[moderation] [netfilter?] KASAN: slab-use-after-free Read in bitmap_port_gc
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syzbot
Feb 7, 2024, 8:52:23 AMFeb 7
to syzkaller-upst...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 54be6c6c5ae8 Linux 6.8-rc3
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=15bf853fe80000
kernel config: https://syzkaller.appspot.com/x/.config?x=3d64aaed894826fe
dashboard link: https://syzkaller.appspot.com/bug?extid=096c7525a061cc9ef91d
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
CC: [core...@netfilter.org da...@davemloft.net edum...@google.com f...@strlen.de kad...@netfilter.org ku...@kernel.org linux-...@vger.kernel.org net...@vger.kernel.org netfilt...@vger.kernel.org pab...@redhat.com pa...@netfilter.org]
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/0b0923d370ec/disk-54be6c6c.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/b7928636ae34/vmlinux-54be6c6c.xz
kernel image: https://storage.googleapis.com/syzbot-assets/b30ae4da697b/bzImage-54be6c6c.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+096c75...@syzkaller.appspotmail.com
==================================================================
BUG: KASAN: slab-use-after-free in instrument_atomic_read include/linux/instrumented.h:68 [inline]
BUG: KASAN: slab-use-after-free in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
BUG: KASAN: slab-use-after-free in bitmap_port_gc_test net/netfilter/ipset/ip_set_bitmap_port.c:67 [inline]
BUG: KASAN: slab-use-after-free in bitmap_port_gc+0x146/0x4c0 net/netfilter/ipset/ip_set_bitmap_gen.h:277
Read of size 8 at addr ffff88802e2e0ae0 by task syz-executor.1/27596
CPU: 0 PID: 27596 Comm: syz-executor.1 Not tainted 6.8.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:377 [inline]
print_report+0x167/0x540 mm/kasan/report.c:488
kasan_report+0x142/0x180 mm/kasan/report.c:601
kasan_check_range+0x282/0x290 mm/kasan/generic.c:189
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
bitmap_port_gc_test net/netfilter/ipset/ip_set_bitmap_port.c:67 [inline]
bitmap_port_gc+0x146/0x4c0 net/netfilter/ipset/ip_set_bitmap_gen.h:277
call_timer_fn+0x180/0x600 kernel/time/timer.c:1700
expire_timers kernel/time/timer.c:1751 [inline]
__run_timers+0x621/0x830 kernel/time/timer.c:2038
run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2051
__do_softirq+0x2bd/0x942 kernel/softirq.c:553
invoke_softirq kernel/softirq.c:427 [inline]
__irq_exit_rcu+0xf1/0x1c0 kernel/softirq.c:632
irq_exit_rcu+0x9/0x30 kernel/softirq.c:644
sysvec_apic_timer_interrupt+0x97/0xb0 arch/x86/kernel/apic/apic.c:1076
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:check_preemption_disabled+0x19/0x120 lib/smp_processor_id.c:14
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 41 56 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 <65> 8b 1d 7c 53 9d 74 65 8b 05 71 53 9d 74 a9 ff ff ff 7f 74 26 65
RSP: 0018:ffffc90013ee7260 EFLAGS: 00000286
RAX: 98ad546621bd5400 RBX: 0000000000000001 RCX: ffff888025b3d940
RDX: ffff888025b3d940 RSI: ffffffff8bfe6700 RDI: ffffffff8bfe66c0
RBP: 0000000000000001 R08: ffffffff82014d38 R09: 1ffffffff2591284
R10: dffffc0000000000 R11: fffffbfff2591285 R12: dffffc0000000000
R13: 0000000000033c06 R14: ffffffff82014b76 R15: ffff88813fff90c0
rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline]
rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:700
rcu_read_unlock_sched include/linux/rcupdate.h:861 [inline]
pfn_valid+0x2c1/0x440 include/linux/mmzone.h:2026
page_table_check_set+0x25/0x700 mm/page_table_check.c:105
__page_table_check_ptes_set+0x220/0x280 mm/page_table_check.c:196
page_table_check_ptes_set include/linux/page_table_check.h:74 [inline]
set_ptes include/linux/pgtable.h:241 [inline]
copy_present_pte mm/memory.c:993 [inline]
copy_pte_range mm/memory.c:1102 [inline]
copy_pmd_range mm/memory.c:1187 [inline]
copy_pud_range mm/memory.c:1224 [inline]
copy_p4d_range mm/memory.c:1248 [inline]
copy_page_range+0x2c7e/0x4240 mm/memory.c:1346
dup_mmap kernel/fork.c:745 [inline]
dup_mm kernel/fork.c:1685 [inline]
copy_mm+0x12f4/0x21b0 kernel/fork.c:1734
copy_process+0x1d73/0x3fc0 kernel/fork.c:2497
kernel_clone+0x21d/0x8d0 kernel/fork.c:2902
__do_sys_clone kernel/fork.c:3045 [inline]
__se_sys_clone kernel/fork.c:3029 [inline]
__x64_sys_clone+0x258/0x2a0 kernel/fork.c:3029
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f62c447add3
Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
RSP: 002b:00007fff230e3b08 EFLAGS: 00000246
ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f62c447add3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000555556176750 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001
</TASK>
Allocated by task 2186:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:372 [inline]
__kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:389
kasan_kmalloc include/linux/kasan.h:211 [inline]
__do_kmalloc_node mm/slub.c:3981 [inline]
__kmalloc+0x22e/0x490 mm/slub.c:3994
init_map_port net/netfilter/ipset/ip_set_bitmap_port.c:234 [inline]
bitmap_port_create+0x324/0x7c0 net/netfilter/ipset/ip_set_bitmap_port.c:276
ip_set_create+0xa5e/0x1780 net/netfilter/ipset/ip_set_core.c:1103
nfnetlink_rcv_msg+0xbee/0x1190 net/netfilter/nfnetlink.c:302
netlink_rcv_skb+0x1e5/0x430 net/netlink/af_netlink.c:2543
nfnetlink_rcv+0x294/0x2650 net/netfilter/nfnetlink.c:659
netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]
netlink_unicast+0x7ec/0x980 net/netlink/af_netlink.c:1367
netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x223/0x270 net/socket.c:745
____sys_sendmsg+0x525/0x7d0 net/socket.c:2584
___sys_sendmsg net/socket.c:2638 [inline]
__sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
Freed by task 22329:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x4e/0x60 mm/kasan/generic.c:640
poison_slab_object+0xa6/0xe0 mm/kasan/common.c:241
__kasan_slab_free+0x34/0x70 mm/kasan/common.c:257
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2121 [inline]
slab_free mm/slub.c:4299 [inline]
kfree+0x14a/0x380 mm/slub.c:4409
bitmap_port_destroy+0x300/0x390 net/netfilter/ipset/ip_set_bitmap_gen.h:65
ip_set_destroy_set net/netfilter/ipset/ip_set_core.c:1180 [inline]
ip_set_net_exit+0x252/0x470 net/netfilter/ipset/ip_set_core.c:2381
ops_exit_list net/core/net_namespace.c:170 [inline]
cleanup_net+0x6dc/0xb90 net/core/net_namespace.c:618
process_one_work kernel/workqueue.c:2633 [inline]
process_scheduled_works+0x915/0x1420 kernel/workqueue.c:2706
worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
kthread+0x2f1/0x390 kernel/kthread.c:388
