IPVS: rr: UDP 224.0.0.2:0 - no destination available
==================================================================
BUG: KASAN: slab-use-after-free in rose_timer_expiry+0x471/0x4b0 net/rose/rose_timer.c:183
Read of size 2 at addr ffff88807bb3b82a by task syz-executor/19002
CPU: 1 UID: 0 PID: 19002 Comm: syz-executor Not tainted 6.15.0-rc4-syzkaller-00147-gebd297a2affa #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/29/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:408 [inline]
print_report+0xb4/0x290 mm/kasan/report.c:521
kasan_report+0x118/0x150 mm/kasan/report.c:634
rose_timer_expiry+0x471/0x4b0 net/rose/rose_timer.c:183
call_timer_fn+0x17b/0x5f0 kernel/time/timer.c:1789
expire_timers kernel/time/timer.c:1840 [inline]
__run_timers kernel/time/timer.c:2414 [inline]
__run_timer_base+0x61a/0x860 kernel/time/timer.c:2426
run_timer_base kernel/time/timer.c:2435 [inline]
run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2445
handle_softirqs+0x283/0x870 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
invoke_softirq kernel/softirq.c:453 [inline]
__irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:instrument_atomic_read include/linux/instrumented.h:68 [inline]
RIP: 0010:atomic_long_read include/linux/atomic/atomic-instrumented.h:3188 [inline]
RIP: 0010:__mutex_owner kernel/locking/mutex.h:47 [inline]
RIP: 0010:mutex_spin_on_owner+0x27b/0x360 kernel/locking/mutex.c:350
Code: be 08 00 00 00 e8 55 24 84 00 42 80 7c 35 00 00 74 08 4c 89 e7 e8 d5 21 84 00 49 f7 04 24 01 00 00 00 0f 85 8c 00 00 00 f3 90 <4c> 89 e7 be 08 00 00 00 e8 28 24 84 00 42 80 7c 35 00 00 0f 84 90
RSP: 0018:ffffc90003ef71e8 EFLAGS: 00000246
RAX: 1ffff11006034b40 RBX: ffffffff8f2f4230 RCX: ffffffff819d9398
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000000
RBP: 1ffffffff1e5e83c R08: ffffffff8f2f41e7 R09: 1ffffffff1e5e83c
R10: dffffc0000000000 R11: fffffbfff1e5e83d R12: ffffffff8f2f41e0
R13: ffffffff8f2f4230 R14: dffffc0000000000 R15: ffff88805adb0000
mutex_optimistic_spin kernel/locking/mutex.c:467 [inline]
__mutex_lock_common kernel/locking/mutex.c:605 [inline]
__mutex_lock+0x30c/0xe80 kernel/locking/mutex.c:746
rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
rtnl_net_dev_lock+0x257/0x2f0 net/core/dev.c:2089
register_netdevice_notifier_dev_net+0x33/0x240 net/core/dev.c:2116
nsim_init_netdevsim drivers/net/netdevsim/netdev.c:967 [inline]
nsim_create+0xd31/0xef0 drivers/net/netdevsim/netdev.c:1028
__nsim_dev_port_add+0x70a/0xb20 drivers/net/netdevsim/dev.c:1393
nsim_dev_port_add_all+0x35/0xe0 drivers/net/netdevsim/dev.c:1449
nsim_drv_probe+0x883/0xb70 drivers/net/netdevsim/dev.c:1607
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x26a/0x9a0 drivers/base/dd.c:657
__driver_probe_device+0x18c/0x2f0 drivers/base/dd.c:799
driver_probe_device+0x4f/0x430 drivers/base/dd.c:829
__device_attach_driver+0x2ce/0x530 drivers/base/dd.c:957
bus_for_each_drv+0x24e/0x2e0 drivers/base/bus.c:462
__device_attach+0x2b8/0x400 drivers/base/dd.c:1029
bus_probe_device+0x185/0x260 drivers/base/bus.c:537
device_add+0x7b6/0xb50 drivers/base/core.c:3692
nsim_bus_dev_new drivers/net/netdevsim/bus.c:442 [inline]
new_device_store+0x36c/0x6f0 drivers/net/netdevsim/bus.c:173
kernfs_fop_write_iter+0x375/0x4f0 fs/kernfs/file.c:334
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0x548/0xa90 fs/read_write.c:684
ksys_write+0x145/0x250 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1bfb58d41f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007fffba58ddc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f1bfb58d41f
RDX: 0000000000000003 RSI: 00007fffba58de10 RDI: 0000000000000005
