=============================
WARNING: suspicious RCU usage
4.15.0+ #218 Not tainted
FAULT_FLAG_ALLOW_RETRY missing 30
-----------------------------
./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-executor6/8763:
#0: (rcu_read_lock){....}, at: [<000000006fac689f>] __rds_conn_create+0xe46/0x1b50 net/rds/connection.c:218
stack backtrace:
CPU: 0 PID: 8760 Comm: syz-executor4 Not tainted 4.15.0+ #218
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
handle_userfault+0xbd9/0x2500 fs/userfaultfd.c:430
do_anonymous_page mm/memory.c:3163 [inline]
handle_pte_fault mm/memory.c:3977 [inline]
__handle_mm_fault+0x32a3/0x3ce0 mm/memory.c:4103
handle_mm_fault+0x35c/0x970 mm/memory.c:4140
__do_page_fault+0x5c9/0xc90 arch/x86/mm/fault.c:1426
do_page_fault+0xee/0x730 arch/x86/mm/fault.c:1501
page_fault+0x2c/0x60 arch/x86/entry/entry_64.S:1155
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x20 arch/x86/lib/copy_user_64.S:180
RSP: 0018:ffff8801cca2fad0 EFLAGS: 00010246
RAX: ffffed0039945fa0 RBX: 0000000020012fc0 RCX: 0000000000000040
RDX: 0000000000000040 RSI: 0000000020012fc0 RDI: ffff8801cca2fcc0
RBP: ffff8801cca2fb00 R08: ffffed0039945fa0 R09: ffffed0039945fa0
R10: 0000000000000008 R11: ffffed0039945f9f R12: 0000000000000040
R13: ffff8801cca2fcc0 R14: 00007ffffffff000 R15: 0000000020013000
copy_from_user include/linux/uaccess.h:147 [inline]
do_io_submit+0x256/0x1520 fs/aio.c:1677
C_SYSC_io_submit fs/aio.c:1743 [inline]
compat_SyS_io_submit+0xe4/0x130 fs/aio.c:1728
do_syscall_32_irqs_on arch/x86/entry/common.c:330 [inline]
do_fast_syscall_32+0x3ee/0xfa1 arch/x86/entry/common.c:392
entry_SYSENTER_compat+0x54/0x63 arch/x86/entry/entry_64_compat.S:129
RIP: 0023:0xf7fe3c79
RSP: 002b:00000000f77df09c EFLAGS: 00000286 ORIG_RAX: 00000000000000f8
RAX: ffffffffffffffda RBX: 00000000f77be000 RCX: 0000000000000001
RDX: 0000000020003fe8 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 8763 Comm: syz-executor6 Not tainted 4.15.0+ #218
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:4592
rcu_preempt_sleep_check include/linux/rcupdate.h:301 [inline]
___might_sleep+0x385/0x470 kernel/sched/core.c:6093
__might_sleep+0x95/0x190 kernel/sched/core.c:6081
slab_pre_alloc_hook mm/slab.h:420 [inline]
slab_alloc mm/slab.c:3365 [inline]
kmem_cache_alloc_trace+0x299/0x740 mm/slab.c:3605
kmalloc include/linux/slab.h:512 [inline]
kzalloc include/linux/slab.h:701 [inline]
rds_loop_conn_alloc+0xc8/0x380 net/rds/loop.c:126
__rds_conn_create+0x112f/0x1b50 net/rds/connection.c:227
rds_conn_create_outgoing+0x3f/0x50 net/rds/connection.c:309
rds_sendmsg+0xda3/0x2390 net/rds/send.c:1126
sock_sendmsg_nosec net/socket.c:630 [inline]
sock_sendmsg+0xca/0x110 net/socket.c:640
___sys_sendmsg+0x767/0x8b0 net/socket.c:2046
__sys_sendmsg+0xe5/0x210 net/socket.c:2080
C_SYSC_sendmsg net/compat.c:739 [inline]
compat_SyS_sendmsg+0x2a/0x40 net/compat.c:737
do_syscall_32_irqs_on arch/x86/entry/common.c:330 [inline]
do_fast_syscall_32+0x3ee/0xfa1 arch/x86/entry/common.c:392
entry_SYSENTER_compat+0x54/0x63 arch/x86/entry/entry_64_compat.S:129
RIP: 0023:0xf7f67c79
RSP: 002b:00000000f774209c EFLAGS: 00000286 ORIG_RAX: 0000000000000172
RAX: ffffffffffffffda RBX: 0000000000000013 RCX: 0000000020159fc8
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
BUG: sleeping function called from invalid context at mm/slab.h:420
in_atomic(): 1, irqs_disabled(): 0, pid: 8763, name: syz-executor6
1 lock held by syz-executor6/8763:
#0: (rcu_read_lock){....}, at: [<000000006fac689f>] __rds_conn_create+0xe46/0x1b50 net/rds/connection.c:218
CPU: 1 PID: 8763 Comm: syz-executor6 Not tainted 4.15.0+ #218
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:6128
__might_sleep+0x95/0x190 kernel/sched/core.c:6081
slab_pre_alloc_hook mm/slab.h:420 [inline]
