syzkaller login: [ 31.161141] BUG: Bad rss-counter state mm:00000000f90c5d41 type:MM_FILEPAGES val:33 [ 31.162800] BUG: Bad rss-counter state mm:00000000f90c5d41 type:MM_ANONPAGES val:22 [ 31.313259] ================================================================== [ 31.314329] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.315428] Read of size 8 at addr ffff88800c581310 by task sshd/221 [ 31.316453] [ 31.316732] CPU: 1 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 31.317769] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.318944] Call Trace: [ 31.319320] [ 31.319647] dump_stack_lvl+0x91/0xf0 [ 31.320220] print_report+0xcc/0x620 [ 31.320818] ? __virt_addr_valid+0x102/0x340 [ 31.321468] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.322169] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.322884] kasan_report+0xbe/0xf0 [ 31.323417] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.324110] vma_interval_tree_remove+0xc75/0xec0 [ 31.324830] vma_prepare+0xc54/0x11a0 [ 31.325377] __split_vma+0x5af/0x950 [ 31.325907] ? __pfx___split_vma+0x10/0x10 [ 31.326517] ? find_held_lock+0x2c/0x110 [ 31.327109] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.327751] ? lock_is_held_type+0x9f/0x120 [ 31.328380] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.329136] ? mtree_range_walk+0x632/0x900 [ 31.329777] ? mas_walk+0x5c7/0x7c0 [ 31.330327] do_vmi_munmap+0x1f1/0x2b0 [ 31.330904] mmap_region+0x1f9/0x2660 [ 31.331468] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.332060] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.332935] ? __pfx_lock_acquire+0x10/0x10 [ 31.333554] ? __pfx_mmap_region+0x10/0x10 [ 31.334172] ? security_mmap_addr+0x7d/0xa0 [ 31.334809] ? get_unmapped_area+0x1f5/0x3f0 [ 31.335456] do_mmap+0x854/0xf00 [ 31.335958] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.336527] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.337217] ksys_mmap_pgoff+0x3af/0x500 [ 31.337802] do_syscall_64+0x3f/0x90 [ 31.338351] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.339116] RIP: 0033:0x7fbeeac79d82 [ 31.339640] 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 [ 31.342114] RSP: 002b:00007ffd42747998 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.343178] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fbeeac79d82 [ 31.344148] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fbeea0b3000 [ 31.345161] RBP: 00007fbeea0b3000 R08: 0000000000000009 R09: 0000000000001000 [ 31.346135] R10: 0000000000000812 R11: 0000000000000206 R12: 000055942aa48d90 [ 31.347126] R13: 00007ffd427479b0 R14: 00007ffd427479e0 R15: 00007ffd42747d40 [ 31.348106] [ 31.348442] [ 31.348698] Allocated by task 214: [ 31.349212] kasan_save_stack+0x22/0x50 [ 31.349783] kasan_set_track+0x25/0x30 [ 31.350344] __kasan_slab_alloc+0x59/0x70 [ 31.350951] kmem_cache_alloc+0x16b/0x370 [ 31.351544] vm_area_dup+0x20/0x160 [ 31.352064] __split_vma+0x170/0x950 [ 31.352587] split_vma+0xc6/0x110 [ 31.353120] mprotect_fixup+0x8d2/0xb30 [ 31.353691] do_mprotect_pkey+0x87e/0xd40 [ 31.354291] __x64_sys_mprotect+0x78/0xc0 [ 31.354907] do_syscall_64+0x3f/0x90 [ 31.355454] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.356198] [ 31.356442] Freed by task 214: [ 31.356927] kasan_save_stack+0x22/0x50 [ 31.357577] kasan_set_track+0x25/0x30 [ 31.358144] kasan_save_free_info+0x2b/0x50 [ 31.358763] __kasan_slab_free+0x10a/0x190 [ 31.359374] kmem_cache_free+0x10d/0x4d0 [ 31.359953] rcu_core+0x8c8/0x2860 [ 31.360457] __do_softirq+0x1b7/0x7d4 [ 31.361037] [ 31.361283] Last potentially related work creation: [ 31.361953] kasan_save_stack+0x22/0x50 [ 31.362554] __kasan_record_aux_stack+0x8e/0xa0 [ 31.363207] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.363933] remove_vma+0x139/0x170 [ 31.364439] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.365100] do_vmi_munmap+0x1f1/0x2b0 [ 31.365651] __vm_munmap+0x138/0x3a0 [ 31.366177] __x64_sys_munmap+0x59/0x80 [ 31.366757] do_syscall_64+0x3f/0x90 [ 31.367298] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.368017] [ 31.368262] The buggy address belongs to the object at ffff88800c5812b8 [ 31.368262] which belongs to the cache vm_area_struct of size 168 [ 31.369934] The