syzkaller login: [ 30.696463] BUG: Bad rss-counter state mm:00000000acb04aa1 type:MM_FILEPAGES val:33 [ 30.697780] BUG: Bad rss-counter state mm:00000000acb04aa1 type:MM_ANONPAGES val:22 [ 30.851433] ================================================================== [ 30.852503] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.853617] Read of size 8 at addr ffff88801803b058 by task sshd/220 [ 30.854679] [ 30.854944] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 30.855887] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.856954] Call Trace: [ 30.857294] [ 30.857593] dump_stack_lvl+0x91/0xf0 [ 30.858118] print_report+0xcc/0x620 [ 30.858640] ? __virt_addr_valid+0x102/0x340 [ 30.859241] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.859899] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.860569] kasan_report+0xbe/0xf0 [ 30.861077] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.861747] vma_interval_tree_remove+0xc75/0xec0 [ 30.862406] vma_prepare+0xc54/0x11a0 [ 30.862920] __split_vma+0x5af/0x950 [ 30.863435] ? __pfx___split_vma+0x10/0x10 [ 30.864001] ? find_held_lock+0x2c/0x110 [ 30.864581] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.865196] ? lock_is_held_type+0x9f/0x120 [ 30.865773] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.866424] ? mtree_range_walk+0x632/0x900 [ 30.867021] ? mas_walk+0x5c7/0x7c0 [ 30.867538] do_vmi_munmap+0x1f1/0x2b0 [ 30.868066] mmap_region+0x1f9/0x2660 [ 30.868587] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.869148] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.869905] ? __pfx_lock_acquire+0x10/0x10 [ 30.870479] ? __pfx_mmap_region+0x10/0x10 [ 30.871045] ? security_mmap_addr+0x7d/0xa0 [ 30.871608] ? get_unmapped_area+0x1f5/0x3f0 [ 30.872190] do_mmap+0x854/0xf00 [ 30.872689] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.873218] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.873819] ksys_mmap_pgoff+0x3af/0x500 [ 30.874361] do_syscall_64+0x3f/0x90 [ 30.874870] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.875565] RIP: 0033:0x7f3e8185ed82 [ 30.876048] 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 [ 30.878372] RSP: 002b:00007ffc8f3f7028 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.879361] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f3e8185ed82 [ 30.880286] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f3e80c98000 [ 30.881221] RBP: 00007f3e80c98000 R08: 0000000000000009 R09: 0000000000001000 [ 30.882145] R10: 0000000000000812 R11: 0000000000000206 R12: 00005601eb9fbf70 [ 30.883069] R13: 00007ffc8f3f7040 R14: 00007ffc8f3f7070 R15: 00007ffc8f3f73d0 [ 30.884002] [ 30.884320] [ 30.884555] Allocated by task 213: [ 30.885011] kasan_save_stack+0x22/0x50 [ 30.885559] kasan_set_track+0x25/0x30 [ 30.886096] __kasan_slab_alloc+0x59/0x70 [ 30.886669] kmem_cache_alloc+0x16b/0x370 [ 30.887233] vm_area_dup+0x20/0x160 [ 30.887721] __split_vma+0x170/0x950 [ 30.888215] split_vma+0xc6/0x110 [ 30.888699] mprotect_fixup+0x8d2/0xb30 [ 30.889241] do_mprotect_pkey+0x87e/0xd40 [ 30.889805] __x64_sys_mprotect+0x78/0xc0 [ 30.890380] do_syscall_64+0x3f/0x90 [ 30.890887] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.891577] [ 30.891806] Freed by task 213: [ 30.892231] kasan_save_stack+0x22/0x50 [ 30.892795] kasan_set_track+0x25/0x30 [ 30.893327] kasan_save_free_info+0x2b/0x50 [ 30.893894] __kasan_slab_free+0x10a/0x190 [ 30.894482] kmem_cache_free+0x10d/0x4d0 [ 30.895046] rcu_core+0x8c8/0x2860 [ 30.895541] __do_softirq+0x1b7/0x7d4 [ 30.896102] [ 30.896340] Last potentially related work creation: [ 30.897005] kasan_save_stack+0x22/0x50 [ 30.897564] __kasan_record_aux_stack+0x8e/0xa0 [ 30.898201] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.898921] remove_vma+0x139/0x170 [ 30.899425] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.900046] do_vmi_munmap+0x1f1/0x2b0 [ 30.900599] __vm_munmap+0x138/0x3a0 [ 30.901118] __x64_sys_munmap+0x59/0x80 [ 30.901671] do_syscall_64+0x3f/0x90 [ 30.902195] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.902907] [ 30.903145] The buggy address belongs to the object at ffff88801803b000 [ 30.903145] which belongs to the cache vm_area_struct of size 168 [ 30.904789] The buggy address is located 88 bytes inside of [ 30.904789] freed 168-byte region [ffff88801803b000, ffff88801803b0a8) [ 30.906348] [ 30.906586] The buggy address belongs to the physical page: [ 30.907320] page:00000000f7672575 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1803b [ 30.908536] memcg:ffff88800fe3f901 [ 30.909008] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.909728] page_type: 0xffffffff() [ 30.910229] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 30.911248] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800fe3f901 [ 30.912258] page dumped because: kasan: bad access detected [ 30.913017] [ 30.913254] Memory state around the buggy address: [ 30.913900] ffff88801803af00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.914854] ffff88801803af80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.915799] >ffff88801803b000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.916768] ^ [ 30.917577] ffff88801803b080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 30.918523] ffff88801803b100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.919468] ================================================================== [ 30.920504] Disabling lock debugging due to kernel taint [ 32.898261] BUG: Bad rss-counter state mm:0000000044c27787 type:MM_FILEPAGES val:33 [ 32.899195] BUG: Bad rss-counter state mm:0000000044c27787 type:MM_ANONPAGES val:22 [ 33.490656] BUG: Bad rss-counter state mm:00000000f77f8d7c type:MM_FILEPAGES val:33 [ 33.491834] BUG: Bad rss-counter state mm:00000000f77f8d7c type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:33019' (ECDSA) to the list of known hosts. 2023/06/19 11:03:15 fuzzer started 2023/06/19 11:03:15 dialing manager at localhost:44161 2023/06/19 11:03:15 checking machine... 2023/06/19 11:03:15 checking revisions... [ 34.144450] kmemleak: Automatic memory scanning thread ended 2023/06/19 11:03:15 testing simple program... [ 34.196853] cgroup: Unknown subsys name 'net' [ 34.315102] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 11:03:14 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffff888008d7fa10 RCX=0000000000000000 RDX=0000000000000070 RSI=0000000000000000 RDI=ffff888008d7f978 RBP=ffff888008d70000 RSP=ffff888008d7f920 R8 =0000000000000004 R9 =0000000000000000 R10=ffff888008d7f978 R11=0000000000000128 R12=0000000000000000 R13=ffff888008d7f9a0 R14=ffff888008d70000 R15=ffff888008d7f978 RIP=ffffffff8450d41a RFL=00000247 [---Z-PC] 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 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=00007f6130f0b650 CR3=000000000db7a000 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=00000016ccdc2d14 RBX=0000000000000000 RCX=00000000000006e0 RDX=0000000000000016 RSI=ffff88806cf28140 RDI=00000000000535ff RBP=ffff88806cf28140 RSP=ffff88806cf09ee0 R8 =0000000000000007 R9 =0000000000000000 R10=00000000000eea96 R11=0000000000000001 R12=00000000000535ff R13=0000000000000000 R14=0000000000000000 R15=ffff88806cf2b940 RIP=ffffffff811062a5 RFL=00000013 [----A-C] 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 00007efe72f54900 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=00007efe723667a0 CR3=0000000009a16000 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=756f6a2f646d65747379732f6e75722f XMM01=00676f6c7379732f6c616e72756f6a2f XMM02=756f6a2f646d65747379732f6e75722f XMM03=006c616e72756f6a2f646d6574737973 XMM04=06cc4513bb92770f00000000000ae988 XMM05=bf30006c111f79810000000000135678 XMM06=4fda316b135da52b0000000000134468 XMM07=fb795ef6d657705600000000001249d8 XMM08=4f5453444600273d67736d000d0a0920 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000