==================================================================
BUG: KASAN: slab-out-of-bounds in hlist_add_head include/linux/list.h:814 [inline]
BUG: KASAN: slab-out-of-bounds in enqueue_timer+0xb7/0x300 kernel/time/timer.c:541
Write of size 8 at addr ffff8881da22f1c8 by task syz-executor/1710
CPU: 0 PID: 1710 Comm: syz-executor Not tainted 5.4.274-syzkaller-00002-g6f97bd951d82 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1d8/0x241 lib/dump_stack.c:118
print_address_description+0x8c/0x600 mm/kasan/report.c:384
__kasan_report+0xf3/0x120 mm/kasan/report.c:516
kasan_report+0x30/0x60 mm/kasan/common.c:653
hlist_add_head include/linux/list.h:814 [inline]
enqueue_timer+0xb7/0x300 kernel/time/timer.c:541
__internal_add_timer kernel/time/timer.c:554 [inline]
internal_add_timer+0x240/0x430 kernel/time/timer.c:604
__mod_timer+0x6f1/0x13e0 kernel/time/timer.c:1065
mld_ifc_start_timer net/ipv6/mcast.c:1053 [inline]
mld_ifc_timer_expire+0xa4b/0xc10 net/ipv6/mcast.c:2478
call_timer_fn+0x36/0x390 kernel/time/timer.c:1448
expire_timers kernel/time/timer.c:1493 [inline]
__run_timers+0x879/0xbe0 kernel/time/timer.c:1817
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1830
__do_softirq+0x23b/0x6b7 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x195/0x1c0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:538 [inline]
smp_apic_timer_interrupt+0x11a/0x460 arch/x86/kernel/apic/apic.c:1149
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:90 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:108 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:134 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:165 [inline]
RIP: 0010:check_memory_region_inline mm/kasan/generic.c:181 [inline]
RIP: 0010:check_memory_region+0x5c/0x280 mm/kasan/generic.c:191
Code: fc ff df 4e 8d 0c 03 4c 8d 54 37 ff 49 c1 ea 03 49 bb 01 00 00 00 00 fc ff df 4f 8d 34 1a 4c 89 f5 4c 29 cd 48 83 fd 10 7f 26 <48> 85 ed 0f 84 3a 01 00 00 49 f7 d2 49 01 da 41 80 39 00 0f 85 c4
RSP: 0018:ffff8881ed48e538 EFLAGS: 00000283 ORIG_RAX: ffffffffffffff13
RAX: ffff8881ed48e801 RBX: 1ffff1103da91d1a RCX: ffffffff812fce86
RDX: 0000000000000001 RSI: 0000000000000010 RDI: ffff8881ed48e8d0
RBP: 0000000000000002 R08: dffffc0000000000 R09: ffffed103da91d1a
R10: 1ffff1103da91d1b R11: dffffc0000000001 R12: 1ffffffff0cf9c34
R13: ffffffff867ce19e R14: ffffed103da91d1c R15: dffffc0000000000
memset+0x1f/0x40 mm/kasan/common.c:106
unwind_next_frame+0x1036/0x1ea0 arch/x86/kernel/unwind_orc.c:534
arch_stack_walk+0x111/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1c0 kernel/stacktrace.c:123
save_stack mm/kasan/common.c:70 [inline]
set_track mm/kasan/common.c:78 [inline]
__kasan_kmalloc+0x171/0x210 mm/kasan/common.c:529
kmalloc include/linux/slab.h:556 [inline]
kzalloc include/linux/slab.h:690 [inline]
tnode_alloc net/ipv4/fib_trie.c:334 [inline]
tnode_new net/ipv4/fib_trie.c:387 [inline]
fib_insert_node net/ipv4/fib_trie.c:1035 [inline]
fib_insert_alias+0x47e/0xf80 net/ipv4/fib_trie.c:1072
fib_table_insert+0x9a3/0x19b0 net/ipv4/fib_trie.c:1275
fib_magic net/ipv4/fib_frontend.c:1103 [inline]
fib_add_ifaddr+0x42c/0x1a40 net/ipv4/fib_frontend.c:1125
fib_inetaddr_event+0x12b/0x2b0 net/ipv4/fib_frontend.c:1441
notifier_call_chain kernel/notifier.c:98 [inline]
__blocking_notifier_call_chain kernel/notifier.c:322 [inline]
blocking_notifier_call_chain+0xd5/0x160 kernel/notifier.c:333
__inet_insert_ifa+0x907/0xb50 net/ipv4/devinet.c:553
inet_rtm_newaddr+0x8f1/0x16a0 net/ipv4/devinet.c:957
rtnetlink_rcv_msg+0x983/0xc70 net/core/rtnetlink.c:5290
netlink_rcv_skb+0x1d5/0x420 net/netlink/af_netlink.c:2481
netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline]
netlink_unicast+0x936/0xb20 net/netlink/af_netlink.c:1347
netlink_sendmsg+0xa18/0xcf0 net/netlink/af_netlink.c:1915
sock_sendmsg_nosec net/socket.c:638 [inline]
__sock_sendmsg net/socket.c:650 [inline]
__sys_sendto+0x4f3/0x6c0 net/socket.c:1961
__do_sys_sendto net/socket.c:1973 [inline]
__se_sys_sendto net/socket.c:1969 [inline]
__x64_sys_sendto+0xda/0xf0 net/socket.c:1969
do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7f8e2e238823
Code: 64 89 02 48 c7 c0 ff ff ff ff eb b7 66 2e 0f 1f 84 00 00 00 00 00 90 80 3d 21 dd 15 00 00 41 89 ca 74 14 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 75 c3 0f 1f 40 00 55 48 83 ec 30 44 89 4c 24
RSP: 002b:00007ffce2fb1848 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f8e2eef5620 RCX: 00007f8e2e238823
RDX: 0000000000000028 RSI: 00007f8e2eef5670 RDI: 0000000000000003
RBP: 0000000000000001 R08: 00007ffce2fb1864 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f8e2eef5670 R15: 0000000000000000
Allocated by task 1672:
save_stack mm/kasan/common.c:70 [inline]
set_track mm/kasan/common.c:78 [inline]
__kasan_kmalloc+0x171/0x210 mm/kasan/common.c:529
kmalloc include/linux/slab.h:556 [inline]
kzalloc include/linux/slab.h:690 [inline]
inetdev_init+0x7e/0x450 net/ipv4/devinet.c:259
inetdev_event+0x205/0x1040 net/ipv4/devinet.c:1531
notifier_call_chain kernel/notifier.c:98 [inline]
__raw_notifier_call_chain kernel/notifier.c:399 [inline]
raw_notifier_call_chain+0x95/0x110 kernel/notifier.c:406
call_netdevice_notifiers_info net/core/dev.c:1670 [inline]
call_netdevice_notifiers_extack net/core/dev.c:1682 [inline]
call_netdevice_notifiers net/core/dev.c:1696 [inline]
register_netdevice+0xeef/0x12a0 net/core/dev.c:9221
veth_newlink+0x835/0xb50 drivers/net/veth.c:1329
__rtnl_newlink net/core/rtnetlink.c:3255 [inline]
rtnl_newlink+0x1567/0x2060 net/core/rtnetlink.c:3314
rtnetlink_rcv_msg+0x983/0xc70 net/core/rtnetlink.c:5290
netlink_rcv_skb+0x1d5/0x420 net/netlink/af_netlink.c:2481
netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline]
netlink_unicast+0x936/0xb20 net/netlink/af_netlink.c:1347
netlink_sendmsg+0xa18/0xcf0 net/netlink/af_netlink.c:1915
sock_sendmsg_nosec net/socket.c:638 [inline]
__sock_sendmsg net/socket.c:650 [inline]
__sys_sendto+0x4f3/0x6c0 net/socket.c:1961
__do_sys_sendto net/socket.c:1973 [inline]
__se_sys_sendto net/socket.c:1969 [inline]
__x64_sys_sendto+0xda/0xf0 net/socket.c:1969
do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x5c/0xc1
Freed by task 0:
(stack is not available)
The buggy address belongs to the object at ffff8881da22f000
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 456 bytes inside of
512-byte region [ffff8881da22f000, ffff8881da22f200)
The buggy address belongs to the page:
page:ffffea0007688b00 refcount:1 mapcount:0 mapping:ffff8881f5c02500 index:0x0 compound_mapcount: 0
flags: 0x8000000000010200(slab|head)
raw: 8000000000010200 dead000000000100 dead000000000122 ffff8881f5c02500
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL)
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook mm/page_alloc.c:2165 [inline]
prep_new_page+0x18f/0x370 mm/page_alloc.c:2171
get_page_from_freelist+0x2d13/0x2d90 mm/page_alloc.c:3794
__alloc_pages_nodemask+0x393/0x840 mm/page_alloc.c:4893
alloc_slab_page+0x39/0x3c0 mm/slub.c:343
allocate_slab mm/slub.c:1683 [inline]
new_slab+0x97/0x440 mm/slub.c:1749
new_slab_objects mm/slub.c:2505 [inline]
___slab_alloc+0x2fe/0x490 mm/slub.c:2667
__slab_alloc+0x62/0xa0 mm/slub.c:2707
slab_alloc_node mm/slub.c:2792 [inline]
