syzkaller login: [ 30.654556] BUG: Bad rss-counter state mm:00000000a01cd73c type:MM_FILEPAGES val:33 [ 30.656761] BUG: Bad rss-counter state mm:00000000a01cd73c type:MM_ANONPAGES val:22 [ 30.815301] ================================================================== [ 30.816219] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.817138] Read of size 8 at addr ffff888016a6d5c8 by task sshd/220 [ 30.817890] [ 30.818103] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.819098] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.820069] Call Trace: [ 30.820399] [ 30.820677] dump_stack_lvl+0x91/0xf0 [ 30.821169] print_report+0xcc/0x620 [ 30.821646] ? __virt_addr_valid+0x102/0x340 [ 30.822179] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.822788] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.823384] kasan_report+0xbe/0xf0 [ 30.823856] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.824470] vma_interval_tree_remove+0xc75/0xec0 [ 30.825060] vma_prepare+0xc54/0x11a0 [ 30.825529] __split_vma+0x5af/0x950 [ 30.825994] ? __pfx___split_vma+0x10/0x10 [ 30.826518] ? find_held_lock+0x2c/0x110 [ 30.827030] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.827586] ? lock_is_held_type+0x9f/0x120 [ 30.828122] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.828743] ? mtree_range_walk+0x632/0x900 [ 30.829285] ? mas_walk+0x5c7/0x7c0 [ 30.829757] do_vmi_munmap+0x1f1/0x2b0 [ 30.830241] mmap_region+0x1f9/0x2660 [ 30.830718] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.831222] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.831925] ? __pfx_lock_acquire+0x10/0x10 [ 30.832465] ? __pfx_mmap_region+0x10/0x10 [ 30.832986] ? security_mmap_addr+0x7d/0xa0 [ 30.833509] ? get_unmapped_area+0x1f5/0x3f0 [ 30.834049] do_mmap+0x854/0xf00 [ 30.834485] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.834977] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.835533] ksys_mmap_pgoff+0x3af/0x500 [ 30.836034] do_syscall_64+0x3f/0x90 [ 30.836512] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.837153] RIP: 0033:0x7fd44e750d82 [ 30.837608] 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 [ 30.839702] RSP: 002b:00007fff24ad15c8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.840610] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fd44e750d82 [ 30.841446] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fd44db8a000 [ 30.842285] RBP: 00007fd44db8a000 R08: 0000000000000009 R09: 0000000000001000 [ 30.843128] R10: 0000000000000812 R11: 0000000000000206 R12: 000056537ce76d90 [ 30.843961] R13: 00007fff24ad15e0 R14: 00007fff24ad1610 R15: 00007fff24ad1970 [ 30.844815] [ 30.845104] [ 30.845322] Allocated by task 213: [ 30.845742] kasan_save_stack+0x22/0x50 [ 30.846245] kasan_set_track+0x25/0x30 [ 30.846739] __kasan_slab_alloc+0x59/0x70 [ 30.847260] kmem_cache_alloc+0x16b/0x370 [ 30.847769] vm_area_dup+0x20/0x160 [ 30.848386] __split_vma+0x170/0x950 [ 30.848857] split_vma+0xc6/0x110 [ 30.849296] mprotect_fixup+0x8d2/0xb30 [ 30.849799] do_mprotect_pkey+0x87e/0xd40 [ 30.850325] __x64_sys_mprotect+0x78/0xc0 [ 30.850848] do_syscall_64+0x3f/0x90 [ 30.851325] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.851979] [ 30.852204] Freed by task 213: [ 30.852601] kasan_save_stack+0x22/0x50 [ 30.853106] kasan_set_track+0x25/0x30 [ 30.853607] kasan_save_free_info+0x2b/0x50 [ 30.854148] __kasan_slab_free+0x10a/0x190 [ 30.854681] kmem_cache_free+0x10d/0x4d0 [ 30.855191] rcu_core+0x8c8/0x2860 [ 30.855638] __do_softirq+0x1b7/0x7d4 [ 30.856121] [ 30.856347] Last potentially related work creation: [ 30.856934] kasan_save_stack+0x22/0x50 [ 30.857443] __kasan_record_aux_stack+0x8e/0xa0 [ 30.858022] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.858664] remove_vma+0x139/0x170 [ 30.859129] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.859699] do_vmi_munmap+0x1f1/0x2b0 [ 30.860351] __vm_munmap+0x138/0x3a0 [ 30.860819] __x64_sys_munmap+0x59/0x80 [ 30.861319] do_syscall_64+0x3f/0x90 [ 30.861794] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.862443] [ 