fail_dump lib/fault-inject.c:51 [inline]
should_fail.cold+0x10a/0x149 lib/fault-inject.c:149
should_failslab+0xd6/0x130 mm/failslab.c:32
==================================================================
slab_pre_alloc_hook mm/slab.h:421 [inline]
slab_alloc mm/slab.c:3376 [inline]
kmem_cache_alloc+0x28e/0x3c0 mm/slab.c:3550
anon_vma_alloc mm/rmap.c:82 [inline]
anon_vma_fork+0xe3/0x5a0 mm/rmap.c:342
BUG: KASAN: slab-out-of-bounds in tipc_nametbl_lookup_dst_nodes+0x4ad/0x4c0 net/tipc/name_table.c:670
Read of size 4 at addr ffff8880aa846150 by task syz-executor.1/9087
dup_mmap kernel/fork.c:664 [inline]
dup_mm kernel/fork.c:1200 [inline]
copy_mm kernel/fork.c:1255 [inline]
copy_process.part.0+0x4c64/0x71c0 kernel/fork.c:1791
copy_process kernel/fork.c:1606 [inline]
_do_fork+0x17a/0xcb0 kernel/fork.c:2092
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7f4cb10840f9
RSP: 002b:00007f4caf5f6118 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f4cb11a3f80 RCX: 00007f4cb10840f9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000080084400
RBP: 00007f4caf5f61d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000002
R13: 00007fffa026f0ef R14: 00007f4caf5f6300 R15: 0000000000022000
CPU: 1 PID: 9087 Comm: syz-executor.1 Not tainted 4.14.307-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x281 lib/dump_stack.c:58
print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:251
kasan_report_error.cold+0x8a/0x191 mm/kasan/report.c:350
kasan_report mm/kasan/report.c:408 [inline]
__asan_report_load4_noabort+0x68/0x70 mm/kasan/report.c:428
tipc_nametbl_lookup_dst_nodes+0x4ad/0x4c0 net/tipc/name_table.c:670
tipc_sendmcast+0x51a/0xac0 net/tipc/socket.c:768
__tipc_sendmsg+0xbab/0xf90 net/tipc/socket.c:975
tipc_sendmsg+0x4c/0x70 net/tipc/socket.c:923
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
___sys_sendmsg+0x6c8/0x800 net/socket.c:2062
__sys_sendmsg+0xa3/0x120 net/socket.c:2096
SYSC_sendmsg net/socket.c:2107 [inline]
SyS_sendmsg+0x27/0x40 net/socket.c:2103
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7f18dc8c80f9
RSP: 002b:00007f18dae3a168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f18dc9e7f80 RCX: 00007f18dc8c80f9
RDX: 0000000000000840 RSI: 0000000020000680 RDI: 0000000000000005
RBP: 00007f18dc923ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffc2ef1e9f R14: 00007f18dae3a300 R15: 0000000000022000
CPU: 0 PID: 9077 Comm: syz-executor.2 Not tainted 4.14.307-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
Allocated by task 8027:
Call Trace:
save_stack mm/kasan/kasan.c:447 [inline]
set_track mm/kasan/kasan.c:459 [inline]
kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x281 lib/dump_stack.c:58
__do_kmalloc mm/slab.c:3720 [inline]
__kmalloc+0x15a/0x400 mm/slab.c:3729
fail_dump lib/fault-inject.c:51 [inline]
should_fail.cold+0x10a/0x149 lib/fault-inject.c:149
tipc_nameseq_create+0x53/0x290 net/tipc/name_table.c:152
tipc_nametbl_insert_publ+0xb37/0x14e0 net/tipc/name_table.c:476
should_failslab+0xd6/0x130 mm/failslab.c:32
tipc_nametbl_publish+0x211/0x3f0 net/tipc/name_table.c:701
slab_pre_alloc_hook mm/slab.h:421 [inline]
slab_alloc mm/slab.c:3376 [inline]
kmem_cache_alloc+0x40/0x3c0 mm/slab.c:3550
tipc_sk_publish net/tipc/socket.c:2206 [inline]
tipc_bind+0x2c4/0x600 net/tipc/socket.c:630
