ffff888067000bd0, ffff8880287ac000, gfs2_qd_dealloc
==================================================================
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:1375 [inline]
BUG: KASAN: slab-use-after-free in gfs2_qd_dealloc+0x9a/0x100 fs/gfs2/quota.c:116
Write of size 4 at addr ffff8880287aca78 by task syz-executor.0/5390

CPU: 1 PID: 5390 Comm: syz-executor.0 Not tainted 6.6.0-rc3-syzkaller-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:364 [inline]
 print_report+0x163/0x540 mm/kasan/report.c:475
 kasan_report+0x175/0x1b0 mm/kasan/report.c:588
 kasan_check_range+0x27e/0x290 mm/kasan/generic.c:187
 instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
 atomic_dec_and_test include/linux/atomic/atomic-instrumented.h:1375 [inline]
 gfs2_qd_dealloc+0x9a/0x100 fs/gfs2/quota.c:116
 rcu_do_batch kernel/rcu/tree.c:2139 [inline]
 rcu_core+0xacf/0x1790 kernel/rcu/tree.c:2403
 __do_softirq+0x2ab/0x908 kernel/softirq.c:553
 invoke_softirq kernel/softirq.c:427 [inline]
 __irq_exit_rcu+0xf1/0x1b0 kernel/softirq.c:632
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:644
 sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1074
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:check_kcov_mode kernel/kcov.c:175 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:236 [inline]
RIP: 0010:__sanitizer_cov_trace_cmp4+0x2e/0x90 kernel/kcov.c:278
Code: 4c 8b 04 24 65 48 8b 15 c0 ac 75 7e 65 8b 05 c1 ac 75 7e a9 00 01 ff 00 74 10 a9 00 01 00 00 74 5b 83 ba 04 16 00 00 00 74 52 <8b> 82 e0 15 00 00 83 f8 03 75 47 48 8b 8a e8 15 00 00 44 8b 8a e4
RSP: 0018:ffffc90004b9f3e0 EFLAGS: 00000246
RAX: 0000000080000001 RBX: 00000000000a0000 RCX: 00000000000a0001
RDX: ffff8880783f9dc0 RSI: 000000000000c5b9 RDI: 00000000000a0000
RBP: 000000000000c5b9 R08: ffffffff813da069 R09: ffffc90004b9f5b0
R10: 0000000000000003 R11: ffff8880783f9dc0 R12: ffffc90004b9f4c0
R13: 00000000000a0001 R14: ffffffff8b000000 R15: ffffffff81c5b96d
 orc_find arch/x86/kernel/unwind_orc.c:211 [inline]
 unwind_next_frame+0x249/0x29e0 arch/x86/kernel/unwind_orc.c:494
 arch_stack_walk+0x146/0x1a0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x117/0x1c0 kernel/stacktrace.c:122
 save_stack+0xfa/0x1e0 mm/page_owner.c:128
 __reset_page_owner+0x4f/0x190 mm/page_owner.c:149
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1136 [inline]
 free_unref_page_prepare+0x8c3/0x9f0 mm/page_alloc.c:2312
 free_unref_page_list+0x596/0x830 mm/page_alloc.c:2451
 release_pages+0x2113/0x23f0 mm/swap.c:1042
 __folio_batch_release+0x84/0x100 mm/swap.c:1062
 folio_batch_release include/linux/pagevec.h:83 [inline]
 truncate_inode_pages_range+0x45d/0x11a0 mm/truncate.c:371
 kill_bdev block/bdev.c:76 [inline]
 blkdev_flush_mapping+0x15a/0x2b0 block/bdev.c:630
 blkdev_put_whole block/bdev.c:661 [inline]
 blkdev_put+0x4a9/0x770 block/bdev.c:898
 deactivate_locked_super+0xa4/0x110 fs/super.c:481
 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1254
 task_work_run+0x24a/0x300 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:171
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296
 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f9b9547de17
Code: b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b0 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffd8d15c318 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f9b9547de17
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffd8d15c3d0
RBP: 00007ffd8d15c3d0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffd8d15d490
R13: 00007f9b954c73b9 R14: 000000000001da1c R15: 0000000000000003
 </TASK>

Allocated by task 5823:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
 ____kasan_kmalloc mm/kasan/common.c:374 [inline]
 __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:383
 kmalloc include/linux/slab.h:599 [inline]
 kzalloc include/linux/slab.h:720 [inline]
 init_sbd fs/gfs2/ops_fstype.c:78 [inline]
 gfs2_fill_super+0x138/0x2600 fs/gfs2/ops_fstype.c:1165
 get_tree_bdev+0x416/0x5b0 fs/super.c:1577
 gfs2_get_tree+0x54/0x210 fs/gfs2/ops_fstype.c:1349
 vfs_get_tree+0x8c/0x280 fs/super.c:1750
 do_new_mount+0x28f/0xae0 fs/namespace.c:3335
 do_mount fs/namespace.c:3675 [inline]
 __do_sys_mount fs/namespace.c:3884 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3861
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Freed by task 5390:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
 kasan_save_free_info+0x28/0x40 mm/kasan/generic.c:522
 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236
 kasan_slab_free include/linux/kasan.h:164 [inline]
 slab_free_hook mm/slub.c:1800 [inline]
 slab_free_freelist_hook mm/slub.c:1826 [inline]
 slab_free mm/slub.c:3809 [inline]
 __kmem_cache_free+0x25f/0x3b0 mm/slub.c:3822
 generic_shutdown_super+0x13a/0x2c0 fs/super.c:693
 kill_block_super+0x41/0x70 fs/super.c:1646
 deactivate_locked_super+0xa4/0x110 fs/super.c:481
 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1254
 task_work_run+0x24a/0x300 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:171
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296
 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

