syzkaller login: [ 31.699347] BUG: Bad rss-counter state mm:0000000088a9a107 type:MM_FILEPAGES val:33 [ 31.700554] BUG: Bad rss-counter state mm:0000000088a9a107 type:MM_ANONPAGES val:22 [ 31.792401] ================================================================== [ 31.793429] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.794495] Read of size 8 at addr ffff88800fbe3140 by task sshd/218 [ 31.795490] [ 31.795739] CPU: 0 PID: 218 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 31.796700] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.797792] Call Trace: [ 31.798153] [ 31.798505] dump_stack_lvl+0x91/0xf0 [ 31.799058] print_report+0xcc/0x620 [ 31.799604] ? __virt_addr_valid+0x102/0x340 [ 31.800222] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.800914] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.801628] kasan_report+0xbe/0xf0 [ 31.802185] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.802923] vma_interval_tree_remove+0xc75/0xec0 [ 31.803632] vma_prepare+0xc54/0x11a0 [ 31.804198] __split_vma+0x5af/0x950 [ 31.804754] ? __pfx___split_vma+0x10/0x10 [ 31.805381] ? find_held_lock+0x2c/0x110 [ 31.806004] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.806689] ? lock_is_held_type+0x9f/0x120 [ 31.807333] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.808056] ? mtree_range_walk+0x632/0x900 [ 31.808719] ? mas_walk+0x5c7/0x7c0 [ 31.809284] do_vmi_munmap+0x1f1/0x2b0 [ 31.809875] mmap_region+0x1f9/0x2660 [ 31.810467] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.811073] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.811807] ? __pfx_lock_acquire+0x10/0x10 [ 31.812333] ? __pfx_mmap_region+0x10/0x10 [ 31.812858] ? security_mmap_addr+0x7d/0xa0 [ 31.813391] ? get_unmapped_area+0x1f5/0x3f0 [ 31.813939] do_mmap+0x854/0xf00 [ 31.814379] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.814871] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.815429] ksys_mmap_pgoff+0x3af/0x500 [ 31.815930] do_syscall_64+0x3f/0x90 [ 31.816416] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.817060] RIP: 0033:0x7f87b1d99d82 [ 31.817521] 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 [ 31.819632] RSP: 002b:00007ffdf84ed0f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.820532] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f87b1d99d82 [ 31.821374] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f87b11d3000 [ 31.822212] RBP: 00007f87b11d3000 R08: 0000000000000009 R09: 0000000000001000 [ 31.823073] R10: 0000000000000812 R11: 0000000000000206 R12: 000055b63cd42ec0 [ 31.823921] R13: 00007ffdf84ed110 R14: 00007ffdf84ed140 R15: 00007ffdf84ed4a0 [ 31.824767] [ 31.825054] [ 31.825266] Allocated by task 211: [ 31.825705] kasan_save_stack+0x22/0x50 [ 31.826206] kasan_set_track+0x25/0x30 [ 31.826706] __kasan_slab_alloc+0x59/0x70 [ 31.827225] kmem_cache_alloc+0x16b/0x370 [ 31.827742] vm_area_dup+0x20/0x160 [ 31.828201] __split_vma+0x170/0x950 [ 31.828663] split_vma+0xc6/0x110 [ 31.829100] mprotect_fixup+0x8d2/0xb30 [ 31.829600] do_mprotect_pkey+0x87e/0xd40 [ 31.830119] __x64_sys_mprotect+0x78/0xc0 [ 31.830649] do_syscall_64+0x3f/0x90 [ 31.831128] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.831764] [ 31.831976] Freed by task 211: [ 31.832368] kasan_save_stack+0x22/0x50 [ 31.832868] kasan_set_track+0x25/0x30 [ 31.833359] kasan_save_free_info+0x2b/0x50 [ 31.833882] __kasan_slab_free+0x10a/0x190 [ 31.834420] kmem_cache_free+0x10d/0x4d0 [ 31.834926] rcu_core+0x8c8/0x2860 [ 31.835364] __do_softirq+0x1b7/0x7d4 [ 31.835847] [ 31.836059] Last potentially related work creation: [ 31.836637] kasan_save_stack+0x22/0x50 [ 31.837143] __kasan_record_aux_stack+0x8e/0xa0 [ 31.837711] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.838347] remove_vma+0x139/0x170 [ 31.838795] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.839355] do_vmi_munmap+0x1f1/0x2b0 [ 31.839848] __vm_munmap+0x138/0x3a0 [ 31.840314] __x64_sys_munmap+0x59/0x80 [ 31.840806] do_syscall_64+0x3f/0x90 [ 31.841284] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.841925] [ 31.842137] The buggy address belongs to the object at ffff88800fbe30e8 [ 31.842137] which belongs to the cache vm_area_struct of size 168 [ 31.843616] The buggy address is located 88 bytes inside of [ 31.843616] freed 168-byte region [ffff88800fbe30e8, ffff88800fbe3190) [ 31.844995] [ 31.845208] The buggy address belongs to the physical page: [ 31.845862] page:000000004f1fc307 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xfbe3 [ 31.846942] memcg:ffff88800c5d6a01 [ 31.847365] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.848003] page_type: 0xffffffff() [ 31.848453] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 31.849355] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800c5d6a01 [ 31.850248] page dumped because: kasan: bad access detected [ 31.850916] [ 31.851130] Memory state around the buggy address: [ 31.851707] ffff88800fbe3000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 31.852552] ffff88800fbe3080: 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb [ 31.853408] >ffff88800fbe3100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.854254] ^ [ 31.854914] ffff88800fbe3180: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 31.855767] ffff88800fbe3200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 31.856611] ================================================================== [ 31.857676] Disabling lock debugging due to kernel taint [ 33.644388] BUG: Bad rss-counter state mm:0000000098a4d20f type:MM_FILEPAGES val:33 [ 33.645071] BUG: Bad rss-counter state mm:0000000098a4d20f type:MM_ANONPAGES val:22 [ 34.088102] BUG: Bad rss-counter state mm:000000007bb7a192 type:MM_FILEPAGES val:33 [ 34.089617] BUG: Bad rss-counter state mm:000000007bb7a192 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:56009' (ECDSA) to the list of known hosts. 2023/06/20 19:37:06 fuzzer started 2023/06/20 19:37:07 dialing manager at localhost:36067 2023/06/20 19:37:07 checking machine... 2023/06/20 19:37:07 checking revisions... [ 34.829027] kmemleak: Automatic memory scanning thread ended 2023/06/20 19:37:07 testing simple program... [ 34.873532] cgroup: Unknown subsys name 'net' [ 34.924769] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 19:37:06 Registers: info registers vcpu 0 RAX=0000000000000001 RBX=ffffffff813ad470 RCX=0000000000000001 RDX=ffff8880094afa40 RSI=ffff8880094afa20 RDI=ffff88806ce09a98 RBP=ffff88806ce09b30 RSP=ffff88806ce09a90 R8 =0000000000000001 R9 =ffff88806ce09ad8 R10=0000000000038001 R11=00000000000b3efb R12=ffff88806ce09b60 R13=0000000000000000 R14=ffff8880167ad1c0 R15=ffff8880167a7080 RIP=ffffffff81130340 RFL=00000202 [-------] 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 00007f9a6f7a1900 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=00007f9a6f76b008 CR3=000000000d942000 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=652022746f6f72223d74636361207469 XMM02=3d6c616e696d72657420322e322e302e XMM03=3d656d616e74736f682022646873732f XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=652075253d64692073253d706f000000 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=00007fa2ea2e7710 CR3=00000000169a2000 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=2036303a37333a3931203032206e754a XMM01=73732878696e755f6d6170203a5d3732 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3732325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732036303a37333a3931203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000