syzkaller login: [ 30.599850] BUG: Bad rss-counter state mm:0000000004f2af0e type:MM_FILEPAGES val:33 [ 30.600813] BUG: Bad rss-counter state mm:0000000004f2af0e type:MM_ANONPAGES val:22 [ 30.809585] ================================================================== [ 30.810664] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.811703] Read of size 8 at addr ffff88800c6e66b0 by task sshd/219 [ 30.812572] [ 30.812780] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.813591] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.814556] Call Trace: [ 30.814864] [ 30.815138] dump_stack_lvl+0x91/0xf0 [ 30.815605] print_report+0xcc/0x620 [ 30.816107] ? __virt_addr_valid+0x102/0x340 [ 30.816637] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.817222] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.817804] kasan_report+0xbe/0xf0 [ 30.818256] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.818863] vma_interval_tree_remove+0xc75/0xec0 [ 30.819432] vma_prepare+0xc54/0x11a0 [ 30.819885] __split_vma+0x5af/0x950 [ 30.820377] ? __pfx___split_vma+0x10/0x10 [ 30.820899] ? find_held_lock+0x2c/0x110 [ 30.821410] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.821963] ? lock_is_held_type+0x9f/0x120 [ 30.822516] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.823116] ? mtree_range_walk+0x632/0x900 [ 30.823659] ? mas_walk+0x5c7/0x7c0 [ 30.824174] do_vmi_munmap+0x1f1/0x2b0 [ 30.824664] mmap_region+0x1f9/0x2660 [ 30.825129] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.825629] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.826331] ? __pfx_lock_acquire+0x10/0x10 [ 30.826856] ? __pfx_mmap_region+0x10/0x10 [ 30.827380] ? security_mmap_addr+0x7d/0xa0 [ 30.827908] ? get_unmapped_area+0x1f5/0x3f0 [ 30.828480] do_mmap+0x854/0xf00 [ 30.828911] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.829392] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.829932] ksys_mmap_pgoff+0x3af/0x500 [ 30.830422] do_syscall_64+0x3f/0x90 [ 30.830909] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.831539] RIP: 0033:0x7f301f786d82 [ 30.832033] 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 [ 30.834111] RSP: 002b:00007ffda26d3838 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.835014] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f301f786d82 [ 30.835839] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f301ebc0000 [ 30.836709] RBP: 00007f301ebc0000 R08: 0000000000000009 R09: 0000000000001000 [ 30.837536] R10: 0000000000000812 R11: 0000000000000206 R12: 000055c450f73d90 [ 30.838381] R13: 00007ffda26d3850 R14: 00007ffda26d3880 R15: 00007ffda26d3be0 [ 30.839244] [ 30.839529] [ 30.839748] Allocated by task 212: [ 30.840200] kasan_save_stack+0x22/0x50 [ 30.840703] kasan_set_track+0x25/0x30 [ 30.841187] __kasan_slab_alloc+0x59/0x70 [ 30.841698] kmem_cache_alloc+0x16b/0x370 [ 30.842191] vm_area_dup+0x20/0x160 [ 30.842658] __split_vma+0x170/0x950 [ 30.843110] split_vma+0xc6/0x110 [ 30.843546] mprotect_fixup+0x8d2/0xb30 [ 30.844082] do_mprotect_pkey+0x87e/0xd40 [ 30.844586] __x64_sys_mprotect+0x78/0xc0 [ 30.845096] do_syscall_64+0x3f/0x90 [ 30.845562] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.846193] [ 30.846405] Freed by task 212: [ 30.846796] kasan_save_stack+0x22/0x50 [ 30.847274] kasan_set_track+0x25/0x30 [ 30.847742] kasan_save_free_info+0x2b/0x50 [ 30.848274] __kasan_slab_free+0x10a/0x190 [ 30.848780] kmem_cache_free+0x10d/0x4d0 [ 30.849261] rcu_core+0x8c8/0x2860 [ 30.849681] __do_softirq+0x1b7/0x7d4 [ 30.850131] [ 30.850339] Last potentially related work creation: [ 30.850901] kasan_save_stack+0x22/0x50 [ 30.851373] __kasan_record_aux_stack+0x8e/0xa0 [ 30.851925] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.852562] remove_vma+0x139/0x170 [ 30.852988] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.853514] do_vmi_munmap+0x1f1/0x2b0 [ 30.853979] __vm_munmap+0x138/0x3a0 [ 30.854420] __x64_sys_munmap+0x59/0x80 [ 30.854909] do_syscall_64+0x3f/0x90 [ 30.855357] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.855992] [ 30.856209] Second to last potentially related work creation: [ 30.856857] kasan_save_stack+0x22/0x50 [ 30.857334] __kasan_record_aux_stack+0x8e/0xa0 [ 