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
The buggy address belongs to the object at ffff88802e2e0ae0
which belongs to the cache kmalloc-8 of size 8
The buggy address is located 0 bytes inside of
freed 8-byte region [ffff88802e2e0ae0, ffff88802e2e0ae8)
The buggy address belongs to the physical page:
page:ffffea0000b8b800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2e2e0
flags: 0xfff00000000800(slab|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000800 ffff888014c41280 ffffea0002177fc0 dead000000000006
raw: 0000000000000000 00000000002a002a 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 32330, tgid 32330 (syz-executor.2), ts 2411372001560, free_ts 2411295968596
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x1ea/0x210 mm/page_alloc.c:1533
prep_new_page mm/page_alloc.c:1540 [inline]
get_page_from_freelist+0x33ea/0x3580 mm/page_alloc.c:3311
__alloc_pages+0x255/0x680 mm/page_alloc.c:4567
__alloc_pages_node include/linux/gfp.h:238 [inline]
alloc_pages_node include/linux/gfp.h:261 [inline]
alloc_slab_page+0x5f/0x160 mm/slub.c:2190
allocate_slab mm/slub.c:2354 [inline]
new_slab+0x84/0x2f0 mm/slub.c:2407
___slab_alloc+0xd17/0x13e0 mm/slub.c:3540
__slab_alloc mm/slub.c:3625 [inline]
__slab_alloc_node mm/slub.c:3678 [inline]
slab_alloc_node mm/slub.c:3850 [inline]
__do_kmalloc_node mm/slub.c:3980 [inline]
__kmalloc_node_track_caller+0x2d1/0x4e0 mm/slub.c:4001
kstrdup+0x3a/0x80 mm/util.c:62
__kernfs_new_node+0x9d/0x880 fs/kernfs/dir.c:611
kernfs_new_node+0x13a/0x240 fs/kernfs/dir.c:691
kernfs_create_dir_ns+0x43/0x120 fs/kernfs/dir.c:1052
sysfs_create_dir_ns+0x189/0x3a0 fs/sysfs/dir.c:59
create_dir lib/kobject.c:73 [inline]
kobject_add_internal+0x40d/0x8a0 lib/kobject.c:238
kobject_add_varg lib/kobject.c:372 [inline]
kobject_init_and_add+0x124/0x190 lib/kobject.c:455
netdev_queue_add_kobject net/core/net-sysfs.c:1706 [inline]
netdev_queue_update_kobjects+0x1f3/0x480 net/core/net-sysfs.c:1758
register_queue_kobjects net/core/net-sysfs.c:1819 [inline]
netdev_register_kobject+0x265/0x310 net/core/net-sysfs.c:2059
page last free pid 32330 tgid 32330 stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1140 [inline]
free_unref_page_prepare+0x968/0xa90 mm/page_alloc.c:2346
free_unref_page+0x37/0x3f0 mm/page_alloc.c:2486
discard_slab mm/slub.c:2453 [inline]
__put_partials+0xeb/0x130 mm/slub.c:2922
put_cpu_partial+0x17b/0x250 mm/slub.c:2997
__slab_free+0x302/0x410 mm/slub.c:4166
qlink_free mm/kasan/quarantine.c:160 [inline]
qlist_free_all+0x6d/0xd0 mm/kasan/quarantine.c:176
kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:283
__kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:324
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3813 [inline]
slab_alloc_node mm/slub.c:3860 [inline]
__do_kmalloc_node mm/slub.c:3980 [inline]
__kmalloc_node+0x1fd/0x4e0 mm/slub.c:3988
kmalloc_node include/linux/slab.h:610 [inline]
kvmalloc_node+0x72/0x190 mm/util.c:617
kvmalloc include/linux/slab.h:728 [inline]
kvmalloc_array include/linux/slab.h:746 [inline]
__ptr_ring_init_queue_alloc include/linux/ptr_ring.h:471 [inline]
ptr_ring_init include/linux/ptr_ring.h:489 [inline]
wg_packet_queue_init+0x92/0x2f0 drivers/net/wireguard/queueing.c:32
wg_newlink+0x3f2/0x720 drivers/net/wireguard/device.c:353
