syzkaller login: [ 46.660417] BUG: Bad rss-counter state mm:000000004363c0b6 type:MM_FILEPAGES val:33 [ 46.661483] BUG: Bad rss-counter state mm:000000004363c0b6 type:MM_ANONPAGES val:22 [ 46.826788] ================================================================== [ 46.827695] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 46.828657] Read of size 8 at addr ffff88800e8f3a50 by task sshd/219 [ 46.829414] [ 46.829634] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 46.830588] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 46.831573] Call Trace: [ 46.831891] [ 46.832183] dump_stack_lvl+0x91/0xf0 [ 46.832674] print_report+0xcc/0x620 [ 46.833154] ? __virt_addr_valid+0x102/0x340 [ 46.833711] ? vma_interval_tree_remove+0xc75/0xec0 [ 46.834336] ? vma_interval_tree_remove+0xc75/0xec0 [ 46.834950] kasan_report+0xbe/0xf0 [ 46.835419] ? vma_interval_tree_remove+0xc75/0xec0 [ 46.836030] vma_interval_tree_remove+0xc75/0xec0 [ 46.836647] vma_prepare+0xc54/0x11a0 [ 46.837121] __split_vma+0x5af/0x950 [ 46.837583] ? __pfx___split_vma+0x10/0x10 [ 46.838103] ? find_held_lock+0x2c/0x110 [ 46.838616] do_vmi_align_munmap+0x2ba/0x11f0 [ 46.839173] ? lock_is_held_type+0x9f/0x120 [ 46.839701] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 46.840321] ? mtree_range_walk+0x632/0x900 [ 46.840870] ? mas_walk+0x5c7/0x7c0 [ 46.841336] do_vmi_munmap+0x1f1/0x2b0 [ 46.841819] mmap_region+0x1f9/0x2660 [ 46.842294] ? vm_mmap_pgoff+0x15c/0x3a0 [ 46.842796] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 46.843499] ? __pfx_lock_acquire+0x10/0x10 [ 46.844022] ? __pfx_mmap_region+0x10/0x10 [ 46.844562] ? security_mmap_addr+0x7d/0xa0 [ 46.845087] ? get_unmapped_area+0x1f5/0x3f0 [ 46.845628] do_mmap+0x854/0xf00 [ 46.846063] vm_mmap_pgoff+0x1a6/0x3a0 [ 46.846553] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 46.847112] ksys_mmap_pgoff+0x3af/0x500 [ 46.847614] do_syscall_64+0x3f/0x90 [ 46.848093] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 46.848752] RIP: 0033:0x7fe82423fd82 [ 46.849215] 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 [ 46.851436] RSP: 002b:00007fff6b4cb9f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 46.852357] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fe82423fd82 [ 46.853200] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fe823679000 [ 46.854057] RBP: 00007fe823679000 R08: 0000000000000009 R09: 0000000000001000 [ 46.854888] R10: 0000000000000812 R11: 0000000000000206 R12: 000055a5160f6f70 [ 46.855736] R13: 00007fff6b4cba10 R14: 00007fff6b4cba40 R15: 00007fff6b4cbda0 [ 46.856595] [ 46.856887] [ 46.857101] Allocated by task 212: [ 46.857523] kasan_save_stack+0x22/0x50 [ 46.858030] kasan_set_track+0x25/0x30 [ 46.858531] __kasan_slab_alloc+0x59/0x70 [ 46.859081] kmem_cache_alloc+0x16b/0x370 [ 46.859617] vm_area_dup+0x20/0x160 [ 46.860087] __split_vma+0x170/0x950 [ 46.860568] split_vma+0xc6/0x110 [ 46.861020] mprotect_fixup+0x8d2/0xb30 [ 46.861523] do_mprotect_pkey+0x87e/0xd40 [ 46.862040] __x64_sys_mprotect+0x78/0xc0 [ 46.862563] do_syscall_64+0x3f/0x90 [ 46.863036] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 46.863690] [ 46.863910] Freed by task 212: [ 46.864325] kasan_save_stack+0x22/0x50 [ 46.864827] kasan_set_track+0x25/0x30 [ 46.865329] kasan_save_free_info+0x2b/0x50 [ 46.865868] __kasan_slab_free+0x10a/0x190 [ 46.866405] kmem_cache_free+0x10d/0x4d0 [ 46.866923] rcu_core+0x8c8/0x2860 [ 46.867376] __do_softirq+0x1b7/0x7d4 [ 46.867855] [ 46.868077] Last potentially related work creation: [ 46.868665] kasan_save_stack+0x22/0x50 [ 46.869169] __kasan_record_aux_stack+0x8e/0xa0 [ 46.869746] __call_rcu_common.constprop.0+0x6a/0xb90 [ 46.870394] remove_vma+0x139/0x170 [ 46.870844] do_vmi_align_munmap+0xd4a/0x11f0 [ 46.871401] do_vmi_munmap+0x1f1/0x2b0 [ 46.871886] __vm_munmap+0x138/0x3a0 [ 46.872362] __x64_sys_munmap+0x59/0x80 [ 46.872863] do_syscall_64+0x3f/0x90 [ 46.873343] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 46.873984] [ 46.874201] Second to last potentially related work creation: [ 46.874892] kasan_save_stack+0x22/0x50 [ 46.875400] __kasan_record_aux_stack+0x8e/0xa0 [ 46.875980] __call_rcu_common.constprop.0+0x6a/0xb90 [ 46.876668] remove_vma+0x139/0x170 [ 46.877126] do_vmi_align_munmap+0xd4a/0x11f0 [ 46.877682] do_vmi_munmap+0x1f1/0x2b0 [ 