device veth2334 left promiscuous mode
bond354 (unregistering): Released all slaves
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'.
device bond354 entered promiscuous mode
bond354 (unregistering): Released all slaves
INFO: task syz-executor.2:27859 blocked for more than 140 seconds.
Not tainted 4.19.119-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2 D28416 27859 6653 0x00000004
Call Trace:
schedule+0x8d/0x1b0 kernel/sched/core.c:3559
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3617
__mutex_lock_common kernel/locking/mutex.c:1002 [inline]
__mutex_lock+0x726/0x1300 kernel/locking/mutex.c:1072
fb_open+0xd3/0x430 drivers/video/fbdev/core/fbmem.c:1457
chrdev_open+0x219/0x5c0 fs/char_dev.c:423
do_dentry_open+0x4a8/0x1160 fs/open.c:796
do_last fs/namei.c:3421 [inline]
path_openat+0x1031/0x4200 fs/namei.c:3537
do_filp_open+0x1a1/0x280 fs/namei.c:3567
do_sys_open+0x3c0/0x500 fs/open.c:1085
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c829
Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f601be6ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00000000004f71c0 RCX: 000000000045c829
RDX: 0000000000000000 RSI: 0000000020000180 RDI: ffffffffffffff9c
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000079a R14: 00000000004ca4cf R15: 00007f601be6b6d4
Showing all locks held in the system:
1 lock held by khungtaskd/1079:
#0: 000000007dbef861 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4440
1 lock held by in:imklog/6128:
#0: 000000002d02b772 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xe3/0x100 fs/file.c:767
2 locks held by agetty/6140:
#0: 00000000a1dca9da (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 00000000ef047866 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2154
5 locks held by kworker/u4:1/24336:
1 lock held by syz-executor.2/27859:
#0: 0000000099040249 (&fb_info->lock){+.+.}, at: fb_open+0xd3/0x430 drivers/video/fbdev/core/fbmem.c:1457
3 locks held by syz-executor.2/27864:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 1079 Comm: khungtaskd Not tainted 4.19.119-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x188/0x20d lib/dump_stack.c:118
nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1a6/0x1eb lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
watchdog+0x962/0xe40 kernel/hung_task.c:287
kthread+0x34a/0x420 kernel/kthread.c:246
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 24336 Comm: kworker/u4:1 Not tainted 4.19.119-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: krdsd rds_connect_worker
RIP: 0010:debug_lockdep_rcu_enabled.part.0+0x33/0x50 kernel/rcu/update.c:254
Code: df 53 65 48 8b 1c 25 40 ee 01 00 48 8d bb 84 08 00 00 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 0f 8b 93 84 08 00 00 31 c0 5b 85 d2 0f 94 c0 c3 e8 75 2c
RSP: 0018:ffff88804b71f958 EFLAGS: 00000002
RAX: 0000000000000007 RBX: ffff88804c7f0580 RCX: 1ffffffff1238a88
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88804c7f0e04
RBP: ffff88801dd4d4f8 R08: 0000000000000001 R09: 0000000000000000
R10: fffff52000207fa8 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c42a80d018 CR3: 00000002129bd000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
trace_lock_acquire include/trace/events/lock.h:13 [inline]
lock_acquire+0x2f0/0x400 kernel/locking/lockdep.c:3906
__raw_read_lock_bh include/linux/rwlock_api_smp.h:176 [inline]
_raw_read_lock_bh+0x32/0x40 kernel/locking/spinlock.c:240
sock_i_uid+0x1b/0xa0 net/core/sock.c:1915
inet_csk_bind_conflict+0xba/0x580 net/ipv4/inet_connection_sock.c:139
inet_csk_find_open_port net/ipv4/inet_connection_sock.c:223 [inline]
inet_csk_get_port+0xe69/0x1d40 net/ipv4/inet_connection_sock.c:298
__inet_bind+0x5ba/0xbe0 net/ipv4/af_inet.c:524
inet_bind+0xf3/0x160 net/ipv4/af_inet.c:453
rds_tcp_conn_path_connect+0x536/0x880 net/rds/tcp_connect.c:144
rds_connect_worker+0x194/0x2b0 net/rds/threads.c:175
process_one_work+0x91f/0x1640 kernel/workqueue.c:2155
worker_thread+0x96/0xe20 kernel/workqueue.c:2298
kthread+0x34a/0x420 kernel/kthread.c:246
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415