rtnl_newlink_create net/core/rtnetlink.c:3515 [inline]
__rtnl_newlink net/core/rtnetlink.c:3735 [inline]
rtnl_newlink+0x1591/0x20a0 net/core/rtnetlink.c:3748
rtnetlink_rcv_msg+0x887/0x1040 net/core/rtnetlink.c:6615
netlink_rcv_skb+0x1e5/0x430 net/netlink/af_netlink.c:2543
netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]
netlink_unicast+0x7ec/0x980 net/netlink/af_netlink.c:1367
Memory state around the buggy address:
ffff88802e2e0980: fc fc fc fc fc fc fc fc 05 fc fc fc fc fc fc fc
ffff88802e2e0a00: fc fc fc fc fa fc fc fc fc fc fc fc fc fc fc fc
>ffff88802e2e0a80: fa fc fc fc fc fc fc fc fc fc fc fc fa fc fc fc
^
ffff88802e2e0b00: fc fc fc fc fc fc fc fc 03 fc fc fc fc fc fc fc
ffff88802e2e0b80: fc fc fc fc fa fc fc fc fc fc fc fc fc fc fc fc
==================================================================
----------------
Code disassembly (best guess):
0: 90 nop
1: 90 nop
2: 90 nop
3: 90 nop
4: 90 nop
5: 90 nop
6: 90 nop
7: 90 nop
8: 90 nop
9: 90 nop
a: 90 nop
b: 90 nop
c: 90 nop
d: 90 nop
e: 90 nop
f: 90 nop
10: 90 nop
11: 41 57 push %r15
13: 41 56 push %r14
15: 41 54 push %r12
17: 53 push %rbx
18: 48 83 ec 10 sub $0x10,%rsp
1c: 65 48 8b 04 25 28 00 mov %gs:0x28,%rax
23: 00 00
25: 48 89 44 24 08 mov %rax,0x8(%rsp)
* 2a: 65 8b 1d 7c 53 9d 74 mov %gs:0x749d537c(%rip),%ebx # 0x749d53ad <-- trapping instruction
31: 65 8b 05 71 53 9d 74 mov %gs:0x749d5371(%rip),%eax # 0x749d53a9
38: a9 ff ff ff 7f test $0x7fffffff,%eax
3d: 74 26 je 0x65
3f: 65 gs
---
This report is generated by a bot. It may contain errors.
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syzbot engineers can be reached at syzk...@googlegroups.com.
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If you want to overwrite report's subsystems, reply with:
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If the report is a duplicate of another one, reply with:
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If you want to undo deduplication, reply with:
#syz undup
syzbot found the following issue on:
HEAD commit: 54be6c6c5ae8 Linux 6.8-rc3
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=15bf853fe80000
kernel config: https://syzkaller.appspot.com/x/.config?x=3d64aaed894826fe
dashboard link: https://syzkaller.appspot.com/bug?extid=096c7525a061cc9ef91d
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
CC: [core...@netfilter.org da...@davemloft.net edum...@google.com f...@strlen.de kad...@netfilter.org ku...@kernel.org linux-...@vger.kernel.org net...@vger.kernel.org netfilt...@vger.kernel.org pab...@redhat.com pa...@netfilter.org]
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/0b0923d370ec/disk-54be6c6c.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/b7928636ae34/vmlinux-54be6c6c.xz
kernel image: https://storage.googleapis.com/syzbot-assets/b30ae4da697b/bzImage-54be6c6c.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+096c75...@syzkaller.appspotmail.com
==================================================================
BUG: KASAN: slab-use-after-free in instrument_atomic_read include/linux/instrumented.h:68 [inline]
BUG: KASAN: slab-use-after-free in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
BUG: KASAN: slab-use-after-free in bitmap_port_gc_test net/netfilter/ipset/ip_set_bitmap_port.c:67 [inline]
