syzkaller login: [ 30.683484] BUG: Bad rss-counter state mm:000000003db9bff0 type:MM_FILEPAGES val:33 [ 30.684253] BUG: Bad rss-counter state mm:000000003db9bff0 type:MM_ANONPAGES val:22 [ 30.841623] ================================================================== [ 30.842554] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.843511] Read of size 8 at addr ffff888015c374e0 by task sshd/220 [ 30.844274] [ 30.844497] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.845509] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.846541] Call Trace: [ 30.846860] [ 30.847149] dump_stack_lvl+0x91/0xf0 [ 30.847648] print_report+0xcc/0x620 [ 30.848135] ? __virt_addr_valid+0x102/0x340 [ 30.848687] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.849297] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.849923] kasan_report+0xbe/0xf0 [ 30.850396] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.851027] vma_interval_tree_remove+0xc75/0xec0 [ 30.851634] vma_prepare+0xc54/0x11a0 [ 30.852125] __split_vma+0x5af/0x950 [ 30.852598] ? __pfx___split_vma+0x10/0x10 [ 30.853131] ? find_held_lock+0x2c/0x110 [ 30.853659] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.854224] ? lock_is_held_type+0x9f/0x120 [ 30.854765] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.855373] ? mtree_range_walk+0x632/0x900 [ 30.855927] ? mas_walk+0x5c7/0x7c0 [ 30.856406] do_vmi_munmap+0x1f1/0x2b0 [ 30.856901] mmap_region+0x1f9/0x2660 [ 30.857386] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.857919] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.858638] ? __pfx_lock_acquire+0x10/0x10 [ 30.859169] ? __pfx_mmap_region+0x10/0x10 [ 30.859698] ? security_mmap_addr+0x7d/0xa0 [ 30.860235] ? get_unmapped_area+0x1f5/0x3f0 [ 30.860780] do_mmap+0x854/0xf00 [ 30.861221] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.861723] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.862298] ksys_mmap_pgoff+0x3af/0x500 [ 30.862811] do_syscall_64+0x3f/0x90 [ 30.863286] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.863946] RIP: 0033:0x7f8b292acd82 [ 30.864403] 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 [ 30.866551] RSP: 002b:00007ffd1f0142c8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.867456] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f8b292acd82 [ 30.868305] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f8b286e6000 [ 30.869150] RBP: 00007f8b286e6000 R08: 0000000000000009 R09: 0000000000001000 [ 30.870011] R10: 0000000000000812 R11: 0000000000000206 R12: 000055d83224dec0 [ 30.870856] R13: 00007ffd1f0142e0 R14: 00007ffd1f014310 R15: 00007ffd1f014670 [ 30.871703] [ 30.871999] [ 30.872219] Allocated by task 213: [ 30.872642] kasan_save_stack+0x22/0x50 [ 30.873148] kasan_set_track+0x25/0x30 [ 30.873660] __kasan_slab_alloc+0x59/0x70 [ 30.874188] kmem_cache_alloc+0x16b/0x370 [ 30.874703] vm_area_dup+0x20/0x160 [ 30.875158] __split_vma+0x170/0x950 [ 30.875619] split_vma+0xc6/0x110 [ 30.876061] mprotect_fixup+0x8d2/0xb30 [ 30.876568] do_mprotect_pkey+0x87e/0xd40 [ 30.877095] __x64_sys_mprotect+0x78/0xc0 [ 30.877611] do_syscall_64+0x3f/0x90 [ 30.878103] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.878747] [ 30.878960] Freed by task 203: [ 30.879355] kasan_save_stack+0x22/0x50 [ 30.879861] kasan_set_track+0x25/0x30 [ 30.880356] kasan_save_free_info+0x2b/0x50 [ 30.880888] __kasan_slab_free+0x10a/0x190 [ 30.881425] kmem_cache_free+0x10d/0x4d0 [ 30.881956] rcu_core+0x8c8/0x2860 [ 30.882402] __do_softirq+0x1b7/0x7d4 [ 30.882881] [ 30.883099] Last potentially related work creation: [ 30.883688] kasan_save_stack+0x22/0x50 [ 30.884192] __kasan_record_aux_stack+0x8e/0xa0 [ 30.884768] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.885408] remove_vma+0x139/0x170 [ 30.885870] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.886423] do_vmi_munmap+0x1f1/0x2b0 [ 30.886908] __vm_munmap+0x138/0x3a0 [ 30.887435] __x64_sys_munmap+0x59/0x80 [ 30.887933] do_syscall_64+0x3f/0x90 [ 30.888412] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.889071] [ 30.889287] The buggy address