slab_alloc mm/slub.c:2837 [inline]
__kmalloc_track_caller+0x16d/0x2b0 mm/slub.c:4449
__kmalloc_reserve net/core/skbuff.c:142 [inline]
__alloc_skb+0xb4/0x4d0 net/core/skbuff.c:210
alloc_skb include/linux/skbuff.h:1080 [inline]
netlink_alloc_large_skb net/netlink/af_netlink.c:1193 [inline]
netlink_sendmsg+0x797/0xcf0 net/netlink/af_netlink.c:1890
sock_sendmsg_nosec net/socket.c:638 [inline]
__sock_sendmsg net/socket.c:650 [inline]
__sys_sendto+0x4f3/0x6c0 net/socket.c:1961
__do_sys_sendto net/socket.c:1973 [inline]
__se_sys_sendto net/socket.c:1969 [inline]
__x64_sys_sendto+0xda/0xf0 net/socket.c:1969
do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x5c/0xc1
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1176 [inline]
free_pcp_prepare mm/page_alloc.c:1233 [inline]
free_unref_page_prepare+0x297/0x380 mm/page_alloc.c:3085
free_unref_page mm/page_alloc.c:3134 [inline]
free_the_page mm/page_alloc.c:4953 [inline]
__free_pages+0xaf/0x140 mm/page_alloc.c:4961
pcpu_free_pages mm/percpu-vm.c:64 [inline]
pcpu_depopulate_chunk mm/percpu-vm.c:328 [inline]
pcpu_balance_workfn+0x940/0x1450 mm/percpu.c:1865
process_one_work+0x765/0xd20 kernel/workqueue.c:2290
worker_thread+0xaef/0x1470 kernel/workqueue.c:2436
kthread+0x2da/0x360 kernel/kthread.c:288
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:354
Memory state around the buggy address:
ffff8881da22f080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff8881da22f100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8881da22f180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
^
ffff8881da22f200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff8881da22f280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 0 P4D 0
Oops: 0010 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 1710 Comm: syz-executor Tainted: G B 5.4.274-syzkaller-00002-g6f97bd951d82 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff8881f6e09d18 EFLAGS: 00010202
RAX: ffffffff8154d7aa RBX: 0000000000000101 RCX: ffff8881e3b00000
RDX: 0000000000000101 RSI: 0000000000000000 RDI: ffff8881da22f1c0
RBP: ffff8881f6e09ec8 R08: ffffffff8154d3ee R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: 00000000ffffa3d8
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881da22f1c0
FS: 0000555556acd500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001ee9e7000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
call_timer_fn+0x36/0x390 kernel/time/timer.c:1448
expire_timers kernel/time/timer.c:1493 [inline]
__run_timers+0x879/0xbe0 kernel/time/timer.c:1817
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1830
__do_softirq+0x23b/0x6b7 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x195/0x1c0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:538 [inline]
smp_apic_timer_interrupt+0x11a/0x460 arch/x86/kernel/apic/apic.c:1149
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:90 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:108 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:134 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:165 [inline]
RIP: 0010:check_memory_region_inline mm/kasan/generic.c:181 [inline]
RIP: 0010:check_memory_region+0x5c/0x280 mm/kasan/generic.c:191
Code: fc ff df 4e 8d 0c 03 4c 8d 54 37 ff 49 c1 ea 03 49 bb 01 00 00 00 00 fc ff df 4f 8d 34 1a 4c 89 f5 4c 29 cd 48 83 fd 10 7f 26 <48> 85 ed 0f 84 3a 01 00 00 49 f7 d2 49 01 da 41 80 39 00 0f 85 c4
RSP: 0018:ffff8881ed48e538 EFLAGS: 00000283 ORIG_RAX: ffffffffffffff13
RAX: ffff8881ed48e801 RBX: 1ffff1103da91d1a RCX: ffffffff812fce86
RDX: 0000000000000001 RSI: 0000000000000010 RDI: ffff8881ed48e8d0
