syzkaller login: [ 38.812872] BUG: Bad rss-counter state mm:00000000129b72ad type:MM_FILEPAGES val:33 [ 38.814081] BUG: Bad rss-counter state mm:00000000129b72ad type:MM_ANONPAGES val:22 [ 38.853945] ================================================================== [ 38.854996] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 38.856063] Read of size 8 at addr ffff88800e0494e0 by task sshd/219 [ 38.856944] [ 38.857165] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 38.858117] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 38.859284] Call Trace: [ 38.859605] [ 38.859892] dump_stack_lvl+0x91/0xf0 [ 38.860459] print_report+0xcc/0x620 [ 38.861053] ? __virt_addr_valid+0x102/0x340 [ 38.861628] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.862251] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.862867] kasan_report+0xbe/0xf0 [ 38.863342] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.863962] vma_interval_tree_remove+0xc75/0xec0 [ 38.864570] vma_prepare+0xc54/0x11a0 [ 38.865048] __split_vma+0x5af/0x950 [ 38.865553] ? __pfx___split_vma+0x10/0x10 [ 38.866105] ? find_held_lock+0x2c/0x110 [ 38.866627] do_vmi_align_munmap+0x2ba/0x11f0 [ 38.867187] ? lock_is_held_type+0x9f/0x120 [ 38.867726] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 38.868333] ? mtree_range_walk+0x632/0x900 [ 38.868888] ? mas_walk+0x5c7/0x7c0 [ 38.869361] do_vmi_munmap+0x1f1/0x2b0 [ 38.869866] mmap_region+0x1f9/0x2660 [ 38.870348] ? vm_mmap_pgoff+0x15c/0x3a0 [ 38.870867] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 38.871580] ? __pfx_lock_acquire+0x10/0x10 [ 38.872111] ? __pfx_mmap_region+0x10/0x10 [ 38.872638] ? security_mmap_addr+0x7d/0xa0 [ 38.873172] ? get_unmapped_area+0x1f5/0x3f0 [ 38.873732] do_mmap+0x854/0xf00 [ 38.874171] vm_mmap_pgoff+0x1a6/0x3a0 [ 38.874666] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 38.875227] ksys_mmap_pgoff+0x3af/0x500 [ 38.875736] do_syscall_64+0x3f/0x90 [ 38.876216] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.876870] RIP: 0033:0x7f76bb30cd82 [ 38.877323] 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 [ 38.879454] RSP: 002b:00007ffc465cd3c8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 38.880350] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f76bb30cd82 [ 38.881201] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f76ba746000 [ 38.882070] RBP: 00007f76ba746000 R08: 0000000000000009 R09: 0000000000001000 [ 38.882927] R10: 0000000000000812 R11: 0000000000000206 R12: 0000555a76a25d90 [ 38.883766] R13: 00007ffc465cd3e0 R14: 00007ffc465cd410 R15: 00007ffc465cd770 [ 38.884626] [ 38.884920] [ 38.885133] Allocated by task 212: [ 38.885570] kasan_save_stack+0x22/0x50 [ 38.886072] kasan_set_track+0x25/0x30 [ 38.886559] __kasan_slab_alloc+0x59/0x70 [ 38.887079] kmem_cache_alloc+0x16b/0x370 [ 38.887600] vm_area_dup+0x20/0x160 [ 38.888056] __split_vma+0x170/0x950 [ 38.888525] split_vma+0xc6/0x110 [ 38.888958] mprotect_fixup+0x8d2/0xb30 [ 38.889470] do_mprotect_pkey+0x87e/0xd40 [ 38.889988] __x64_sys_mprotect+0x78/0xc0 [ 38.890501] do_syscall_64+0x3f/0x90 [ 38.890978] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.891629] [ 38.891844] Freed by task 13: [ 38.892222] kasan_save_stack+0x22/0x50 [ 38.892717] kasan_set_track+0x25/0x30 [ 38.893208] kasan_save_free_info+0x2b/0x50 [ 38.893753] __kasan_slab_free+0x10a/0x190 [ 38.894287] kmem_cache_free+0x10d/0x4d0 [ 38.894787] rcu_core+0x8c8/0x2860 [ 38.895234] __do_softirq+0x1b7/0x7d4 [ 38.895708] [ 38.895921] Last potentially related work creation: [ 38.896500] kasan_save_stack+0x22/0x50 [ 38.896996] __kasan_record_aux_stack+0x8e/0xa0 [ 38.897569] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.898262] remove_vma+0x139/0x170 [ 38.898709] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.899265] do_vmi_munmap+0x1f1/0x2b0 [ 38.899747] __vm_munmap+0x138/0x3a0 [ 38.900268] __x64_sys_munmap+0x59/0x80 [ 38.900768] do_syscall_64+0x3f/0x90 [ 38.901238] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.901898] [ 38.902115] Second to last potentially related work creation: [ 38.902793] kasan_save_stack+0x22/0x50 [ 38.903301] __kasan_record_aux_stack+0x8e/0xa0 [ 38.903872] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.904518] remove_vma+0x139/0x170 [ 38.904965] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.905531] do_vmi_munmap+0x1f1/0x2b0 [ 38.906019] __vm_munmap+0x138/0x3a0 [ 38.906486] elf_map+0x26f/0x310 [ 38.906932] load_elf_binary+0x3417/0x5030 [ 38.907472] bprm_execve+0x803/0x1940 [ 38.907934] do_execveat_common+0x734/0x8e0 [ 38.908452] __x64_sys_execve+0x93/0xc0 [ 38.908937] do_syscall_64+0x3f/0x90 [ 38.909408] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.910067] [ 38.910280] The buggy address belongs to the object at ffff88800e049488 [ 38.910280] which belongs to the cache vm_area_struct of size 168 [ 38.911752] The buggy address is located 88 bytes inside of [ 38.911752] freed 168-byte region [ffff88800e049488, ffff88800e049530) [ 38.913171] [ 38.913388] The buggy address belongs to the physical page: [ 38.914062] page:000000007a86f3f4 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe049 [ 38.915157] memcg:ffff88800dfe2601 [ 38.915583] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 38.916284] page_type: 0xffffffff() [ 38.916735] raw: 0100000000000200 ffff8880087a0c80 ffffea000037cd40 dead000000000003 [ 38.917657] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800dfe2601 [ 38.918566] page dumped because: kasan: bad access detected [ 38.919224] [ 38.919439] Memory state around the buggy address: [ 38.920018] ffff88800e049380: fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 [ 38.920869] ffff88800e049400: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc [ 38.921741] >ffff88800e049480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.922621] ^ [ 38.923405] ffff88800e049500: fb fb fb fb fb fb fc fc fc fc fc fc fc fc 00 00 [ 38.924293] ffff88800e049580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 38.925179] ================================================================== [ 38.926395] Disabling lock debugging due to kernel taint [ 41.437849] BUG: Bad rss-counter state mm:0000000086bc7eaa type:MM_FILEPAGES val:33 [ 41.438937] BUG: Bad rss-counter state mm:0000000086bc7eaa type:MM_ANONPAGES val:22 [ 41.826821] BUG: Bad rss-counter state mm:00000000c60e0a5c type:MM_FILEPAGES val:33 [ 41.827975] BUG: Bad rss-counter state mm:00000000c60e0a5c type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:21063' (ECDSA) to the list of known hosts. 2023/06/21 02:53:13 fuzzer started 2023/06/21 02:53:13 dialing manager at localhost:36067 2023/06/21 02:53:13 checking machine... 2023/06/21 02:53:13 checking revisions... [ 42.600359] kmemleak: Automatic memory scanning thread ended 2023/06/21 02:53:13 testing simple program... [ 42.642541] cgroup: Unknown subsys name 'net' [ 42.705735] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 02:53:13 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=1ffff11001dcefac RCX=ffffffff81718344 RDX=ffff888016b9b680 RSI=0000000000000000 RDI=0000000000000007 RBP=800000001b36d065 RSP=ffff88800ee77d38 R8 =0000000000000007 R9 =0000000000000000 R10=800000001b36d005 R11=0000000000000000 R12=800000001b36d005 R13=ffffffff852c61f8 R14=000000001c9ac007 R15=000000000fc95067 RIP=ffffffff814c02c5 RFL=00000293 [--S-A-C] 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 00007f86f5efd900 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=00007ffcac31f000 CR3=000000000ed1e000 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=00000000000000000000000000000000 XMM02=1d48e9435643e4f3ce3198a13d858991 XMM03=44f03eb324266612db2f7114fffb9bd5 XMM04=aa566093f9b84404d6c5f8c4836a25b0 XMM05=00000000000000000000000000000000 XMM06=44563e9324264404d62f7114836a25b0 XMM07=672065736f6c635f6e6f69737365733a XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000010b8d RBX=0000000000000002 RCX=ffffffff813ad71f RDX=0000000000010b9e RSI=0000000000003ad7 RDI=00000000000322da RBP=ffff88806cf09af0 RSP=ffff88806cf09a28 R8 =ffffffff860d8256 R9 =ffff88806cf09ad8 R10=0000000000038001 R11=0000000000010b8d R12=ffff88806cf09af8 R13=ffff88806cf09ae0 R14=ffff88806cf09ad9 R15=ffff88806cf09a98 RIP=ffffffff81130859 RFL=00000293 [--S-A-C] 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=00007fd7665e17e0 CR3=000000000980c000 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=3d6708ece8b6c1958340f179f7de2a34 XMM02=000000000011b0b0eff9b2d0a8fce9cb XMM03=000000000011b1802c67c8bc2e329bc3 XMM04=9e2a3c3adf91661100000000000ae988 XMM05=dfcdbad4f1609c370000000000132d90 XMM06=dbfc6bf36f719b520000000000131f68 XMM07=e042d86d42eb936e0000000000121d40 XMM08=084f610306862aad000000000011b180 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000