syzkaller login: [ 38.711855] BUG: Bad rss-counter state mm:00000000a10da217 type:MM_FILEPAGES val:33 [ 38.712617] BUG: Bad rss-counter state mm:00000000a10da217 type:MM_ANONPAGES val:22 [ 38.827163] ================================================================== [ 38.828237] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 38.829355] Read of size 8 at addr ffff88800dd38c20 by task sshd/218 [ 38.830295] [ 38.830569] CPU: 1 PID: 218 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 38.831885] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 38.833122] Call Trace: [ 38.833548] [ 38.833903] dump_stack_lvl+0x91/0xf0 [ 38.834276] print_report+0xcc/0x620 [ 38.834640] ? __virt_addr_valid+0x102/0x340 [ 38.835043] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.835502] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.835956] kasan_report+0xbe/0xf0 [ 38.836302] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.836762] vma_interval_tree_remove+0xc75/0xec0 [ 38.837200] vma_prepare+0xc54/0x11a0 [ 38.837580] __split_vma+0x5af/0x950 [ 38.837924] ? __pfx___split_vma+0x10/0x10 [ 38.838308] ? find_held_lock+0x2c/0x110 [ 38.838712] do_vmi_align_munmap+0x2ba/0x11f0 [ 38.839168] ? lock_is_held_type+0x9f/0x120 [ 38.839579] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 38.840033] ? mtree_range_walk+0x632/0x900 [ 38.840440] ? mas_walk+0x5c7/0x7c0 [ 38.840813] do_vmi_munmap+0x1f1/0x2b0 [ 38.841183] mmap_region+0x1f9/0x2660 [ 38.841570] ? vm_mmap_pgoff+0x15c/0x3a0 [ 38.841980] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 38.842528] ? __pfx_lock_acquire+0x10/0x10 [ 38.842924] ? __pfx_mmap_region+0x10/0x10 [ 38.843322] ? security_mmap_addr+0x7d/0xa0 [ 38.843731] ? get_unmapped_area+0x1f5/0x3f0 [ 38.844138] do_mmap+0x854/0xf00 [ 38.844477] vm_mmap_pgoff+0x1a6/0x3a0 [ 38.844856] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 38.845275] ksys_mmap_pgoff+0x3af/0x500 [ 38.845693] do_syscall_64+0x3f/0x90 [ 38.846062] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.846566] RIP: 0033:0x7f1308205d82 [ 38.846933] 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 [ 38.848624] RSP: 002b:00007ffd0bb7e618 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 38.849293] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f1308205d82 [ 38.849956] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f130763f000 [ 38.850593] RBP: 00007f130763f000 R08: 0000000000000009 R09: 0000000000001000 [ 38.851225] R10: 0000000000000812 R11: 0000000000000206 R12: 00005606d91bcec0 [ 38.851864] R13: 00007ffd0bb7e630 R14: 00007ffd0bb7e660 R15: 00007ffd0bb7e9c0 [ 38.852519] [ 38.852736] [ 38.852895] Allocated by task 211: [ 38.853213] kasan_save_stack+0x22/0x50 [ 38.853791] kasan_set_track+0x25/0x30 [ 38.854412] __kasan_slab_alloc+0x59/0x70 [ 38.855057] kmem_cache_alloc+0x16b/0x370 [ 38.855689] vm_area_dup+0x20/0x160 [ 38.856280] __split_vma+0x170/0x950 [ 38.856842] split_vma+0xc6/0x110 [ 38.857377] mprotect_fixup+0x8d2/0xb30 [ 38.858019] do_mprotect_pkey+0x87e/0xd40 [ 38.858629] __x64_sys_mprotect+0x78/0xc0 [ 38.859245] do_syscall_64+0x3f/0x90 [ 38.859821] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.860579] [ 38.860838] Freed by task 19: [ 38.861291] kasan_save_stack+0x22/0x50 [ 38.861937] kasan_set_track+0x25/0x30 [ 38.862520] kasan_save_free_info+0x2b/0x50 [ 38.863146] __kasan_slab_free+0x10a/0x190 [ 38.863803] kmem_cache_free+0x10d/0x4d0 [ 38.864400] rcu_core+0x8c8/0x2860 [ 38.864926] __do_softirq+0x1b7/0x7d4 [ 38.865482] [ 38.865753] Last potentially related work creation: [ 38.866438] kasan_save_stack+0x22/0x50 [ 38.867029] __kasan_record_aux_stack+0x8e/0xa0 [ 38.867707] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.868458] remove_vma+0x139/0x170 [ 38.869004] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.869695] do_vmi_munmap+0x1f1/0x2b0 [ 38.870231] __vm_munmap+0x138/0x3a0 [ 38.870702] __x64_sys_munmap+0x59/0x80 [ 38.871193] do_syscall_64+0x3f/0x90 [ 38.871665] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.872313] [ 38.872525] Second to last potentially related work creation: [ 38.873258] kasan_save_stack+0x22/0x50 [ 