syzkaller login: [ 38.672757] BUG: Bad rss-counter state mm:00000000a78084cf type:MM_FILEPAGES val:33 [ 38.674580] BUG: Bad rss-counter state mm:00000000a78084cf type:MM_ANONPAGES val:22 [ 38.805593] ================================================================== [ 38.806617] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 38.807646] Read of size 8 at addr ffff88800d754058 by task sshd/219 [ 38.808609] [ 38.808856] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 38.809790] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 38.810899] Call Trace: [ 38.811245] [ 38.811550] dump_stack_lvl+0x91/0xf0 [ 38.812097] print_report+0xcc/0x620 [ 38.812617] ? __virt_addr_valid+0x102/0x340 [ 38.813254] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.813957] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.814620] kasan_report+0xbe/0xf0 [ 38.815138] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.815797] vma_interval_tree_remove+0xc75/0xec0 [ 38.816486] vma_prepare+0xc54/0x11a0 [ 38.817042] __split_vma+0x5af/0x950 [ 38.817552] ? __pfx___split_vma+0x10/0x10 [ 38.818158] ? find_held_lock+0x2c/0x110 [ 38.818719] do_vmi_align_munmap+0x2ba/0x11f0 [ 38.819349] ? lock_is_held_type+0x9f/0x120 [ 38.819945] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 38.820602] ? mtree_range_walk+0x632/0x900 [ 38.821268] ? mas_walk+0x5c7/0x7c0 [ 38.821933] do_vmi_munmap+0x1f1/0x2b0 [ 38.822472] mmap_region+0x1f9/0x2660 [ 38.823020] ? vm_mmap_pgoff+0x15c/0x3a0 [ 38.823583] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 38.824386] ? __pfx_lock_acquire+0x10/0x10 [ 38.824991] ? __pfx_mmap_region+0x10/0x10 [ 38.825564] ? security_mmap_addr+0x7d/0xa0 [ 38.826190] ? get_unmapped_area+0x1f5/0x3f0 [ 38.826783] do_mmap+0x854/0xf00 [ 38.827299] vm_mmap_pgoff+0x1a6/0x3a0 [ 38.827830] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 38.828449] ksys_mmap_pgoff+0x3af/0x500 [ 38.828994] do_syscall_64+0x3f/0x90 [ 38.829514] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.830231] RIP: 0033:0x7f2eb555fd82 [ 38.830723] 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 [ 38.833050] RSP: 002b:00007fff1a7c47c8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 38.834027] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f2eb555fd82 [ 38.834939] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f2eb4999000 [ 38.835889] RBP: 00007f2eb4999000 R08: 0000000000000009 R09: 0000000000001000 [ 38.836806] R10: 0000000000000812 R11: 0000000000000206 R12: 000055cb56e54b20 [ 38.837714] R13: 00007fff1a7c47e0 R14: 00007fff1a7c4810 R15: 00007fff1a7c4b70 [ 38.838674] [ 38.838992] [ 38.839224] Allocated by task 212: [ 38.839684] kasan_save_stack+0x22/0x50 [ 38.840223] kasan_set_track+0x25/0x30 [ 38.840762] __kasan_slab_alloc+0x59/0x70 [ 38.841334] kmem_cache_alloc+0x16b/0x370 [ 38.841903] vm_area_dup+0x20/0x160 [ 38.842394] __split_vma+0x170/0x950 [ 38.842895] split_vma+0xc6/0x110 [ 38.843372] mprotect_fixup+0x8d2/0xb30 [ 38.843915] do_mprotect_pkey+0x87e/0xd40 [ 38.844476] __x64_sys_mprotect+0x78/0xc0 [ 38.845038] do_syscall_64+0x3f/0x90 [ 38.845546] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.846258] [ 38.846489] Freed by task 203: [ 38.846923] kasan_save_stack+0x22/0x50 [ 38.847471] kasan_set_track+0x25/0x30 [ 38.847994] kasan_save_free_info+0x2b/0x50 [ 38.848555] __kasan_slab_free+0x10a/0x190 [ 38.849118] kmem_cache_free+0x10d/0x4d0 [ 38.849738] rcu_core+0x8c8/0x2860 [ 38.850228] __do_softirq+0x1b7/0x7d4 [ 38.850748] [ 38.850978] Last potentially related work creation: [ 38.851606] kasan_save_stack+0x22/0x50 [ 38.852150] __kasan_record_aux_stack+0x8e/0xa0 [ 38.852760] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.853452] remove_vma+0x139/0x170 [ 38.853948] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.854546] do_vmi_munmap+0x1f1/0x2b0 [ 38.855075] __vm_munmap+0x138/0x3a0 [ 38.855577] __x64_sys_munmap+0x59/0x80 [ 38.856112] do_syscall_64+0x3f/0x90 [ 38.856625] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.857319] [ 38.857552] Second to last potentially related work creation: [ 38.858303] kasan_save_stack+0x22/0x50 [ 38.858840] __kasan_record_aux_stack+0x8e/0xa0 [ 38.859455] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.860142] remove_vma+0x139/0x170 [ 38.860627] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.861255] do_vmi_munmap+0x1f1/0x2b0 [ 38.861781] mmap_region+0x1f9/0x2660 [ 38.862311] do_mmap+0x854/0xf00 [ 38.862770] vm_mmap_pgoff+0x1a6/0x3a0 [ 38.863292] ksys_mmap_pgoff+0x3af/0x500 [ 38.863829] do_syscall_64+0x3f/0x90 [ 38.864344] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.865033] [ 38.865264] The buggy address belongs to the object at ffff88800d754000 [ 38.865264] which belongs to the cache vm_area_struct of size 168 [ 38.866850] The buggy address is located 88 bytes inside of [ 38.866850] freed 168-byte region [ffff88800d754000, ffff88800d7540a8) [ 38.868370] [ 38.868600] The buggy address belongs to the physical page: [ 38.869310] page:000000002a0facfe refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd754 [ 38.870492] memcg:ffff88800da93b01 [ 38.870956] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 38.871714] page_type: 0xffffffff() [ 38.872202] raw: 0100000000000200 ffff8880087a0c80 ffffea000038f100 dead000000000003 [ 38.873195] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800da93b01 [ 38.874219] page dumped because: kasan: bad access detected [ 38.874927] [ 38.875159] Memory state around the buggy address: [ 38.875782] ffff88800d753f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 38.876702] ffff88800d753f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 38.877620] >ffff88800d754000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.878555] ^ [ 38.879392] ffff88800d754080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 38.880369] ffff88800d754100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.881332] ================================================================== [ 38.882542] Disabling lock debugging due to kernel taint [ 41.380662] BUG: Bad rss-counter state mm:00000000868585f2 type:MM_FILEPAGES val:33 [ 41.382401] BUG: Bad rss-counter state mm:00000000868585f2 type:MM_ANONPAGES val:22 [ 41.891932] BUG: Bad rss-counter state mm:00000000f70fd225 type:MM_FILEPAGES val:33 [ 41.893077] BUG: Bad rss-counter state mm:00000000f70fd225 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:16539' (ECDSA) to the list of known hosts. 2023/06/20 11:28:23 fuzzer started 2023/06/20 11:28:23 dialing manager at localhost:36067 2023/06/20 11:28:23 checking machine... 2023/06/20 11:28:23 checking revisions... [ 42.667999] kmemleak: Automatic memory scanning thread ended 2023/06/20 11:28:23 testing simple program... [ 42.716481] cgroup: Unknown subsys name 'net' [ 42.778681] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 11:28:22 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=ffffffff813ad470 RCX=0000000000000001 RDX=1ffff110011b3f3a RSI=ffffffff84537da7 RDI=ffff888008d9fa40 RBP=ffff888008d9fa10 RSP=ffff888008d9f968 R8 =0000000000000001 R9 =ffff888008d9f9b8 R10=0000000000038001 R11=000000000000fdcc R12=ffff888008d9fa40 R13=0000000000000000 R14=ffff888008d90000 R15=ffff88800da72540 RIP=ffffffff813ad47f 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 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=00007fb12e871000 CR3=000000000caf8000 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=756f6a2f646d65747379732f6e75722f XMM01=00676f6c7379732f6c616e72756f6a2f XMM02=756f6a2f646d65747379732f6e75722f XMM03=006c616e72756f6a2f646d6574737973 XMM04=5ab5d73d7123da0e00000000000ae988 XMM05=3ba318d53152f0440000000000133ea0 XMM06=806171799158d9670000000000132920 XMM07=fb795ef6d65770560000000000121bc8 XMM08=4f5453444600273d67736d000d0a0920 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=1ffffffff0bf82ad RBX=ffffffff85fc1568 RCX=ffffffff83866857 RDX=0000000000000000 RSI=ffffffff863dde7e RDI=ffffffff85fc1568 RBP=ffffffff85fc1568 RSP=ffff8880101e71a0 R8 =ffffffff863dde7e R9 =ffff8880101e7298 R10=0000000000038001 R11=0000000000091ae9 R12=ffffffff85fc1568 R13=ffffffff85fc1568 R14=ffffffff85fc1568 R15=dffffc0000000000 RIP=ffffffff8112fc7f RFL=00000212 [----A--] 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 00007fef2ea1a900 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=00007fef2efd1618 CR3=0000000019efa000 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