syzkaller login: [ 31.441183] BUG: Bad rss-counter state mm:000000006a55c0b2 type:MM_FILEPAGES val:33 [ 31.442891] BUG: Bad rss-counter state mm:000000006a55c0b2 type:MM_ANONPAGES val:22 [ 31.589350] ================================================================== [ 31.590310] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.591266] Read of size 8 at addr ffff88800ed35140 by task sshd/220 [ 31.592226] [ 31.592449] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 31.593329] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.594319] Call Trace: [ 31.594641] [ 31.594932] dump_stack_lvl+0x91/0xf0 [ 31.595423] print_report+0xcc/0x620 [ 31.595913] ? __virt_addr_valid+0x102/0x340 [ 31.596463] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.597107] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.597724] kasan_report+0xbe/0xf0 [ 31.598204] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.598834] vma_interval_tree_remove+0xc75/0xec0 [ 31.599434] vma_prepare+0xc54/0x11a0 [ 31.599920] __split_vma+0x5af/0x950 [ 31.600391] ? __pfx___split_vma+0x10/0x10 [ 31.600930] ? find_held_lock+0x2c/0x110 [ 31.601456] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.602024] ? lock_is_held_type+0x9f/0x120 [ 31.602568] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.603173] ? mtree_range_walk+0x632/0x900 [ 31.603723] ? mas_walk+0x5c7/0x7c0 [ 31.604203] do_vmi_munmap+0x1f1/0x2b0 [ 31.604700] mmap_region+0x1f9/0x2660 [ 31.605200] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.605710] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.606429] ? __pfx_lock_acquire+0x10/0x10 [ 31.606964] ? __pfx_mmap_region+0x10/0x10 [ 31.607490] ? security_mmap_addr+0x7d/0xa0 [ 31.608020] ? get_unmapped_area+0x1f5/0x3f0 [ 31.608569] do_mmap+0x854/0xf00 [ 31.609034] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.609532] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.610103] ksys_mmap_pgoff+0x3af/0x500 [ 31.610611] do_syscall_64+0x3f/0x90 [ 31.611097] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.611742] RIP: 0033:0x7efe62670d82 [ 31.612198] 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 [ 31.614335] RSP: 002b:00007ffe167a1668 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.615239] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007efe62670d82 [ 31.616085] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007efe61aaa000 [ 31.616934] RBP: 00007efe61aaa000 R08: 0000000000000009 R09: 0000000000001000 [ 31.617778] R10: 0000000000000812 R11: 0000000000000206 R12: 000055fa9619dec0 [ 31.618619] R13: 00007ffe167a1680 R14: 00007ffe167a16b0 R15: 00007ffe167a1a10 [ 31.619476] [ 31.619775] [ 31.619994] Allocated by task 213: [ 31.620422] kasan_save_stack+0x22/0x50 [ 31.620953] kasan_set_track+0x25/0x30 [ 31.621449] __kasan_slab_alloc+0x59/0x70 [ 31.621991] kmem_cache_alloc+0x16b/0x370 [ 31.622505] vm_area_dup+0x20/0x160 [ 31.622962] __split_vma+0x170/0x950 [ 31.623426] split_vma+0xc6/0x110 [ 31.623867] mprotect_fixup+0x8d2/0xb30 [ 31.624369] do_mprotect_pkey+0x87e/0xd40 [ 31.624907] __x64_sys_mprotect+0x78/0xc0 [ 31.625430] do_syscall_64+0x3f/0x90 [ 31.625915] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.626566] [ 31.626786] Freed by task 213: [ 31.627177] kasan_save_stack+0x22/0x50 [ 31.627677] kasan_set_track+0x25/0x30 [ 31.628169] kasan_save_free_info+0x2b/0x50 [ 31.628702] __kasan_slab_free+0x10a/0x190 [ 31.629240] kmem_cache_free+0x10d/0x4d0 [ 31.629751] rcu_core+0x8c8/0x2860 [ 31.630194] __do_softirq+0x1b7/0x7d4 [ 31.630670] [ 31.630890] Last potentially related work creation: [ 31.631479] kasan_save_stack+0x22/0x50 [ 31.631980] __kasan_record_aux_stack+0x8e/0xa0 [ 31.632576] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.633329] remove_vma+0x139/0x170 [ 31.633796] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.634353] do_vmi_munmap+0x1f1/0x2b0 [ 31.634850] __vm_munmap+0x138/0x3a0 [ 31.635329] __x64_sys_munmap+0x59/0x80 [ 31.635844] do_syscall_64+0x3f/0x90 [ 31.636334] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.637000] [ 31.637220] Second to last potentially related work creation: [ 31.637924] kasan_save_stack+0x22/0x50 [ 31.638429] __kasan_record_aux_stack+0x8e/0xa0 [ 31.639017] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.639676] remove_vma+0x139/0x170 [ 31.640135] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.640695] do_vmi_munmap+0x1f1/0x2b0 [ 31.641206] __vm_munmap+0x138/0x3a0 [ 31.641671] elf_map+0x26f/0x310 [ 31.642121] load_elf_binary+0x3417/0x5030 [ 31.642658] bprm_execve+0x803/0x1940 [ 31.643134] do_execveat_common+0x734/0x8e0 [ 31.643657] __x64_sys_execve+0x93/0xc0 [ 31.644144] do_syscall_64+0x3f/0x90 [ 31.644619] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.645277] [ 31.645493] The buggy address belongs to the object at ffff88800ed350e8 [ 31.645493] which belongs to the cache vm_area_struct of size 168 [ 31.646972] The buggy address is located 88 bytes inside of [ 31.646972] freed 168-byte region [ffff88800ed350e8, ffff88800ed35190) [ 31.648369] [ 31.648586] The buggy address belongs to the physical page: [ 31.649258] page:000000005ce9d5c3 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xed35 [ 31.650342] memcg:ffff88800f00ee01 [ 31.650769] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.651410] page_type: 0xffffffff() [ 31.651868] raw: 0100000000000200 ffff8880087a0c80 ffffea0000354e80 dead000000000008 [ 31.652792] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800f00ee01 [ 31.653730] page dumped because: kasan: bad access detected [ 31.654386] [ 31.654601] Memory state around the buggy address: [ 31.655186] ffff88800ed35000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.656040] ffff88800ed35080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 31.656910] >ffff88800ed35100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.657760] ^ [ 31.658397] ffff88800ed35180: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 31.659255] ffff88800ed35200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 31.660118] ================================================================== [ 31.661057] Disabling lock debugging due to kernel taint [ 33.592852] BUG: Bad rss-counter state mm:0000000027f522c4 type:MM_FILEPAGES val:33 [ 33.594053] BUG: Bad rss-counter state mm:0000000027f522c4 type:MM_ANONPAGES val:22 [ 34.027358] BUG: Bad rss-counter state mm:00000000cbaa548f type:MM_FILEPAGES val:33 [ 34.028915] BUG: Bad rss-counter state mm:00000000cbaa548f type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:63199' (ECDSA) to the list of known hosts. 2023/06/21 01:09:35 fuzzer started 2023/06/21 01:09:36 dialing manager at localhost:36067 2023/06/21 01:09:36 checking machine... 2023/06/21 01:09:36 checking revisions... [ 34.781579] kmemleak: Automatic memory scanning thread ended 2023/06/21 01:09:36 testing simple program... [ 34.831872] cgroup: Unknown subsys name 'net' [ 34.879290] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 01:09:35 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffff8880169f3000 RCX=0000000000000007 RDX=0000000000000200 RSI=0000000000000000 RDI=ffffed1002d3e600 RBP=0000000000001000 RSP=ffff88801676f2d8 R8 =0000000000000001 R9 =0000000000000000 R10=ffffed1002d3e600 R11=0000000000000000 R12=0000000000000000 R13=ffffea00005a7cf4 R14=dffffc0000000000 R15=ffff88807ffdc500 RIP=ffffffff84513406 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 =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007fe8eb948900 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=00007ffd662c2000 CR3=00000000167fe000 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=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 info registers vcpu 1 RAX=0000000000000000 RBX=ffffea00003620c0 RCX=0000000000000100 RDX=ffff88800844f780 RSI=ffffffff811431c2 RDI=0000777f80000000 RBP=0000000000000000 RSP=ffff88806cf09d90 R8 =0000000000000001 R9 =0000000000000000 R10=0000000000000008 R11=0000000000000000 R12=ffffffff81845e00 R13=ffffea000025cf00 R14=ffffffff8186b835 R15=ffff88800ebd2580 RIP=ffffffff8180c61b RFL=00000286 [--S--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 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=00007f71f8771000 CR3=0000000009ab4000 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=2035333a39303a3130203132206e754a XMM01=73732878696e755f6d6170203a5d3932 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3932325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732035333a39303a3130203132 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000