30.857874] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.858479] remove_vma+0x139/0x170 [ 30.858917] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.859447] do_vmi_munmap+0x1f1/0x2b0 [ 30.859912] __vm_munmap+0x138/0x3a0 [ 30.860391] elf_map+0x26f/0x310 [ 30.860813] load_elf_binary+0x3417/0x5030 [ 30.861321] bprm_execve+0x803/0x1940 [ 30.861765] do_execveat_common+0x734/0x8e0 [ 30.862264] __x64_sys_execve+0x93/0xc0 [ 30.862749] do_syscall_64+0x3f/0x90 [ 30.863198] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.863807] [ 30.864049] The buggy address belongs to the object at ffff88800c6e6658 [ 30.864049] which belongs to the cache vm_area_struct of size 168 [ 30.865430] The buggy address is located 88 bytes inside of [ 30.865430] freed 168-byte region [ffff88800c6e6658, ffff88800c6e6700) [ 30.866751] [ 30.866955] The buggy address belongs to the physical page: [ 30.867573] page:0000000093fef867 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xc6e6 [ 30.868623] memcg:ffff88800d4cf501 [ 30.869026] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.869632] page_type: 0xffffffff() [ 30.870059] raw: 0100000000000200 ffff8880087a0c80 dead000000000100 dead000000000122 [ 30.870959] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d4cf501 [ 30.871816] page dumped because: kasan: bad access detected [ 30.872470] [ 30.872674] Memory state around the buggy address: [ 30.873244] ffff88800c6e6580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.874042] ffff88800c6e6600: fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb [ 30.874847] >ffff88800c6e6680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.875644] ^ [ 30.876198] ffff88800c6e6700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 30.877035] ffff88800c6e6780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 30.877832] ================================================================== [ 30.878775] Disabling lock debugging due to kernel taint [ 32.842017] BUG: Bad rss-counter state mm:000000003e6c0dc2 type:MM_FILEPAGES val:33 [ 32.842795] BUG: Bad rss-counter state mm:000000003e6c0dc2 type:MM_ANONPAGES val:22 [ 33.273658] BUG: Bad rss-counter state mm:00000000e3412f99 type:MM_FILEPAGES val:33 [ 33.274508] BUG: Bad rss-counter state mm:00000000e3412f99 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:5410' (ECDSA) to the list of known hosts. 2023/06/20 23:04:41 fuzzer started 2023/06/20 23:04:41 dialing manager at localhost:36067 2023/06/20 23:04:41 checking machine... 2023/06/20 23:04:41 checking revisions... [ 34.033282] kmemleak: Automatic memory scanning thread ended 2023/06/20 23:04:42 testing simple program... [ 34.089738] cgroup: Unknown subsys name 'net' [ 34.153899] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 23:04:41 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8451250e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=ffff888008c04000 R12=ffffffff85d3d350 R13=1ffffffff0a80fc7 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 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=00007fc160ef6320 CR3=00000000167de000 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=34303a3332203032206e754a3e36383c XMM01=7365733a646873732878696e755f6d61 XMM02=736f6c63206e6f6973736573203a296e XMM03=5f6d6170203a5d3832325b6468737320 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320363637 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=ffff88806cf39730 RBX=ffff8880164dd240 RCX=0000000000000000 RDX=0000000000000001 RSI=ffff8880164dd240 RDI=ffff88806cf395c0 RBP=dffffc0000000000 RSP=ffff88806cf09d08 R8 =0000000000000001 R9 =0000000000000000 R10=0000000000000000 R11=ffff88806cf09ff8 R12=ffff88806cf39500 R13=0000000000000000 R14=ffff8880164dd1c0 R15=ffff8880164dd240 RIP=ffffffff81255b82 RFL=00000096 [--S-AP-] 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 00007f187f6dd900 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=00007ffc18e0f000 CR3=000000000e2ce000 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=6720646572637465733a4d41503d706f XMM01=652022746f6f72223d74636361207469 XMM02=3d6c616e696d72657420322e322e302e XMM03=3d656d616e74736f682022646873732f XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000