BUG: Bad rss-counter state mm:00000000a505bbcf type:MM_FILEPAGES val:33
BUG: Bad rss-counter state mm:00000000a505bbcf type:MM_ANONPAGES val:22
==================================================================
BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0
Read of size 8 at addr ffff888009553140 by task sshd/221
CPU: 0 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
dump_stack_lvl+0x91/0xf0
print_report+0xcc/0x620
kasan_report+0xbe/0xf0
vma_interval_tree_remove+0xc75/0xec0
vma_prepare+0xc54/0x11a0
__split_vma+0x5af/0x950
do_vmi_align_munmap+0x2ba/0x11f0
do_vmi_munmap+0x1f1/0x2b0
mmap_region+0x1f9/0x2660
do_mmap+0x854/0xf00
vm_mmap_pgoff+0x1a6/0x3a0
ksys_mmap_pgoff+0x3af/0x500
do_syscall_64+0x3f/0x90
entry_SYSCALL_64_after_hwframe+0x6e/0xd8
RIP: 0033:0x7fc0f2dddd82
Code: eb aa 66 0f 1f 44 00 00 41 f7 c1 ff 0f 00 00 75 27 55 48 89 fd 53 89 cb 48 85 ff 74 33 41 89 da 48 89 ef b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 56 5b 5d c3 0f 1f 00 c7 05 ae 03 01 00 16 00
RSP: 002b:00007ffd52cb6308 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fc0f2dddd82
RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fc0f2217000
RBP: 00007fc0f2217000 R08: 0000000000000009 R09: 0000000000001000
R10: 0000000000000812 R11: 0000000000000206 R12: 000055bd00e84ec0
R13: 00007ffd52cb6320 R14: 00007ffd52cb6350 R15: 00007ffd52cb66b0
Allocated by task 205:
kasan_save_stack+0x22/0x50
kasan_set_track+0x25/0x30
__kasan_slab_alloc+0x59/0x70
kmem_cache_alloc+0x16b/0x370
vm_area_dup+0x20/0x160
__split_vma+0x170/0x950
split_vma+0xc6/0x110
mprotect_fixup+0x8d2/0xb30
do_mprotect_pkey+0x87e/0xd40
__x64_sys_mprotect+0x78/0xc0
do_syscall_64+0x3f/0x90
entry_SYSCALL_64_after_hwframe+0x6e/0xd8
Freed by task 205:
kasan_save_stack+0x22/0x50
kasan_set_track+0x25/0x30
kasan_save_free_info+0x2b/0x50
__kasan_slab_free+0x10a/0x190
kmem_cache_free+0x10d/0x4d0
rcu_core+0x8c8/0x2860
__do_softirq+0x1b7/0x7d4
Last potentially related work creation:
kasan_save_stack+0x22/0x50
__kasan_record_aux_stack+0x8e/0xa0
__call_rcu_common.constprop.0+0x6a/0xb90
remove_vma+0x139/0x170
do_vmi_align_munmap+0xd4a/0x11f0
do_vmi_munmap+0x1f1/0x2b0
__vm_munmap+0x138/0x3a0
__x64_sys_munmap+0x59/0x80
do_syscall_64+0x3f/0x90
entry_SYSCALL_64_after_hwframe+0x6e/0xd8
The buggy address belongs to the object at ffff8880095530e8
which belongs to the cache vm_area_struct of size 168
The buggy address is located 88 bytes inside of
freed 168-byte region [ffff8880095530e8, ffff888009553190)
The buggy address belongs to the physical page:
page:000000009a4ae7dc refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x9553
memcg:ffff88800d5f7701
flags: 0x100000000000200(slab|node=0|zone=1)
page_type: 0xffffffff()
raw: 0100000000000200 ffff8880087a0c80 ffffea0000373640 0000000000000006
raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d5f7701
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff888009553000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888009553080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb
>ffff888009553100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888009553180: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb
ffff888009553200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc
==================================================================
BUG: Bad rss-counter state mm:000000008838bcba type:MM_FILEPAGES val:33
