==================================================================
BUG: KASAN: slab-use-after-free in __lock_acquire+0x2dd6/0x3b30 kernel/locking/lockdep.c:5005
Read of size 8 at addr ffff8880123b3818 by task syz-executor.0/7249
CPU: 0 PID: 7249 Comm: syz-executor.0 Not tainted 6.9.0-rc7-syzkaller-00012-gdccb07f2914c #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
print_address_description mm/kasan/report.c:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report+0xd9/0x110 mm/kasan/report.c:601
__lock_acquire+0x2dd6/0x3b30 kernel/locking/lockdep.c:5005
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
p9_tag_remove net/9p/client.c:394 [inline]
p9_req_put net/9p/client.c:402 [inline]
p9_req_put+0xca/0x250 net/9p/client.c:399
req_done+0x1e7/0x2f0 net/9p/trans_virtio.c:147
vring_interrupt drivers/virtio/virtio_ring.c:2595 [inline]
vring_interrupt+0x31b/0x400 drivers/virtio/virtio_ring.c:2570
__handle_irq_event_percpu+0x229/0x7c0 kernel/irq/handle.c:158
handle_irq_event_percpu kernel/irq/handle.c:193 [inline]
handle_irq_event+0xab/0x1e0 kernel/irq/handle.c:210
handle_edge_irq+0x263/0xd10 kernel/irq/chip.c:831
generic_handle_irq_desc include/linux/irqdesc.h:161 [inline]
handle_irq arch/x86/kernel/irq.c:238 [inline]
__common_interrupt+0xde/0x250 arch/x86/kernel/irq.c:257
common_interrupt+0xab/0xd0 arch/x86/kernel/irq.c:247
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:194
Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 16 1f 96 f6 48 89 df e8 4e 9b 96 f6 f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 01 00 00 00 e8 35 e1 87 f6 65 8b 05 26 34 2d 75 85 c0 74 16 5b
RSP: 0018:ffffc9000d1a7b78 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffff88801b25d278 RCX: 1ffffffff1f3ad41
RDX: 0000000000000000 RSI: ffffffff8b0cb860 RDI: ffffffff8b6f15a0
RBP: 0000000000000287 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8f9dac97 R11: ffffffff8162f450 R12: 0000000000000001
R13: ffff88801b25c894 R14: ffff88801b25d278 R15: ffffc9000d1a7bd8
class_raw_spinlock_irqsave_destructor include/linux/spinlock.h:553 [inline]
try_to_wake_up+0x5d7/0x13e0 kernel/sched/core.c:4262
wake_up_process kernel/sched/core.c:4510 [inline]
wake_up_q+0x91/0x140 kernel/sched/core.c:1029
futex_wake+0x43e/0x4e0 kernel/futex/waitwake.c:199
do_futex+0x1e5/0x350 kernel/futex/syscalls.c:107
__do_sys_futex_time32 kernel/futex/syscalls.c:509 [inline]
__se_sys_futex_time32 kernel/futex/syscalls.c:492 [inline]
__ia32_sys_futex_time32+0x1da/0x460 kernel/futex/syscalls.c:492
do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
__do_fast_syscall_32+0x75/0x120 arch/x86/entry/common.c:386
do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411
entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf727e579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000ffc0d42c EFLAGS: 00000246 ORIG_RAX: 00000000000000f0
RAX: ffffffffffffffda RBX: 00000000f73fafc8 RCX: 0000000000000081
RDX: 00000000000f4240 RSI: 0000000020000080 RDI: 0000000000000000
RBP: 00000000f73d5ff4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Allocated by task 7250:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:370 [inline]
__kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:387
kmalloc include/linux/slab.h:628 [inline]
p9_client_create+0xcf/0x11b0 net/9p/client.c:980
v9fs_session_init+0x1f8/0x1a80 fs/9p/v9fs.c:410
v9fs_mount+0xc6/0xaa0 fs/9p/vfs_super.c:122
legacy_get_tree+0x109/0x220 fs/fs_context.c:662
vfs_get_tree+0x8f/0x380 fs/super.c:1779
do_new_mount fs/namespace.c:3352 [inline]
path_mount+0x6e1/0x1f10 fs/namespace.c:3679
do_mount fs/namespace.c:3692 [inline]
__do_sys_mount fs/namespace.c:3898 [inline]
__se_sys_mount fs/namespace.c:3875 [inline]
__ia32_sys_mount+0x295/0x320 fs/namespace.c:3875
do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
__do_fast_syscall_32+0x75/0x120 arch/x86/entry/common.c:386
do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411
entry_SYSENTER_compat_after_hwframe+0x84/0x8e
Freed by task 7250:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
poison_slab_object mm/kasan/common.c:240 [inline]
__kasan_slab_free+0x11d/0x1a0 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2111 [inline]
slab_free mm/slub.c:4286 [inline]
kfree+0x129/0x3a0 mm/slub.c:4396
p9_client_create+0x9ca/0x11b0 net/9p/client.c:1051
v9fs_session_init+0x1f8/0x1a80 fs/9p/v9fs.c:410
v9fs_mount+0xc6/0xaa0 fs/9p/vfs_super.c:122
legacy_get_tree+0x109/0x220 fs/fs_context.c:662
vfs_get_tree+0x8f/0x380 fs/super.c:1779
do_new_mount fs/namespace.c:3352 [inline]
path_mount+0x6e1/0x1f10 fs/namespace.c:3679
do_mount fs/namespace.c:3692 [inline]
__do_sys_mount fs/namespace.c:3898 [inline]
__se_sys_mount fs/namespace.c:3875 [inline]
__ia32_sys_mount+0x295/0x320 fs/namespace.c:3875
do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