38.873777] __kasan_record_aux_stack+0x8e/0xa0 [ 38.874346] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.874988] remove_vma+0x139/0x170 [ 38.875448] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.876013] do_vmi_munmap+0x1f1/0x2b0 [ 38.876500] mmap_region+0x1f9/0x2660 [ 38.876976] do_mmap+0x854/0xf00 [ 38.877405] vm_mmap_pgoff+0x1a6/0x3a0 [ 38.877916] ksys_mmap_pgoff+0x3af/0x500 [ 38.878424] do_syscall_64+0x3f/0x90 [ 38.878906] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.879554] [ 38.879768] The buggy address belongs to the object at ffff88800dd38bc8 [ 38.879768] which belongs to the cache vm_area_struct of size 168 [ 38.881246] The buggy address is located 88 bytes inside of [ 38.881246] freed 168-byte region [ffff88800dd38bc8, ffff88800dd38c70) [ 38.882650] [ 38.882865] The buggy address belongs to the physical page: [ 38.883525] page:000000004efdfc32 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xdd38 [ 38.884611] memcg:ffff888013f3b801 [ 38.885044] flags: 0x100000000000200(slab|node=0|zone=1) [ 38.885717] page_type: 0xffffffff() [ 38.886165] raw: 0100000000000200 ffff8880087a0c80 ffffea000037bf80 dead000000000004 [ 38.887087] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888013f3b801 [ 38.887991] page dumped because: kasan: bad access detected [ 38.888657] [ 38.888871] Memory state around the buggy address: [ 38.889457] ffff88800dd38b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.890316] ffff88800dd38b80: fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 38.891172] >ffff88800dd38c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 38.892017] ^ [ 38.892552] ffff88800dd38c80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 38.893401] ffff88800dd38d00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 38.894252] ================================================================== [ 38.895275] Disabling lock debugging due to kernel taint [ 41.100382] BUG: Bad rss-counter state mm:000000007d1a85b2 type:MM_FILEPAGES val:33 [ 41.101198] BUG: Bad rss-counter state mm:000000007d1a85b2 type:MM_ANONPAGES val:22 [ 41.539857] BUG: Bad rss-counter state mm:000000002a05cc68 type:MM_FILEPAGES val:33 [ 41.541039] BUG: Bad rss-counter state mm:000000002a05cc68 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:11425' (ECDSA) to the list of known hosts. 2023/06/21 06:37:57 fuzzer started 2023/06/21 06:37:57 dialing manager at localhost:36067 2023/06/21 06:37:57 checking machine... 2023/06/21 06:37:57 checking revisions... [ 42.248997] kmemleak: Automatic memory scanning thread ended 2023/06/21 06:37:57 testing simple program... [ 42.297785] cgroup: Unknown subsys name 'net' [ 42.353277] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 06:37:57 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000001 RCX=ffff888014787508 RDX=0000000000000001 RSI=ffffffff813ad720 RDI=ffff888014787468 RBP=ffff8880147874c0 RSP=ffff8880147873f8 R8 =0000000000000001 R9 =ffff8880147874a8 R10=0000000000038001 R11=0000000000003c0d R12=ffff8880147874c8 R13=ffff8880147874b0 R14=ffff8880147874a9 R15=ffff888014787468 RIP=ffffffff811306e0 RFL=00000202 [-------] 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 00007f6529c97900 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=00007f6529114380 CR3=000000000cbee000 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=656e6e6f637369443d4547415353454d XMM01=2e303120746f6f722072657375206d6f XMM02=ffffffffffffffffffffffffffffffff XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=9760a4b3a65e771900000000000ae988 XMM05=618b5b003b7981730000000000133b88 XMM06=751b9502027dc0b90000000000132300 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 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=0000000000000001 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=00007ffff058f7e8 CR3=000000000f24c000 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=2037353a37333a3630203132206e754a XMM01=73732878696e755f6d6170203a5d3732 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3732325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732037353a37333a3630203132 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000