syzkaller login: [ 31.628740] BUG: Bad rss-counter state mm:000000006f6a9a60 type:MM_FILEPAGES val:33 [ 31.630833] BUG: Bad rss-counter state mm:000000006f6a9a60 type:MM_ANONPAGES val:22 [ 31.794238] ================================================================== [ 31.795126] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.796053] Read of size 8 at addr ffff88800e2834e0 by task sshd/220 [ 31.796814] [ 31.797027] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 31.798086] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.799053] Call Trace: [ 31.799374] [ 31.799658] dump_stack_lvl+0x91/0xf0 [ 31.800139] print_report+0xcc/0x620 [ 31.800620] ? __virt_addr_valid+0x102/0x340 [ 31.801175] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.801782] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.802409] kasan_report+0xbe/0xf0 [ 31.802884] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.803506] vma_interval_tree_remove+0xc75/0xec0 [ 31.804105] vma_prepare+0xc54/0x11a0 [ 31.804579] __split_vma+0x5af/0x950 [ 31.805050] ? __pfx___split_vma+0x10/0x10 [ 31.805567] ? find_held_lock+0x2c/0x110 [ 31.806099] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.806665] ? lock_is_held_type+0x9f/0x120 [ 31.807201] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.807802] ? mtree_range_walk+0x632/0x900 [ 31.808350] ? mas_walk+0x5c7/0x7c0 [ 31.808822] do_vmi_munmap+0x1f1/0x2b0 [ 31.809310] mmap_region+0x1f9/0x2660 [ 31.809789] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.810306] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.811014] ? __pfx_lock_acquire+0x10/0x10 [ 31.811548] ? __pfx_mmap_region+0x10/0x10 [ 31.812072] ? security_mmap_addr+0x7d/0xa0 [ 31.812601] ? get_unmapped_area+0x1f5/0x3f0 [ 31.813145] do_mmap+0x854/0xf00 [ 31.813576] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.814089] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.814651] ksys_mmap_pgoff+0x3af/0x500 [ 31.815160] do_syscall_64+0x3f/0x90 [ 31.815630] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.816267] RIP: 0033:0x7f8f4524ad82 [ 31.816721] 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 [ 31.818822] RSP: 002b:00007ffcd1d2b7c8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.819726] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f8f4524ad82 [ 31.820570] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f8f44684000 [ 31.821419] RBP: 00007f8f44684000 R08: 0000000000000009 R09: 0000000000001000 [ 31.822265] R10: 0000000000000812 R11: 0000000000000206 R12: 0000558654c29b20 [ 31.823103] R13: 00007ffcd1d2b7e0 R14: 00007ffcd1d2b810 R15: 00007ffcd1d2bb70 [ 31.823952] [ 31.824240] [ 31.824454] Allocated by task 213: [ 31.824879] kasan_save_stack+0x22/0x50 [ 31.825376] kasan_set_track+0x25/0x30 [ 31.825864] __kasan_slab_alloc+0x59/0x70 [ 31.826400] kmem_cache_alloc+0x16b/0x370 [ 31.826914] vm_area_dup+0x20/0x160 [ 31.827362] __split_vma+0x170/0x950 [ 31.827828] split_vma+0xc6/0x110 [ 31.828262] mprotect_fixup+0x8d2/0xb30 [ 31.828758] do_mprotect_pkey+0x87e/0xd40 [ 31.829282] __x64_sys_mprotect+0x78/0xc0 [ 31.829799] do_syscall_64+0x3f/0x90 [ 31.830286] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.830923] [ 31.831138] Freed by task 13: [ 31.831518] kasan_save_stack+0x22/0x50 [ 31.832017] kasan_set_track+0x25/0x30 [ 31.832504] kasan_save_free_info+0x2b/0x50 [ 31.833034] __kasan_slab_free+0x10a/0x190 [ 31.833560] kmem_cache_free+0x10d/0x4d0 [ 31.834074] rcu_core+0x8c8/0x2860 [ 31.834511] __do_softirq+0x1b7/0x7d4 [ 31.834981] [ 31.835194] Last potentially related work creation: [ 31.835774] kasan_save_stack+0x22/0x50 [ 31.836271] __kasan_record_aux_stack+0x8e/0xa0 [ 31.836836] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.837472] remove_vma+0x139/0x170 [ 31.837940] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.838488] do_vmi_munmap+0x1f1/0x2b0 [ 31.838969] __vm_munmap+0x138/0x3a0 [ 31.839525] __x64_sys_munmap+0x59/0x80 [ 31.840039] do_syscall_64+0x3f/0x90 [ 31.840523] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.841178] [ 31.841397] The buggy address belongs to the object at ffff88800e283488 [ 31.841397] which belongs to the cache vm_area_struct of size 168 [ 31.842930] The