__do_fast_syscall_32+0x75/0x120 arch/x86/entry/common.c:386
do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411
entry_SYSENTER_compat_after_hwframe+0x84/0x8e
The buggy address belongs to the object at ffff8880123b3800
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 24 bytes inside of
freed 512-byte region [ffff8880123b3800, ffff8880123b3a00)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x123b0
head: order:2 entire_mapcount:0 nr_pages_mapped:0 pincount:0
ksm flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000840 ffff888014c42c80 ffffea00007c6200 0000000000000003
raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
head: 00fff00000000840 ffff888014c42c80 ffffea00007c6200 0000000000000003
head: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
head: 00fff00000000002 ffffea000048ec01 dead000000000122 00000000ffffffff
head: 0000000400000000 0000000000000000 00000000ffffffff 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), pid 12, tgid 1430124939 (kworker/u32:1), ts 12, free_ts 134124130269
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d4/0x350 mm/page_alloc.c:1534
prep_new_page mm/page_alloc.c:1541 [inline]
get_page_from_freelist+0xa28/0x3780 mm/page_alloc.c:3317
__alloc_pages+0x22b/0x2460 mm/page_alloc.c:4575
__alloc_pages_node include/linux/gfp.h:238 [inline]
alloc_pages_node include/linux/gfp.h:261 [inline]
alloc_slab_page mm/slub.c:2180 [inline]
allocate_slab mm/slub.c:2343 [inline]
new_slab+0xcc/0x3a0 mm/slub.c:2396
___slab_alloc+0x670/0x16d0 mm/slub.c:3530
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3615
__slab_alloc_node mm/slub.c:3668 [inline]
slab_alloc_node mm/slub.c:3841 [inline]
kmalloc_trace+0x306/0x340 mm/slub.c:3998
kmalloc include/linux/slab.h:628 [inline]
kzalloc include/linux/slab.h:749 [inline]
inetdev_init+0x66/0x580 net/ipv4/devinet.c:269
inetdev_event+0xb17/0x1800 net/ipv4/devinet.c:1560
notifier_call_chain+0xb9/0x410 kernel/notifier.c:93
call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:1950
call_netdevice_notifiers_extack net/core/dev.c:1988 [inline]
call_netdevice_notifiers net/core/dev.c:2002 [inline]
register_netdevice+0x157d/0x1c40 net/core/dev.c:10316
nsim_init_netdevsim drivers/net/netdevsim/netdev.c:376 [inline]
nsim_create+0x467/0x600 drivers/net/netdevsim/netdev.c:434
__nsim_dev_port_add+0x3bf/0x700 drivers/net/netdevsim/dev.c:1390
nsim_dev_port_add_all drivers/net/netdevsim/dev.c:1446 [inline]
nsim_dev_reload_create drivers/net/netdevsim/dev.c:1498 [inline]
nsim_dev_reload_up+0x5b6/0x860 drivers/net/netdevsim/dev.c:985
devlink_reload+0x2c4/0x760 net/devlink/dev.c:474
page last free pid 7176 tgid 7175 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1141 [inline]
free_unref_page_prepare+0x527/0xb10 mm/page_alloc.c:2347
free_unref_page+0x33/0x3c0 mm/page_alloc.c:2487
stack_depot_save_flags+0x2da/0x900 lib/stackdepot.c:673
kasan_save_stack+0x42/0x60 mm/kasan/common.c:48
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
poison_slab_object mm/kasan/common.c:240 [inline]
__kasan_slab_free+0x11d/0x1a0 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2111 [inline]
slab_free mm/slub.c:4286 [inline]
kfree+0x129/0x3a0 mm/slub.c:4396
kvfree+0x47/0x50 mm/util.c:680
bitmap_ipmac_destroy+0xe2/0x160 net/netfilter/ipset/ip_set_bitmap_gen.h:65
ip_set_destroy_set+0x65/0x100 net/netfilter/ipset/ip_set_core.c:1181
ip_set_destroy+0x825/0xbc0 net/netfilter/ipset/ip_set_core.c:1235
nfnetlink_rcv_msg+0x9c3/0x11e0 net/netfilter/nfnetlink.c:302
netlink_rcv_skb+0x165/0x410 net/netlink/af_netlink.c:2559
nfnetlink_rcv+0x1b4/0x430 net/netfilter/nfnetlink.c:659
netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]
netlink_unicast+0x542/0x820 net/netlink/af_netlink.c:1361
Memory state around the buggy address:
ffff8880123b3700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff8880123b3780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8880123b3800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880123b3880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880123b3900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess):
0: f5 cmc
1: 53 push %rbx
2: 48 8b 74 24 10 mov 0x10(%rsp),%rsi
7: 48 89 fb mov %rdi,%rbx
a: 48 83 c7 18 add $0x18,%rdi
e: e8 16 1f 96 f6 call 0xf6961f29
13: 48 89 df mov %rbx,%rdi
16: e8 4e 9b 96 f6 call 0xf6969b69
1b: f7 c5 00 02 00 00 test $0x200,%ebp
21: 75 23 jne 0x46
23: 9c pushf
24: 58 pop %rax
25: f6 c4 02 test $0x2,%ah
28: 75 37 jne 0x61
* 2a: bf 01 00 00 00 mov $0x1,%edi <-- trapping instruction
2f: e8 35 e1 87 f6 call 0xf687e169
34: 65 8b 05 26 34 2d 75 mov %gs:0x752d3426(%rip),%eax # 0x752d3461
3b: 85 c0 test %eax,%eax
3d: 74 16 je 0x55
3f: 5b pop %rbx