syzkaller login: [ 38.708986] BUG: Bad rss-counter state mm:00000000fbe5fcc8 type:MM_FILEPAGES val:33 [ 38.710243] BUG: Bad rss-counter state mm:00000000fbe5fcc8 type:MM_ANONPAGES val:22 [ 38.850382] ================================================================== [ 38.851508] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 38.852660] Read of size 8 at addr ffff88800bbbfed8 by task sshd/219 [ 38.853709] [ 38.853975] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 38.855038] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 38.856234] Call Trace: [ 38.856625] [ 38.856959] dump_stack_lvl+0x91/0xf0 [ 38.857563] print_report+0xcc/0x620 [ 38.858076] ? __virt_addr_valid+0x102/0x340 [ 38.858631] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.859248] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.859856] kasan_report+0xbe/0xf0 [ 38.860326] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.860948] vma_interval_tree_remove+0xc75/0xec0 [ 38.861573] vma_prepare+0xc54/0x11a0 [ 38.862052] __split_vma+0x5af/0x950 [ 38.862524] ? __pfx___split_vma+0x10/0x10 [ 38.863052] ? find_held_lock+0x2c/0x110 [ 38.863570] do_vmi_align_munmap+0x2ba/0x11f0 [ 38.864128] ? lock_is_held_type+0x9f/0x120 [ 38.864667] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 38.865276] ? mtree_range_walk+0x632/0x900 [ 38.865830] ? mas_walk+0x5c7/0x7c0 [ 38.866305] do_vmi_munmap+0x1f1/0x2b0 [ 38.866795] mmap_region+0x1f9/0x2660 [ 38.867274] ? vm_mmap_pgoff+0x15c/0x3a0 [ 38.867789] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 38.868491] ? __pfx_lock_acquire+0x10/0x10 [ 38.869024] ? __pfx_mmap_region+0x10/0x10 [ 38.869574] ? security_mmap_addr+0x7d/0xa0 [ 38.870104] ? get_unmapped_area+0x1f5/0x3f0 [ 38.870655] do_mmap+0x854/0xf00 [ 38.871087] vm_mmap_pgoff+0x1a6/0x3a0 [ 38.871578] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 38.872138] ksys_mmap_pgoff+0x3af/0x500 [ 38.872647] do_syscall_64+0x3f/0x90 [ 38.873118] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.873770] RIP: 0033:0x7f1a35e06d82 [ 38.874226] 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 [ 38.876327] RSP: 002b:00007ffc7a058ae8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 38.877228] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f1a35e06d82 [ 38.878088] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f1a35240000 [ 38.878935] RBP: 00007f1a35240000 R08: 0000000000000009 R09: 0000000000001000 [ 38.879771] R10: 0000000000000812 R11: 0000000000000206 R12: 0000559b5c485b20 [ 38.880610] R13: 00007ffc7a058b00 R14: 00007ffc7a058b30 R15: 00007ffc7a058e90 [ 38.881476] [ 38.881769] [ 38.881986] Allocated by task 212: [ 38.882411] kasan_save_stack+0x22/0x50 [ 38.882920] kasan_set_track+0x25/0x30 [ 38.883415] __kasan_slab_alloc+0x59/0x70 [ 38.883938] kmem_cache_alloc+0x16b/0x370 [ 38.884453] vm_area_dup+0x20/0x160 [ 38.884904] __split_vma+0x170/0x950 [ 38.885387] split_vma+0xc6/0x110 [ 38.885825] mprotect_fixup+0x8d2/0xb30 [ 38.886323] do_mprotect_pkey+0x87e/0xd40 [ 38.886873] __x64_sys_mprotect+0x78/0xc0 [ 38.887405] do_syscall_64+0x3f/0x90 [ 38.887895] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.888562] [ 38.888792] Freed by task 212: [ 38.889216] kasan_save_stack+0x22/0x50 [ 38.889749] kasan_set_track+0x25/0x30 [ 38.890244] kasan_save_free_info+0x2b/0x50 [ 38.890773] __kasan_slab_free+0x10a/0x190 [ 38.891304] kmem_cache_free+0x10d/0x4d0 [ 38.891813] rcu_core+0x8c8/0x2860 [ 38.892258] __do_softirq+0x1b7/0x7d4 [ 38.892754] [ 38.892972] Last potentially related work creation: [ 38.893583] kasan_save_stack+0x22/0x50 [ 38.894149] __kasan_record_aux_stack+0x8e/0xa0 [ 38.894721] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.895358] remove_vma+0x139/0x170 [ 38.895812] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.896369] do_vmi_munmap+0x1f1/0x2b0 [ 38.896859] __vm_munmap+0x138/0x3a0 [ 38.897341] __x64_sys_munmap+0x59/0x80 [ 38.897841] do_syscall_64+0x3f/0x90 [ 38.898319] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.898959] [ 38.899175] Second to last potentially related work creation: [ 38.899862] kasan_save_stack+0x22/0x50 [ 38.900361] __kasan_record_aux_stack+0x8e/0xa0 [ 