==================================================================
BUG: KASAN: slab-use-after-free in instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
BUG: KASAN: slab-use-after-free in atomic_dec_and_test include/linux/atomic/atomic-instrumented.h:1383 [inline]
BUG: KASAN: slab-use-after-free in gfs2_qd_dealloc+0x81/0xe0 fs/gfs2/quota.c:112
Write of size 4 at addr ffff88803374ca80 by task syz.0.0/5340
CPU: 0 UID: 0 PID: 5340 Comm: syz.0.0 Not tainted 6.16.0-rc7-syzkaller-00020-gf9af7b5d9349 #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:378 [inline]
print_report+0xca/0x230 mm/kasan/report.c:480
kasan_report+0x118/0x150 mm/kasan/report.c:593
check_region_inline mm/kasan/generic.c:-1 [inline]
kasan_check_range+0x2b0/0x2c0 mm/kasan/generic.c:189
instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
atomic_dec_and_test include/linux/atomic/atomic-instrumented.h:1383 [inline]
gfs2_qd_dealloc+0x81/0xe0 fs/gfs2/quota.c:112
rcu_do_batch kernel/rcu/tree.c:2576 [inline]
rcu_core+0xca5/0x1710 kernel/rcu/tree.c:2832
handle_softirqs+0x286/0x870 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:1050 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:_compound_head include/linux/page-flags.h:280 [inline]
RIP: 0010:virt_to_folio include/linux/mm.h:1180 [inline]
RIP: 0010:virt_to_slab mm/slab.h:211 [inline]
RIP: 0010:__memcg_slab_post_alloc_hook+0x27e/0x7f0 mm/memcontrol.c:3172
Code: d0 b9 8f 0b 4c 89 ff e8 80 b3 48 ff 49 89 c7 49 c1 ef 06 49 83 e7 c0 4f 8d 24 3e 49 83 c4 08 4c 89 e0 48 c1 e8 03 80 3c 28 00 <74> 08 4c 89 e7 e8 08 f7 f7 ff 49 8b 04 24 a8 01 0f 85 f5 02 00 00
RSP: 0018:ffffc9000d2b7840 EFLAGS: 00000246
RAX: 1ffffd40001fdbd1 RBX: ffffc9000d2b7910 RCX: 0000000000100000
RDX: ffffc9000db72000 RSI: 0000000000059386 RDI: 0000000000059387
RBP: dffffc0000000000 R08: ffffc9000d2b7910 R09: 00000000ea665200
R10: 000000000000000a R11: ffffffff81acfe40 R12: ffffea0000fede88
R13: 0000000000000000 R14: ffffea0000000000 R15: 0000000000fede80
memcg_slab_post_alloc_hook mm/slub.c:2180 [inline]
slab_post_alloc_hook mm/slub.c:4158 [inline]
slab_alloc_node mm/slub.c:4197 [inline]
kmem_cache_alloc_noprof+0x2bf/0x3c0 mm/slub.c:4204
alloc_empty_file+0x55/0x1d0 fs/file_table.c:234
path_openat+0x107/0x3830 fs/namei.c:4041
do_filp_open+0x1fa/0x410 fs/namei.c:4082
do_sys_openat2+0x121/0x1c0 fs/open.c:1437
do_sys_open fs/open.c:1452 [inline]
__do_sys_openat fs/open.c:1468 [inline]
__se_sys_openat fs/open.c:1463 [inline]
__x64_sys_openat+0x138/0x170 fs/open.c:1463
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa93658d310
Code: 48 89 44 24 20 75 93 44 89 54 24 0c e8 49 94 02 00 44 8b 54 24 0c 89 da 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 38 44 89 c7 89 44 24 0c e8 9c 94 02 00 8b 44
RSP: 002b:00007fa9374a1df0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fa93658d310
RDX: 0000000000000002 RSI: 00007fa9374a1eb0 RDI: 00000000ffffff9c
RBP: 00007fa9374a1eb0 R08: 0000000000000000 R09: 0000000000000084
R10: 0000000000000000 R11: 0000000000000293 R12: 000000000000001c
R13: 00007fa9374a1eb0 R14: 000000000001f791 R15: 0000200000000000
Allocated by task 5340:
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:4359
kmalloc_noprof include/linux/slab.h:905 [inline]
kzalloc_noprof include/linux/slab.h:1039 [inline]
init_sbd fs/gfs2/ops_fstype.c:78 [inline]
gfs2_fill_super+0x11c/0x20e0 fs/gfs2/ops_fstype.c:1128
get_tree_bdev_flags+0x40b/0x4d0 fs/super.c:1681
gfs2_get_tree+0x51/0x1e0 fs/gfs2/ops_fstype.c:1335
vfs_get_tree+0x92/0x2b0 fs/super.c:1804
do_new_mount+0x24a/0xa40 fs/namespace.c:3902
do_mount fs/namespace.c:4239 [inline]
__do_sys_mount fs/namespace.c:4450 [inline]
__se_sys_mount+0x317/0x410 fs/namespace.c:4427
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Freed by task 5340:
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:2381 [inline]
slab_free mm/slub.c:4643 [inline]
kfree+0x18e/0x440 mm/slub.c:4842
free_sbd fs/gfs2/ops_fstype.c:71 [inline]
gfs2_fill_super+0x153d/0x20e0 fs/gfs2/ops_fstype.c:1319
get_tree_bdev_flags+0x40b/0x4d0 fs/super.c:1681
gfs2_get_tree+0x51/0x1e0 fs/gfs2/ops_fstype.c:1335
vfs_get_tree+0x92/0x2b0 fs/super.c:1804
do_new_mount+0x24a/0xa40 fs/namespace.c:3902
do_mount fs/namespace.c:4239 [inline]
__do_sys_mount fs/namespace.c:4450 [inline]
__se_sys_mount+0x317/0x410 fs/namespace.c:4427
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
The buggy address belongs to the object at ffff88803374c000
