syzkaller login: [ 38.677282] BUG: Bad rss-counter state mm:00000000103e7757 type:MM_FILEPAGES val:33 [ 38.678499] BUG: Bad rss-counter state mm:00000000103e7757 type:MM_ANONPAGES val:22 [ 38.821972] ================================================================== [ 38.823048] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 38.824175] Read of size 8 at addr ffff88800cdbbdf0 by task sshd/219 [ 38.825240] [ 38.825511] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 38.826377] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 38.827351] Call Trace: [ 38.827666] [ 38.827952] dump_stack_lvl+0x91/0xf0 [ 38.828444] print_report+0xcc/0x620 [ 38.828927] ? __virt_addr_valid+0x102/0x340 [ 38.829486] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.830095] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.830712] kasan_report+0xbe/0xf0 [ 38.831179] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.831799] vma_interval_tree_remove+0xc75/0xec0 [ 38.832393] vma_prepare+0xc54/0x11a0 [ 38.832871] __split_vma+0x5af/0x950 [ 38.833355] ? __pfx___split_vma+0x10/0x10 [ 38.833882] ? find_held_lock+0x2c/0x110 [ 38.834404] do_vmi_align_munmap+0x2ba/0x11f0 [ 38.834962] ? lock_is_held_type+0x9f/0x120 [ 38.835497] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 38.836099] ? mtree_range_walk+0x632/0x900 [ 38.836652] ? mas_walk+0x5c7/0x7c0 [ 38.837124] do_vmi_munmap+0x1f1/0x2b0 [ 38.837632] mmap_region+0x1f9/0x2660 [ 38.838109] ? vm_mmap_pgoff+0x15c/0x3a0 [ 38.838618] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 38.839339] ? __pfx_lock_acquire+0x10/0x10 [ 38.839874] ? __pfx_mmap_region+0x10/0x10 [ 38.840400] ? security_mmap_addr+0x7d/0xa0 [ 38.840934] ? get_unmapped_area+0x1f5/0x3f0 [ 38.841489] do_mmap+0x854/0xf00 [ 38.841939] vm_mmap_pgoff+0x1a6/0x3a0 [ 38.842427] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 38.842991] ksys_mmap_pgoff+0x3af/0x500 [ 38.843507] do_syscall_64+0x3f/0x90 [ 38.843983] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.844632] RIP: 0033:0x7f9347747d82 [ 38.845088] 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 [ 38.847216] RSP: 002b:00007fffd0af4418 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 38.848115] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f9347747d82 [ 38.848954] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f9346b81000 [ 38.849800] RBP: 00007f9346b81000 R08: 0000000000000009 R09: 0000000000001000 [ 38.850636] R10: 0000000000000812 R11: 0000000000000206 R12: 000055fcfb95aec0 [ 38.851476] R13: 00007fffd0af4430 R14: 00007fffd0af4460 R15: 00007fffd0af47c0 [ 38.852323] [ 38.852611] [ 38.852827] Allocated by task 212: [ 38.853258] kasan_save_stack+0x22/0x50 [ 38.853768] kasan_set_track+0x25/0x30 [ 38.854261] __kasan_slab_alloc+0x59/0x70 [ 38.854785] kmem_cache_alloc+0x16b/0x370 [ 38.855295] vm_area_dup+0x20/0x160 [ 38.855748] __split_vma+0x170/0x950 [ 38.856211] split_vma+0xc6/0x110 [ 38.856643] mprotect_fixup+0x8d2/0xb30 [ 38.857143] do_mprotect_pkey+0x87e/0xd40 [ 38.857671] __x64_sys_mprotect+0x78/0xc0 [ 38.858192] do_syscall_64+0x3f/0x90 [ 38.858668] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.859306] [ 38.859518] Freed by task 212: [ 38.859908] kasan_save_stack+0x22/0x50 [ 38.860414] kasan_set_track+0x25/0x30 [ 38.860905] kasan_save_free_info+0x2b/0x50 [ 38.861443] __kasan_slab_free+0x10a/0x190 [ 38.861977] kmem_cache_free+0x10d/0x4d0 [ 38.862480] rcu_core+0x8c8/0x2860 [ 38.862919] __do_softirq+0x1b7/0x7d4 [ 38.863394] [ 38.863607] Last potentially related work creation: [ 38.864190] kasan_save_stack+0x22/0x50 [ 38.864688] __kasan_record_aux_stack+0x8e/0xa0 [ 38.865256] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.865960] remove_vma+0x139/0x170 [ 38.866414] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.866968] do_vmi_munmap+0x1f1/0x2b0 [ 38.867447] __vm_munmap+0x138/0x3a0 [ 38.867916] __x64_sys_munmap+0x59/0x80 [ 38.868416] do_syscall_64+0x3f/0x90 [ 