syzkaller login: [ 31.780863] BUG: Bad rss-counter state mm:00000000d21ebc5f type:MM_FILEPAGES val:33 [ 31.782054] BUG: Bad rss-counter state mm:00000000d21ebc5f type:MM_ANONPAGES val:22 [ 31.936564] ================================================================== [ 31.937477] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.938424] Read of size 8 at addr ffff88800e585058 by task sshd/220 [ 31.939270] [ 31.939489] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 31.940366] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.941358] Call Trace: [ 31.941678] [ 31.941969] dump_stack_lvl+0x91/0xf0 [ 31.942463] print_report+0xcc/0x620 [ 31.942945] ? __virt_addr_valid+0x102/0x340 [ 31.943506] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.944166] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.944914] kasan_report+0xbe/0xf0 [ 31.945394] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.946035] vma_interval_tree_remove+0xc75/0xec0 [ 31.946665] vma_prepare+0xc54/0x11a0 [ 31.947144] __split_vma+0x5af/0x950 [ 31.947633] ? __pfx___split_vma+0x10/0x10 [ 31.948176] ? find_held_lock+0x2c/0x110 [ 31.948743] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.949315] ? lock_is_held_type+0x9f/0x120 [ 31.949870] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.950475] ? mtree_range_walk+0x632/0x900 [ 31.951045] ? mas_walk+0x5c7/0x7c0 [ 31.951520] do_vmi_munmap+0x1f1/0x2b0 [ 31.952031] mmap_region+0x1f9/0x2660 [ 31.952560] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.953088] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.953832] ? __pfx_lock_acquire+0x10/0x10 [ 31.954370] ? __pfx_mmap_region+0x10/0x10 [ 31.954923] ? security_mmap_addr+0x7d/0xa0 [ 31.955452] ? get_unmapped_area+0x1f5/0x3f0 [ 31.956025] do_mmap+0x854/0xf00 [ 31.956494] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.957011] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.957591] ksys_mmap_pgoff+0x3af/0x500 [ 31.958110] do_syscall_64+0x3f/0x90 [ 31.958605] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.959264] RIP: 0033:0x7f37f9c1dd82 [ 31.959751] 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 [ 31.961967] RSP: 002b:00007ffd74babef8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.962885] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f37f9c1dd82 [ 31.963743] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f37f9057000 [ 31.964611] RBP: 00007f37f9057000 R08: 0000000000000009 R09: 0000000000001000 [ 31.965460] R10: 0000000000000812 R11: 0000000000000206 R12: 000055c949623ec0 [ 31.966315] R13: 00007ffd74babf10 R14: 00007ffd74babf40 R15: 00007ffd74bac2a0 [ 31.967169] [ 31.967471] [ 31.967690] Allocated by task 213: [ 31.968119] kasan_save_stack+0x22/0x50 [ 31.968648] kasan_set_track+0x25/0x30 [ 31.969146] __kasan_slab_alloc+0x59/0x70 [ 31.969679] kmem_cache_alloc+0x16b/0x370 [ 31.970201] vm_area_dup+0x20/0x160 [ 31.970659] __split_vma+0x170/0x950 [ 31.971128] split_vma+0xc6/0x110 [ 31.971574] mprotect_fixup+0x8d2/0xb30 [ 31.972074] do_mprotect_pkey+0x87e/0xd40 [ 31.972612] __x64_sys_mprotect+0x78/0xc0 [ 31.973146] do_syscall_64+0x3f/0x90 [ 31.973619] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.974260] [ 31.974478] Freed by task 213: [ 31.974876] kasan_save_stack+0x22/0x50 [ 31.975377] kasan_set_track+0x25/0x30 [ 31.975886] kasan_save_free_info+0x2b/0x50 [ 31.976447] __kasan_slab_free+0x10a/0x190 [ 31.976993] kmem_cache_free+0x10d/0x4d0 [ 31.977501] rcu_core+0x8c8/0x2860 [ 31.977955] __do_softirq+0x1b7/0x7d4 [ 31.978436] [ 31.978654] Last potentially related work creation: [ 31.979249] kasan_save_stack+0x22/0x50 [ 31.979756] __kasan_record_aux_stack+0x8e/0xa0 [ 31.980342] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.980997] remove_vma+0x139/0x170 [ 31.981457] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.982020] do_vmi_munmap+0x1f1/0x2b0 [ 31.982504] __vm_munmap+0x138/0x3a0 [ 31.982982] __x64_sys_munmap+0x59/0x80 [ 31.983480] do_syscall_64+0x3f/0x90 [ 31.983962] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.984621] [ 31.984839] Second to last potentially related work creation: [ 31.985530] kasan_save_stack+0x22/0x50 [ 31.986042] __kasan_record_aux_stack+0x8e/0xa0 [ 31.986621] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.987260] remove_vma+0x139/0x170 [ 31.987717] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.988277] do_vmi_munmap+0x1f1/0x2b0 [ 31.988792] __vm_munmap+0x138/0x3a0 [ 31.989267] __x64_sys_munmap+0x59/0x80 [ 31.989767] do_syscall_64+0x3f/0x90 [ 31.990247] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.990886] [ 31.991104] The buggy address belongs to the object at ffff88800e585000 [ 31.991104] which belongs to the cache vm_area_struct of size 168 [ 31.992585] The buggy address is located 88 bytes inside of [ 31.992585] freed 168-byte region [ffff88800e585000, ffff88800e5850a8) [ 31.993989] [ 31.994203] The buggy address belongs to the physical page: [ 31.994860] page:000000005db9aae0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe585 [ 31.995947] memcg:ffff888009382101 [ 31.996385] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.997033] page_type: 0xffffffff() [ 31.997494] raw: 0100000000000200 ffff88800879fc80 dead000000000100 dead000000000122 [ 31.998418] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888009382101 [ 31.999331] page dumped because: kasan: bad access detected [ 31.999997] [ 32.000215] Memory state around the buggy address: [ 32.000816] ffff88800e584f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.001672] ffff88800e584f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.002527] >ffff88800e585000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 32.003375] ^ [ 32.004102] ffff88800e585080: fb fb fb fb fb fc fc fc fc fc fc fc fc 00 00 00 [ 32.004975] ffff88800e585100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 32.005820] ================================================================== [ 32.006784] Disabling lock debugging due to kernel taint [ 34.594999] BUG: Bad rss-counter state mm:000000007da6a235 type:MM_FILEPAGES val:33 [ 34.596021] BUG: Bad rss-counter state mm:000000007da6a235 type:MM_ANONPAGES val:22 [ 35.057375] BUG: Bad rss-counter state mm:00000000bc45be01 type:MM_FILEPAGES val:33 [ 35.058834] BUG: Bad rss-counter state mm:00000000bc45be01 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:33801' (ECDSA) to the list of known hosts. 2023/06/19 22:30:04 fuzzer started 2023/06/19 22:30:04 dialing manager at localhost:44161 2023/06/19 22:30:04 checking machine... 2023/06/19 22:30:04 checking revisions... [ 35.775715] kmemleak: Automatic memory scanning thread ended 2023/06/19 22:30:04 testing simple program... [ 35.825171] cgroup: Unknown subsys name 'net' [ 35.877348] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 22:30:02 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=ffff888014777960 RCX=0000000000000001 RDX=1ffff110028eef2e RSI=ffff888014777f58 RDI=ffff888014777970 RBP=ffff888014777f58 RSP=ffff8880147778b8 R8 =ffffffff864b9d5a R9 =ffff8880147779a0 R10=0000000000038001 R11=00000000000b6996 R12=00000000000000a8 R13=ffff888014770000 R14=ffff888014777f58 R15=ffff888014777960 RIP=ffffffff8113046e RFL=00000246 [---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 00007f20f9cbe8c0 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=00007f0f20e08000 CR3=000000000eae2000 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=25252525252525252525252525252525 XMM01=00000000000000ff0000000000ff0000 XMM02=00000000000000ff0000000000ff0000 XMM03=000055cd7edd0bf0000055cd7edebfb0 XMM04=ffffffff00000002000055cd7edd0bf0 XMM05=000055cd7edd0120000055cd7edaeec0 XMM06=000055cd7edbcb000000000000000000 XMM07=00000000000000000000000000000000 XMM08=732f636f72702f006b63616d7300632e XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88800d744788 RBX=ffff88800d9ccd78 RCX=1ffff11002015db1 RDX=dffffc0000000000 RSI=ffffffff87b86f80 RDI=ffff8880100aed88 RBP=ffff8880100aed78 RSP=ffff88806cf09db8 R8 =0000000000000001 R9 =ffffed100d9e13af R10=0000000000000003 R11=0000000000000001 R12=ffff88800d9ccd88 R13=ffff88800de77d78 R14=ffff8880100aed78 R15=ffffffff87b86f80 RIP=ffffffff844cc264 RFL=00000086 [--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 00007fa9d79f7900 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=00007ffc285c0000 CR3=000000000b9a8000 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=635f6e6f69737365733a4d41503d706f XMM01=6f6c5f6d61702c78756e696c65735f6d XMM02=61702c74696d7265705f6d61702c7469 XMM03=655f6d61702c7374696d696c5f6d6170 XMM04=3d6c616e696d72657420322e322e302e XMM05=3d656d616e74736f682022646873732f XMM06=746f6f72223d746363612078756e696c XMM07=6e655f6d61702c7374696d696c5f6d61 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000