The buggy address belongs to the object at ffff8880287ac000
 which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 2680 bytes inside of
 freed 8192-byte region [ffff8880287ac000, ffff8880287ae000)

The buggy address belongs to the physical page:
page:ffffea0000a1ea00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x287a8
head:ffffea0000a1ea00 order:3 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 ffff888012842280 ffffea00009f2200 dead000000000003
raw: 0000000000000000 0000000080020002 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d28c0(GFP_NOWAIT|__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 4696, tgid 4696 (dhcpcd), ts 79825370949, free_ts 79824505174
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1536
 prep_new_page mm/page_alloc.c:1543 [inline]
 get_page_from_freelist+0x31db/0x3360 mm/page_alloc.c:3170
 __alloc_pages+0x255/0x670 mm/page_alloc.c:4426
 alloc_slab_page+0x6a/0x160 mm/slub.c:1870
 allocate_slab mm/slub.c:2017 [inline]
 new_slab+0x84/0x2f0 mm/slub.c:2070
 ___slab_alloc+0xc85/0x1310 mm/slub.c:3223
 __slab_alloc mm/slub.c:3322 [inline]
 __slab_alloc_node mm/slub.c:3375 [inline]
 slab_alloc_node mm/slub.c:3468 [inline]
 __kmem_cache_alloc_node+0x1af/0x270 mm/slub.c:3517
 __do_kmalloc_node mm/slab_common.c:1022 [inline]
 __kmalloc_node_track_caller+0xa5/0x230 mm/slab_common.c:1043
 kmalloc_reserve+0xf3/0x260 net/core/skbuff.c:581
 __alloc_skb+0x1b1/0x420 net/core/skbuff.c:650
 alloc_skb include/linux/skbuff.h:1286 [inline]
 netlink_dump+0x20b/0xcc0 net/netlink/af_netlink.c:2233
 netlink_recvmsg+0x6b9/0x11d0 net/netlink/af_netlink.c:1992
 sock_recvmsg_nosec net/socket.c:1027 [inline]
 sock_recvmsg net/socket.c:1049 [inline]
 ____sys_recvmsg+0x2a4/0x580 net/socket.c:2760
 ___sys_recvmsg net/socket.c:2802 [inline]
 __sys_recvmsg+0x2f0/0x3d0 net/socket.c:2832
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1136 [inline]
 free_unref_page_prepare+0x8c3/0x9f0 mm/page_alloc.c:2312
 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2405
 __slab_free+0x2f6/0x390 mm/slub.c:3715
 qlink_free mm/kasan/quarantine.c:166 [inline]
 qlist_free_all+0x75/0xe0 mm/kasan/quarantine.c:185
 kasan_quarantine_reduce+0x14b/0x160 mm/kasan/quarantine.c:292
 __kasan_slab_alloc+0x23/0x70 mm/kasan/common.c:305
 kasan_slab_alloc include/linux/kasan.h:188 [inline]
 slab_post_alloc_hook+0x67/0x3d0 mm/slab.h:762
 slab_alloc_node mm/slub.c:3478 [inline]
 __kmem_cache_alloc_node+0x141/0x270 mm/slub.c:3517
 kmalloc_trace+0x2a/0xe0 mm/slab_common.c:1114
 kmalloc include/linux/slab.h:599 [inline]
 kzalloc include/linux/slab.h:720 [inline]
 kernfs_fop_open+0x3e7/0xcc0 fs/kernfs/file.c:670
 do_dentry_open+0x80f/0x1430 fs/open.c:929
 do_open fs/namei.c:3639 [inline]
 path_openat+0x27bb/0x3180 fs/namei.c:3796
 do_filp_open+0x234/0x490 fs/namei.c:3823
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1422
 do_sys_open fs/open.c:1437 [inline]
 __do_sys_openat fs/open.c:1453 [inline]
 __se_sys_openat fs/open.c:1448 [inline]
 __x64_sys_openat+0x247/0x290 fs/open.c:1448
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80

Memory state around the buggy address:
 ffff8880287ac900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880287ac980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880287aca00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                                ^
 ffff8880287aca80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880287acb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess):
   0:	4c 8b 04 24          	mov    (%rsp),%r8
   4:	65 48 8b 15 c0 ac 75 	mov    %gs:0x7e75acc0(%rip),%rdx        # 0x7e75accc
   b:	7e
   c:	65 8b 05 c1 ac 75 7e 	mov    %gs:0x7e75acc1(%rip),%eax        # 0x7e75acd4
  13:	a9 00 01 ff 00       	test   $0xff0100,%eax
  18:	74 10                	je     0x2a
  1a:	a9 00 01 00 00       	test   $0x100,%eax
  1f:	74 5b                	je     0x7c
  21:	83 ba 04 16 00 00 00 	cmpl   $0x0,0x1604(%rdx)
  28:	74 52                	je     0x7c
* 2a:	8b 82 e0 15 00 00    	mov    0x15e0(%rdx),%eax <-- trapping instruction
  30:	83 f8 03             	cmp    $0x3,%eax
  33:	75 47                	jne    0x7c
  35:	48 8b 8a e8 15 00 00 	mov    0x15e8(%rdx),%rcx
  3c:	44                   	rex.R
  3d:	8b                   	.byte 0x8b
  3e:	8a e4                	mov    %ah,%ah