syzkaller login: [ 34.613380] BUG: Bad rss-counter state mm:000000009ed3eedc type:MM_FILEPAGES val:33 [ 34.614634] BUG: Bad rss-counter state mm:000000009ed3eedc type:MM_ANONPAGES val:22 [ 34.784108] ================================================================== [ 34.785250] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 34.786383] Read of size 8 at addr ffff88800945a6b0 by task sshd/220 [ 34.787452] [ 34.787714] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 34.788769] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 34.789995] Call Trace: [ 34.790394] [ 34.790731] dump_stack_lvl+0x91/0xf0 [ 34.791318] print_report+0xcc/0x620 [ 34.791898] ? __virt_addr_valid+0x102/0x340 [ 34.792551] ? vma_interval_tree_remove+0xc75/0xec0 [ 34.793299] ? vma_interval_tree_remove+0xc75/0xec0 [ 34.794015] kasan_report+0xbe/0xf0 [ 34.794568] ? vma_interval_tree_remove+0xc75/0xec0 [ 34.795291] vma_interval_tree_remove+0xc75/0xec0 [ 34.796000] vma_prepare+0xc54/0x11a0 [ 34.796559] __split_vma+0x5af/0x950 [ 34.797164] ? __pfx___split_vma+0x10/0x10 [ 34.797806] ? find_held_lock+0x2c/0x110 [ 34.798448] do_vmi_align_munmap+0x2ba/0x11f0 [ 34.799147] ? lock_is_held_type+0x9f/0x120 [ 34.799805] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 34.800556] ? mtree_range_walk+0x632/0x900 [ 34.801259] ? mas_walk+0x5c7/0x7c0 [ 34.801843] do_vmi_munmap+0x1f1/0x2b0 [ 34.802453] mmap_region+0x1f9/0x2660 [ 34.803058] ? vm_mmap_pgoff+0x15c/0x3a0 [ 34.803677] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 34.804537] ? __pfx_lock_acquire+0x10/0x10 [ 34.805204] ? __pfx_mmap_region+0x10/0x10 [ 34.805849] ? security_mmap_addr+0x7d/0xa0 [ 34.806502] ? get_unmapped_area+0x1f5/0x3f0 [ 34.807177] do_mmap+0x854/0xf00 [ 34.807720] vm_mmap_pgoff+0x1a6/0x3a0 [ 34.808331] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 34.809024] ksys_mmap_pgoff+0x3af/0x500 [ 34.809681] do_syscall_64+0x3f/0x90 [ 34.810267] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 34.811067] RIP: 0033:0x7f24af864d82 [ 34.811625] 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 [ 34.814240] RSP: 002b:00007ffccd6c9648 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 34.815363] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f24af864d82 [ 34.816404] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f24aec9e000 [ 34.817474] RBP: 00007f24aec9e000 R08: 0000000000000009 R09: 0000000000001000 [ 34.818506] R10: 0000000000000812 R11: 0000000000000206 R12: 000055e020c6fec0 [ 34.819559] R13: 00007ffccd6c9660 R14: 00007ffccd6c9690 R15: 00007ffccd6c99f0 [ 34.820614] [ 34.820970] [ 34.821262] Allocated by task 213: [ 34.821790] kasan_save_stack+0x22/0x50 [ 34.822410] kasan_set_track+0x25/0x30 [ 34.823019] __kasan_slab_alloc+0x59/0x70 [ 34.823665] kmem_cache_alloc+0x16b/0x370 [ 34.824296] vm_area_dup+0x20/0x160 [ 34.824852] __split_vma+0x170/0x950 [ 34.825443] split_vma+0xc6/0x110 [ 34.825997] mprotect_fixup+0x8d2/0xb30 [ 34.826613] do_mprotect_pkey+0x87e/0xd40 [ 34.827253] __x64_sys_mprotect+0x78/0xc0 [ 34.827873] do_syscall_64+0x3f/0x90 [ 34.828508] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 34.829339] [ 34.829609] Freed by task 213: [ 34.830097] kasan_save_stack+0x22/0x50 [ 34.830711] kasan_set_track+0x25/0x30 [ 34.831320] kasan_save_free_info+0x2b/0x50 [ 34.831979] __kasan_slab_free+0x10a/0x190 [ 34.832649] kmem_cache_free+0x10d/0x4d0 [ 34.833297] rcu_core+0x8c8/0x2860 [ 34.833854] __do_softirq+0x1b7/0x7d4 [ 34.834439] [ 34.834710] Last potentially related work creation: [ 34.835430] kasan_save_stack+0x22/0x50 [ 34.836050] __kasan_record_aux_stack+0x8e/0xa0 [ 34.836771] __call_rcu_common.constprop.0+0x6a/0xb90 [ 34.837571] remove_vma+0x139/0x170 [ 34.838136] do_vmi_align_munmap+0xd4a/0x11f0 [ 34.838825] do_vmi_munmap+0x1f1/0x2b0 [ 34.839424] __vm_munmap+0x138/0x3a0 [ 34.840004] __x64_sys_munmap+0x59/0x80 [ 34.840613] do_syscall_64+0x3f/0x90 [ 34.841211] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 