syzkaller login: [ 31.676631] BUG: Bad rss-counter state mm:0000000011e48bf1 type:MM_FILEPAGES val:33 [ 31.678104] BUG: Bad rss-counter state mm:0000000011e48bf1 type:MM_ANONPAGES val:22 [ 31.838392] ================================================================== [ 31.839339] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.840295] Read of size 8 at addr ffff88800d6a46b0 by task sshd/219 [ 31.841072] [ 31.841300] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 31.842330] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.843322] Call Trace: [ 31.843658] [ 31.843954] dump_stack_lvl+0x91/0xf0 [ 31.844456] print_report+0xcc/0x620 [ 31.844951] ? __virt_addr_valid+0x102/0x340 [ 31.845524] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.846172] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.846820] kasan_report+0xbe/0xf0 [ 31.847314] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.847943] vma_interval_tree_remove+0xc75/0xec0 [ 31.848561] vma_prepare+0xc54/0x11a0 [ 31.849048] __split_vma+0x5af/0x950 [ 31.849532] ? __pfx___split_vma+0x10/0x10 [ 31.850075] ? find_held_lock+0x2c/0x110 [ 31.850609] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.851210] ? lock_is_held_type+0x9f/0x120 [ 31.851763] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.852386] ? mtree_range_walk+0x632/0x900 [ 31.852938] ? mas_walk+0x5c7/0x7c0 [ 31.853419] do_vmi_munmap+0x1f1/0x2b0 [ 31.853920] mmap_region+0x1f9/0x2660 [ 31.854407] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.854948] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.855675] ? __pfx_lock_acquire+0x10/0x10 [ 31.856220] ? __pfx_mmap_region+0x10/0x10 [ 31.856763] ? security_mmap_addr+0x7d/0xa0 [ 31.857309] ? get_unmapped_area+0x1f5/0x3f0 [ 31.857877] do_mmap+0x854/0xf00 [ 31.858320] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.858843] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.859420] ksys_mmap_pgoff+0x3af/0x500 [ 31.859944] do_syscall_64+0x3f/0x90 [ 31.860427] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.861094] RIP: 0033:0x7f083e3ebd82 [ 31.861566] 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 [ 31.863774] RSP: 002b:00007ffe650bd248 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.864683] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f083e3ebd82 [ 31.865547] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f083d825000 [ 31.866407] RBP: 00007f083d825000 R08: 0000000000000009 R09: 0000000000001000 [ 31.867293] R10: 0000000000000812 R11: 0000000000000206 R12: 0000559689c11ec0 [ 31.868164] R13: 00007ffe650bd260 R14: 00007ffe650bd290 R15: 00007ffe650bd5f0 [ 31.869032] [ 31.869328] [ 31.869553] Allocated by task 212: [ 31.869989] kasan_save_stack+0x22/0x50 [ 31.870511] kasan_set_track+0x25/0x30 [ 31.871021] __kasan_slab_alloc+0x59/0x70 [ 31.871571] kmem_cache_alloc+0x16b/0x370 [ 31.872099] vm_area_dup+0x20/0x160 [ 31.872570] __split_vma+0x170/0x950 [ 31.873045] split_vma+0xc6/0x110 [ 31.873500] mprotect_fixup+0x8d2/0xb30 [ 31.874014] do_mprotect_pkey+0x87e/0xd40 [ 31.874547] __x64_sys_mprotect+0x78/0xc0 [ 31.875095] do_syscall_64+0x3f/0x90 [ 31.875594] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.876241] [ 31.876457] Freed by task 212: [ 31.876857] kasan_save_stack+0x22/0x50 [ 31.877380] kasan_set_track+0x25/0x30 [ 31.877890] kasan_save_free_info+0x2b/0x50 [ 31.878434] __kasan_slab_free+0x10a/0x190 [ 31.878988] kmem_cache_free+0x10d/0x4d0 [ 31.879509] rcu_core+0x8c8/0x2860 [ 31.879980] __do_softirq+0x1b7/0x7d4 [ 31.880465] [ 31.880685] Last potentially related work creation: [ 31.881273] kasan_save_stack+0x22/0x50 [ 31.881793] __kasan_record_aux_stack+0x8e/0xa0 [ 31.882382] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.883133] remove_vma+0x139/0x170 [ 31.883593] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.884162] do_vmi_munmap+0x1f1/0x2b0 [ 31.884659] __vm_munmap+0x138/0x3a0 [ 31.885141] __x64_sys_munmap+0x59/0x80 [ 31.885651] do_syscall_64+0x3f/0x90 [ 31.886136] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.886810] [ 31.887027] Second to last potentially related work creation: [ 31.887723] kasan_save_stack+0x22/0x50 [ 31.888229] __kasan_record_aux_stack+0x8e/0xa0 [ 31.888814] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.889475] remove_vma+0x139/0x170 [ 31.889952] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.890521] do_vmi_munmap+0x1f1/0x2b0 [ 31.891037] mmap_region+0x1f9/0x2660 [ 31.891530] do_mmap+0x854/0xf00 [ 31.891975] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.892470] ksys_mmap_pgoff+0x3af/0x500 [ 31.892993] do_syscall_64+0x3f/0x90 [ 31.893480] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.894125] [ 31.894346] The buggy address belongs to the object at ffff88800d6a4658 [ 31.894346] which belongs to the cache vm_area_struct of size 168 [ 31.895866] The buggy address is located 88 bytes inside of [ 31.895866] freed 168-byte region [ffff88800d6a4658, ffff88800d6a4700) [ 31.897283] [ 31.897503] The buggy address belongs to the physical page: [ 31.898169] page:00000000d8d524b5 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd6a4 [ 31.899268] memcg:ffff88800d934e01 [ 31.899703] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 31.900426] page_type: 0xffffffff() [ 31.900886] raw: 0100000000000200 ffff8880087a0c80 ffffea0000252400 dead000000000003 [ 31.901826] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d934e01 [ 31.902739] page dumped because: kasan: bad access detected [ 31.903424] [ 31.903641] Memory state around the buggy address: [ 31.904229] ffff88800d6a4580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.905106] ffff88800d6a4600: fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb [ 31.905980] >ffff88800d6a4680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.906853] ^ [ 31.907443] ffff88800d6a4700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 31.908312] ffff88800d6a4780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 31.909194] ================================================================== [ 31.910237] Disabling lock debugging due to kernel taint [ 34.437114] BUG: Bad rss-counter state mm:000000002bd413c4 type:MM_FILEPAGES val:33 [ 34.438725] BUG: Bad rss-counter state mm:000000002bd413c4 type:MM_ANONPAGES val:22 [ 34.911489] BUG: Bad rss-counter state mm:00000000021fe0c1 type:MM_FILEPAGES val:33 [ 34.912680] BUG: Bad rss-counter state mm:00000000021fe0c1 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:2150' (ECDSA) to the list of known hosts. 2023/06/20 20:29:27 fuzzer started 2023/06/20 20:29:27 dialing manager at localhost:36067 2023/06/20 20:29:27 checking machine... 2023/06/20 20:29:27 checking revisions... [ 35.606699] kmemleak: Automatic memory scanning thread ended 2023/06/20 20:29:27 testing simple program... [ 35.656009] cgroup: Unknown subsys name 'net' [ 35.695079] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 20:29:27 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffff88800f647e20 RCX=0000000000000000 RDX=ffff888016b30000 RSI=ffffffff844a56a3 RDI=ffff88800f647e20 RBP=0000000000000001 RSP=ffff88800f647d88 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=0000000000000000 R12=0000000000000007 R13=00005618409dbed8 R14=0000000000000040 R15=ffff88800d5a8000 RIP=ffffffff814c0860 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 =0000 0000000000000000 00000000 00000000 DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f48d0a5a900 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=00005618409dbed8 CR3=000000000e6c8000 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=ffffffff00ffffffffffffffffffffff XMM01=707465675f6c697475646f6d6d61705f XMM02=ff000000000000ff0000000000ff0000 XMM03=66207463656e6e6f6373696420646576 XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000 XMM06=0d0c0f0e09080b0a0504070601000302 XMM07=00000000000000000000000000000000 XMM08=000a0d732a2e25006c61746166003367 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=0000000000000001 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=00007ffe24e845f8 CR3=0000000005482000 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=00007f10302215100000557e18a11790 XMM02=6f6974707972636e6561737268746977 XMM03=00000000000000000000000000777074 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=ffffffffffff00ffffff00ffffff00ff XMM08=00002000000000202020002020200000 XMM09=ffffffffffff00ffffff00ffffff00ff XMM10=00002000000000202020002020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000