syzkaller login: [ 60.716665] BUG: Bad rss-counter state mm:000000004fee2120 type:MM_FILEPAGES val:33 [ 60.718116] BUG: Bad rss-counter state mm:000000004fee2120 type:MM_ANONPAGES val:22 [ 60.905354] ================================================================== [ 60.906239] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 60.907149] Read of size 8 at addr ffff88800c705058 by task sshd/220 [ 60.908072] [ 60.908292] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 60.909142] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 60.910093] Call Trace: [ 60.910403] [ 60.910683] dump_stack_lvl+0x91/0xf0 [ 60.911160] print_report+0xcc/0x620 [ 60.911635] ? __virt_addr_valid+0x102/0x340 [ 60.912173] ? vma_interval_tree_remove+0xc75/0xec0 [ 60.912786] ? vma_interval_tree_remove+0xc75/0xec0 [ 60.913396] kasan_report+0xbe/0xf0 [ 60.913865] ? vma_interval_tree_remove+0xc75/0xec0 [ 60.914481] vma_interval_tree_remove+0xc75/0xec0 [ 60.915074] vma_prepare+0xc54/0x11a0 [ 60.915545] __split_vma+0x5af/0x950 [ 60.916012] ? __pfx___split_vma+0x10/0x10 [ 60.916529] ? find_held_lock+0x2c/0x110 [ 60.917075] do_vmi_align_munmap+0x2ba/0x11f0 [ 60.917632] ? lock_is_held_type+0x9f/0x120 [ 60.918166] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 60.918762] ? mtree_range_walk+0x632/0x900 [ 60.919311] ? mas_walk+0x5c7/0x7c0 [ 60.919788] do_vmi_munmap+0x1f1/0x2b0 [ 60.920279] mmap_region+0x1f9/0x2660 [ 60.920764] ? vm_mmap_pgoff+0x15c/0x3a0 [ 60.921268] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 60.921972] ? __pfx_lock_acquire+0x10/0x10 [ 60.922502] ? __pfx_mmap_region+0x10/0x10 [ 60.923027] ? security_mmap_addr+0x7d/0xa0 [ 60.923553] ? get_unmapped_area+0x1f5/0x3f0 [ 60.924098] do_mmap+0x854/0xf00 [ 60.924529] vm_mmap_pgoff+0x1a6/0x3a0 [ 60.925027] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 60.925590] ksys_mmap_pgoff+0x3af/0x500 [ 60.926092] do_syscall_64+0x3f/0x90 [ 60.926564] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 60.927204] RIP: 0033:0x7fb9e92ebd82 [ 60.927653] 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 [ 60.929762] RSP: 002b:00007ffe7776f468 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 60.930653] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fb9e92ebd82 [ 60.931489] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fb9e8725000 [ 60.932321] RBP: 00007fb9e8725000 R08: 0000000000000009 R09: 0000000000001000 [ 60.933164] R10: 0000000000000812 R11: 0000000000000206 R12: 00005572f0f34ec0 [ 60.934001] R13: 00007ffe7776f480 R14: 00007ffe7776f4b0 R15: 00007ffe7776f810 [ 60.934839] [ 60.935126] [ 60.935339] Allocated by task 213: [ 60.935764] kasan_save_stack+0x22/0x50 [ 60.936262] kasan_set_track+0x25/0x30 [ 60.936759] __kasan_slab_alloc+0x59/0x70 [ 60.937276] kmem_cache_alloc+0x16b/0x370 [ 60.937788] vm_area_dup+0x20/0x160 [ 60.938238] __split_vma+0x170/0x950 [ 60.938697] split_vma+0xc6/0x110 [ 60.939130] mprotect_fixup+0x8d2/0xb30 [ 60.939624] do_mprotect_pkey+0x87e/0xd40 [ 60.940138] __x64_sys_mprotect+0x78/0xc0 [ 60.940652] do_syscall_64+0x3f/0x90 [ 60.941141] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 60.941775] [ 60.941986] Freed by task 213: [ 60.942368] kasan_save_stack+0x22/0x50 [ 60.942862] kasan_set_track+0x25/0x30 [ 60.943348] kasan_save_free_info+0x2b/0x50 [ 60.943870] __kasan_slab_free+0x10a/0x190 [ 60.944396] kmem_cache_free+0x10d/0x4d0 [ 60.944902] rcu_core+0x8c8/0x2860 [ 60.945344] __do_softirq+0x1b7/0x7d4 [ 60.945816] [ 60.946029] Last potentially related work creation: [ 60.946601] kasan_save_stack+0x22/0x50 [ 60.947097] __kasan_record_aux_stack+0x8e/0xa0 [ 60.947661] __call_rcu_common.constprop.0+0x6a/0xb90 [ 60.948291] remove_vma+0x139/0x170 [ 60.948754] do_vmi_align_munmap+0xd4a/0x11f0 [ 60.949367] do_vmi_munmap+0x1f1/0x2b0 [ 60.949850] __vm_munmap+0x138/0x3a0 [ 60.950313] __x64_sys_munmap+0x59/0x80 [ 60.950805] do_syscall_64+0x3f/0x90 [ 60.951278] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 60.951918] [ 60.952130] The buggy address belongs to the object at ffff88800c705000 [ 60.952130] which belongs to the cache vm_area_struct of size 168 [ 60.953589] The buggy address is located 88 bytes inside of [ 60.953589] freed 168-byte region [ffff88800c705000, ffff88800c7050a8) [ 60.954962] [ 60.955174] The buggy address belongs to the physical page: [ 60.955821] page:00000000ff5163e2 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xc705 [ 60.956901] memcg:ffff88800d3ba801 [ 60.957319] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 60.958006] page_type: 0xffffffff() [ 60.958451] raw: 0100000000000200 ffff8880087a0c80 0000000000000000 dead000000000001 [ 60.959353] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d3ba801 [ 60.960245] page dumped because: kasan: bad access detected [ 60.960905] [ 60.961117] Memory state around the buggy address: [ 60.961687] ffff88800c704f00: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc [ 60.962527] ffff88800c704f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 60.963372] >ffff88800c705000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 60.964206] ^ [ 60.964939] ffff88800c705080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 60.965785] ffff88800c705100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 60.966617] ================================================================== [ 60.967557] Disabling lock debugging due to kernel taint [ 62.945809] BUG: Bad rss-counter state mm:00000000addb94c9 type:MM_FILEPAGES val:33 [ 62.946797] BUG: Bad rss-counter state mm:00000000addb94c9 type:MM_ANONPAGES val:22 [ 63.410452] BUG: Bad rss-counter state mm:00000000779a2dd2 type:MM_FILEPAGES val:33 [ 63.411527] BUG: Bad rss-counter state mm:00000000779a2dd2 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:38693' (ECDSA) to the list of known hosts. 2023/06/21 04:41:28 fuzzer started 2023/06/21 04:41:28 dialing manager at localhost:36067 2023/06/21 04:41:28 checking machine... 2023/06/21 04:41:28 checking revisions... [ 64.161675] kmemleak: Automatic memory scanning thread ended 2023/06/21 04:41:29 testing simple program... [ 64.210601] cgroup: Unknown subsys name 'net' [ 64.271738] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 04:41:28 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=0000000000000001 RCX=0000000000000001 RDX=1ffff11001934f25 RSI=ffffffff818df6f4 RDI=ffff88800c9a78c8 RBP=ffff88800c9a7920 RSP=ffff88800c9a7858 R8 =0000000000000001 R9 =ffff88800c9a7908 R10=0000000000038001 R11=00000000000244c6 R12=ffff88800c9a7928 R13=ffff88800c9a7910 R14=ffff888019c2b680 R15=ffff88800c9a78c8 RIP=ffffffff81130682 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 00007fe6d997e900 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=00007fe6d9f360b0 CR3=00000000180b8000 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=25252525252525252525252525252525 XMM01=000000000000000000000000000000ff XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=662079726f6d656d20666f2074756f00 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8451250e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffff888008e07e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=ffff888008c04400 R12=ffffffff85d3d350 R13=1ffff110011c0fd3 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 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=00007f37a43a0830 CR3=000000000d6f0000 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=578e438f11b0048877447159b3522630 XMM02=ec2efd57dc4c00df000000000011a968 XMM03=ae802392f53e5832000000000011aa38 XMM04=a61362c1fa1a8d3900000000000ae988 XMM05=19e9129bd510f2350000000000131d60 XMM06=4fda316b135da52b0000000000131be8 XMM07=e042d86d42eb936e00000000001220f8 XMM08=ae802392f53e5832000000000011aa38 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000