34.842010] [ 34.842281] The buggy address belongs to the object at ffff88800945a658 [ 34.842281] which belongs to the cache vm_area_struct of size 168 [ 34.844091] The buggy address is located 88 bytes inside of [ 34.844091] freed 168-byte region [ffff88800945a658, ffff88800945a700) [ 34.845826] [ 34.846095] The buggy address belongs to the physical page: [ 34.846913] page:0000000096ce4f96 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x945a [ 34.848255] memcg:ffff888016c90001 [ 34.848776] flags: 0x100000000000200(slab|node=0|zone=1) [ 34.849599] page_type: 0xffffffff() [ 34.850159] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 34.851309] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888016c90001 [ 34.852437] page dumped because: kasan: bad access detected [ 34.853269] [ 34.853538] Memory state around the buggy address: [ 34.854258] ffff88800945a580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 34.855308] ffff88800945a600: 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb [ 34.856365] >ffff88800945a680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.857572] ^ [ 34.858358] ffff88800945a700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 34.859517] ffff88800945a780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 34.860665] ================================================================== [ 34.862042] Disabling lock debugging due to kernel taint [ 36.870388] BUG: Bad rss-counter state mm:000000003ac046a5 type:MM_FILEPAGES val:33 [ 36.871358] BUG: Bad rss-counter state mm:000000003ac046a5 type:MM_ANONPAGES val:22 [ 37.377163] BUG: Bad rss-counter state mm:00000000fbf64886 type:MM_FILEPAGES val:33 [ 37.378365] BUG: Bad rss-counter state mm:00000000fbf64886 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:3264' (ECDSA) to the list of known hosts. 2023/06/20 03:10:18 fuzzer started 2023/06/20 03:10:19 dialing manager at localhost:44161 2023/06/20 03:10:19 checking machine... 2023/06/20 03:10:19 checking revisions... [ 37.987354] kmemleak: Automatic memory scanning thread ended 2023/06/20 03:10:19 testing simple program... [ 38.033996] cgroup: Unknown subsys name 'net' [ 38.100818] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 03:10:15 Registers: info registers vcpu 0 RAX=0000000000000001 RBX=0000000000000001 RCX=0000000000000000 RDX=0000000000000001 RSI=00000000000000fb RDI=0000000000000001 RBP=ffff8880147d7638 RSP=ffff8880147d7570 R8 =0000000000000001 R9 =ffffed10028faeba R10=ffff8880147d75d7 R11=0000000000000000 R12=0000000000000001 R13=0000000000000000 R14=0000000000000001 R15=dffffc0000000000 RIP=ffffffff8112993a RFL=00000002 [-------] 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 00007f5471038900 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=00007f93e5d87650 CR3=000000000c5fc000 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=756f6a2f646d65747379732f6e75722f XMM01=00676f6c7379732f6c616e72756f6a2f XMM02=756f6a2f646d65747379732f6e75722f XMM03=006c616e72756f6a2f646d6574737973 XMM04=5d190f098743022800000000000ae988 XMM05=b1cb938b382521a80000000000135408 XMM06=4fda316b135da52b00000000001341f8 XMM07=fb795ef6d65770560000000000124778 XMM08=4f5453444600273d67736d000d0a0920 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8450c50e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffff888008e27e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=0000000000000001 R12=ffffffff85d3bed0 R13=1ffff110011c4fd3 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 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=00007ffea56b6428 CR3=0000000010274000 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=30313a3330203032206e754a3e36383c XMM01=7365733a646873732878696e755f6d61 XMM02=736f6c63206e6f6973736573203a296e XMM03=5f6d6170203a5d3932325b6468737320 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320383834 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000