slab_alloc mm/slab.c:3365 [inline]
kmem_cache_alloc_trace+0x299/0x740 mm/slab.c:3605
kmalloc include/linux/slab.h:512 [inline]
kzalloc include/linux/slab.h:701 [inline]
rds_loop_conn_alloc+0xc8/0x380 net/rds/loop.c:126
__rds_conn_create+0x112f/0x1b50 net/rds/connection.c:227
rds_conn_create_outgoing+0x3f/0x50 net/rds/connection.c:309
rds_sendmsg+0xda3/0x2390 net/rds/send.c:1126
sock_sendmsg_nosec net/socket.c:630 [inline]
sock_sendmsg+0xca/0x110 net/socket.c:640
___sys_sendmsg+0x767/0x8b0 net/socket.c:2046
__sys_sendmsg+0xe5/0x210 net/socket.c:2080
C_SYSC_sendmsg net/compat.c:739 [inline]
compat_SyS_sendmsg+0x2a/0x40 net/compat.c:737
do_syscall_32_irqs_on arch/x86/entry/common.c:330 [inline]
do_fast_syscall_32+0x3ee/0xfa1 arch/x86/entry/common.c:392
entry_SYSENTER_compat+0x54/0x63 arch/x86/entry/entry_64_compat.S:129
RIP: 0023:0xf7f67c79
RSP: 002b:00000000f774209c EFLAGS: 00000286 ORIG_RAX: 0000000000000172
RAX: ffffffffffffffda RBX: 0000000000000013 RCX: 0000000020159fc8
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
binder: 8799 RLIMIT_NICE not set
binder: 8792:8799 ioctl c0306201 2000a000 returned -11
binder_alloc: binder_alloc_mmap_handler: 8792 20000000-20002000 already mapped failed -16
binder: 8812 RLIMIT_NICE not set
binder: BINDER_SET_CONTEXT_MGR already set
binder: 8792:8799 ioctl 40046207 0 returned -16
binder_alloc: 8792: binder_alloc_buf, no vma
binder: 8792:8812 transaction failed 29189/-3, size 0-0 line 2957
binder: undelivered TRANSACTION_ERROR: 29189
binder: release 8792:8812 transaction 39 out, still active
binder: undelivered TRANSACTION_COMPLETE
binder: send failed reply for transaction 39, target dead
audit: type=1400 audit(1518383170.579:55): avc: denied { fsetid } for pid=8854 comm="syz-executor7" capability=4 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1
netlink: 'syz-executor0': attribute type 4 has an invalid length.
netlink: 'syz-executor0': attribute type 4 has an invalid length.
ion_ioctl: ioctl validate failed
syz-executor0: vmalloc: allocation failure, allocated 2740903936 of 4294971392 bytes, mode:0x14010c0(GFP_KERNEL|__GFP_NORETRY), nodemask=(null)
syz-executor0 cpuset=/ mems_allowed=0
CPU: 1 PID: 9412 Comm: syz-executor0 Tainted: G W 4.15.0+ #218
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
warn_alloc+0x19a/0x2b0 mm/page_alloc.c:3306
__vmalloc_area_node mm/vmalloc.c:1718 [inline]
__vmalloc_node_range+0x482/0x650 mm/vmalloc.c:1759
__vmalloc_node mm/vmalloc.c:1804 [inline]
__vmalloc_node_flags_caller+0x50/0x60 mm/vmalloc.c:1826
kvmalloc_node+0x82/0xd0 mm/util.c:428
kvmalloc include/linux/mm.h:541 [inline]
xt_alloc_table_info+0x63/0xe0 net/netfilter/x_tables.c:1016
compat_do_replace.isra.15+0x17f/0x720 net/ipv4/netfilter/ip_tables.c:1511
compat_do_ipt_set_ctl+0x106/0x150 net/ipv4/netfilter/ip_tables.c:1551
compat_nf_sockopt net/netfilter/nf_sockopt.c:144 [inline]
compat_nf_setsockopt+0x88/0x130 net/netfilter/nf_sockopt.c:156
compat_ip_setsockopt+0x8b/0xd0 net/ipv4/ip_sockglue.c:1285
compat_udp_setsockopt+0x45/0x80 net/ipv4/udp.c:2411
compat_sock_common_setsockopt+0xb2/0x140 net/core/sock.c:2986
C_SYSC_setsockopt net/compat.c:403 [inline]
compat_SyS_setsockopt+0x17c/0x410 net/compat.c:386
do_syscall_32_irqs_on arch/x86/entry/common.c:330 [inline]
do_fast_syscall_32+0x3ee/0xfa1 arch/x86/entry/common.c:392
entry_SYSENTER_compat+0x54/0x63 arch/x86/entry/entry_64_compat.S:129
RIP: 0023:0xf7fc0c79
RSP: 002b:00000000f777a09c EFLAGS: 00000286 ORIG_RAX: 000000000000016e
RAX: ffffffffffffffda RBX: 0000000000000013 RCX: 0000000000000000
RDX: 0000000000000040 RSI: 0000000020377000 RDI: 0000000000000153
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Mem-Info:
active_anon:44860 inactive_anon:62 isolated_anon:0
active_file:4411 inactive_file:4767 isolated_file:0