buggy address is located 88 bytes inside of [ 31.842930] freed 168-byte region [ffff88800e283488, ffff88800e283530) [ 31.844380] [ 31.844600] The buggy address belongs to the physical page: [ 31.845282] page:00000000c3d48e89 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe283 [ 31.846398] memcg:ffff88800e172401 [ 31.846838] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 31.847556] page_type: 0xffffffff() [ 31.848035] raw: 0100000000000200 ffff88800879fc80 ffffea000031c880 dead00000000000f [ 31.848947] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e172401 [ 31.849850] page dumped because: kasan: bad access detected [ 31.850524] [ 31.850737] Memory state around the buggy address: [ 31.851315] ffff88800e283380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 31.852163] ffff88800e283400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 31.853007] >ffff88800e283480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.853846] ^ [ 31.854599] ffff88800e283500: fb fb fb fb fb fb fc fc fc fc fc fc fc fc 00 00 [ 31.855452] ffff88800e283580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 31.856312] ================================================================== [ 31.857235] Disabling lock debugging due to kernel taint [ 33.850006] BUG: Bad rss-counter state mm:00000000ddef2e13 type:MM_FILEPAGES val:33 [ 33.851198] BUG: Bad rss-counter state mm:00000000ddef2e13 type:MM_ANONPAGES val:22 [ 34.325813] BUG: Bad rss-counter state mm:000000008b3684b6 type:MM_FILEPAGES val:33 [ 34.327044] BUG: Bad rss-counter state mm:000000008b3684b6 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:13282' (ECDSA) to the list of known hosts. 2023/06/19 13:59:04 fuzzer started 2023/06/19 13:59:04 dialing manager at localhost:44161 2023/06/19 13:59:04 checking machine... 2023/06/19 13:59:04 checking revisions... [ 35.051748] kmemleak: Automatic memory scanning thread ended 2023/06/19 13:59:05 testing simple program... [ 35.093884] cgroup: Unknown subsys name 'net' [ 35.132240] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 13:59:03 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=ffffffff846000aa RCX=0000000000000001 RDX=1ffff1100d9c135e RSI=ffff888018feff48 RDI=ffffffff846000aa RBP=ffffffff846000aa RSP=ffff88806ce09a48 R8 =0000000000000001 R9 =ffff88806ce09ad8 R10=0000000000038001 R11=00000000000b4fb9 R12=0000000000000001 R13=0000000000000000 R14=ffff88800f17b680 R15=ffff88800dc92080 RIP=ffffffff811fc772 RFL=00000287 [--S--PC] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f45ba5ea900 00000000 00000000 GS =0000 ffff88806ce00000 00000000 00000000 LDT=0000 fffffe0000000000 00000000 00000000 TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000001000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007f45baba20b0 CR3=000000000e018000 CR4=00350ef0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=00000000000000000000000000000000 XMM01=000000000000000000000000000000ff XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=ffbc64ffffbc44ffffbc34ffffbc9f00 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=ffff88800d867a88 RCX=ffffffff860d6801 RDX=1ffff11001b0cf52 RSI=ffffffff8180c522 RDI=ffff88800d867a90 RBP=0000000000000000 RSP=ffff88800d8679a0 R8 =ffffffff860d68fa R9 =ffff88800d867a00 R10=0000000000038001 R11=0000000000010b7e R12=ffff88800d867a88 R13=0000000000000000 R14=ffff888006809b40 R15=ffff88800dd9ae00 RIP=ffffffff813ad485 RFL=00000287 [--S--PC] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f9ebcacd900 00000000 00000000 GS =0000 ffff88806cf00000 00000000 00000000 LDT=0000 fffffe0000000000 00000000 00000000 TR =0040 fffffe000004a000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000048000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007f9ebbf5bbb0 CR3=000000000c53c000 CR4=00350ee0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=ffffffffffffffffffffffffffffffff XMM01=30306234386136303638616663356134 XMM02=38303062343861363036386166633561 XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=a7cdc0ac185ae77c00000000000ae988 XMM05=c2d7fb8d726df34800000000001350e8 XMM06=34c6cfc244c8b0af0000000000133e88 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000