syzkaller login: [ 29.712558] BUG: Bad rss-counter state mm:0000000022b821b4 type:MM_FILEPAGES val:33 [ 29.713421] BUG: Bad rss-counter state mm:0000000022b821b4 type:MM_ANONPAGES val:22 [ 29.746193] ================================================================== [ 29.747066] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 29.747969] Read of size 8 at addr ffff888015a0da50 by task sshd/219 [ 29.748686] [ 29.748911] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 29.749672] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 29.750703] Call Trace: [ 29.751008] [ 29.751220] dump_stack_lvl+0x91/0xf0 [ 29.751762] print_report+0xcc/0x620 [ 29.752280] ? __virt_addr_valid+0x102/0x340 [ 29.752795] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.753419] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.754046] kasan_report+0xbe/0xf0 [ 29.754482] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.754950] vma_interval_tree_remove+0xc75/0xec0 [ 29.755430] vma_prepare+0xc54/0x11a0 [ 29.756072] __split_vma+0x5af/0x950 [ 29.756431] ? __pfx___split_vma+0x10/0x10 [ 29.756876] ? find_held_lock+0x2c/0x110 [ 29.757277] do_vmi_align_munmap+0x2ba/0x11f0 [ 29.757715] ? lock_is_held_type+0x9f/0x120 [ 29.758124] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 29.758605] ? mtree_range_walk+0x632/0x900 [ 29.759053] ? mas_walk+0x5c7/0x7c0 [ 29.759420] do_vmi_munmap+0x1f1/0x2b0 [ 29.759780] mmap_region+0x1f9/0x2660 [ 29.760132] ? vm_mmap_pgoff+0x15c/0x3a0 [ 29.760508] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 29.761031] ? __pfx_lock_acquire+0x10/0x10 [ 29.761480] ? __pfx_mmap_region+0x10/0x10 [ 29.761915] ? security_mmap_addr+0x7d/0xa0 [ 29.762320] ? get_unmapped_area+0x1f5/0x3f0 [ 29.762764] do_mmap+0x854/0xf00 [ 29.763100] vm_mmap_pgoff+0x1a6/0x3a0 [ 29.763483] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 29.763948] ksys_mmap_pgoff+0x3af/0x500 [ 29.764334] do_syscall_64+0x3f/0x90 [ 29.764698] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.765203] RIP: 0033:0x7f49276a1d82 [ 29.765549] 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 [ 29.767180] RSP: 002b:00007ffd5a26d728 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 29.767853] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f49276a1d82 [ 29.768501] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f4926adb000 [ 29.769135] RBP: 00007f4926adb000 R08: 0000000000000009 R09: 0000000000001000 [ 29.769801] R10: 0000000000000812 R11: 0000000000000206 R12: 000055cd02ab3b20 [ 29.770458] R13: 00007ffd5a26d740 R14: 00007ffd5a26d770 R15: 00007ffd5a26dad0 [ 29.771115] [ 29.771341] [ 29.771498] Allocated by task 212: [ 29.771818] kasan_save_stack+0x22/0x50 [ 29.772195] kasan_set_track+0x25/0x30 [ 29.772560] __kasan_slab_alloc+0x59/0x70 [ 29.772959] kmem_cache_alloc+0x16b/0x370 [ 29.773340] vm_area_dup+0x20/0x160 [ 29.773700] __split_vma+0x170/0x950 [ 29.774039] split_vma+0xc6/0x110 [ 29.774374] mprotect_fixup+0x8d2/0xb30 [ 29.774746] do_mprotect_pkey+0x87e/0xd40 [ 29.775141] __x64_sys_mprotect+0x78/0xc0 [ 29.775542] do_syscall_64+0x3f/0x90 [ 29.775928] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.776429] [ 29.776585] Freed by task 212: [ 29.776880] kasan_save_stack+0x22/0x50 [ 29.777249] kasan_set_track+0x25/0x30 [ 29.777630] kasan_save_free_info+0x2b/0x50 [ 29.778024] __kasan_slab_free+0x10a/0x190 [ 29.778422] kmem_cache_free+0x10d/0x4d0 [ 29.778793] rcu_core+0x8c8/0x2860 [ 29.779116] __do_softirq+0x1b7/0x7d4 [ 29.779469] [ 29.779635] Last potentially related work creation: [ 29.780080] kasan_save_stack+0x22/0x50 [ 29.780460] __kasan_record_aux_stack+0x8e/0xa0 [ 29.780930] __call_rcu_common.constprop.0+0x6a/0xb90 [ 29.781428] remove_vma+0x139/0x170 [ 29.781795] do_vmi_align_munmap+0xd4a/0x11f0 [ 29.782197] do_vmi_munmap+0x1f1/0x2b0 [ 29.782562] __vm_munmap+0x138/0x3a0 [ 29.782915] __x64_sys_munmap+0x59/0x80 [ 29.783286] do_syscall_64+0x3f/0x90 [ 29.783640] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.784111] [ 29.784265] The buggy address belongs to the object at ffff888015a0d9f8 [ 29.784265] which belongs to the cache vm_area_struct of size 168 [ 29.785406] The buggy address is located 88 bytes inside of [ 29.785406] freed 168-byte region [ffff888015a0d9f8, ffff888015a0daa0) [ 29.786521] [ 29.786686] The buggy address belongs to the physical page: [ 29.787189] page:0000000064436702 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x15a0d [ 29.788029] memcg:ffff888009a67f01 [ 29.788350] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 29.788938] page_type: 0xffffffff() [ 29.789305] raw: 0100000000000200 ffff8880087a0c80 ffffea0000380740 dead000000000007 [ 29.790074] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888009a67f01 [ 29.790766] page dumped because: kasan: bad access detected [ 29.791430] [ 29.791595] Memory state around the buggy address: [ 29.792035] ffff888015a0d900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.792665] ffff888015a0d980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa [ 29.793296] >ffff888015a0da00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.794250] ^ [ 29.795477] ffff888015a0da80: fb fb fb fb fc fc fc fc fc fc fc fc 00 00 00 00 [ 29.796116] ffff888015a0db00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 29.796742] ================================================================== [ 29.797600] Disabling lock debugging due to kernel taint [ 31.646117] BUG: Bad rss-counter state mm:00000000d84c5712 type:MM_FILEPAGES val:33 [ 31.646846] BUG: Bad rss-counter state mm:00000000d84c5712 type:MM_ANONPAGES val:22 [ 32.035712] BUG: Bad rss-counter state mm:00000000dc130e58 type:MM_FILEPAGES val:33 [ 32.036424] BUG: Bad rss-counter state mm:00000000dc130e58 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:54792' (ECDSA) to the list of known hosts. 2023/06/21 08:23:31 fuzzer started 2023/06/21 08:23:31 dialing manager at localhost:36067 2023/06/21 08:23:31 checking machine... 2023/06/21 08:23:31 checking revisions... [ 32.627646] kmemleak: Automatic memory scanning thread ended 2023/06/21 08:23:31 testing simple program... [ 32.663311] cgroup: Unknown subsys name 'net' [ 32.704353] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 08:23:31 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000078 RCX=0000000000000000 RDX=ffff888009828000 RSI=0000000000000079 RDI=0000000000000082 RBP=0000000000000079 RSP=ffff888018ec77b8 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=00000000000b6a61 R12=000000000000000a R13=ffffffff87f99ea0 R14=0000000000000000 R15=0000000000000006 RIP=ffffffff814c0400 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 00007fe40fc54900 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=00007ffe2bd6d000 CR3=000000000ec4a000 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=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=00007fc0d09b12a0 CR3=000000001029a000 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=d17e5a5839e6249977477bcf8cd5c79d XMM02=000000000011a5f0eff9b2d0a8fce9cb XMM03=000000000011a6c02c67c8bc2e329bc3 XMM04=017cd0b3b82de3ca00000000000ae988 XMM05=dfcdbad4f1609c370000000000130e90 XMM06=a7fe0f07b0e4fb570000000000130068 XMM07=e042d86d42eb936e0000000000121380 XMM08=394215443d185843000000000011a6c0 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000