BUG: Bad rss-counter state mm:000000008838bcba type:MM_ANONPAGES val:22
BUG: Bad rss-counter state mm:000000005ea4488d type:MM_FILEPAGES val:33
BUG: Bad rss-counter state mm:000000005ea4488d type:MM_ANONPAGES val:22
general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 PID: 237 Comm: sshd Tainted: G B 6.4.0-rc7-next-20230620 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:__rb_insert_augmented+0x78/0x8b0
Code: ea 48 c1 ea 03 42 80 3c 2a 00 0f 85 65 05 00 00 4c 8b 65 00 41 f6 c4 01 0f 85 18 05 00 00 4d 8d 44 24 08 4c 89 c2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 55 05 00 00 4d 8b 74 24 08 49 39 ee 0f 84 77
RSP: 0018:ffff88801ca4f8a8 EFLAGS: 00010212
RAX: ffff8880193d4140 RBX: ffff88801bcfeec0 RCX: 1ffff1100379fdd8
RDX: 0000000000000001 RSI: ffff8880193d4140 RDI: ffff88801bcfeec0
RBP: ffff888019b2d698 R08: 0000000000000008 R09: 0000000000000000
R10: 0000000000000000 R11: 00000000000b6a61 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88801ca4f988 R15: ffffffff816e6340
FS: 00007fe57970b900(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe5796b2000 CR3: 0000000015bd2000 CR4: 0000000000350ef0
Call Trace:
vma_prepare+0xa1a/0x11a0
__split_vma+0x5af/0x950
do_vmi_align_munmap+0x361/0x11f0
do_vmi_munmap+0x1f1/0x2b0
mmap_region+0x1f9/0x2660
do_mmap+0x854/0xf00
vm_mmap_pgoff+0x1a6/0x3a0
ksys_mmap_pgoff+0x3af/0x500
do_syscall_64+0x3f/0x90
entry_SYSCALL_64_after_hwframe+0x6e/0xd8
RIP: 0033:0x7fe57a29dd82
Code: eb aa 66 0f 1f 44 00 00 41 f7 c1 ff 0f 00 00 75 27 55 48 89 fd 53 89 cb 48 85 ff 74 33 41 89 da 48 89 ef b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 56 5b 5d c3 0f 1f 00 c7 05 ae 03 01 00 16 00
RSP: 002b:00007ffdc5f087d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fe57a29dd82
RDX: 0000000000000005 RSI: 0000000000003000 RDI: 00007fe5796ab000
RBP: 00007fe5796ab000 R08: 0000000000000008 R09: 0000000000002000
R10: 0000000000000812 R11: 0000000000000206 R12: 000056241a61cea0
R13: 00007ffdc5f087f0 R14: 00007ffdc5f08820 R15: 00007ffdc5f08b80
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__rb_insert_augmented+0x78/0x8b0
Code: ea 48 c1 ea 03 42 80 3c 2a 00 0f 85 65 05 00 00 4c 8b 65 00 41 f6 c4 01 0f 85 18 05 00 00 4d 8d 44 24 08 4c 89 c2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 55 05 00 00 4d 8b 74 24 08 49 39 ee 0f 84 77
RSP: 0018:ffff88801ca4f8a8 EFLAGS: 00010212
RAX: ffff8880193d4140 RBX: ffff88801bcfeec0 RCX: 1ffff1100379fdd8
RDX: 0000000000000001 RSI: ffff8880193d4140 RDI: ffff88801bcfeec0
RBP: ffff888019b2d698 R08: 0000000000000008 R09: 0000000000000000
R10: 0000000000000000 R11: 00000000000b6a61 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88801ca4f988 R15: ffffffff816e6340
FS: 00007fe57970b900(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe5796b2000 CR3: 0000000015bd2000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 48 c1 ea 03 shr $0x3,%rdx
4: 42 80 3c 2a 00 cmpb $0x0,(%rdx,%r13,1)
9: 0f 85 65 05 00 00 jne 0x574
f: 4c 8b 65 00 mov 0x0(%rbp),%r12
13: 41 f6 c4 01 test $0x1,%r12b
17: 0f 85 18 05 00 00 jne 0x535
1d: 4d 8d 44 24 08 lea 0x8(%r12),%r8
22: 4c 89 c2 mov %r8,%rdx
25: 48 c1 ea 03 shr $0x3,%rdx
* 29: 42 80 3c 2a 00 cmpb $0x0,(%rdx,%r13,1) <-- trapping instruction
2e: 0f 85 55 05 00 00 jne 0x589
34: 4d 8b 74 24 08 mov 0x8(%r12),%r14
39: 49 39 ee cmp %rbp,%r14
3c: 0f .byte 0xf
3d: 84 .byte 0x84
3e: 77 .byte 0x77