30.862660] The buggy address belongs to the object at ffff888016a6d570 [ 30.862660] which belongs to the cache vm_area_struct of size 168 [ 30.864148] The buggy address is located 88 bytes inside of [ 30.864148] freed 168-byte region [ffff888016a6d570, ffff888016a6d618) [ 30.865561] [ 30.865780] The buggy address belongs to the physical page: [ 30.866440] page:00000000570204e2 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x16a6d [ 30.867530] memcg:ffff88800ec03c01 [ 30.867959] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.868620] page_type: 0xffffffff() [ 30.869076] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.870007] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800ec03c01 [ 30.870910] page dumped because: kasan: bad access detected [ 30.871573] [ 30.871786] Memory state around the buggy address: [ 30.872379] ffff888016a6d480: fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.873237] ffff888016a6d500: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb [ 30.874087] >ffff888016a6d580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.874935] ^ [ 30.875618] ffff888016a6d600: fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb [ 30.876500] ffff888016a6d680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.877343] ================================================================== [ 30.878270] Disabling lock debugging due to kernel taint [ 33.594510] BUG: Bad rss-counter state mm:000000004925b584 type:MM_FILEPAGES val:33 [ 33.596222] BUG: Bad rss-counter state mm:000000004925b584 type:MM_ANONPAGES val:22 [ 34.132417] BUG: Bad rss-counter state mm:00000000ac5b9df2 type:MM_FILEPAGES val:33 [ 34.133590] BUG: Bad rss-counter state mm:00000000ac5b9df2 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:53881' (ECDSA) to the list of known hosts. 2023/06/21 03:46:06 fuzzer started 2023/06/21 03:46:06 dialing manager at localhost:36067 2023/06/21 03:46:06 checking machine... 2023/06/21 03:46:06 checking revisions... [ 34.770881] kmemleak: Automatic memory scanning thread ended 2023/06/21 03:46:06 testing simple program... [ 34.821185] cgroup: Unknown subsys name 'net' [ 34.913478] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 03:46:06 Registers: info registers vcpu 0 RAX=1ffffffff0c271ea RBX=0000000000000001 RCX=ffffffff86138f52 RDX=0000000000000000 RSI=dffffc0000000000 RDI=ffffffff86138f54 RBP=ffff888017c4f600 RSP=ffff888017c4f538 R8 =ffffffff86138f56 R9 =ffff888017c4f5e8 R10=0000000000038001 R11=0000000000020db7 R12=ffff888017c4f608 R13=ffff888017c4f5f0 R14=ffff888017c4f940 R15=ffff888017c4f5a8 RIP=ffffffff811311c7 RFL=00000213 [----A-C] 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 00007f5e7c96f700 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=00007fc70cb65a30 CR3=0000000010012000 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=756e696c65735f687373203a726f7272 XMM02=2079746972756365732078756e694c45 XMM03=2064656c696146203a656d616e796278 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320363532 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=dffffc0000000000 RCX=ffffffff8198b230 RDX=ffff88801a05d1c0 RSI=0000000000000000 RDI=0000000000000005 RBP=ffff888015fb0bc0 RSP=ffff88800f69f920 R8 =0000000000000005 R9 =0000000000000001 R10=0000000000000001 R11=0000000000000001 R12=0000000000000001 R13=0000000000010000 R14=ffff88800948b300 R15=ffff88800f626000 RIP=ffffffff814c0864 RFL=00000246 [---Z-P-] 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 00007fd713cab900 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=00007fd714260650 CR3=000000000f706000 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=ffffffff00ffffffffffffffffffffff XMM01=707465675f6c697475646f6d6d61705f XMM02=ff000000000000ff0000000000ff0000 XMM03=66207463656e6e6f6373696420646576 XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000 XMM06=0d0c0f0e09080b0a0504070601000302 XMM07=00000000000000000000000000000000 XMM08=000a0d732a2e25006c61746166003367 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000