belongs to the object at ffff888015c37488 [ 30.889287] which belongs to the cache vm_area_struct of size 168 [ 30.890775] The buggy address is located 88 bytes inside of [ 30.890775] freed 168-byte region [ffff888015c37488, ffff888015c37530) [ 30.892166] [ 30.892383] The buggy address belongs to the physical page: [ 30.893031] page:000000006a7e5a35 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x15c37 [ 30.894122] memcg:ffff888016cafa01 [ 30.894549] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.895195] page_type: 0xffffffff() [ 30.895647] raw: 0100000000000200 ffff8880087a0c80 ffffea000037ee40 0000000000000002 [ 30.896564] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888016cafa01 [ 30.897469] page dumped because: kasan: bad access detected [ 30.898149] [ 30.898362] Memory state around the buggy address: [ 30.898932] ffff888015c37380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 30.899776] ffff888015c37400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 30.900625] >ffff888015c37480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.901471] ^ [ 30.902241] ffff888015c37500: fb fb fb fb fb fb fc fc fc fc fc fc fc fc 00 00 [ 30.903097] ffff888015c37580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.903948] ================================================================== [ 30.905035] Disabling lock debugging due to kernel taint [ 33.203880] BUG: Bad rss-counter state mm:000000009baa45dc type:MM_FILEPAGES val:33 [ 33.205184] BUG: Bad rss-counter state mm:000000009baa45dc type:MM_ANONPAGES val:22 [ 33.681882] BUG: Bad rss-counter state mm:00000000e0bdbc10 type:MM_FILEPAGES val:33 [ 33.683180] BUG: Bad rss-counter state mm:00000000e0bdbc10 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:32761' (ECDSA) to the list of known hosts. 2023/06/21 00:34:09 fuzzer started 2023/06/21 00:34:09 dialing manager at localhost:36067 2023/06/21 00:34:09 checking machine... 2023/06/21 00:34:09 checking revisions... [ 34.400621] kmemleak: Automatic memory scanning thread ended 2023/06/21 00:34:10 testing simple program... [ 34.452308] cgroup: Unknown subsys name 'net' [ 34.498410] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 00:34:09 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=ffffffff813782f8 RCX=0000000000000001 RDX=1ffff110011b3f3a RSI=ffff888008d9fd38 RDI=ffffffff813782f8 RBP=ffffffff813782f8 RSP=ffff888008d9f930 R8 =0000000000000001 R9 =ffff888008d9f9b8 R10=0000000000038001 R11=0000000000020cbd R12=ffff888008d9fa40 R13=0000000000000000 R14=ffff888008d90000 R15=ffff888017887a00 RIP=ffffffff811fc6f0 RFL=00000292 [--S-A--] 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 0000000000000000 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=00007f2138fe00b0 CR3=0000000015fe6000 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=34333a3030203132206e754a3e36383c XMM01=7365733a646873732878696e755f6d61 XMM02=736f6c63206e6f6973736573203a296e XMM03=5f6d6170203a5d3033325b6468737320 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320343532 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=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8451250e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffff888008e07e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=ffff888008c04400 R12=ffffffff85d3d350 R13=1ffff110011c0fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8451349f RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=1 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 0000000000000000 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=00007fd445904940 CR3=0000000008c78000 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=00000000000000000000000000000000 XMM01=3f6ca599a2c4898cc9496728aaf6703b XMM02=ec2efd57dc4c00df000000000011be90 XMM03=9b277d99ee5fd2b2000000000011bf60 XMM04=1a0830819cbe781900000000000ae988 XMM05=e4cb8bb95a7664b60000000000132640 XMM06=c291bd5c70af25b900000000001324c8 XMM07=e042d86d42eb936e0000000000122a80 XMM08=9b277d99ee5fd2b2000000000011bf60 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000