38.868888] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.869546] [ 38.869773] Second to last potentially related work creation: [ 38.870452] kasan_save_stack+0x22/0x50 [ 38.870956] __kasan_record_aux_stack+0x8e/0xa0 [ 38.871522] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.872165] remove_vma+0x139/0x170 [ 38.872615] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.873166] do_vmi_munmap+0x1f1/0x2b0 [ 38.873678] __vm_munmap+0x138/0x3a0 [ 38.874141] __x64_sys_munmap+0x59/0x80 [ 38.874633] do_syscall_64+0x3f/0x90 [ 38.875108] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.875745] [ 38.875957] The buggy address belongs to the object at ffff88800cdbbd98 [ 38.875957] which belongs to the cache vm_area_struct of size 168 [ 38.877425] The buggy address is located 88 bytes inside of [ 38.877425] freed 168-byte region [ffff88800cdbbd98, ffff88800cdbbe40) [ 38.878814] [ 38.879030] The buggy address belongs to the physical page: [ 38.879690] page:00000000c7a81408 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xcdbb [ 38.880774] memcg:ffff888014480701 [ 38.881193] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 38.881902] page_type: 0xffffffff() [ 38.882351] raw: 0100000000000200 ffff8880087a0c80 ffffea00003a1600 dead000000000003 [ 38.883267] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888014480701 [ 38.884164] page dumped because: kasan: bad access detected [ 38.884814] [ 38.885028] Memory state around the buggy address: [ 38.885632] ffff88800cdbbc80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 38.886483] ffff88800cdbbd00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 38.887327] >ffff88800cdbbd80: fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb [ 38.888165] ^ [ 38.888967] ffff88800cdbbe00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 38.889818] ffff88800cdbbe80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.890658] ================================================================== [ 38.891578] Disabling lock debugging due to kernel taint [ 41.560437] BUG: Bad rss-counter state mm:000000009d257cc2 type:MM_FILEPAGES val:33 [ 41.561479] BUG: Bad rss-counter state mm:000000009d257cc2 type:MM_ANONPAGES val:22 [ 42.103996] BUG: Bad rss-counter state mm:000000005f8035ad type:MM_FILEPAGES val:33 [ 42.104934] BUG: Bad rss-counter state mm:000000005f8035ad type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:25896' (ECDSA) to the list of known hosts. 2023/06/20 13:54:28 fuzzer started 2023/06/20 13:54:28 dialing manager at localhost:36067 2023/06/20 13:54:28 checking machine... 2023/06/20 13:54:28 checking revisions... [ 42.740115] kmemleak: Automatic memory scanning thread ended 2023/06/20 13:54:28 testing simple program... [ 42.786388] cgroup: Unknown subsys name 'net' [ 42.836304] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 13:54:28 Registers: info registers vcpu 0 RAX=ffff88800ef00140 RBX=0000000000000000 RCX=0000000000000001 RDX=0000000000000dc0 RSI=0000000000000000 RDI=ffff888008441500 RBP=ffff888008441500 RSP=ffff88800de87cb0 R8 =0000000000000040 R9 =0000000000000000 R10=ffffffff85d3d357 R11=00000000000b6a61 R12=0000000000000020 R13=0000000000000dc0 R14=0000000000000001 R15=ffff88800d677800 RIP=ffffffff816caeda 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 00007f2440fb0900 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=00007f2441565650 CR3=000000000c998000 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=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=00007f1573254b00 CR3=000000000cca2000 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=1dcc6106f1a504bd594280149079657d XMM02=000000000011b028eff9b2d0a8fce9cb XMM03=000000000011b0f82c67c8bc2e329bc3 XMM04=a577e76cf2324fe200000000000ae988 XMM05=19e9129bd510f2350000000000132f40 XMM06=d5a376b1017dd44d00000000001317f0 XMM07=e042d86d42eb936e0000000000121d10 XMM08=aee9efae902089d1000000000011b0f8 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000