RBP: 00007f1bfb611d29 R08: 0000000000000000 R09: 00007fffba58dc17
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 00007fffba58de10 R14: 00007f1bfc2e4620 R15: 0000000000000003
Allocated by task 18597:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
__kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:394
kasan_kmalloc include/linux/kasan.h:260 [inline]
__kmalloc_cache_noprof+0x230/0x3d0 mm/slub.c:4372
kmalloc_noprof include/linux/slab.h:905 [inline]
kzalloc_noprof include/linux/slab.h:1039 [inline]
mca_alloc net/ipv6/mcast.c:884 [inline]
__ipv6_dev_mc_inc+0x420/0xaf0 net/ipv6/mcast.c:975
ipv6_add_dev+0xe63/0x1370 net/ipv6/addrconf.c:473
addrconf_notify+0x794/0x1010 net/ipv6/addrconf.c:3651
notifier_call_chain+0x1b3/0x3e0 kernel/notifier.c:85
call_netdevice_notifiers_extack net/core/dev.c:2214 [inline]
call_netdevice_notifiers net/core/dev.c:2228 [inline]
register_netdevice+0x1608/0x1af0 net/core/dev.c:11047
macvlan_common_newlink+0x120a/0x1980 drivers/net/macvlan.c:1540
rtnl_newlink_create+0x305/0xaf0 net/core/rtnetlink.c:3833
__rtnl_newlink net/core/rtnetlink.c:3950 [inline]
rtnl_newlink+0x16d6/0x1c70 net/core/rtnetlink.c:4065
rtnetlink_rcv_msg+0x7cc/0xb70 net/core/rtnetlink.c:6955
netlink_rcv_skb+0x219/0x490 net/netlink/af_netlink.c:2534
netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
netlink_unicast+0x758/0x8d0 net/netlink/af_netlink.c:1339
netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1883
sock_sendmsg_nosec net/socket.c:712 [inline]
__sock_sendmsg+0x219/0x270 net/socket.c:727
__sys_sendto+0x3bd/0x520 net/socket.c:2180
__do_sys_sendto net/socket.c:2187 [inline]
__se_sys_sendto net/socket.c:2183 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2183
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Freed by task 7985:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x62/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:233 [inline]
slab_free_hook mm/slub.c:2398 [inline]
slab_free_freelist_hook mm/slub.c:2427 [inline]
slab_free_bulk mm/slub.c:4680 [inline]
kmem_cache_free_bulk+0x2d1/0x520 mm/slub.c:5257
kfree_bulk include/linux/slab.h:794 [inline]
kvfree_rcu_bulk+0xe5/0x1e0 mm/slab_common.c:1516
kvfree_rcu_drain_ready mm/slab_common.c:1699 [inline]
kfree_rcu_monitor+0x211/0x2a0 mm/slab_common.c:1772
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Last potentially related work creation:
kasan_save_stack+0x3e/0x60 mm/kasan/common.c:47
kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:548
kvfree_call_rcu+0xbb/0x410 mm/slab_common.c:1962
__ipv6_dev_mc_dec+0x31f/0x390 net/ipv6/mcast.c:1024
ipv6_mc_destroy_dev+0x33c/0x5a0 net/ipv6/mcast.c:2852
addrconf_ifdown+0x139e/0x1880 net/ipv6/addrconf.c:3997
addrconf_notify+0x1bc/0x1010 net/ipv6/addrconf.c:-1
notifier_call_chain+0x1b3/0x3e0 kernel/notifier.c:85
call_netdevice_notifiers_extack net/core/dev.c:2214 [inline]
call_netdevice_notifiers net/core/dev.c:2228 [inline]
unregister_netdevice_many_notify+0x15d4/0x2330 net/core/dev.c:11982
unregister_netdevice_many net/core/dev.c:12046 [inline]
default_device_exit_batch+0x819/0x890 net/core/dev.c:12538
ops_exit_list net/core/net_namespace.c:177 [inline]
cleanup_net+0x7a9/0xbd0 net/core/net_namespace.c:654
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
The buggy address belongs to the object at ffff88807bb3b800
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 42 bytes inside of
freed 512-byte region [ffff88807bb3b800, ffff88807bb3ba00)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88807bb3b400 pfn:0x7bb38
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000240(workingset|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000240 ffff88801a041c80 ffffea0000a2b110 ffffea0000cf9a10
