee23940 RCX: 1ffffffff0ea4fa4
RDX: 0000000000000000 RSI: ffffffff869d1b00 RDI: ffff8880aee2394c
RBP: ffff8880a9ee7ce0 R08: 0000000000000000 R09: ffff8880a9ed48f0
R10: ffff8880a9ed48d0 R11: ffff8880a9ed4000 R12: ffff88806ac7e9f8
R13: 00000000000000ba R14: 0000000000000000 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880aee00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff24424ff0 CR3: 000000008f7bb000 CR4: 00000000001406f0
Call Trace:
rcu_read_unlock include/linux/rcupdate.h:683 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:420 [inline]
batadv_nc_worker+0x40a/0x6d0 net/batman-adv/network-coding.c:726
process_one_work+0x868/0x1610 kernel/workqueue.c:2114
worker_thread+0x5d9/0x1050 kernel/workqueue.c:2248
kthread+0x31c/0x430 kernel/kthread.c:232
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:402
Code: 48 c1 e9 03 80 3c 11 00 75 5d 48 03 1c c5 20 7d 52 87 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 0c 48 89 fa 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 24 8b 43 0c d1