RBP: 0000000000000002 R08: dffffc0000000000 R09: ffffed103da91d1a
R10: 1ffff1103da91d1b R11: dffffc0000000001 R12: 1ffffffff0cf9c34
R13: ffffffff867ce19e R14: ffffed103da91d1c R15: dffffc0000000000
memset+0x1f/0x40 mm/kasan/common.c:106
unwind_next_frame+0x1036/0x1ea0 arch/x86/kernel/unwind_orc.c:534
arch_stack_walk+0x111/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1c0 kernel/stacktrace.c:123
save_stack mm/kasan/common.c:70 [inline]
set_track mm/kasan/common.c:78 [inline]
__kasan_kmalloc+0x171/0x210 mm/kasan/common.c:529
kmalloc include/linux/slab.h:556 [inline]
kzalloc include/linux/slab.h:690 [inline]
tnode_alloc net/ipv4/fib_trie.c:334 [inline]
tnode_new net/ipv4/fib_trie.c:387 [inline]
fib_insert_node net/ipv4/fib_trie.c:1035 [inline]
fib_insert_alias+0x47e/0xf80 net/ipv4/fib_trie.c:1072
fib_table_insert+0x9a3/0x19b0 net/ipv4/fib_trie.c:1275
fib_magic net/ipv4/fib_frontend.c:1103 [inline]
fib_add_ifaddr+0x42c/0x1a40 net/ipv4/fib_frontend.c:1125
fib_inetaddr_event+0x12b/0x2b0 net/ipv4/fib_frontend.c:1441
notifier_call_chain kernel/notifier.c:98 [inline]
__blocking_notifier_call_chain kernel/notifier.c:322 [inline]
blocking_notifier_call_chain+0xd5/0x160 kernel/notifier.c:333
__inet_insert_ifa+0x907/0xb50 net/ipv4/devinet.c:553
inet_rtm_newaddr+0x8f1/0x16a0 net/ipv4/devinet.c:957
rtnetlink_rcv_msg+0x983/0xc70 net/core/rtnetlink.c:5290
netlink_rcv_skb+0x1d5/0x420 net/netlink/af_netlink.c:2481
netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline]
netlink_unicast+0x936/0xb20 net/netlink/af_netlink.c:1347
netlink_sendmsg+0xa18/0xcf0 net/netlink/af_netlink.c:1915
sock_sendmsg_nosec net/socket.c:638 [inline]
__sock_sendmsg net/socket.c:650 [inline]
__sys_sendto+0x4f3/0x6c0 net/socket.c:1961
__do_sys_sendto net/socket.c:1973 [inline]
__se_sys_sendto net/socket.c:1969 [inline]
__x64_sys_sendto+0xda/0xf0 net/socket.c:1969
do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7f8e2e238823
Code: 64 89 02 48 c7 c0 ff ff ff ff eb b7 66 2e 0f 1f 84 00 00 00 00 00 90 80 3d 21 dd 15 00 00 41 89 ca 74 14 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 75 c3 0f 1f 40 00 55 48 83 ec 30 44 89 4c 24
RSP: 002b:00007ffce2fb1848 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f8e2eef5620 RCX: 00007f8e2e238823
RDX: 0000000000000028 RSI: 00007f8e2eef5670 RDI: 0000000000000003
RBP: 0000000000000001 R08: 00007ffce2fb1864 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f8e2eef5670 R15: 0000000000000000
Modules linked in:
CR2: 0000000000000000
---[ end trace 0b8972f924fcdddf ]---
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff8881f6e09d18 EFLAGS: 00010202
RAX: ffffffff8154d7aa RBX: 0000000000000101 RCX: ffff8881e3b00000
RDX: 0000000000000101 RSI: 0000000000000000 RDI: ffff8881da22f1c0
RBP: ffff8881f6e09ec8 R08: ffffffff8154d3ee R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: 00000000ffffa3d8
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881da22f1c0
FS: 0000555556acd500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001ee9e7000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 2 bytes skipped:
0: df 4e 8d fisttps -0x73(%rsi)
3: 0c 03 or $0x3,%al
5: 4c 8d 54 37 ff lea -0x1(%rdi,%rsi,1),%r10
a: 49 c1 ea 03 shr $0x3,%r10
e: 49 bb 01 00 00 00 00 movabs $0xdffffc0000000001,%r11
15: fc ff df
18: 4f 8d 34 1a lea (%r10,%r11,1),%r14
1c: 4c 89 f5 mov %r14,%rbp
1f: 4c 29 cd sub %r9,%rbp
22: 48 83 fd 10 cmp $0x10,%rbp
26: 7f 26 jg 0x4e
* 28: 48 85 ed test %rbp,%rbp <-- trapping instruction
2b: 0f 84 3a 01 00 00 je 0x16b
31: 49 f7 d2 not %r10
34: 49 01 da add %rbx,%r10
37: 41 80 39 00 cmpb $0x0,(%r9)
3b: 0f .byte 0xf
3c: 85 c4 test %eax,%esp