raw: ffff88807bb3b400 0000000000100009 00000000f5000000 0000000000000000
head: 00fff00000000240 ffff88801a041c80 ffffea0000a2b110 ffffea0000cf9a10
head: ffff88807bb3b400 0000000000100009 00000000f5000000 0000000000000000
head: 00fff00000000002 ffffea0001eece01 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 59, tgid 59 (kworker/1:1), ts 74248292717, free_ts 74196579593
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1d8/0x230 mm/page_alloc.c:1718
prep_new_page mm/page_alloc.c:1726 [inline]
get_page_from_freelist+0x21ce/0x22b0 mm/page_alloc.c:3688
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4970
alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2301
alloc_slab_page mm/slub.c:2468 [inline]
allocate_slab+0x8a/0x3b0 mm/slub.c:2632
new_slab mm/slub.c:2686 [inline]
___slab_alloc+0xbfc/0x1480 mm/slub.c:3872
__slab_alloc mm/slub.c:3962 [inline]
__slab_alloc_node mm/slub.c:4037 [inline]
slab_alloc_node mm/slub.c:4198 [inline]
__do_kmalloc_node mm/slub.c:4340 [inline]
__kmalloc_noprof+0x305/0x4f0 mm/slub.c:4353
kmalloc_noprof include/linux/slab.h:909 [inline]
switchdev_deferred_enqueue+0x2d/0x240 net/switchdev/switchdev.c:117
br_switchdev_mdb_notify+0x369/0x410 net/bridge/br_switchdev.c:663
br_mdb_notify+0x68/0x970 net/bridge/br_mdb.c:529
__br_multicast_add_group+0x6b5/0xa30 net/bridge/br_multicast.c:1547
br_multicast_add_group net/bridge/br_multicast.c:1569 [inline]
br_ip6_multicast_add_group net/bridge/br_multicast.c:1621 [inline]
br_ip6_multicast_mld2_report net/bridge/br_multicast.c:2976 [inline]
br_multicast_ipv6_rcv net/bridge/br_multicast.c:3914 [inline]
br_multicast_rcv+0x3a5f/0x74b0 net/bridge/br_multicast.c:3972
br_handle_frame_finish+0x78a/0x1950 net/bridge/br_input.c:156
br_nf_hook_thresh+0x3bf/0x490 net/bridge/br_netfilter_hooks.c:-1
br_nf_pre_routing_finish_ipv6+0x948/0xd00 net/bridge/br_netfilter_ipv6.c:-1
NF_HOOK include/linux/netfilter.h:314 [inline]
br_nf_pre_routing_ipv6+0x37e/0x6b0 net/bridge/br_netfilter_ipv6.c:184
page last free pid 980 tgid 980 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1262 [inline]
__free_frozen_pages+0xb0e/0xcd0 mm/page_alloc.c:2725
__slab_free+0x326/0x400 mm/slub.c:4567
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4161 [inline]
slab_alloc_node mm/slub.c:4210 [inline]
__kmalloc_cache_noprof+0x1be/0x3d0 mm/slub.c:4367
kmalloc_noprof include/linux/slab.h:905 [inline]
kzalloc_noprof include/linux/slab.h:1039 [inline]
nsim_fib6_rt_create drivers/net/netdevsim/fib.c:547 [inline]
nsim_fib6_rt_insert drivers/net/netdevsim/fib.c:752 [inline]
nsim_fib6_event drivers/net/netdevsim/fib.c:856 [inline]
nsim_fib_event drivers/net/netdevsim/fib.c:889 [inline]
nsim_fib_event_work+0x1174/0x3180 drivers/net/netdevsim/fib.c:1493
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Memory state around the buggy address:
ffff88807bb3b700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88807bb3b780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88807bb3b800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88807bb3b880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88807bb3b900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess):
0: be 08 00 00 00 mov $0x8,%esi
5: e8 55 24 84 00 call 0x84245f
a: 42 80 7c 35 00 00 cmpb $0x0,0x0(%rbp,%r14,1)
10: 74 08 je 0x1a
12: 4c 89 e7 mov %r12,%rdi
15: e8 d5 21 84 00 call 0x8421ef
1a: 49 f7 04 24 01 00 00 testq $0x1,(%r12)
21: 00
22: 0f 85 8c 00 00 00 jne 0xb4
28: f3 90 pause
* 2a: 4c 89 e7 mov %r12,%rdi <-- trapping instruction
2d: be 08 00 00 00 mov $0x8,%esi
32: e8 28 24 84 00 call 0x84245f
37: 42 80 7c 35 00 00 cmpb $0x0,0x0(%rbp,%r14,1)
3d: 0f .byte 0xf
3e: 84 .byte 0x84
3f: 90 nop