syzkaller login: [ 30.705593] BUG: Bad rss-counter state mm:00000000fe2c95d9 type:MM_FILEPAGES val:33 [ 30.706882] BUG: Bad rss-counter state mm:00000000fe2c95d9 type:MM_ANONPAGES val:22 [ 30.867976] ================================================================== [ 30.868880] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.869814] Read of size 8 at addr ffff88800f127310 by task sshd/221 [ 30.870679] [ 30.870902] CPU: 0 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.871763] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.872733] Call Trace: [ 30.873053] [ 30.873339] dump_stack_lvl+0x91/0xf0 [ 30.873841] print_report+0xcc/0x620 [ 30.874326] ? __virt_addr_valid+0x102/0x340 [ 30.874904] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.875520] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.876150] kasan_report+0xbe/0xf0 [ 30.876624] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.877250] vma_interval_tree_remove+0xc75/0xec0 [ 30.877862] vma_prepare+0xc54/0x11a0 [ 30.878339] __split_vma+0x5af/0x950 [ 30.878820] ? __pfx___split_vma+0x10/0x10 [ 30.879349] ? find_held_lock+0x2c/0x110 [ 30.879869] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.880427] ? lock_is_held_type+0x9f/0x120 [ 30.880970] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.881569] ? mtree_range_walk+0x632/0x900 [ 30.882119] ? mas_walk+0x5c7/0x7c0 [ 30.882595] do_vmi_munmap+0x1f1/0x2b0 [ 30.883088] mmap_region+0x1f9/0x2660 [ 30.883566] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.884080] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.884798] ? __pfx_lock_acquire+0x10/0x10 [ 30.885321] ? __pfx_mmap_region+0x10/0x10 [ 30.885844] ? security_mmap_addr+0x7d/0xa0 [ 30.886372] ? get_unmapped_area+0x1f5/0x3f0 [ 30.886932] do_mmap+0x854/0xf00 [ 30.887371] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.887872] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.888429] ksys_mmap_pgoff+0x3af/0x500 [ 30.888938] do_syscall_64+0x3f/0x90 [ 30.889411] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.890052] RIP: 0033:0x7f3d184c6d82 [ 30.890501] 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 [ 30.892602] RSP: 002b:00007ffd948aa0d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.893491] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f3d184c6d82 [ 30.894334] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f3d17900000 [ 30.895179] RBP: 00007f3d17900000 R08: 0000000000000009 R09: 0000000000001000 [ 30.896021] R10: 0000000000000812 R11: 0000000000000206 R12: 0000558ba42e9ec0 [ 30.896860] R13: 00007ffd948aa0f0 R14: 00007ffd948aa120 R15: 00007ffd948aa480 [ 30.897715] [ 30.898004] [ 30.898216] Allocated by task 214: [ 30.898658] kasan_save_stack+0x22/0x50 [ 30.899166] kasan_set_track+0x25/0x30 [ 30.899654] __kasan_slab_alloc+0x59/0x70 [ 30.900169] kmem_cache_alloc+0x16b/0x370 [ 30.900676] vm_area_dup+0x20/0x160 [ 30.901124] __split_vma+0x170/0x950 [ 30.901589] split_vma+0xc6/0x110 [ 30.902022] mprotect_fixup+0x8d2/0xb30 [ 30.902519] do_mprotect_pkey+0x87e/0xd40 [ 30.903055] __x64_sys_mprotect+0x78/0xc0 [ 30.903575] do_syscall_64+0x3f/0x90 [ 30.904047] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.904687] [ 30.904900] Freed by task 204: [ 30.905287] kasan_save_stack+0x22/0x50 [ 30.905782] kasan_set_track+0x25/0x30 [ 30.906274] kasan_save_free_info+0x2b/0x50 [ 30.906832] __kasan_slab_free+0x10a/0x190 [ 30.907356] kmem_cache_free+0x10d/0x4d0 [ 30.907859] rcu_core+0x8c8/0x2860 [ 30.908296] __do_softirq+0x1b7/0x7d4 [ 30.908770] [ 30.908993] Last potentially related work creation: [ 30.909569] kasan_save_stack+0x22/0x50 [ 30.910075] __kasan_record_aux_stack+0x8e/0xa0 [ 30.910649] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.911284] remove_vma+0x139/0x170 [ 30.911732] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.912288] do_vmi_munmap+0x1f1/0x2b0 [ 30.912770] __vm_munmap+0x138/0x3a0 [ 30.913236] __x64_sys_munmap+0x59/0x80 [ 30.913729] do_syscall_64+0x3f/0x90 [ 30.914199] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.914864] [ 30.915081] Second to last potentially related work creation: [ 30.915769] kasan_save_stack+0x22/0x50 [ 30.916269] __kasan_record_aux_stack+0x8e/0xa0 [ 