46.878168] mmap_region+0x1f9/0x2660 [ 46.878647] do_mmap+0x854/0xf00 [ 46.879080] vm_mmap_pgoff+0x1a6/0x3a0 [ 46.879565] ksys_mmap_pgoff+0x3af/0x500 [ 46.880071] do_syscall_64+0x3f/0x90 [ 46.880544] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 46.881188] [ 46.881404] The buggy address belongs to the object at ffff88800e8f39f8 [ 46.881404] which belongs to the cache vm_area_struct of size 168 [ 46.882882] The buggy address is located 88 bytes inside of [ 46.882882] freed 168-byte region [ffff88800e8f39f8, ffff88800e8f3aa0) [ 46.884304] [ 46.884523] The buggy address belongs to the physical page: [ 46.885186] page:00000000022e9c33 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe8f3 [ 46.886280] memcg:ffff88800d05b401 [ 46.886712] flags: 0x100000000000200(slab|node=0|zone=1) [ 46.887358] page_type: 0xffffffff() [ 46.887814] raw: 0100000000000200 ffff88800879fc80 ffffea0000313c80 0000000000000006 [ 46.888744] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d05b401 [ 46.889656] page dumped because: kasan: bad access detected [ 46.890319] [ 46.890536] Memory state around the buggy address: [ 46.891118] ffff88800e8f3900: fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 46.891970] ffff88800e8f3980: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa [ 46.892845] >ffff88800e8f3a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 46.893708] ^ [ 46.894430] ffff88800e8f3a80: fb fb fb fb fc fc fc fc fc fc fc fc 00 00 00 00 [ 46.895310] ffff88800e8f3b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 46.896186] ================================================================== [ 46.897164] Disabling lock debugging due to kernel taint [ 48.753315] BUG: Bad rss-counter state mm:00000000da488d1f type:MM_FILEPAGES val:33 [ 48.754446] BUG: Bad rss-counter state mm:00000000da488d1f type:MM_ANONPAGES val:22 [ 49.234085] BUG: Bad rss-counter state mm:000000000e083226 type:MM_FILEPAGES val:33 [ 49.235836] BUG: Bad rss-counter state mm:000000000e083226 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:18842' (ECDSA) to the list of known hosts. 2023/06/19 17:30:39 fuzzer started 2023/06/19 17:30:40 dialing manager at localhost:44161 2023/06/19 17:30:40 checking machine... 2023/06/19 17:30:40 checking revisions... [ 49.966570] kmemleak: Automatic memory scanning thread ended 2023/06/19 17:30:40 testing simple program... [ 50.018607] cgroup: Unknown subsys name 'net' [ 50.071778] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 17:30:23 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000000 RCX=ffffffff83c632d1 RDX=ffff888018dbb680 RSI=0000000000000048 RDI=00000000000000ff RBP=0000000000000000 RSP=ffff88800fc276a0 R8 =0000000000000005 R9 =00000000000000ff R10=0000000000000047 R11=00000f8200000f82 R12=0000000000000000 R13=0000000000000048 R14=dffffc0000000000 R15=0000000000000001 RIP=ffffffff814c0388 RFL=00000206 [-----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 00007f682d197900 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=00007f682d74e618 CR3=00000000094a8000 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=6e69676f6c5f6d61702c78756e696c65 XMM02=755f6d61702c74696d7265705f6d6170 XMM03=2c766e655f6d61702c7374696d696c5f XMM04=6d61702c766e655f6d61702c7374696d XMM05=78696e755f6d61702c74696d7265705f XMM06=6469756e69676f6c5f6d61702c78756e XMM07=672065736f6c635f6e6f69737365733a XMM08=61662029286e65706f5f746964756100 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=dffffc0000000000 RBX=ffffffff812889a5 RCX=ffffffff864b1a01 RDX=1ffff1100d9e1359 RSI=0000000000000000 RDI=ffffffff812889a5 RBP=ffffffff812889a5 RSP=ffff88806cf09a20 R8 =ffffffff864b1a38 R9 =ffff88806cf09ab0 R10=0000000000038001 R11=00000000000b53b8 R12=0000000000000001 R13=0000000000000000 R14=ffff888008d751c0 R15=ffff88800da94780 RIP=ffffffff811fc772 RFL=00000287 [--S--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 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=00007f20698132f0 CR3=000000000d29e000 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=30333a3731203931206e754a3e36383c XMM01=7365733a646873732878696e755f6d61 XMM02=736f6c63206e6f6973736573203a296e XMM03=5f6d6170203a5d3832325b6468737320 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320383434 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000