buggy address is located 88 bytes inside of [ 31.369934] freed 168-byte region [ffff88800c5812b8, ffff88800c581360) [ 31.371522] [ 31.371767] The buggy address belongs to the physical page: [ 31.372507] page:0000000043da92c7 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xc581 [ 31.373747] memcg:ffff88800c6b9901 [ 31.374225] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.374977] page_type: 0xffffffff() [ 31.375483] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 31.376515] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800c6b9901 [ 31.377579] page dumped because: kasan: bad access detected [ 31.378311] [ 31.378565] Memory state around the buggy address: [ 31.379206] ffff88800c581200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 31.380150] ffff88800c581280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ 31.381126] >ffff88800c581300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 31.382049] ^ [ 31.382585] ffff88800c581380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 31.383509] ffff88800c581400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 31.384434] ================================================================== [ 31.385594] Disabling lock debugging due to kernel taint [ 34.251842] BUG: Bad rss-counter state mm:0000000064857d86 type:MM_FILEPAGES val:33 [ 34.252653] BUG: Bad rss-counter state mm:0000000064857d86 type:MM_ANONPAGES val:22 [ 34.798812] BUG: Bad rss-counter state mm:000000009ec2f5fe type:MM_FILEPAGES val:33 [ 34.800118] BUG: Bad rss-counter state mm:000000009ec2f5fe type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:17227' (ECDSA) to the list of known hosts. 2023/06/21 02:32:12 fuzzer started 2023/06/21 02:32:12 dialing manager at localhost:36067 2023/06/21 02:32:12 checking machine... 2023/06/21 02:32:12 checking revisions... [ 35.452986] kmemleak: Automatic memory scanning thread ended 2023/06/21 02:32:13 testing simple program... [ 35.503572] cgroup: Unknown subsys name 'net' [ 35.543642] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 02:32:12 Registers: info registers vcpu 0 RAX=00007fffdd12a270 RBX=0000000000000002 RCX=00007fffdd12a270 RDX=00000000ffffffff RSI=00007fffdd12a570 RDI=00007fffdd12a570 RBP=0000000000000000 RSP=00007fffdd12a0b0 R8 =0000000000000000 R9 =0000000000000010 R10=0000000000000002 R11=0000000000656434 R12=00007fffdd12a580 R13=00007fffdd12a580 R14=0000000000000000 R15=00007fffdd12a280 RIP=00007f251bae97c7 RFL=00000202 [-------] 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 00007f251b2e1900 00000000 00000000 GS =0000 0000000000000000 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=00007f251a75f7d0 CR3=000000000d824000 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=ec2efd57dc4c00df000000000011a9c0 XMM01=ec2efd57dc4c00df000000000011a9c0 XMM02=7e8a42789393c4b7000000000011a758 XMM03=e042d86d42eb936e0000000000122118 XMM04=139997807ff5a4420000000000123818 XMM05=d59e07bde36eea69000000000011a8b8 XMM06=b3285ca56c489dff000000000010a4c8 XMM07=8cdec34d38af4c0a00000000000f7b38 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88801699c2e0 RBX=ffff88801699c2e0 RCX=ffff88801699c000 RDX=0000000000000000 RSI=0000000000000130 RDI=ffffea00005a6700 RBP=0000000000000000 RSP=ffff8880094e7d00 R8 =0000000000000001 R9 =0000000000000000 R10=0000000000000008 R11=00000000000b6d7d R12=ffff88800844f780 R13=ffffea0000660400 R14=ffffffff813782f8 R15=ffff88800ddf3a80 RIP=ffffffff8180efab RFL=00000286 [--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 =0000 0000000000000000 00000000 00000000 DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f0a9a26e900 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=00007fff46444000 CR3=000000000de70000 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=0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a XMM01=0000000000000000000000000000ff00 XMM02=ffffffffffffff00ffff000000000000 XMM03=207265766574616877206f642079616d XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00ffffffffffffffffffffffffffffff XMM08=00000000000000810000363532616873 XMM09=00000000000000000000000000000000 XMM10=00002020202020200020202020202020 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000