BUG: KASAN: slab-use-after-free in bitmap_port_gc+0x146/0x4c0 net/netfilter/ipset/ip_set_bitmap_gen.h:277
Read of size 8 at addr ffff88802e2e0ae0 by task syz-executor.1/27596
CPU: 0 PID: 27596 Comm: syz-executor.1 Not tainted 6.8.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:377 [inline]
print_report+0x167/0x540 mm/kasan/report.c:488
kasan_report+0x142/0x180 mm/kasan/report.c:601
kasan_check_range+0x282/0x290 mm/kasan/generic.c:189
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
bitmap_port_gc_test net/netfilter/ipset/ip_set_bitmap_port.c:67 [inline]
bitmap_port_gc+0x146/0x4c0 net/netfilter/ipset/ip_set_bitmap_gen.h:277
call_timer_fn+0x180/0x600 kernel/time/timer.c:1700
expire_timers kernel/time/timer.c:1751 [inline]
__run_timers+0x621/0x830 kernel/time/timer.c:2038
run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2051
__do_softirq+0x2bd/0x942 kernel/softirq.c:553
invoke_softirq kernel/softirq.c:427 [inline]
__irq_exit_rcu+0xf1/0x1c0 kernel/softirq.c:632
irq_exit_rcu+0x9/0x30 kernel/softirq.c:644
sysvec_apic_timer_interrupt+0x97/0xb0 arch/x86/kernel/apic/apic.c:1076
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:check_preemption_disabled+0x19/0x120 lib/smp_processor_id.c:14
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 41 56 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 <65> 8b 1d 7c 53 9d 74 65 8b 05 71 53 9d 74 a9 ff ff ff 7f 74 26 65
RSP: 0018:ffffc90013ee7260 EFLAGS: 00000286
RAX: 98ad546621bd5400 RBX: 0000000000000001 RCX: ffff888025b3d940
RDX: ffff888025b3d940 RSI: ffffffff8bfe6700 RDI: ffffffff8bfe66c0
RBP: 0000000000000001 R08: ffffffff82014d38 R09: 1ffffffff2591284
R10: dffffc0000000000 R11: fffffbfff2591285 R12: dffffc0000000000
R13: 0000000000033c06 R14: ffffffff82014b76 R15: ffff88813fff90c0
rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline]
rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:700
rcu_read_unlock_sched include/linux/rcupdate.h:861 [inline]
pfn_valid+0x2c1/0x440 include/linux/mmzone.h:2026
page_table_check_set+0x25/0x700 mm/page_table_check.c:105
__page_table_check_ptes_set+0x220/0x280 mm/page_table_check.c:196
page_table_check_ptes_set include/linux/page_table_check.h:74 [inline]
set_ptes include/linux/pgtable.h:241 [inline]
copy_present_pte mm/memory.c:993 [inline]
copy_pte_range mm/memory.c:1102 [inline]
copy_pmd_range mm/memory.c:1187 [inline]
copy_pud_range mm/memory.c:1224 [inline]
copy_p4d_range mm/memory.c:1248 [inline]
copy_page_range+0x2c7e/0x4240 mm/memory.c:1346
dup_mmap kernel/fork.c:745 [inline]
dup_mm kernel/fork.c:1685 [inline]
copy_mm+0x12f4/0x21b0 kernel/fork.c:1734
copy_process+0x1d73/0x3fc0 kernel/fork.c:2497
kernel_clone+0x21d/0x8d0 kernel/fork.c:2902
__do_sys_clone kernel/fork.c:3045 [inline]
__se_sys_clone kernel/fork.c:3029 [inline]
__x64_sys_clone+0x258/0x2a0 kernel/fork.c:3029
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f62c447add3
Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
RSP: 002b:00007fff230e3b08 EFLAGS: 00000246
ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f62c447add3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000555556176750 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001
</TASK>
Allocated by task 2186:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:372 [inline]
__kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:389
kasan_kmalloc include/linux/kasan.h:211 [inline]
__do_kmalloc_node mm/slub.c:3981 [inline]
__kmalloc+0x22e/0x490 mm/slub.c:3994
init_map_port net/netfilter/ipset/ip_set_bitmap_port.c:234 [inline]
bitmap_port_create+0x324/0x7c0 net/netfilter/ipset/ip_set_bitmap_port.c:276
ip_set_create+0xa5e/0x1780 net/netfilter/ipset/ip_set_core.c:1103
nfnetlink_rcv_msg+0xbee/0x1190 net/netfilter/nfnetlink.c:302
netlink_rcv_skb+0x1e5/0x430 net/netlink/af_netlink.c:2543
nfnetlink_rcv+0x294/0x2650 net/netfilter/nfnetlink.c:659
netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]
netlink_unicast+0x7ec/0x980 net/netlink/af_netlink.c:1367
netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x223/0x270 net/socket.c:745
____sys_sendmsg+0x525/0x7d0 net/socket.c:2584
___sys_sendmsg net/socket.c:2638 [inline]
__sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
Freed by task 22329:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x4e/0x60 mm/kasan/generic.c:640
poison_slab_object+0xa6/0xe0 mm/kasan/common.c:241
__kasan_slab_free+0x34/0x70 mm/kasan/common.c:257
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2121 [inline]
slab_free mm/slub.c:4299 [inline]
kfree+0x14a/0x380 mm/slub.c:4409
bitmap_port_destroy+0x300/0x390 net/netfilter/ipset/ip_set_bitmap_gen.h:65
ip_set_destroy_set net/netfilter/ipset/ip_set_core.c:1180 [inline]
ip_set_net_exit+0x252/0x470 net/netfilter/ipset/ip_set_core.c:2381
ops_exit_list net/core/net_namespace.c:170 [inline]
cleanup_net+0x6dc/0xb90 net/core/net_namespace.c:618
process_one_work kernel/workqueue.c:2633 [inline]
process_scheduled_works+0x915/0x1420 kernel/workqueue.c:2706
worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
kthread+0x2f1/0x390 kernel/kthread.c:388
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
The buggy address belongs to the object at ffff88802e2e0ae0
which belongs to the cache kmalloc-8 of size 8
The buggy address is located 0 bytes inside of
freed 8-byte region [ffff88802e2e0ae0, ffff88802e2e0ae8)
The buggy address belongs to the physical page:
page:ffffea0000b8b800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2e2e0
flags: 0xfff00000000800(slab|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000800 ffff888014c41280 ffffea0002177fc0 dead000000000006
raw: 0000000000000000 00000000002a002a 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 32330, tgid 32330 (syz-executor.2), ts 2411372001560, free_ts 2411295968596
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x1ea/0x210 mm/page_alloc.c:1533
prep_new_page mm/page_alloc.c:1540 [inline]
get_page_from_freelist+0x33ea/0x3580 mm/page_alloc.c:3311
__alloc_pages+0x255/0x680 mm/page_alloc.c:4567
__alloc_pages_node include/linux/gfp.h:238 [inline]
alloc_pages_node include/linux/gfp.h:261 [inline]
alloc_slab_page+0x5f/0x160 mm/slub.c:2190
allocate_slab mm/slub.c:2354 [inline]
new_slab+0x84/0x2f0 mm/slub.c:2407
___slab_alloc+0xd17/0x13e0 mm/slub.c:3540
__slab_alloc mm/slub.c:3625 [inline]
__slab_alloc_node mm/slub.c:3678 [inline]
slab_alloc_node mm/slub.c:3850 [inline]
__do_kmalloc_node mm/slub.c:3980 [inline]
__kmalloc_node_track_caller+0x2d1/0x4e0 mm/slub.c:4001
kstrdup+0x3a/0x80 mm/util.c:62
__kernfs_new_node+0x9d/0x880 fs/kernfs/dir.c:611
kernfs_new_node+0x13a/0x240 fs/kernfs/dir.c:691