30.916840] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.917477] remove_vma+0x139/0x170 [ 30.917922] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.918478] do_vmi_munmap+0x1f1/0x2b0 [ 30.918968] __vm_munmap+0x138/0x3a0 [ 30.919431] elf_map+0x26f/0x310 [ 30.919871] load_elf_binary+0xd82/0x5030 [ 30.920390] bprm_execve+0x803/0x1940 [ 30.920861] do_execveat_common+0x734/0x8e0 [ 30.921377] __x64_sys_execve+0x93/0xc0 [ 30.921861] do_syscall_64+0x3f/0x90 [ 30.922330] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.922986] [ 30.923200] The buggy address belongs to the object at ffff88800f1272b8 [ 30.923200] which belongs to the cache vm_area_struct of size 168 [ 30.924654] The buggy address is located 88 bytes inside of [ 30.924654] freed 168-byte region [ffff88800f1272b8, ffff88800f127360) [ 30.926047] [ 30.926261] The buggy address belongs to the physical page: [ 30.926932] page:00000000922df38f refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xf127 [ 30.928020] memcg:ffff88800d3dfb01 [ 30.928442] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 30.929136] page_type: 0xffffffff() [ 30.929586] raw: 0100000000000200 ffff8880087a0c80 ffffea0000391cc0 dead000000000003 [ 30.930496] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d3dfb01 [ 30.931399] page dumped because: kasan: bad access detected [ 30.932065] [ 30.932279] Memory state around the buggy address: [ 30.932856] ffff88800f127200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 30.933698] ffff88800f127280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ 30.934552] >ffff88800f127300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 30.935427] ^ [ 30.935886] ffff88800f127380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 30.936732] ffff88800f127400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 30.937585] ================================================================== [ 30.938552] Disabling lock debugging due to kernel taint [ 32.797680] BUG: Bad rss-counter state mm:000000008d0609fa type:MM_FILEPAGES val:33 [ 32.798584] BUG: Bad rss-counter state mm:000000008d0609fa type:MM_ANONPAGES val:22 [ 33.267872] BUG: Bad rss-counter state mm:00000000257fb62d type:MM_FILEPAGES val:33 [ 33.268897] BUG: Bad rss-counter state mm:00000000257fb62d type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:50018' (ECDSA) to the list of known hosts. 2023/06/21 06:58:27 fuzzer started 2023/06/21 06:58:27 dialing manager at localhost:36067 2023/06/21 06:58:27 checking machine... 2023/06/21 06:58:27 checking revisions... [ 34.002782] kmemleak: Automatic memory scanning thread ended 2023/06/21 06:58:27 testing simple program... [ 34.049287] cgroup: Unknown subsys name 'net' [ 34.086661] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 06:58:27 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffff888008cdc300 RCX=0000000000000000 RDX=ffff8880166f3680 RSI=ffffffff8224652f RDI=ffff88801abaa000 RBP=ffff88801abaa000 RSP=ffff888016b47390 R8 =0000000000000005 R9 =0000000000000000 R10=000000000100007f R11=00000000000b6a61 R12=0000000000000004 R13=0000000000000002 R14=ffff888016b47420 R15=000000000100007f RIP=ffffffff814c089b 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 00007fdf34b17900 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=00007fdf350ce618 CR3=000000000c5d6000 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=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 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8451250e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffff888008e07e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=ffff888008c04400 R12=ffffffff85d3d350 R13=1ffff110011c0fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8451349f RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=1 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=00007fdf350cf0b0 CR3=000000000df80000 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=2037323a38353a3630203132206e754a XMM01=73732878696e755f6d6170203a5d3033 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3033325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732036323a38353a3630203132 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000