syzkaller login: [ 30.717587] BUG: Bad rss-counter state mm:00000000d1ce7d29 type:MM_FILEPAGES val:33 [ 30.718862] BUG: Bad rss-counter state mm:00000000d1ce7d29 type:MM_ANONPAGES val:22 [ 30.824711] ================================================================== [ 30.825699] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.826419] Read of size 8 at addr ffff888016587058 by task sshd/221 [ 30.827006] [ 30.827175] CPU: 0 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 30.827897] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.828645] Call Trace: [ 30.828890] [ 30.829125] dump_stack_lvl+0x91/0xf0 [ 30.829510] print_report+0xcc/0x620 [ 30.829881] ? __virt_addr_valid+0x102/0x340 [ 30.830303] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.830776] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.831248] kasan_report+0xbe/0xf0 [ 30.831613] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.832085] vma_interval_tree_remove+0xc75/0xec0 [ 30.832548] vma_prepare+0xc54/0x11a0 [ 30.832917] __split_vma+0x5af/0x950 [ 30.833304] ? __pfx___split_vma+0x10/0x10 [ 30.833716] ? find_held_lock+0x2c/0x110 [ 30.834120] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.834561] ? lock_is_held_type+0x9f/0x120 [ 30.834981] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.835451] ? mtree_range_walk+0x632/0x900 [ 30.835880] ? mas_walk+0x5c7/0x7c0 [ 30.836251] do_vmi_munmap+0x1f1/0x2b0 [ 30.836638] mmap_region+0x1f9/0x2660 [ 30.837033] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.837445] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.837856] ? __pfx_lock_acquire+0x10/0x10 [ 30.838148] ? __pfx_mmap_region+0x10/0x10 [ 30.838442] ? security_mmap_addr+0x7d/0xa0 [ 30.838750] ? get_unmapped_area+0x1f5/0x3f0 [ 30.839061] do_mmap+0x854/0xf00 [ 30.839311] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.839593] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.839916] ksys_mmap_pgoff+0x3af/0x500 [ 30.840215] do_syscall_64+0x3f/0x90 [ 30.840488] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.840855] RIP: 0033:0x7f0dc5a84d82 [ 30.841126] 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 [ 30.842300] RSP: 002b:00007ffc3babd638 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.842809] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f0dc5a84d82 [ 30.843301] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f0dc4ebe000 [ 30.843777] RBP: 00007f0dc4ebe000 R08: 0000000000000009 R09: 0000000000001000 [ 30.844256] R10: 0000000000000812 R11: 0000000000000206 R12: 0000562b562b6ec0 [ 30.844738] R13: 00007ffc3babd650 R14: 00007ffc3babd680 R15: 00007ffc3babd9e0 [ 30.845249] [ 30.845413] [ 30.845532] Allocated by task 214: [ 30.845777] kasan_save_stack+0x22/0x50 [ 30.846060] kasan_set_track+0x25/0x30 [ 30.846339] __kasan_slab_alloc+0x59/0x70 [ 30.846635] kmem_cache_alloc+0x16b/0x370 [ 30.846931] vm_area_dup+0x20/0x160 [ 30.847193] __split_vma+0x170/0x950 [ 30.847459] split_vma+0xc6/0x110 [ 30.847701] mprotect_fixup+0x8d2/0xb30 [ 30.847983] do_mprotect_pkey+0x87e/0xd40 [ 30.848282] __x64_sys_mprotect+0x78/0xc0 [ 30.848583] do_syscall_64+0x3f/0x90 [ 30.848849] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.849235] [ 30.849360] Freed by task 13: [ 30.849578] kasan_save_stack+0x22/0x50 [ 30.849867] kasan_set_track+0x25/0x30 [ 30.850149] kasan_save_free_info+0x2b/0x50 [ 30.850450] __kasan_slab_free+0x10a/0x190 [ 30.850747] kmem_cache_free+0x10d/0x4d0 [ 30.851041] rcu_core+0x8c8/0x2860 [ 30.851291] __do_softirq+0x1b7/0x7d4 [ 30.851562] [ 30.851686] Last potentially related work creation: [ 30.852018] kasan_save_stack+0x22/0x50 [ 30.852302] __kasan_record_aux_stack+0x8e/0xa0 [ 30.852632] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.852991] remove_vma+0x139/0x170 [ 30.853262] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.853584] do_vmi_munmap+0x1f1/0x2b0 [ 30.853855] __vm_munmap+0x138/0x3a0 [ 30.854115] __x64_sys_munmap+0x59/0x80 [ 30.854403] do_syscall_64+0x3f/0x90 [ 30.854675] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.855053] [ 30.855176] The buggy address belongs to the object at ffff888016587000 [ 30.855176] which belongs to the cache vm_area_struct of size 168 [ 30.856031] The buggy address is located 88 bytes inside of [ 30.856031] freed 168-byte region [ffff888016587000, ffff8880165870a8) [ 30.856858] [ 30.856983] The buggy address belongs to the physical page: [ 30.857385] page:00000000d1ac8b75 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x16587 [ 30.858012] memcg:ffff888017c6d401 [ 30.858253] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.858631] page_type: 0xffffffff() [ 30.858891] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 30.859421] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888017c6d401 [ 30.859953] page dumped because: kasan: bad access detected [ 30.860340] [ 30.860465] Memory state around the buggy address: [ 30.860800] ffff888016586f00: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc [ 30.861306] ffff888016586f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.861802] >ffff888016587000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.862298] ^ [ 30.862708] ffff888016587080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 30.863195] ffff888016587100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.863694] ================================================================== [ 30.864384] Disabling lock debugging due to kernel taint [ 32.681545] BUG: Bad rss-counter state mm:000000009a56edf7 type:MM_FILEPAGES val:33 [ 32.682330] BUG: Bad rss-counter state mm:000000009a56edf7 type:MM_ANONPAGES val:22 [ 33.123556] BUG: Bad rss-counter state mm:000000009f1cb5f3 type:MM_FILEPAGES val:33 [ 33.124743] BUG: Bad rss-counter state mm:000000009f1cb5f3 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:23303' (ECDSA) to the list of known hosts. 2023/06/20 03:38:35 fuzzer started 2023/06/20 03:38:35 dialing manager at localhost:44161 2023/06/20 03:38:35 checking machine... 2023/06/20 03:38:35 checking revisions... [ 33.850170] kmemleak: Automatic memory scanning thread ended 2023/06/20 03:38:35 testing simple program... [ 33.893889] cgroup: Unknown subsys name 'net' [ 33.949485] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 03:38:34 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffff88801651f5e8 RCX=ffffffff861c7682 RDX=1ffff11002ca3ebd RSI=ffff88801651faa8 RDI=ffff88801651f5e8 RBP=ffff88801651faa8 RSP=ffff88801651f540 R8 =ffffffff861c7686 R9 =ffff88801651f628 R10=0000000000038001 R11=0000000000038dc4 R12=0000000000000008 R13=ffff88801651f630 R14=ffff88801651fab0 R15=ffff88801651f5e8 RIP=ffffffff8113041a RFL=00000282 [--S----] 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 00007f127940a900 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=00007f12799c20b0 CR3=000000000e516000 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=00000000000000000000000000000000 XMM01=000000000000000000000000000000ff XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=ffbc64ffffbc44ffffbc34ffffbc9f00 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000003 RBX=0000000000000202 RCX=1ffffffff0ba7a02 RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff8452fffc RBP=ffff88801a384720 RSP=ffff88806cf09de0 R8 =0000000000000000 R9 =0000000000000000 R10=ffffffff85d3bed7 R11=00000000000b6996 R12=ffff88801a3847b0 R13=ffff88801a384760 R14=ffffffff813782a8 R15=ffff88800d0c6398 RIP=ffffffff8450b935 RFL=00000046 [---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 00007f9989112700 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=00007f31e3bcbda0 CR3=000000000da20000 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=2034333a38333a3330203032206e754a XMM01=73732878696e755f6d6170203a5d3033 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3033325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732034333a38333a3330203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000