38.900935] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.901579] remove_vma+0x139/0x170 [ 38.902028] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.902576] do_vmi_munmap+0x1f1/0x2b0 [ 38.903078] __vm_munmap+0x138/0x3a0 [ 38.903555] __x64_sys_munmap+0x59/0x80 [ 38.904052] do_syscall_64+0x3f/0x90 [ 38.904528] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.905202] [ 38.905419] The buggy address belongs to the object at ffff88800bbbfe80 [ 38.905419] which belongs to the cache vm_area_struct of size 168 [ 38.906916] The buggy address is located 88 bytes inside of [ 38.906916] freed 168-byte region [ffff88800bbbfe80, ffff88800bbbff28) [ 38.908348] [ 38.908567] The buggy address belongs to the physical page: [ 38.909281] page:00000000276a958f refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xbbbf [ 38.910378] memcg:ffff88800de5db01 [ 38.910811] flags: 0x100000000000200(slab|node=0|zone=1) [ 38.911477] page_type: 0xffffffff() [ 38.911941] raw: 0100000000000200 ffff8880087a0c80 dead000000000100 dead000000000122 [ 38.912874] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800de5db01 [ 38.913813] page dumped because: kasan: bad access detected [ 38.914505] [ 38.914731] Memory state around the buggy address: [ 38.915336] ffff88800bbbfd80: fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 38.916227] ffff88800bbbfe00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 38.917106] >ffff88800bbbfe80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.918004] ^ [ 38.918757] ffff88800bbbff00: fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc [ 38.919627] ffff88800bbbff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 38.920503] ================================================================== [ 38.921460] Disabling lock debugging due to kernel taint [ 41.239010] BUG: Bad rss-counter state mm:000000005b57c4db type:MM_FILEPAGES val:33 [ 41.240007] BUG: Bad rss-counter state mm:000000005b57c4db type:MM_ANONPAGES val:22 [ 41.718960] BUG: Bad rss-counter state mm:000000005bf6528a type:MM_FILEPAGES val:33 [ 41.719982] BUG: Bad rss-counter state mm:000000005bf6528a type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:12984' (ECDSA) to the list of known hosts. 2023/06/21 07:10:36 fuzzer started 2023/06/21 07:10:36 dialing manager at localhost:36067 2023/06/21 07:10:36 checking machine... 2023/06/21 07:10:36 checking revisions... [ 42.433563] kmemleak: Automatic memory scanning thread ended 2023/06/21 07:10:36 testing simple program... [ 42.488221] cgroup: Unknown subsys name 'net' [ 42.592777] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 07:10:36 Registers: info registers vcpu 0 RAX=0000000080000000 RBX=0000000000008000 RCX=ffffffff81850c3c RDX=ffff888019c351c0 RSI=0000000000000000 RDI=0000000000000005 RBP=ffff88801ac402b0 RSP=ffff88800b967918 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000008000 R11=0000000000000001 R12=0000000000000000 R13=ffff88800e7b0050 R14=0000000000000000 R15=1ffff1100172cf33 RIP=ffffffff814c086b 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 00007f67149e1900 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=00007f6714f96650 CR3=000000001a32e000 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=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 info registers vcpu 1 RAX=0000001c4bdf05fc RBX=0000000000000000 RCX=00000000000006e0 RDX=000000000000001c RSI=ffff88806cf28140 RDI=0000000000053b7f RBP=ffff88806cf28140 RSP=ffff88806cf09ee0 R8 =0000000000000007 R9 =0000000000000000 R10=00000000000efa54 R11=ffff88806cf09ff8 R12=0000000000053b7f R13=0000000000000000 R14=0000000000000000 R15=ffff88806cf2b940 RIP=ffffffff81106295 RFL=00000012 [----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 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=00007f3d4a5842c0 CR3=000000000c7c4000 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=e160dc980b3b20aabd49271d712f3584 XMM02=ec2efd57dc4c00df000000000011c210 XMM03=ec1b81d3ff8fd1b7000000000011c2e0 XMM04=dc73b3baa9e6ccc500000000000ae988 XMM05=3712e8700fcda2d80000000000134268 XMM06=806171799158d9670000000000132f98 XMM07=e042d86d42eb936e0000000000122708 XMM08=ec1b81d3ff8fd1b7000000000011c2e0 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000