which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 2688 bytes inside of
freed 8192-byte region [ffff88803374c000, ffff88803374e000)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x33748
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
ksm flags: 0x4fff00000000040(head|node=1|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 04fff00000000040 ffff88801a442280 ffffea0001112200 0000000000000003
raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000
head: 04fff00000000040 ffff88801a442280 ffffea0001112200 0000000000000003
head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000
head: 04fff00000000003 ffffea0000cdd201 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5318, tgid 5318 (syz-executor), ts 72796150632, free_ts 72792480384
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1704
prep_new_page mm/page_alloc.c:1712 [inline]
get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3669
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959
alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2419
alloc_slab_page mm/slub.c:2451 [inline]
allocate_slab+0x8a/0x3b0 mm/slub.c:2619
new_slab mm/slub.c:2673 [inline]
___slab_alloc+0xbfc/0x1480 mm/slub.c:3859
__slab_alloc mm/slub.c:3949 [inline]
__slab_alloc_node mm/slub.c:4024 [inline]
slab_alloc_node mm/slub.c:4185 [inline]
__kmalloc_cache_noprof+0x296/0x3d0 mm/slub.c:4354
kmalloc_noprof include/linux/slab.h:905 [inline]
kzalloc_noprof include/linux/slab.h:1039 [inline]
macvlan_port_create drivers/net/macvlan.c:1246 [inline]
macvlan_common_newlink+0x5a3/0x1980 drivers/net/macvlan.c:1484
macvtap_newlink+0x13c/0x1b0 drivers/net/macvtap.c:108
rtnl_newlink_create+0x30d/0xb00 net/core/rtnetlink.c:3823
__rtnl_newlink net/core/rtnetlink.c:3940 [inline]
rtnl_newlink+0x16d6/0x1c70 net/core/rtnetlink.c:4055
rtnetlink_rcv_msg+0x7cc/0xb70 net/core/rtnetlink.c:6944
netlink_rcv_skb+0x205/0x470 net/netlink/af_netlink.c:2552
netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
netlink_unicast+0x75c/0x8e0 net/netlink/af_netlink.c:1346
netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1896
sock_sendmsg_nosec net/socket.c:712 [inline]
__sock_sendmsg+0x219/0x270 net/socket.c:727
page last free pid 5318 tgid 5318 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1248 [inline]
__free_frozen_pages+0xc71/0xe70 mm/page_alloc.c:2706
discard_slab mm/slub.c:2717 [inline]
__put_partials+0x161/0x1c0 mm/slub.c:3186
put_cpu_partial+0x17c/0x250 mm/slub.c:3261
__slab_free+0x2f7/0x400 mm/slub.c:4513
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x97/0x140 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:4148 [inline]
slab_alloc_node mm/slub.c:4197 [inline]
__kmalloc_cache_noprof+0x1be/0x3d0 mm/slub.c:4354
kmalloc_noprof include/linux/slab.h:905 [inline]
kzalloc_noprof include/linux/slab.h:1039 [inline]
ref_tracker_alloc+0x133/0x460 lib/ref_tracker.c:203
__netdev_tracker_alloc include/linux/netdevice.h:4341 [inline]
netdev_hold include/linux/netdevice.h:4370 [inline]
netdev_queue_add_kobject net/core/net-sysfs.c:1973 [inline]
netdev_queue_update_kobjects+0x1d1/0x6c0 net/core/net-sysfs.c:2035
register_queue_kobjects net/core/net-sysfs.c:2098 [inline]
netdev_register_kobject+0x236/0x2f0 net/core/net-sysfs.c:2340
register_netdevice+0x126c/0x1ae0 net/core/dev.c:11105
veth_newlink+0x42f/0xa50 drivers/net/veth.c:1855
rtnl_newlink_create+0x30d/0xb00 net/core/rtnetlink.c:3823
__rtnl_newlink net/core/rtnetlink.c:3940 [inline]
rtnl_newlink+0x16d6/0x1c70 net/core/rtnetlink.c:4055
rtnetlink_rcv_msg+0x7cc/0xb70 net/core/rtnetlink.c:6944
Memory state around the buggy address:
ffff88803374c980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88803374ca00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88803374ca80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88803374cb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88803374cb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess), 3 bytes skipped:
0: 0b 4c 89 ff or -0x1(%rcx,%rcx,4),%ecx
4: e8 80 b3 48 ff call 0xff48b389
9: 49 89 c7 mov %rax,%r15
c: 49 c1 ef 06 shr $0x6,%r15
10: 49 83 e7 c0 and $0xffffffffffffffc0,%r15
14: 4f 8d 24 3e lea (%r14,%r15,1),%r12
18: 49 83 c4 08 add $0x8,%r12
1c: 4c 89 e0 mov %r12,%rax
1f: 48 c1 e8 03 shr $0x3,%rax
23: 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1)
* 27: 74 08 je 0x31 <-- trapping instruction
29: 4c 89 e7 mov %r12,%rdi
2c: e8 08 f7 f7 ff call 0xfff7f739
31: 49 8b 04 24 mov (%r12),%rax
35: a8 01 test $0x1,%al
37: 0f 85 f5 02 00 00 jne 0x332