devpts: called with bogus options
=============================
WARNING: suspicious RCU usage
4.15.0-rc8+ #1 Not tainted
-----------------------------
./include/linux/rcupdate.h:302 Illegal context switch in RCU read-side critical section!
other info that might help us debug this:
rcu_scheduler_active = 2, debug_locks = 1
1 lock held by syz-executor4/17586:
#0: (rcu_read_lock){....}, at: [<00000000ddd914c2>] map_get_next_key kernel/bpf/syscall.c:836 [inline]
#0: (rcu_read_lock){....}, at: [<00000000ddd914c2>] SYSC_bpf kernel/bpf/syscall.c:1881 [inline]
#0: (rcu_read_lock){....}, at: [<00000000ddd914c2>] SyS_bpf+0x1105/0x4860 kernel/bpf/syscall.c:1846
stack backtrace:
CPU: 1 PID: 17586 Comm: syz-executor4 Not tainted 4.15.0-rc8+ #1
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+0x194/0x257 lib/dump_stack.c:53
lockdep_rcu_suspicious+0x123/0x170 kernel/locking/lockdep.c:4585
rcu_preempt_sleep_check include/linux/rcupdate.h:301 [inline]
___might_sleep+0x385/0x470 kernel/sched/core.c:6025
__might_sleep+0x95/0x190 kernel/sched/core.c:6013
slab_pre_alloc_hook mm/slab.h:419 [inline]
slab_alloc mm/slab.c:3368 [inline]
__do_kmalloc mm/slab.c:3706 [inline]
__kmalloc+0x2c5/0x760 mm/slab.c:3717
kmalloc include/linux/slab.h:504 [inline]
trie_get_next_key+0x517/0xf10 kernel/bpf/lpm_trie.c:626
map_get_next_key kernel/bpf/syscall.c:842 [inline]
SYSC_bpf kernel/bpf/syscall.c:1881 [inline]
SyS_bpf+0x11b4/0x4860 kernel/bpf/syscall.c:1846
entry_SYSCALL_64_fastpath+0x29/0xa0
RIP: 0033:0x452ef9
RSP: 002b:00007fc4c867ec58 EFLAGS: 00000212 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ef9
RDX: 0000000000000018 RSI: 0000000020013fe8 RDI: 0000000000000004
RBP: 00000000000003d6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4cb0
R13: 00000000ffffffff R14: 00007fc4c867f6d4 R15: 0000000000000000
BUG: sleeping function called from invalid context at mm/slab.h:419
in_atomic(): 1, irqs_disabled(): 0, pid: 17586, name: syz-executor4
1 lock held by syz-executor4/17586:
#0: (rcu_read_lock){....}, at: [<00000000ddd914c2>] map_get_next_key kernel/bpf/syscall.c:836 [inline]
#0: (rcu_read_lock){....}, at: [<00000000ddd914c2>] SYSC_bpf kernel/bpf/syscall.c:1881 [inline]
#0: (rcu_read_lock){....}, at: [<00000000ddd914c2>] SyS_bpf+0x1105/0x4860 kernel/bpf/syscall.c:1846
CPU: 1 PID: 17586 Comm: syz-executor4 Not tainted 4.15.0-rc8+ #1
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+0x194/0x257 lib/dump_stack.c:53
___might_sleep+0x2b2/0x470 kernel/sched/core.c:6060
__might_sleep+0x95/0x190 kernel/sched/core.c:6013
slab_pre_alloc_hook mm/slab.h:419 [inline]
slab_alloc mm/slab.c:3368 [inline]
__do_kmalloc mm/slab.c:3706 [inline]
__kmalloc+0x2c5/0x760 mm/slab.c:3717
kmalloc include/linux/slab.h:504 [inline]
trie_get_next_key+0x517/0xf10 kernel/bpf/lpm_trie.c:626
map_get_next_key kernel/bpf/syscall.c:842 [inline]
SYSC_bpf kernel/bpf/syscall.c:1881 [inline]
SyS_bpf+0x11b4/0x4860 kernel/bpf/syscall.c:1846
entry_SYSCALL_64_fastpath+0x29/0xa0
RIP: 0033:0x452ef9
RSP: 002b:00007fc4c867ec58 EFLAGS: 00000212 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ef9
RDX: 0000000000000018 RSI: 0000000020013fe8 RDI: 0000000000000004
RBP: 00000000000003d6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4cb0
R13: 00000000ffffffff R14: 00007fc4c867f6d4 R15: 0000000000000000
overlayfs: unrecognized mount option "�E`-YES8�Q�
m8EX�
V�[og����P���US��NC��� ����c�d�w��k�"���C��D�V�5óG��KE= �f�XN�K��K���{ ��[#\" or missing value
overlayfs: unrecognized mount option "z�" or missing value
can: request_module (can-proto-0) failed.
autofs4:pid:18133:autofs4_fill_super: called with bogus options
autofs4:pid:18148:autofs4_fill_super: called with bogus options
audit: type=1400 audit(1516661123.684:23): avc: denied { write } for pid=18222 comm="syz-executor2" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:unlabeled_t:s0 tclass=socket permissive=1
EXT4-fs (sda1): re-mounted. Opts:
EXT4-fs (sda1): re-mounted. Opts:
EXT4-fs (sda1): Unrecognized mount option "CC B�p!l�0%�_nR�h�s�D�X���(�ն���" or missing value
tmpfs: No value for mount option '|� ��6D:'
EXT4-fs (sda1): Unrecognized mount option "CC B�p!l�0%�_nR�h�s�D�X���(�ն���" or missing value
tmpfs: No value for mount option '|� ��6D:'
overlayfs: unrecognized mount option "�E`-YES8�Q�
m8EX�
V�[og����P���US��NC��� ����c�d�w��k�"���C��D�V�5óG��KE= �f�XN�K��K���{ ��[#\" or missing value
can: request_module (can-proto-0) failed.
can: request_module (can-proto-0) failed.
cgroup: cgroup2: unknown option ""
devpts: called with bogus options
devpts: called with bogus options