unevictable:0 dirty:143 writeback:0 unstable:0
slab_reclaimable:8857 slab_unreclaimable:88596
mapped:23657 shmem:70 pagetables:639 bounce:0
free:36458 free_pcp:524 free_cma:0
Node 0 active_anon:179440kB inactive_anon:248kB active_file:17644kB inactive_file:19068kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:94628kB dirty:572kB writeback:0kB shmem:280kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 10240kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
Node 0 DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 2868 6378 6378
Node 0 DMA32 free:43836kB min:30316kB low:37892kB high:45468kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129292kB managed:2939944kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:652kB local_pcp:652kB free_cma:0kB
lowmem_reserve[]: 0 0 3510 3510
Node 0 Normal free:86088kB min:37100kB low:46372kB high:55644kB active_anon:179504kB inactive_anon:248kB active_file:17672kB inactive_file:19756kB unevictable:0kB writepending:572kB present:4718592kB managed:3594328kB mlocked:0kB kernel_stack:4224kB pagetables:2556kB bounce:0kB free_pcp:1432kB local_pcp:628kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0
Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB
Node 0 DMA32: 6*4kB (UM) 3*8kB (M) 4*16kB (UM) 6*32kB (UM) 3*64kB (M) 2*128kB (M) 1*256kB (M) 3*512kB (M) 2*1024kB (M) 1*2048kB (M) 9*4096kB (UM) = 43504kB
Node 0 Normal: 647*4kB (UME) 2963*8kB (UME) 976*16kB (UME) 465*32kB (UM) 270*64kB (UM) 74*128kB (UM) 2*256kB (M) 1*512kB (M) 2*1024kB (M) 0*2048kB 0*4096kB = 86612kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
9287 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
Free swap = 0kB
Total swap = 0kB
1965969 pages RAM
0 pages HighMem/MovableOnly
328424 pages reserved
syz-executor0: vmalloc: allocation failure, allocated 3100815360 of 4294971392 bytes, mode:0x14010c0(GFP_KERNEL|__GFP_NORETRY), nodemask=(null)
syz-executor0 cpuset=/ mems_allowed=0
CPU: 0 PID: 9406 Comm: syz-executor0 Tainted: G W 4.15.0+ #218
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
warn_alloc+0x19a/0x2b0 mm/page_alloc.c:3306
__vmalloc_area_node mm/vmalloc.c:1718 [inline]
__vmalloc_node_range+0x482/0x650 mm/vmalloc.c:1759
__vmalloc_node mm/vmalloc.c:1804 [inline]
__vmalloc_node_flags_caller+0x50/0x60 mm/vmalloc.c:1826
kvmalloc_node+0x82/0xd0 mm/util.c:428
kvmalloc include/linux/mm.h:541 [inline]
xt_alloc_table_info+0x63/0xe0 net/netfilter/x_tables.c:1016
compat_do_replace.isra.15+0x17f/0x720 net/ipv4/netfilter/ip_tables.c:1511
compat_do_ipt_set_ctl+0x106/0x150 net/ipv4/netfilter/ip_tables.c:1551
compat_nf_sockopt net/netfilter/nf_sockopt.c:144 [inline]
compat_nf_setsockopt+0x88/0x130 net/netfilter/nf_sockopt.c:156
compat_ip_setsockopt+0x8b/0xd0 net/ipv4/ip_sockglue.c:1285
compat_udp_setsockopt+0x45/0x80 net/ipv4/udp.c:2411
compat_sock_common_setsockopt+0xb2/0x140 net/core/sock.c:2986
C_SYSC_setsockopt net/compat.c:403 [inline]
compat_SyS_setsockopt+0x17c/0x410 net/compat.c:386
do_syscall_32_irqs_on arch/x86/entry/common.c:330 [inline]
do_fast_syscall_32+0x3ee/0xfa1 arch/x86/entry/common.c:392
entry_SYSENTER_compat+0x54/0x63 arch/x86/entry/entry_64_compat.S:129
RIP: 0023:0xf7fc0c79
RSP: 002b:00000000f77bc09c EFLAGS: 00000286 ORIG_RAX: 000000000000016e
RAX: ffffffffffffffda RBX: 0000000000000013 RCX: 0000000000000000
RDX: 0000000000000040 RSI: 0000000020377000 RDI: 0000000000000153
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
netlink: 3 bytes leftover after parsing attributes in process `syz-executor2'.
netlink: 3 bytes leftover after parsing attributes in process `syz-executor2'.
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=1025 sclass=netlink_route_socket pig=9488 comm=syz-executor2
syz-executor6 (9495) used greatest stack depth: 11792 bytes left