syzkaller login: [ 31.626663] BUG: Bad rss-counter state mm:000000000dae4c1d type:MM_FILEPAGES val:33 [ 31.628331] BUG: Bad rss-counter state mm:000000000dae4c1d type:MM_ANONPAGES val:22 [ 31.788832] ================================================================== [ 31.789755] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.790707] Read of size 8 at addr ffff88800e0654e0 by task sshd/220 [ 31.791488] [ 31.791710] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 31.792787] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.793779] Call Trace: [ 31.794099] [ 31.794391] dump_stack_lvl+0x91/0xf0 [ 31.794920] print_report+0xcc/0x620 [ 31.795404] ? __virt_addr_valid+0x102/0x340 [ 31.795962] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.796608] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.797226] kasan_report+0xbe/0xf0 [ 31.797699] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.798321] vma_interval_tree_remove+0xc75/0xec0 [ 31.798929] vma_prepare+0xc54/0x11a0 [ 31.799423] __split_vma+0x5af/0x950 [ 31.799897] ? __pfx___split_vma+0x10/0x10 [ 31.800454] ? find_held_lock+0x2c/0x110 [ 31.800976] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.801548] ? lock_is_held_type+0x9f/0x120 [ 31.802086] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.802694] ? mtree_range_walk+0x632/0x900 [ 31.803251] ? mas_walk+0x5c7/0x7c0 [ 31.803725] do_vmi_munmap+0x1f1/0x2b0 [ 31.804218] mmap_region+0x1f9/0x2660 [ 31.804710] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.805222] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.805948] ? __pfx_lock_acquire+0x10/0x10 [ 31.806493] ? __pfx_mmap_region+0x10/0x10 [ 31.807044] ? security_mmap_addr+0x7d/0xa0 [ 31.807589] ? get_unmapped_area+0x1f5/0x3f0 [ 31.808154] do_mmap+0x854/0xf00 [ 31.808612] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.809109] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.809686] ksys_mmap_pgoff+0x3af/0x500 [ 31.810192] do_syscall_64+0x3f/0x90 [ 31.810686] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.811343] RIP: 0033:0x7f5b8e994d82 [ 31.811802] 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 [ 31.813944] RSP: 002b:00007ffd7605fa58 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.814853] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f5b8e994d82 [ 31.815761] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f5b8ddce000 [ 31.816707] RBP: 00007f5b8ddce000 R08: 0000000000000009 R09: 0000000000001000 [ 31.817610] R10: 0000000000000812 R11: 0000000000000206 R12: 000055c030e67ec0 [ 31.818509] R13: 00007ffd7605fa70 R14: 00007ffd7605faa0 R15: 00007ffd7605fe00 [ 31.819427] [ 31.819735] [ 31.819959] Allocated by task 213: [ 31.820425] kasan_save_stack+0x22/0x50 [ 31.820967] kasan_set_track+0x25/0x30 [ 31.821501] __kasan_slab_alloc+0x59/0x70 [ 31.822057] kmem_cache_alloc+0x16b/0x370 [ 31.822602] vm_area_dup+0x20/0x160 [ 31.823086] __split_vma+0x170/0x950 [ 31.823579] split_vma+0xc6/0x110 [ 31.824035] mprotect_fixup+0x8d2/0xb30 [ 31.824575] do_mprotect_pkey+0x87e/0xd40 [ 31.825104] __x64_sys_mprotect+0x78/0xc0 [ 31.825626] do_syscall_64+0x3f/0x90 [ 31.826104] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.826749] [ 31.826971] Freed by task 213: [ 31.827375] kasan_save_stack+0x22/0x50 [ 31.827904] kasan_set_track+0x25/0x30 [ 31.828443] kasan_save_free_info+0x2b/0x50 [ 31.829011] __kasan_slab_free+0x10a/0x190 [ 31.829572] kmem_cache_free+0x10d/0x4d0 [ 31.830113] rcu_core+0x8c8/0x2860 [ 31.830579] __do_softirq+0x1b7/0x7d4 [ 31.831082] [ 31.831302] Last potentially related work creation: [ 31.831901] kasan_save_stack+0x22/0x50 [ 31.832441] __kasan_record_aux_stack+0x8e/0xa0 [ 31.833043] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.833713] remove_vma+0x139/0x170 [ 31.834285] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.834873] do_vmi_munmap+0x1f1/0x2b0 [ 31.835378] __vm_munmap+0x138/0x3a0 [ 31.835867] __x64_sys_munmap+0x59/0x80 [ 31.836407] do_syscall_64+0x3f/0x90 [ 31.836903] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.837570] [ 31.837796] The buggy address belongs to the object at ffff88800e065488 [ 31.837796] which