syzkaller login: [ 24.080568] BUG: Bad rss-counter state mm:00000000f0c22f8d type:MM_FILEPAGES val:33 [ 24.081678] BUG: Bad rss-counter state mm:00000000f0c22f8d type:MM_ANONPAGES val:22 [ 24.196189] ================================================================== [ 24.197106] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 24.198001] Read of size 8 at addr ffff88800d7c8228 by task sshd/220 [ 24.198744] [ 24.198947] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 24.199754] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 24.200662] Call Trace: [ 24.200981] [ 24.201248] dump_stack_lvl+0x91/0xf0 [ 24.201714] print_report+0xcc/0x620 [ 24.202192] ? __virt_addr_valid+0x102/0x340 [ 24.202760] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.203432] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.204005] kasan_report+0xbe/0xf0 [ 24.204473] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.205052] vma_interval_tree_remove+0xc75/0xec0 [ 24.205609] vma_prepare+0xc54/0x11a0 [ 24.206017] __split_vma+0x5af/0x950 [ 24.206443] ? __pfx___split_vma+0x10/0x10 [ 24.206953] ? find_held_lock+0x2c/0x110 [ 24.207469] do_vmi_align_munmap+0x2ba/0x11f0 [ 24.207808] ? lock_is_held_type+0x9f/0x120 [ 24.208146] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 24.208516] ? mtree_range_walk+0x632/0x900 [ 24.208838] ? mas_walk+0x5c7/0x7c0 [ 24.209106] do_vmi_munmap+0x1f1/0x2b0 [ 24.209391] mmap_region+0x1f9/0x2660 [ 24.209678] ? vm_mmap_pgoff+0x15c/0x3a0 [ 24.209977] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 24.210400] ? __pfx_lock_acquire+0x10/0x10 [ 24.210709] ? __pfx_mmap_region+0x10/0x10 [ 24.211016] ? security_mmap_addr+0x7d/0xa0 [ 24.211330] ? get_unmapped_area+0x1f5/0x3f0 [ 24.211648] do_mmap+0x854/0xf00 [ 24.211900] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.212185] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 24.212546] ksys_mmap_pgoff+0x3af/0x500 [ 24.212882] do_syscall_64+0x3f/0x90 [ 24.213170] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.213558] RIP: 0033:0x7f2048231d82 [ 24.213829] 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 [ 24.215147] RSP: 002b:00007fff2a44f0e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 24.215674] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f2048231d82 [ 24.216134] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f204766b000 [ 24.216597] RBP: 00007f204766b000 R08: 0000000000000009 R09: 0000000000001000 [ 24.217110] R10: 0000000000000812 R11: 0000000000000206 R12: 00005651e133dec0 [ 24.217648] R13: 00007fff2a44f100 R14: 00007fff2a44f130 R15: 00007fff2a44f490 [ 24.218174] [ 24.218354] [ 24.218506] Allocated by task 213: [ 24.218750] kasan_save_stack+0x22/0x50 [ 24.219042] kasan_set_track+0x25/0x30 [ 24.219329] __kasan_slab_alloc+0x59/0x70 [ 24.219634] kmem_cache_alloc+0x16b/0x370 [ 24.219934] vm_area_dup+0x20/0x160 [ 24.220192] __split_vma+0x170/0x950 [ 24.220460] split_vma+0xc6/0x110 [ 24.220715] mprotect_fixup+0x8d2/0xb30 [ 24.221006] do_mprotect_pkey+0x87e/0xd40 [ 24.221305] __x64_sys_mprotect+0x78/0xc0 [ 24.221605] do_syscall_64+0x3f/0x90 [ 24.221877] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.222248] [ 24.222378] Freed by task 213: [ 24.222605] kasan_save_stack+0x22/0x50 [ 24.222895] kasan_set_track+0x25/0x30 [ 24.223183] kasan_save_free_info+0x2b/0x50 [ 24.223490] __kasan_slab_free+0x10a/0x190 [ 24.223796] kmem_cache_free+0x10d/0x4d0 [ 24.224087] rcu_core+0x8c8/0x2860 [ 24.224344] __do_softirq+0x1b7/0x7d4 [ 24.224626] [ 24.224750] Last potentially related work creation: [ 24.225085] kasan_save_stack+0x22/0x50 [ 24.225373] __kasan_record_aux_stack+0x8e/0xa0 [ 24.225703] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.226072] remove_vma+0x139/0x170 [ 24.226334] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.226668] do_vmi_munmap+0x1f1/0x2b0 [ 24.226947] __vm_munmap+0x138/0x3a0 [ 24.227210] __x64_sys_munmap+0x59/0x80 [ 24.227501] do_syscall_64+0x3f/0x90 [ 24.227773] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.228143] [ 24.228267] Second to last potentially related work creation: [ 24.228659] kasan_save_stack+0x22/0x50 [ 24.228953] __kasan_record_aux_stack+0x8e/0xa0 [ 24.229286] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.229660] remove_vma+0x139/0x170 [ 24.229918] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.230236] do_vmi_munmap+0x1f1/0x2b0 [ 24.230531] __vm_munmap+0x138/0x3a0 [ 24.230801] elf_map+0x26f/0x310 [ 24.231056] load_elf_binary+0x3417/0x5030 [ 24.231357] bprm_execve+0x803/0x1940 [ 24.231631] do_execveat_common+0x734/0x8e0 [ 24.231932] __x64_sys_execve+0x93/0xc0 [ 24.232218] do_syscall_64+0x3f/0x90 [ 24.232488] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.232859] [ 24.232979] The buggy address belongs to the object at ffff88800d7c81d0 [ 24.232979] which belongs to the cache vm_area_struct of size 168 [ 24.233840] The buggy address is located 88 bytes inside of [ 24.233840] freed 168-byte region [ffff88800d7c81d0, ffff88800d7c8278) [ 24.234679] [ 24.234805] The buggy address belongs to the physical page: [ 24.235186] page:0000000060fe6749 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd7c8 [ 24.235822] memcg:ffff88800f380401 [ 24.236067] flags: 0x100000000000200(slab|node=0|zone=1) [ 24.236444] page_type: 0xffffffff() [ 24.236704] raw: 0100000000000200 ffff8880087a0c80 ffffea000039c540 dead000000000008 [ 24.237245] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800f380401 [ 24.237774] page dumped because: kasan: bad access detected [ 24.238159] [ 24.238280] Memory state around the buggy address: [ 24.238622] ffff88800d7c8100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 24.239120] ffff88800d7c8180: 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 24.239623] >ffff88800d7c8200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 24.240118] ^ [ 24.240443] ffff88800d7c8280: fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 [ 24.240939] ffff88800d7c8300: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [ 24.241433] ================================================================== [ 24.242247] Disabling lock debugging due to kernel taint [ 26.066716] BUG: Bad rss-counter state mm:000000001ba41fe5 type:MM_FILEPAGES val:33 [ 26.067760] BUG: Bad rss-counter state mm:000000001ba41fe5 type:MM_ANONPAGES val:22 [ 26.558104] BUG: Bad rss-counter state mm:0000000050eb2dc6 type:MM_FILEPAGES val:33 [ 26.559402] BUG: Bad rss-counter state mm:0000000050eb2dc6 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:51876' (ECDSA) to the list of known hosts. 2023/06/21 08:12:00 fuzzer started 2023/06/21 08:12:00 dialing manager at localhost:36067 2023/06/21 08:12:00 checking machine... 2023/06/21 08:12:00 checking revisions... [ 27.174371] kmemleak: Automatic memory scanning thread ended 2023/06/21 08:12:00 testing simple program... [ 27.241927] cgroup: Unknown subsys name 'net' [ 27.309417] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program [ 36.423286] kmemleak: 68 new suspected memory leaks (see /sys/kernel/debug/kmemleak) VM DIAGNOSIS: 08:12:00 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8451250e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=ffff888008c04000 R12=ffffffff85d3d350 R13=1ffffffff0a80fc7 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 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=00007f1983851048 CR3=0000000018d2c000 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=2030303a32313a3830203132206e754a XMM01=73732878696e755f6d6170203a5d3033 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3033325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732039353a31313a3830203132 XMM08=69767265733d7373616c63742030733a XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000006097 RBX=0000000000000002 RCX=ffffffff81132ffd RDX=0000000000006098 RSI=000000000000132f RDI=ffffffff86098098 RBP=ffff88806cf09ad0 RSP=ffff88806cf099b8 R8 =ffffffff86098092 R9 =0000000000000000 R10=0000000000038001 R11=0000000000006097 R12=ffff88806cf09ad8 R13=ffff88806cf09ac0 R14=ffff88806cf09ab9 R15=ffff88806cf09a78 RIP=ffffffff81130861 RFL=00000293 [--S-A-C] 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 00007fbcaf5fd900 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=00007ffc3801b000 CR3=000000000e586000 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=74696d7265705f6d61703d73726f746e XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=61662029286e65706f5f746964756100 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000