syzkaller login: [ 40.657258] BUG: Bad rss-counter state mm:000000002291ba8b type:MM_FILEPAGES val:33 [ 40.658888] BUG: Bad rss-counter state mm:000000002291ba8b type:MM_ANONPAGES val:22 [ 40.821001] ================================================================== [ 40.822113] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 40.823216] Read of size 8 at addr ffff88800d28f228 by task sshd/220 [ 40.824208] [ 40.824430] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 40.825291] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 40.826276] Call Trace: [ 40.826596] [ 40.826880] dump_stack_lvl+0x91/0xf0 [ 40.827375] print_report+0xcc/0x620 [ 40.827873] ? __virt_addr_valid+0x102/0x340 [ 40.828429] ? vma_interval_tree_remove+0xc75/0xec0 [ 40.829049] ? vma_interval_tree_remove+0xc75/0xec0 [ 40.829670] kasan_report+0xbe/0xf0 [ 40.830142] ? vma_interval_tree_remove+0xc75/0xec0 [ 40.830771] vma_interval_tree_remove+0xc75/0xec0 [ 40.831374] vma_prepare+0xc54/0x11a0 [ 40.831888] __split_vma+0x5af/0x950 [ 40.832373] ? __pfx___split_vma+0x10/0x10 [ 40.832916] ? find_held_lock+0x2c/0x110 [ 40.833436] do_vmi_align_munmap+0x2ba/0x11f0 [ 40.834004] ? lock_is_held_type+0x9f/0x120 [ 40.834541] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 40.835147] ? mtree_range_walk+0x632/0x900 [ 40.835721] ? mas_walk+0x5c7/0x7c0 [ 40.836197] do_vmi_munmap+0x1f1/0x2b0 [ 40.836694] mmap_region+0x1f9/0x2660 [ 40.837179] ? vm_mmap_pgoff+0x15c/0x3a0 [ 40.837703] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 40.838423] ? __pfx_lock_acquire+0x10/0x10 [ 40.838953] ? __pfx_mmap_region+0x10/0x10 [ 40.839479] ? security_mmap_addr+0x7d/0xa0 [ 40.840029] ? get_unmapped_area+0x1f5/0x3f0 [ 40.840588] do_mmap+0x854/0xf00 [ 40.841031] vm_mmap_pgoff+0x1a6/0x3a0 [ 40.841535] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 40.842099] ksys_mmap_pgoff+0x3af/0x500 [ 40.842614] do_syscall_64+0x3f/0x90 [ 40.843095] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 40.843755] RIP: 0033:0x7f1e281c0d82 [ 40.844222] 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 [ 40.846371] RSP: 002b:00007ffcec399bf8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 40.847289] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f1e281c0d82 [ 40.848156] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f1e275fa000 [ 40.848999] RBP: 00007f1e275fa000 R08: 0000000000000009 R09: 0000000000001000 [ 40.849853] R10: 0000000000000812 R11: 0000000000000206 R12: 00005643c1b3ff70 [ 40.850713] R13: 00007ffcec399c10 R14: 00007ffcec399c40 R15: 00007ffcec399fa0 [ 40.851595] [ 40.851890] [ 40.852107] Allocated by task 213: [ 40.852537] kasan_save_stack+0x22/0x50 [ 40.853041] kasan_set_track+0x25/0x30 [ 40.853536] __kasan_slab_alloc+0x59/0x70 [ 40.854068] kmem_cache_alloc+0x16b/0x370 [ 40.854603] vm_area_dup+0x20/0x160 [ 40.855062] __split_vma+0x170/0x950 [ 40.855536] split_vma+0xc6/0x110 [ 40.856007] mprotect_fixup+0x8d2/0xb30 [ 40.856517] do_mprotect_pkey+0x87e/0xd40 [ 40.857040] __x64_sys_mprotect+0x78/0xc0 [ 40.857568] do_syscall_64+0x3f/0x90 [ 40.858037] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 40.858686] [ 40.858901] Freed by task 213: [ 40.859292] kasan_save_stack+0x22/0x50 [ 40.859807] kasan_set_track+0x25/0x30 [ 40.860296] kasan_save_free_info+0x2b/0x50 [ 40.860833] __kasan_slab_free+0x10a/0x190 [ 40.861369] kmem_cache_free+0x10d/0x4d0 [ 40.861879] rcu_core+0x8c8/0x2860 [ 40.862325] __do_softirq+0x1b7/0x7d4 [ 40.862946] [ 40.863232] Last potentially related work creation: [ 40.863995] kasan_save_stack+0x22/0x50 [ 40.864659] __kasan_record_aux_stack+0x8e/0xa0 [ 40.865416] __call_rcu_common.constprop.0+0x6a/0xb90 [ 40.866157] remove_vma+0x139/0x170 [ 40.866623] do_vmi_align_munmap+0xd4a/0x11f0 [ 40.867201] do_vmi_munmap+0x1f1/0x2b0 [ 40.867714] __vm_munmap+0x138/0x3a0 [ 40.868233] __x64_sys_munmap+0x59/0x80 [ 40.868746] do_syscall_64+0x3f/0x90 [ 40.869238] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 40.869889] [ 40.870133] Second to last potentially related work creation: [ 40.870832] kasan_save_stack+0x22/0x50 [ 40.871351] __kasan_record_aux_stack+0x8e/0xa0 [ 40.871932] __call_rcu_common.constprop.0+0x6a/0xb90 [ 40.872573] remove_vma+0x139/0x170 [ 40.873023] do_vmi_align_munmap+0xd4a/0x11f0 [ 40.873589] do_vmi_munmap+0x1f1/0x2b0 [ 40.874082] __vm_munmap+0x138/0x3a0 [ 40.874550] elf_map+0x26f/0x310 [ 40.874996] load_elf_binary+0xd82/0x5030 [ 40.875523] bprm_execve+0x803/0x1940 [ 40.876016] kernel_execve+0x3ee/0x510 [ 40.876499] kernel_init+0x14f/0x2d0 [ 40.876978] ret_from_fork+0x2c/0x50 [ 40.877448] [ 40.877663] The buggy address belongs to the object at ffff88800d28f1d0 [ 40.877663] which belongs to the cache vm_area_struct of size 168 [ 40.879144] The buggy address is located 88 bytes inside of [ 40.879144] freed 168-byte region [ffff88800d28f1d0, ffff88800d28f278) [ 40.880579] [ 40.880800] The buggy address belongs to the physical page: [ 40.881469] page:0000000032e2cbf6 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd28f [ 40.882561] memcg:ffff88800f596501 [ 40.882992] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 40.883700] page_type: 0xffffffff() [ 40.884162] raw: 0100000000000200 ffff88800879fc80 ffffea0000392280 dead000000000005 [ 40.885116] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800f596501 [ 40.886046] page dumped because: kasan: bad access detected [ 40.886717] [ 40.886937] Memory state around the buggy address: [ 40.887538] ffff88800d28f100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 40.888486] ffff88800d28f180: 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 40.889396] >ffff88800d28f200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 40.890287] ^ [ 40.890850] ffff88800d28f280: fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 [ 40.891732] ffff88800d28f300: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [ 40.892621] ================================================================== [ 40.893665] Disabling lock debugging due to kernel taint [ 42.631628] BUG: Bad rss-counter state mm:00000000dd46ab33 type:MM_FILEPAGES val:33 [ 42.632764] BUG: Bad rss-counter state mm:00000000dd46ab33 type:MM_ANONPAGES val:22 [ 43.115595] BUG: Bad rss-counter state mm:00000000da40f19c type:MM_FILEPAGES val:33 [ 43.116760] BUG: Bad rss-counter state mm:00000000da40f19c type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:43212' (ECDSA) to the list of known hosts. 2023/06/19 11:51:16 fuzzer started 2023/06/19 11:51:16 dialing manager at localhost:44161 2023/06/19 11:51:16 checking machine... 2023/06/19 11:51:16 checking revisions... [ 43.828812] kmemleak: Automatic memory scanning thread ended 2023/06/19 11:51:16 testing simple program... [ 43.882921] cgroup: Unknown subsys name 'net' [ 43.949589] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 11:51:06 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=ffffffff83640764 RCX=0000000000000001 RDX=1ffff11002deeecf RSI=ffff888016f77ce8 RDI=ffffffff83640764 RBP=ffffffff83640764 RSP=ffff888016f775c8 R8 =0000000000000001 R9 =ffff888016f77660 R10=0000000000038001 R11=000000000008a899 R12=ffff888016f776e8 R13=0000000000000000 R14=ffff888015b90000 R15=ffff888015aad850 RIP=ffffffff811fc6f7 RFL=00000282 [--S----] 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 00007f530ee53900 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=00007f530f408650 CR3=000000000e648000 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=ffffffff8450c50e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffff888008e27e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=ffff888008c58400 R12=ffffffff85d3bed0 R13=1ffff110011c4fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8450d49f 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=00007fc40eca6dc0 CR3=0000000013ab8000 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=a3815c3d9d7599ac304f7b80f451d282 XMM02=ec2efd57dc4c00df000000000011f8d0 XMM03=264b87f69cccabe4000000000011f9a0 XMM04=3321470ab5bc331b00000000000ae988 XMM05=19e9129bd510f23500000000001351d8 XMM06=37fedcdf119c9b6a0000000000134040 XMM07=e042d86d42eb936e0000000000124328 XMM08=264b87f69cccabe4000000000011f9a0 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000