protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
INFO: task syz-executor.1:22840 blocked for more than 140 seconds.
Not tainted 4.14.160-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1 D28848 22840 18722 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x7b8/0x1cd0 kernel/sched/core.c:3384
schedule+0x92/0x1c0 kernel/sched/core.c:3428
schedule_timeout+0x93b/0xe10 kernel/time/timer.c:1723
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:2891
__cancel_work_timer+0x2f0/0x480 kernel/workqueue.c:2962
cancel_work_sync+0x18/0x20 kernel/workqueue.c:2998
p9_conn_destroy net/9p/trans_fd.c:872 [inline]
p9_fd_close+0x2a1/0x450 net/9p/trans_fd.c:899
p9_client_create+0x787/0x1120 net/9p/client.c:1095
v9fs_session_init+0x1dc/0x1620 fs/9p/v9fs.c:422
v9fs_mount+0x7d/0x870 fs/9p/vfs_super.c:135
mount_fs+0x97/0x2a1 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
net_ratelimit: 26 callbacks suppressed
protocol 88fb is buggy, dev hsr_slave_0
do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_0
entry_SYSCALL_64_after_hwframe+0x42/0xb7
protocol 88fb is buggy, dev hsr_slave_1
RIP: 0033:0x45a919
RSP: 002b:00007f3fb4adcc78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000045a919
RDX: 0000000020000180 RSI: 0000000020000140 RDI: 0000000000000000
RBP: 000000000075bfc8 R08: 00000000200001c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3fb4add6d4
protocol 88fb is buggy, dev hsr_slave_0
R13: 00000000004c7c9b R14: 00000000004dec40 R15: 00000000ffffffff
protocol 88fb is buggy, dev hsr_slave_1
Showing all locks held in the system:
2 locks held by kworker/0:1/24:
#0: ("events"){+.+.}, at: [<ffffffff813d581e>] work_static include/linux/workqueue.h:199 [inline]
#0: ("events"){+.+.}, at: [<ffffffff813d581e>] set_work_data kernel/workqueue.c:619 [inline]
#0: ("events"){+.+.}, at: [<ffffffff813d581e>] set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline]
#0: ("events"){+.+.}, at: [<ffffffff813d581e>] process_one_work+0x76e/0x1600 kernel/workqueue.c:2085
#1: ((&m->rq)){+.+.}, at: [<ffffffff813d585b>] process_one_work+0x7ab/0x1600 kernel/workqueue.c:2089
1 lock held by khungtaskd/1044:
#0: (tasklist_lock){.+.+}, at: [<ffffffff8148c8d8>] debug_show_all_locks+0x7f/0x21f kernel/locking/lockdep.c:4544
2 locks held by getty/7118:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff8664f823>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff83491c76>] n_tty_read+0x1e6/0x17d0 drivers/tty/n_tty.c:2156
2 locks held by getty/7119:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff8664f823>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff83491c76>] n_tty_read+0x1e6/0x17d0 drivers/tty/n_tty.c:2156
2 locks held by getty/7120:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff8664f823>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff83491c76>] n_tty_read+0x1e6/0x17d0 drivers/tty/n_tty.c:2156
2 locks held by getty/7121:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff8664f823>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff83491c76>] n_tty_read+0x1e6/0x17d0 drivers/tty/n_tty.c:2156
2 locks held by getty/7122:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff8664f823>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff83491c76>] n_tty_read+0x1e6/0x17d0 drivers/tty/n_tty.c:2156
2 locks held by getty/7123:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff8664f823>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff83491c76>] n_tty_read+0x1e6/0x17d0 drivers/tty/n_tty.c:2156
2 locks held by getty/7124:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff8664f823>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff83491c76>] n_tty_read+0x1e6/0x17d0 drivers/tty/n_tty.c:2156
2 locks held by syz-executor.5/17957:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff8664f823>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff83491c76>] n_tty_read+0x1e6/0x17d0 drivers/tty/n_tty.c:2156
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 1044 Comm: khungtaskd Not tainted 4.14.160-syzkaller #0
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+0x142/0x197 lib/dump_stack.c:58
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+0x319/0x430 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 6996 Comm: rsyslogd Not tainted 4.14.160-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880942d4180 task.stack: ffff8880757b0000
RIP: 0010:__read_once_size include/linux/compiler.h:183 [inline]
RIP: 0010:lookup_chain_cache kernel/locking/lockdep.c:2357 [inline]
RIP: 0010:lookup_chain_cache_add kernel/locking/lockdep.c:2377 [inline]
RIP: 0010:validate_chain kernel/locking/lockdep.c:2431 [inline]
RIP: 0010:__lock_acquire+0xcc9/0x4620 kernel/locking/lockdep.c:3487
RSP: 0018:ffff8880757b78a0 EFLAGS: 00000046
RAX: dffffc0000000000 RBX: 0000000087741918 RCX: 0000000035aa65c2
RDX: 1ffffffff12addc1 RSI: ffff8880942d4a28 RDI: ffff8880942d4a49
RBP: ffff8880757b7a48 R08: 0000000000001e79 R09: ffffffff8956ee08
R10: ffff8880942d4a28 R11: ffff8880942d4180 R12: 0000000000000000
R13: 00000000d592f4ae R14: ffff8880942d4a00 R15: 42ebf44a1a258ca0
FS: 00007f1cecaf5700(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c42de00650 CR3: 0000000094f94000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x16f/0x430 kernel/locking/lockdep.c:3994
fs_reclaim_acquire.part.0+0x24/0x30 mm/page_alloc.c:3551
fs_reclaim_acquire+0x14/0x20 mm/page_alloc.c:3552
slab_pre_alloc_hook mm/slab.h:416 [inline]
slab_alloc mm/slab.c:3376 [inline]
kmem_cache_alloc_trace+0x2d/0x790 mm/slab.c:3616
kmalloc include/linux/slab.h:488 [inline]
syslog_print kernel/printk/printk.c:1303 [inline]
do_syslog kernel/printk/printk.c:1466 [inline]
do_syslog+0x559/0xb60 kernel/printk/printk.c:1440
kmsg_read+0x74/0xa0 fs/proc/kmsg.c:40
proc_reg_read+0xfa/0x170 fs/proc/inode.c:217
__vfs_read+0x105/0x6a0 fs/read_write.c:411
vfs_read+0x137/0x350 fs/read_write.c:447
SYSC_read fs/read_write.c:574 [inline]
SyS_read+0xfd/0x230 fs/read_write.c:567
do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x7f1cef5551fd
RSP: 002b:00007f1cecaf4e30 EFLAGS: 00000293 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000001578650 RCX: 00007f1cef5551fd
RDX: 0000000000000fff RSI: 00007f1cee3295a0 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000001563260 R09: 0000000000000000
R10: 2073692062663838 R11: 0000000000000293 R12: 000000000065e420
R13: 00007f1cecaf59c0 R14: 00007f1cefb9a040 R15: 0000000000000003
Code: b5 80 46 86 c8 61 48 b8 00 00 00 00 00 fc ff df 4d 0f af c7 49 c1 e8 31 4e 8d 0c c5 40 fa 55 89 4c 89 ca 48 c1 ea 03 80 3c 02 00 <0f> 85 20 2f 00 00 4a 8b 1c c5 40 fa 55 89 48 85 db 74 5d 48 83