anon_vma_chain_alloc mm/rmap.c:130 [inline]
anon_vma_clone+0xd6/0x580 mm/rmap.c:270
tipc_create_listen_sock net/tipc/server.c:338 [inline]
tipc_open_listening_sock net/tipc/server.c:396 [inline]
tipc_server_start+0x31f/0x880 net/tipc/server.c:611
anon_vma_fork+0x82/0x5a0 mm/rmap.c:333
tipc_topsrv_start net/tipc/subscr.c:382 [inline]
tipc_topsrv_init_net+0x53b/0x730 net/tipc/subscr.c:397
ops_init+0xaa/0x3e0 net/core/net_namespace.c:118
setup_net+0x22f/0x530 net/core/net_namespace.c:298
dup_mmap kernel/fork.c:664 [inline]
dup_mm kernel/fork.c:1200 [inline]
copy_mm kernel/fork.c:1255 [inline]
copy_process.part.0+0x4c64/0x71c0 kernel/fork.c:1791
copy_net_ns+0x19b/0x440 net/core/net_namespace.c:422
create_new_namespaces+0x375/0x720 kernel/nsproxy.c:107
unshare_nsproxy_namespaces+0xa1/0x1d0 kernel/nsproxy.c:206
SYSC_unshare kernel/fork.c:2413 [inline]
SyS_unshare+0x308/0x7f0 kernel/fork.c:2363
copy_process kernel/fork.c:1606 [inline]
_do_fork+0x17a/0xcb0 kernel/fork.c:2092
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x5e/0xd3
Freed by task 1:
save_stack mm/kasan/kasan.c:447 [inline]
set_track mm/kasan/kasan.c:459 [inline]
kasan_slab_free+0xc3/0x1a0 mm/kasan/kasan.c:524
__cache_free mm/slab.c:3496 [inline]
kfree+0xc9/0x250 mm/slab.c:3815
aa_free_task_context+0xda/0x130 security/apparmor/context.c:54
apparmor_cred_free+0x34/0x70 security/apparmor/lsm.c:58
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
security_cred_free+0x71/0xb0 security/security.c:1003
entry_SYSCALL_64_after_hwframe+0x5e/0xd3
put_cred_rcu+0xe3/0x300 kernel/cred.c:117
RIP: 0033:0x7f33cb2f70f9
__rcu_reclaim kernel/rcu/rcu.h:195 [inline]
rcu_do_batch kernel/rcu/tree.c:2699 [inline]
invoke_rcu_callbacks kernel/rcu/tree.c:2962 [inline]
__rcu_process_callbacks kernel/rcu/tree.c:2929 [inline]
rcu_process_callbacks+0x780/0x1180 kernel/rcu/tree.c:2946
RSP: 002b:00007f33c9869118 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
__do_softirq+0x24d/0x9ff kernel/softirq.c:288
RAX: ffffffffffffffda RBX: 00007f33cb416f80 RCX: 00007f33cb2f70f9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000080084400
The buggy address belongs to the object at ffff8880aa846140
which belongs to the cache kmalloc-32 of size 32
RBP: 00007f33c98691d0 R08: 0000000000000000 R09: 0000000000000000
The buggy address is located 16 bytes inside of
32-byte region [ffff8880aa846140, ffff8880aa846160)
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000002
The buggy address belongs to the page:
R13: 00007ffd5ab11e9f R14: 00007f33c9869300 R15: 0000000000022000
page:ffffea0002aa1180 count:1 mapcount:0 mapping:ffff8880aa846000 index:0xffff8880aa846fc1
flags: 0xfff00000000100(slab)
raw: 00fff00000000100 ffff8880aa846000 ffff8880aa846fc1 000000010000003e
raw: ffffea0002bfe260 ffffea0002cb37a0 ffff88813fe741c0 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff8880aa846000: 00 fc fc fc fc fc fc fc fb fb fb fb fc fc fc fc
ffff8880aa846080: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
>ffff8880aa846100: fb fb fb fb fc fc fc fc 00 00 fc fc fc fc fc fc
^
ffff8880aa846180: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
ffff8880aa846200: 00 fc fc fc fc fc fc fc fb fb fb fb fc fc fc fc
==================================================================