syzkaller login: [ 30.787325] BUG: Bad rss-counter state mm:00000000eb0402a3 type:MM_FILEPAGES val:33 [ 30.788521] BUG: Bad rss-counter state mm:00000000eb0402a3 type:MM_ANONPAGES val:22 [ 30.825313] ================================================================== [ 30.826335] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.827310] Read of size 8 at addr ffff88800eda45c8 by task sshd/220 [ 30.828194] [ 30.828415] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 30.829308] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.830307] Call Trace: [ 30.830628] [ 30.830913] dump_stack_lvl+0x91/0xf0 [ 30.831405] print_report+0xcc/0x620 [ 30.831893] ? __virt_addr_valid+0x102/0x340 [ 30.832452] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.833086] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.833714] kasan_report+0xbe/0xf0 [ 30.834188] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.834824] vma_interval_tree_remove+0xc75/0xec0 [ 30.835429] vma_prepare+0xc54/0x11a0 [ 30.835913] __split_vma+0x5af/0x950 [ 30.836387] ? __pfx___split_vma+0x10/0x10 [ 30.836945] ? find_held_lock+0x2c/0x110 [ 30.837475] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.838048] ? lock_is_held_type+0x9f/0x120 [ 30.838588] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.839198] ? mtree_range_walk+0x632/0x900 [ 30.839755] ? mas_walk+0x5c7/0x7c0 [ 30.840235] do_vmi_munmap+0x1f1/0x2b0 [ 30.840755] mmap_region+0x1f9/0x2660 [ 30.841246] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.841769] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.842494] ? __pfx_lock_acquire+0x10/0x10 [ 30.843031] ? __pfx_mmap_region+0x10/0x10 [ 30.843565] ? security_mmap_addr+0x7d/0xa0 [ 30.844110] ? get_unmapped_area+0x1f5/0x3f0 [ 30.844689] do_mmap+0x854/0xf00 [ 30.845136] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.845644] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.846214] ksys_mmap_pgoff+0x3af/0x500 [ 30.846723] do_syscall_64+0x3f/0x90 [ 30.847206] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.847865] RIP: 0033:0x7f54edc56d82 [ 30.848327] 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 [ 30.850471] RSP: 002b:00007fff98ac1d88 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.851385] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f54edc56d82 [ 30.852236] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f54ed090000 [ 30.853111] RBP: 00007f54ed090000 R08: 0000000000000009 R09: 0000000000001000 [ 30.853955] R10: 0000000000000812 R11: 0000000000000206 R12: 0000560b3ffa1ec0 [ 30.854805] R13: 00007fff98ac1da0 R14: 00007fff98ac1dd0 R15: 00007fff98ac2130 [ 30.855656] [ 30.855959] [ 30.856175] Allocated by task 213: [ 30.856609] kasan_save_stack+0x22/0x50 [ 30.857147] kasan_set_track+0x25/0x30 [ 30.857644] __kasan_slab_alloc+0x59/0x70 [ 30.858174] kmem_cache_alloc+0x16b/0x370 [ 30.858695] vm_area_dup+0x20/0x160 [ 30.859156] __split_vma+0x170/0x950 [ 30.859630] split_vma+0xc6/0x110 [ 30.860080] mprotect_fixup+0x8d2/0xb30 [ 30.860584] do_mprotect_pkey+0x87e/0xd40 [ 30.861112] __x64_sys_mprotect+0x78/0xc0 [ 30.861636] do_syscall_64+0x3f/0x90 [ 30.862115] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.862762] [ 30.862979] Freed by task 19: [ 30.863364] kasan_save_stack+0x22/0x50 [ 30.863874] kasan_set_track+0x25/0x30 [ 30.864380] kasan_save_free_info+0x2b/0x50 [ 30.864931] __kasan_slab_free+0x10a/0x190 [ 30.865471] kmem_cache_free+0x10d/0x4d0 [ 30.865992] rcu_core+0x8c8/0x2860 [ 30.866443] __do_softirq+0x1b7/0x7d4 [ 30.866930] [ 30.867148] Last potentially related work creation: [ 30.867740] kasan_save_stack+0x22/0x50 [ 30.868262] __kasan_record_aux_stack+0x8e/0xa0 [ 30.868856] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.869503] remove_vma+0x139/0x170 [ 30.869952] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.870523] do_vmi_munmap+0x1f1/0x2b0 [ 30.871011] __vm_munmap+0x138/0x3a0 [ 30.871490] __x64_sys_munmap+0x59/0x80 [ 30.872005] do_syscall_64+0x3f/0x90 [ 30.872482] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.873165] [ 30.873384] The buggy address belongs to the object at ffff88800eda4570 [ 30.873384] which belongs to the cache vm_area_struct of size 168 [ 30.874879] The buggy address is located 88 bytes inside of [ 30.874879] freed 168-byte region [ffff88800eda4570, ffff88800eda4618) [ 30.876307] [ 30.876525] The buggy address belongs to the physical page: [ 30.877216] page:00000000356b5057 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xeda4 [ 30.878300] memcg:ffff88800dfd0401 [ 30.878730] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.879371] page_type: 0xffffffff() [ 30.879826] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 30.880757] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800dfd0401 [ 30.881679] page dumped because: kasan: bad access detected [ 30.882361] [ 30.882577] Memory state around the buggy address: [ 30.883169] ffff88800eda4480: fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.884050] ffff88800eda4500: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb [ 30.884942] >ffff88800eda4580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.885818] ^ [ 30.886486] ffff88800eda4600: fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb [ 30.887355] ffff88800eda4680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.888222] ================================================================== [ 30.889274] Disabling lock debugging due to kernel taint [ 32.720855] BUG: Bad rss-counter state mm:00000000094feb74 type:MM_FILEPAGES val:33 [ 32.721634] BUG: Bad rss-counter state mm:00000000094feb74 type:MM_ANONPAGES val:22 [ 33.124027] BUG: Bad rss-counter state mm:00000000b2dabfb3 type:MM_FILEPAGES val:33 [ 33.124796] BUG: Bad rss-counter state mm:00000000b2dabfb3 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:4933' (ECDSA) to the list of known hosts. 2023/06/20 01:18:49 fuzzer started 2023/06/20 01:18:49 dialing manager at localhost:44161 2023/06/20 01:18:49 checking machine... 2023/06/20 01:18:49 checking revisions... [ 33.773407] kmemleak: Automatic memory scanning thread ended 2023/06/20 01:18:49 testing simple program... [ 33.833714] cgroup: Unknown subsys name 'net' [ 33.895576] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 01:18:49 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8450c50e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=ffff888008c58000 R12=ffffffff85d3bed0 R13=1ffffffff0a80fc7 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8450d49f 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=00007fd7302f9540 CR3=000000000ea84000 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=2038343a38313a3130203032206e754a XMM01=73732878696e755f6d6170203a5d3932 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3932325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732038343a38313a3130203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffffea000057eec0 RBX=ffff888015fbb490 RCX=ffffea0000000000 RDX=ffffea000057ee81 RSI=ffffffff813782a8 RDI=ffff8880087b6500 RBP=ffff88806cf09e58 RSP=ffff88806cf09e30 R8 =0000000000000000 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=00000000000b6996 R12=ffff8880087b6500 R13=ffffea000057ee80 R14=ffffffff813782a8 R15=ffff888015fbb5b8 RIP=ffffffff81809ba5 RFL=00000202 [-------] 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 00007f6f9932b900 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=00007f6f9930a020 CR3=000000001aa64000 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=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