syzkaller login: [ 38.709365] BUG: Bad rss-counter state mm:0000000064fe2189 type:MM_FILEPAGES val:33 [ 38.711013] BUG: Bad rss-counter state mm:0000000064fe2189 type:MM_ANONPAGES val:22 [ 38.879980] ================================================================== [ 38.881089] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 38.882231] Read of size 8 at addr ffff888016a086b0 by task sshd/226 [ 38.883278] [ 38.883537] CPU: 0 PID: 226 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 38.884619] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 38.885862] Call Trace: [ 38.886253] [ 38.886600] dump_stack_lvl+0x91/0xf0 [ 38.887192] print_report+0xcc/0x620 [ 38.887782] ? __virt_addr_valid+0x102/0x340 [ 38.888462] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.889222] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.889968] kasan_report+0xbe/0xf0 [ 38.890542] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.891297] vma_interval_tree_remove+0xc75/0xec0 [ 38.892044] vma_prepare+0xc54/0x11a0 [ 38.892635] __split_vma+0x5af/0x950 [ 38.893217] ? __pfx___split_vma+0x10/0x10 [ 38.893859] ? find_held_lock+0x2c/0x110 [ 38.894500] do_vmi_align_munmap+0x2ba/0x11f0 [ 38.895192] ? lock_is_held_type+0x9f/0x120 [ 38.895845] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 38.896608] ? mtree_range_walk+0x632/0x900 [ 38.897270] ? mas_walk+0x5c7/0x7c0 [ 38.897837] do_vmi_munmap+0x1f1/0x2b0 [ 38.898436] mmap_region+0x1f9/0x2660 [ 38.899035] ? vm_mmap_pgoff+0x15c/0x3a0 [ 38.899581] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 38.900354] ? __pfx_lock_acquire+0x10/0x10 [ 38.900912] ? __pfx_mmap_region+0x10/0x10 [ 38.901468] ? security_mmap_addr+0x7d/0xa0 [ 38.902024] ? get_unmapped_area+0x1f5/0x3f0 [ 38.902613] do_mmap+0x854/0xf00 [ 38.903062] vm_mmap_pgoff+0x1a6/0x3a0 [ 38.903571] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 38.904166] ksys_mmap_pgoff+0x3af/0x500 [ 38.904676] do_syscall_64+0x3f/0x90 [ 38.905156] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.905809] RIP: 0033:0x7fba62e3ad82 [ 38.906272] 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 [ 38.908446] RSP: 002b:00007ffcca76c388 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 38.909355] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fba62e3ad82 [ 38.910209] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fba62274000 [ 38.911070] RBP: 00007fba62274000 R08: 0000000000000009 R09: 0000000000001000 [ 38.911915] R10: 0000000000000812 R11: 0000000000000206 R12: 000055a4d6298b20 [ 38.912789] R13: 00007ffcca76c3a0 R14: 00007ffcca76c3d0 R15: 00007ffcca76c730 [ 38.913681] [ 38.913991] [ 38.914219] Allocated by task 219: [ 38.914675] kasan_save_stack+0x22/0x50 [ 38.915198] kasan_set_track+0x25/0x30 [ 38.915731] __kasan_slab_alloc+0x59/0x70 [ 38.916300] kmem_cache_alloc+0x16b/0x370 [ 38.916855] vm_area_dup+0x20/0x160 [ 38.917342] __split_vma+0x170/0x950 [ 38.917845] split_vma+0xc6/0x110 [ 38.918320] mprotect_fixup+0x8d2/0xb30 [ 38.918855] do_mprotect_pkey+0x87e/0xd40 [ 38.919431] __x64_sys_mprotect+0x78/0xc0 [ 38.920012] do_syscall_64+0x3f/0x90 [ 38.920512] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.921220] [ 38.921457] Freed by task 219: [ 38.921877] kasan_save_stack+0x22/0x50 [ 38.922408] kasan_set_track+0x25/0x30 [ 38.922956] kasan_save_free_info+0x2b/0x50 [ 38.923524] __kasan_slab_free+0x10a/0x190 [ 38.924097] kmem_cache_free+0x10d/0x4d0 [ 38.924638] rcu_core+0x8c8/0x2860 [ 38.925114] __do_softirq+0x1b7/0x7d4 [ 38.925624] [ 38.925864] Last potentially related work creation: [ 38.926482] kasan_save_stack+0x22/0x50 [ 38.927014] __kasan_record_aux_stack+0x8e/0xa0 [ 38.927625] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.928337] remove_vma+0x139/0x170 [ 38.928823] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.929422] do_vmi_munmap+0x1f1/0x2b0 [ 38.929945] __vm_munmap+0x138/0x3a0 [ 38.930452] __x64_sys_munmap+0x59/0x80 [ 38.930978] do_syscall_64+0x3f/0x90 [ 38.931480] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.932184] [ 38.932421] The buggy address belongs to the object at ffff888016a08658 [ 38.932421] which belongs to the cache vm_area_struct of size 168 [ 38.934031] The buggy address is located 88 bytes inside of [ 38.934031] freed 168-byte region [ffff888016a08658, ffff888016a08700) [ 38.935546] [ 38.935779] The buggy address belongs to the physical page: [ 38.936522] page:00000000653af141 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x16a08 [ 38.937675] memcg:ffff88800d301901 [ 38.938122] flags: 0x100000000000200(slab|node=0|zone=1) [ 38.938808] page_type: 0xffffffff() [ 38.939306] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 38.940312] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d301901 [ 38.941278] page dumped because: kasan: bad access detected [ 38.941994] [ 38.942231] Memory state around the buggy address: [ 38.942864] ffff888016a08580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 38.943788] ffff888016a08600: 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb [ 38.944710] >ffff888016a08680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.945642] ^ [ 38.946266] ffff888016a08700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 38.947193] ffff888016a08780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 38.948112] ================================================================== [ 38.949272] Disabling lock debugging due to kernel taint [ 40.923376] BUG: Bad rss-counter state mm:000000005fc12453 type:MM_FILEPAGES val:33 [ 40.925206] BUG: Bad rss-counter state mm:000000005fc12453 type:MM_ANONPAGES val:22 [ 41.469747] BUG: Bad rss-counter state mm:00000000cb71e3a0 type:MM_FILEPAGES val:33 [ 41.470970] BUG: Bad rss-counter state mm:00000000cb71e3a0 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:39951' (ECDSA) to the list of known hosts. 2023/06/20 16:51:59 fuzzer started 2023/06/20 16:51:59 dialing manager at localhost:36067 2023/06/20 16:51:59 checking machine... 2023/06/20 16:51:59 checking revisions... [ 42.250709] kmemleak: Automatic memory scanning thread ended 2023/06/20 16:51:59 testing simple program... [ 42.300630] cgroup: Unknown subsys name 'net' [ 42.355599] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 16:51:59 Registers: info registers vcpu 0 RAX=0000000005970111 RBX=ffff88800da20f30 RCX=ffff88800da20000 RDX=0000000000000080 RSI=ffff88800da20e40 RDI=ffff88800844f780 RBP=0000000000000000 RSP=ffff888015d9f6e0 R8 =0000000000000130 R9 =0000000000000000 R10=0000000000000008 R11=00000000000b6a61 R12=ffff88800844f780 R13=ffffea00005bbe80 R14=ffffffff844ae5be R15=0000000000000001 RIP=ffffffff8180eff0 RFL=00000286 [--S--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 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=00007f490934ace0 CR3=000000000e1da000 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=293c297b82a97fa058429f5d3c799c26 XMM02=000000000011a880eff9b2d0a8fce9cb XMM03=000000000011a9502c67c8bc2e329bc3 XMM04=48f453c7e5de1f2c00000000000ae988 XMM05=c742a8e2ac3c37490000000000131f50 XMM06=13e856d8d71426c80000000000130c80 XMM07=e042d86d42eb936e0000000000121510 XMM08=9414b52199548e94000000000011a950 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=1ffff11001606e13 RBX=ffff88800b037068 RCX=ffffffff812e0135 RDX=0000000000000000 RSI=0000000000000000 RDI=ffff88800b037098 RBP=ffff88801088b700 RSP=ffff888008e37cb8 R8 =0000000000000001 R9 =ffffed10011c6f8b R10=0000000000000003 R11=0000000000000128 R12=dffffc0000000000 R13=ffff88800fa6bb80 R14=ffffffff813782f8 R15=ffff88800fa6bb80 RIP=ffffffff818464e2 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 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=00007f9ce9577618 CR3=0000000015d2e000 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=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