kernfs_create_dir_ns+0x43/0x120 fs/kernfs/dir.c:1052
sysfs_create_dir_ns+0x189/0x3a0 fs/sysfs/dir.c:59
create_dir lib/kobject.c:73 [inline]
kobject_add_internal+0x40d/0x8a0 lib/kobject.c:238
kobject_add_varg lib/kobject.c:372 [inline]
kobject_init_and_add+0x124/0x190 lib/kobject.c:455
netdev_queue_add_kobject net/core/net-sysfs.c:1706 [inline]
netdev_queue_update_kobjects+0x1f3/0x480 net/core/net-sysfs.c:1758
register_queue_kobjects net/core/net-sysfs.c:1819 [inline]
netdev_register_kobject+0x265/0x310 net/core/net-sysfs.c:2059
page last free pid 32330 tgid 32330 stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1140 [inline]
free_unref_page_prepare+0x968/0xa90 mm/page_alloc.c:2346
free_unref_page+0x37/0x3f0 mm/page_alloc.c:2486
discard_slab mm/slub.c:2453 [inline]
__put_partials+0xeb/0x130 mm/slub.c:2922
put_cpu_partial+0x17b/0x250 mm/slub.c:2997
__slab_free+0x302/0x410 mm/slub.c:4166
qlink_free mm/kasan/quarantine.c:160 [inline]
qlist_free_all+0x6d/0xd0 mm/kasan/quarantine.c:176
kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:283
__kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:324
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3813 [inline]
slab_alloc_node mm/slub.c:3860 [inline]
__do_kmalloc_node mm/slub.c:3980 [inline]
__kmalloc_node+0x1fd/0x4e0 mm/slub.c:3988
kmalloc_node include/linux/slab.h:610 [inline]
kvmalloc_node+0x72/0x190 mm/util.c:617
kvmalloc include/linux/slab.h:728 [inline]
kvmalloc_array include/linux/slab.h:746 [inline]
__ptr_ring_init_queue_alloc include/linux/ptr_ring.h:471 [inline]
ptr_ring_init include/linux/ptr_ring.h:489 [inline]
wg_packet_queue_init+0x92/0x2f0 drivers/net/wireguard/queueing.c:32
wg_newlink+0x3f2/0x720 drivers/net/wireguard/device.c:353
rtnl_newlink_create net/core/rtnetlink.c:3515 [inline]
__rtnl_newlink net/core/rtnetlink.c:3735 [inline]
rtnl_newlink+0x1591/0x20a0 net/core/rtnetlink.c:3748
rtnetlink_rcv_msg+0x887/0x1040 net/core/rtnetlink.c:6615
netlink_rcv_skb+0x1e5/0x430 net/netlink/af_netlink.c:2543
netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]
netlink_unicast+0x7ec/0x980 net/netlink/af_netlink.c:1367
Memory state around the buggy address:
ffff88802e2e0980: fc fc fc fc fc fc fc fc 05 fc fc fc fc fc fc fc
ffff88802e2e0a00: fc fc fc fc fa fc fc fc fc fc fc fc fc fc fc fc
>ffff88802e2e0a80: fa fc fc fc fc fc fc fc fc fc fc fc fa fc fc fc
^
ffff88802e2e0b00: fc fc fc fc fc fc fc fc 03 fc fc fc fc fc fc fc
ffff88802e2e0b80: fc fc fc fc fa fc fc fc fc fc fc fc fc fc fc fc
==================================================================
----------------
Code disassembly (best guess):
0: 90 nop
1: 90 nop
2: 90 nop
3: 90 nop
4: 90 nop
5: 90 nop
6: 90 nop
7: 90 nop
8: 90 nop
9: 90 nop
a: 90 nop
b: 90 nop
c: 90 nop
d: 90 nop
e: 90 nop
f: 90 nop
10: 90 nop
11: 41 57 push %r15
13: 41 56 push %r14
15: 41 54 push %r12
17: 53 push %rbx
18: 48 83 ec 10 sub $0x10,%rsp
1c: 65 48 8b 04 25 28 00 mov %gs:0x28,%rax
23: 00 00
25: 48 89 44 24 08 mov %rax,0x8(%rsp)
* 2a: 65 8b 1d 7c 53 9d 74 mov %gs:0x749d537c(%rip),%ebx # 0x749d53ad <-- trapping instruction
31: 65 8b 05 71 53 9d 74 mov %gs:0x749d5371(%rip),%eax # 0x749d53a9
38: a9 ff ff ff 7f test $0x7fffffff,%eax
3d: 74 26 je 0x65
3f: 65 gs
---
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