[ 29.794699] BUG: Bad rss-counter state mm:000000003791636c type:MM_FILEPAGES val:33 [ 29.795920] BUG: Bad rss-counter state mm:000000003791636c type:MM_ANONPAGES val:22 [ 29.833134] ================================================================== [ 29.833991] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 29.834969] Read of size 8 at addr ffff88800f25f3f8 by task sshd/220 [ 29.835707] [ 29.835915] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 29.836725] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 29.837678] Call Trace: [ 29.837986] [ 29.838255] dump_stack_lvl+0x91/0xf0 [ 29.838731] print_report+0xcc/0x620 [ 29.839189] ? __virt_addr_valid+0x102/0x340 [ 29.839741] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.840325] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.840908] kasan_report+0xbe/0xf0 [ 29.841357] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.841944] vma_interval_tree_remove+0xc75/0xec0 [ 29.842516] vma_prepare+0xc54/0x11a0 [ 29.842991] __split_vma+0x5af/0x950 [ 29.843451] ? __pfx___split_vma+0x10/0x10 [ 29.843961] ? find_held_lock+0x2c/0x110 [ 29.844459] do_vmi_align_munmap+0x2ba/0x11f0 [ 29.844994] ? lock_is_held_type+0x9f/0x120 [ 29.845624] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 29.846485] ? mtree_range_walk+0x632/0x900 [ 29.847282] ? mas_walk+0x5c7/0x7c0 [ 29.847965] do_vmi_munmap+0x1f1/0x2b0 [ 29.848662] mmap_region+0x1f9/0x2660 [ 29.849300] ? vm_mmap_pgoff+0x15c/0x3a0 [ 29.849820] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 29.850507] ? __pfx_lock_acquire+0x10/0x10 [ 29.851023] ? __pfx_mmap_region+0x10/0x10 [ 29.851683] ? security_mmap_addr+0x7d/0xa0 [ 29.852416] ? get_unmapped_area+0x1f5/0x3f0 [ 29.853175] do_mmap+0x854/0xf00 [ 29.853775] vm_mmap_pgoff+0x1a6/0x3a0 [ 29.854455] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 29.855224] ksys_mmap_pgoff+0x3af/0x500 [ 29.855954] do_syscall_64+0x3f/0x90 [ 29.856615] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.857508] RIP: 0033:0x7f1b850cdd82 [ 29.858135] 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 [ 29.861059] RSP: 002b:00007ffc0e7eee18 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 29.862303] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f1b850cdd82 [ 29.863466] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f1b84507000 [ 29.864654] RBP: 00007f1b84507000 R08: 0000000000000009 R09: 0000000000001000 [ 29.865808] R10: 0000000000000812 R11: 0000000000000206 R12: 000055fe14f82d90 [ 29.866963] R13: 00007ffc0e7eee30 R14: 00007ffc0e7eee60 R15: 00007ffc0e7ef1c0 [ 29.868157] [ 29.868558] [ 29.868851] Allocated by task 213: [ 29.869436] kasan_save_stack+0x22/0x50 [ 29.870131] kasan_set_track+0x25/0x30 [ 29.870805] __kasan_slab_alloc+0x59/0x70 [ 29.871519] kmem_cache_alloc+0x16b/0x370 [ 29.872238] vm_area_dup+0x20/0x160 [ 29.872852] __split_vma+0x170/0x950 [ 29.873490] split_vma+0xc6/0x110 [ 29.874088] mprotect_fixup+0x8d2/0xb30 [ 29.874780] do_mprotect_pkey+0x87e/0xd40 [ 29.875491] __x64_sys_mprotect+0x78/0xc0 [ 29.876215] do_syscall_64+0x3f/0x90 [ 29.876868] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.877745] [ 29.878038] Freed by task 213: [ 29.878578] kasan_save_stack+0x22/0x50 [ 29.879271] kasan_set_track+0x25/0x30 [ 29.879892] kasan_save_free_info+0x2b/0x50 [ 29.880416] __kasan_slab_free+0x10a/0x190 [ 29.880941] kmem_cache_free+0x10d/0x4d0 [ 29.881461] rcu_core+0x8c8/0x2860 [ 29.881909] __do_softirq+0x1b7/0x7d4 [ 29.882378] [ 29.882592] Last potentially related work creation: [ 29.883184] kasan_save_stack+0x22/0x50 [ 29.883693] __kasan_record_aux_stack+0x8e/0xa0 [ 29.884266] __call_rcu_common.constprop.0+0x6a/0xb90 [ 29.884900] remove_vma+0x139/0x170 [ 29.885346] do_vmi_align_munmap+0xd4a/0x11f0 [ 29.885915] do_vmi_munmap+0x1f1/0x2b0 [ 29.886413] __vm_munmap+0x138/0x3a0 [ 29.886892] __x64_sys_munmap+0x59/0x80 [ 29.887383] do_syscall_64+0x3f/0x90 [ 29.887874] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.888521] [ 29.888739] Second to last potentially related work creation: [ 29.889431] kasan_save_stack+0x22/0x50 [ 29.889943] __kasan_record_aux_stack+0x8e/0xa0 [ 29.890514] __call_rcu_common.constprop.0+0x6a/0xb90 [ 29.891156] remove_vma+0x139/0x170 [ 29.891612] do_vmi_align_munmap+0xd4a/0x11f0 [ 29.892195] do_vmi_munmap+0x1f1/0x2b0 [ 29.892690] mmap_region+0x1f9/0x2660 [ 29.893170] do_mmap+0x854/0xf00 [ 29.893595] vm_mmap_pgoff+0x1a6/0x3a0 [ 29.894097] ksys_mmap_pgoff+0x3af/0x500 [ 29.894604] do_syscall_64+0x3f/0x90 [ 29.895090] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.895742] [ 29.895963] The buggy address belongs to the object at ffff88800f25f3a0 [ 29.895963] which belongs to the cache vm_area_struct of size 168 [ 29.897457] The buggy address is located 88 bytes inside of [ 29.897457] freed 168-byte region [ffff88800f25f3a0, ffff88800f25f448) [ 29.898881] [ 29.899101] The buggy address belongs to the physical page: [ 29.899797] page:0000000095fcedfd refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800f25f488 pfn:0xf25f [ 29.901031] memcg:ffff88800f281801 [ 29.901464] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 29.902171] page_type: 0xffffffff() [ 29.902623] raw: 0100000000000200 ffff88800879fc80 ffffea000026cd40 dead000000000009 [ 29.903535] raw: ffff88800f25f488 000000008011000f 00000001ffffffff ffff88800f281801 [ 29.904466] page dumped because: kasan: bad access detected [ 29.905143] [ 29.905362] Memory state around the buggy address: [ 29.905956] ffff88800f25f280: fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 [ 29.906824] ffff88800f25f300: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [ 29.907712] >ffff88800f25f380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 29.908577] ^ [ 29.909431] ffff88800f25f400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 29.910301] ffff88800f25f480: fc fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.911165] ================================================================== [ 29.912298] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 31.806814] BUG: Bad rss-counter state mm:00000000a808556a type:MM_FILEPAGES val:33 [ 31.808540] BUG: Bad rss-counter state mm:00000000a808556a type:MM_ANONPAGES val:22 [ 32.268454] BUG: Bad rss-counter state mm:000000001df8b9e1 type:MM_FILEPAGES val:33 [ 32.269555] BUG: Bad rss-counter state mm:000000001df8b9e1 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:3192' (ECDSA) to the list of known hosts. 2023/06/19 19:31:41 fuzzer started 2023/06/19 19:31:41 dialing manager at localhost:44161 2023/06/19 19:31:41 checking machine... 2023/06/19 19:31:41 checking revisions... [ 32.975712] kmemleak: Automatic memory scanning thread ended 2023/06/19 19:31:41 testing simple program... [ 33.018737] cgroup: Unknown subsys name 'net' [ 33.092099] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 19:31:35 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffff888008937028 RCX=ffffffff812e00e5 RDX=1ffff11001d53aec RSI=0000000000000000 RDI=ffff88800ea9d760 RBP=ffff88800ea9d720 RSP=ffff88806ce09e08 R8 =0000000000000001 R9 =ffffed100d9c13af R10=0000000000000003 R11=00000000000b6996 R12=0000000000000287 R13=ffffea0000224d80 R14=ffffffff813782a8 R15=ffff88800da7b100 RIP=ffffffff845135a1 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 00007f47220f7900 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=00005653f936f318 CR3=0000000016ffc000 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=ff0000000000ffff0000000000ff0000 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=ffffffff8450c50e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffff888008e27e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=0000000000000001 R12=ffffffff85d3bed0 R13=1ffff110011c4fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8450d49f 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=00007ffe00a6d958 CR3=000000000fc92000 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=2031343a31333a3931203931206e754a XMM01=6964206465766965636552203a5d3932 XMM02=6f63736964203a31313a383832383320 XMM03=7266207463656e6e6f63736964206465 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732030343a31333a3931203931 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000