belongs to the cache vm_area_struct of size 168 [ 31.839337] The buggy address is located 88 bytes inside of [ 31.839337] freed 168-byte region [ffff88800e065488, ffff88800e065530) [ 31.840825] [ 31.841050] The buggy address belongs to the physical page: [ 31.841740] page:00000000f1db8652 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe065 [ 31.842874] memcg:ffff88800c626a01 [ 31.843325] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.844002] page_type: 0xffffffff() [ 31.844481] raw: 0100000000000200 ffff8880087a0c80 ffffea000032e040 dead000000000008 [ 31.845447] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800c626a01 [ 31.846398] page dumped because: kasan: bad access detected [ 31.847090] [ 31.847309] Memory state around the buggy address: [ 31.847922] ffff88800e065380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 31.848851] ffff88800e065400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 31.849752] >ffff88800e065480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.850632] ^ [ 31.851423] ffff88800e065500: fb fb fb fb fb fb fc fc fc fc fc fc fc fc 00 00 [ 31.852326] ffff88800e065580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 31.853219] ================================================================== [ 31.854173] Disabling lock debugging due to kernel taint [ 34.229554] BUG: Bad rss-counter state mm:00000000f63e9176 type:MM_FILEPAGES val:33 [ 34.230485] BUG: Bad rss-counter state mm:00000000f63e9176 type:MM_ANONPAGES val:22 [ 34.743834] BUG: Bad rss-counter state mm:000000003cd121f8 type:MM_FILEPAGES val:33 [ 34.744894] BUG: Bad rss-counter state mm:000000003cd121f8 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:57060' (ECDSA) to the list of known hosts. 2023/06/20 12:45:59 fuzzer started 2023/06/20 12:45:59 dialing manager at localhost:36067 2023/06/20 12:45:59 checking machine... 2023/06/20 12:45:59 checking revisions... [ 35.408726] kmemleak: Automatic memory scanning thread ended 2023/06/20 12:45:59 testing simple program... [ 35.455269] cgroup: Unknown subsys name 'net' [ 35.498072] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 12:45:59 Registers: info registers vcpu 0 RAX=00000000dead4ead RBX=ffffffff856d84a0 RCX=0000000000000000 RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff856d84a4 RBP=1ffff11003309f2f RSP=ffff88801984f970 R8 =0000000000000000 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=00000000000b6a61 R12=0000000000000246 R13=0000000000000000 R14=ffff88800c579638 R15=ffff88800c5795f0 RIP=ffffffff812e009a 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 00007f681e098900 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=00007f681e6500b0 CR3=0000000008c70000 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=000000000000000000000000000000ff XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=ffbc64ffffbc44ffffbc34ffffbc9f00 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=000055d2ae3a34c0 RBX=000055d2ae39ad60 RCX=000055d2ae3a0ee0 RDX=0000000000000003 RSI=000055d2ae3a0ee0 RDI=000055d2ae3a2330 RBP=0000000000000006 RSP=00007ffe04183390 R8 =0000000000000000 R9 =00000000000aec30 R10=0000000000000002 R11=00007f43fefeb620 R12=000055d2ae3a0ee0 R13=00000000000aec30 R14=00000000000aec30 R15=0000000000000000 RIP=00007f440066066b RFL=00000206 [-----P-] CPL=3 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0033 0000000000000000 ffffffff 00a0fb00 DPL=3 CS64 [-RA] SS =002b 0000000000000000 ffffffff 00c0f300 DPL=3 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f43fface900 00000000 00000000 GS =0000 0000000000000000 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=00007f43fef2bf10 CR3=000000000c62a000 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=7e8a42789393c4b7000000000011a1c0 XMM01=ffa71420196426befb4510d6eb6d7802 XMM02=2c67c8bc2e329bc3000000000011a498 XMM03=fb795ef6d65770560000000000121208 XMM04=a24aaf3b90e31fa400000000000ae988 XMM05=19e9129bd510f2350000000000130db8 XMM06=d2cc5d59f9768150000000000012ff90 XMM07=e042d86d42eb936e0000000000121488 XMM08=e1b8a8b5b79f20dc000000000011a4f8 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000