syzkaller login: [ 38.871022] BUG: Bad rss-counter state mm:000000007ead5b93 type:MM_FILEPAGES val:33 [ 38.871709] BUG: Bad rss-counter state mm:000000007ead5b93 type:MM_ANONPAGES val:22 [ 38.976149] ================================================================== [ 38.977300] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 38.978555] Read of size 8 at addr ffff88800eb094e0 by task sshd/220 [ 38.979335] [ 38.979488] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 38.980079] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 38.980747] Call Trace: [ 38.980965] [ 38.981161] dump_stack_lvl+0x91/0xf0 [ 38.981507] print_report+0xcc/0x620 [ 38.981839] ? __virt_addr_valid+0x102/0x340 [ 38.982221] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.982648] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.983070] kasan_report+0xbe/0xf0 [ 38.983425] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.983855] vma_interval_tree_remove+0xc75/0xec0 [ 38.984276] vma_prepare+0xc54/0x11a0 [ 38.984603] __split_vma+0x5af/0x950 [ 38.984932] ? __pfx___split_vma+0x10/0x10 [ 38.985293] ? find_held_lock+0x2c/0x110 [ 38.985650] do_vmi_align_munmap+0x2ba/0x11f0 [ 38.986033] ? lock_is_held_type+0x9f/0x120 [ 38.986409] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 38.986840] ? mtree_range_walk+0x632/0x900 [ 38.987254] ? mas_walk+0x5c7/0x7c0 [ 38.987589] do_vmi_munmap+0x1f1/0x2b0 [ 38.987918] mmap_region+0x1f9/0x2660 [ 38.988264] ? vm_mmap_pgoff+0x15c/0x3a0 [ 38.988619] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 38.989117] ? __pfx_lock_acquire+0x10/0x10 [ 38.989479] ? __pfx_mmap_region+0x10/0x10 [ 38.989852] ? security_mmap_addr+0x7d/0xa0 [ 38.990211] ? get_unmapped_area+0x1f5/0x3f0 [ 38.990591] do_mmap+0x854/0xf00 [ 38.990894] vm_mmap_pgoff+0x1a6/0x3a0 [ 38.991262] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 38.991650] ksys_mmap_pgoff+0x3af/0x500 [ 38.992001] do_syscall_64+0x3f/0x90 [ 38.992337] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.992787] RIP: 0033:0x7fbcd9567d82 [ 38.993105] 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 [ 38.994575] RSP: 002b:00007ffe7355b0f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 38.995240] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fbcd9567d82 [ 38.995830] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fbcd89a1000 [ 38.996421] RBP: 00007fbcd89a1000 R08: 0000000000000009 R09: 0000000000001000 [ 38.997013] R10: 0000000000000812 R11: 0000000000000206 R12: 000055aa20fd0ec0 [ 38.997596] R13: 00007ffe7355b110 R14: 00007ffe7355b140 R15: 00007ffe7355b4a0 [ 38.998187] [ 38.998386] [ 38.998534] Allocated by task 213: [ 38.998836] kasan_save_stack+0x22/0x50 [ 38.999208] kasan_set_track+0x25/0x30 [ 38.999546] __kasan_slab_alloc+0x59/0x70 [ 38.999911] kmem_cache_alloc+0x16b/0x370 [ 39.000267] vm_area_dup+0x20/0x160 [ 39.000592] __split_vma+0x170/0x950 [ 39.000911] split_vma+0xc6/0x110 [ 39.001219] mprotect_fixup+0x8d2/0xb30 [ 39.001567] do_mprotect_pkey+0x87e/0xd40 [ 39.001925] __x64_sys_mprotect+0x78/0xc0 [ 39.002285] do_syscall_64+0x3f/0x90 [ 39.002607] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 39.003050] [ 39.003227] Freed by task 19: [ 39.003492] kasan_save_stack+0x22/0x50 [ 39.003839] kasan_set_track+0x25/0x30 [ 39.004189] kasan_save_free_info+0x2b/0x50 [ 39.004555] __kasan_slab_free+0x10a/0x190 [ 39.004929] kmem_cache_free+0x10d/0x4d0 [ 39.005282] rcu_core+0x8c8/0x2860 [ 39.005592] __do_softirq+0x1b7/0x7d4 [ 39.005925] [ 39.006073] Last potentially related work creation: [ 39.006492] kasan_save_stack+0x22/0x50 [ 39.006837] __kasan_record_aux_stack+0x8e/0xa0 [ 39.007263] __call_rcu_common.constprop.0+0x6a/0xb90 [ 39.007704] remove_vma+0x139/0x170 [ 39.008016] do_vmi_align_munmap+0xd4a/0x11f0 [ 39.008401] do_vmi_munmap+0x1f1/0x2b0 [ 39.008736] __vm_munmap+0x138/0x3a0 [ 39.009060] __x64_sys_munmap+0x59/0x80 [ 39.009400] do_syscall_64+0x3f/0x90 [ 39.009729] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 39.010174] [ 39.010323] Second to last potentially related work creation: [ 39.010815] kasan_save_stack+0x22/0x50 [ 39.011169] __kasan_record_aux_stack+0x8e/0xa0 [ 39.011561] __call_rcu_common.constprop.0+0x6a/0xb90 [ 39.011995] remove_vma+0x139/0x170 [ 39.012302] do_vmi_align_munmap+0xd4a/0x11f0 [ 39.012686] do_vmi_munmap+0x1f1/0x2b0 [ 39.013028] __vm_munmap+0x138/0x3a0 [ 39.013351] elf_map+0x26f/0x310 [ 39.013664] load_elf_binary+0x3417/0x5030 [ 39.014032] bprm_execve+0x803/0x1940 [ 39.014353] do_execveat_common+0x734/0x8e0 [ 39.014723] __x64_sys_execve+0x93/0xc0 [ 39.015065] do_syscall_64+0x3f/0x90 [ 39.015401] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 39.015848] [ 39.016001] The buggy address belongs to the object at ffff88800eb09488 [ 39.016001] which belongs to the cache vm_area_struct of size 168 [ 39.017021] The buggy address is located 88 bytes inside of [ 39.017021] freed 168-byte region [ffff88800eb09488, ffff88800eb09530) [ 39.018006] [ 39.018154] The buggy address belongs to the physical page: [ 39.018621] page:0000000003d9861f refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xeb09 [ 39.019382] memcg:ffff88800e1d7f01 [ 39.019668] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 39.020142] page_type: 0xffffffff() [ 39.020447] raw: 0100000000000200 ffff8880087a0c80 ffffea000038bac0 dead000000000005 [ 39.021067] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e1d7f01 [ 39.021687] page dumped because: kasan: bad access detected [ 39.022138] [ 39.022283] Memory state around the buggy address: [ 39.022673] ffff88800eb09380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 39.023280] ffff88800eb09400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 39.023868] >ffff88800eb09480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 39.024472] ^ [ 39.024999] ffff88800eb09500: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb [ 39.025606] ffff88800eb09580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 39.026199] ================================================================== [ 39.026927] Disabling lock debugging due to kernel taint [ 41.403768] BUG: Bad rss-counter state mm:00000000079fdbd0 type:MM_FILEPAGES val:33 [ 41.404752] BUG: Bad rss-counter state mm:00000000079fdbd0 type:MM_ANONPAGES val:22 [ 41.867609] BUG: Bad rss-counter state mm:000000007fc7e407 type:MM_FILEPAGES val:33 [ 41.868548] BUG: Bad rss-counter state mm:000000007fc7e407 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:11487' (ECDSA) to the list of known hosts. 2023/06/21 05:49:58 fuzzer started 2023/06/21 05:49:58 dialing manager at localhost:36067 2023/06/21 05:49:58 checking machine... 2023/06/21 05:49:58 checking revisions... [ 42.617935] kmemleak: Automatic memory scanning thread ended 2023/06/21 05:49:58 testing simple program... [ 42.669042] cgroup: Unknown subsys name 'net' [ 42.709368] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 05:49:58 Registers: info registers vcpu 0 RAX=fffffbfff0ba7a6a RBX=fffffbfff0ba7a6b RCX=ffffffff812d8f13 RDX=fffffbfff0ba7a6b RSI=0000000000000008 RDI=ffffffff85d3d350 RBP=fffffbfff0ba7a6a RSP=ffff88800c58f740 R8 =0000000000000000 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=00000000000b6a61 R12=0000000000000000 R13=0000000000000000 R14=ffffffff856c1fc0 R15=0000000000000000 RIP=ffffffff8180f186 RFL=00000282 [--S----] 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 00007ffb2ce6f900 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=00007ffffbe1c248 CR3=000000000c564000 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=ffffffffffff00000000000000000000 XMM02=ffffffffffff00000000000000000000 XMM03=00000000000000000000000000000000 XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000 XMM06=00000000000000000000000000000000 XMM07=00000000000000000000000000000000 XMM08=00000000000073707574726174732064 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffffffff81106270 RBX=0000000000000000 RCX=0000000000000019 RDX=1ffff1100d9e5029 RSI=ffff88806cf28140 RDI=0000000000052ba7 RBP=ffff88806cf28140 RSP=ffff88806cf09ed8 R8 =0000000000000007 R9 =0000000000000000 R10=00000000000eccf9 R11=0000000000000001 R12=0000000000052ba7 R13=0000000000000000 R14=0000000000000000 R15=ffff88806cf2b940 RIP=ffffffff845383e6 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=00007fe12da27020 CR3=000000001c9e0000 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=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