syzkaller login: [ 28.776858] BUG: Bad rss-counter state mm:0000000011506c57 type:MM_FILEPAGES val:33 [ 28.778327] BUG: Bad rss-counter state mm:0000000011506c57 type:MM_ANONPAGES val:22 [ 28.912525] ================================================================== [ 28.913502] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 28.914519] Read of size 8 at addr ffff88800d3ba4e0 by task sshd/222 [ 28.915474] [ 28.915711] CPU: 1 PID: 222 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 28.916634] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 28.917684] Call Trace: [ 28.918030] [ 28.918334] dump_stack_lvl+0x91/0xf0 [ 28.918857] print_report+0xcc/0x620 [ 28.919383] ? __virt_addr_valid+0x102/0x340 [ 28.919980] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.920639] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.921311] kasan_report+0xbe/0xf0 [ 28.921823] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.922494] vma_interval_tree_remove+0xc75/0xec0 [ 28.923145] vma_prepare+0xc54/0x11a0 [ 28.923684] __split_vma+0x5af/0x950 [ 28.924194] ? __pfx___split_vma+0x10/0x10 [ 28.924773] ? find_held_lock+0x2c/0x110 [ 28.925341] do_vmi_align_munmap+0x2ba/0x11f0 [ 28.925953] ? lock_is_held_type+0x9f/0x120 [ 28.926537] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 28.927196] ? mtree_range_walk+0x632/0x900 [ 28.927809] ? mas_walk+0x5c7/0x7c0 [ 28.928334] do_vmi_munmap+0x1f1/0x2b0 [ 28.928874] mmap_region+0x1f9/0x2660 [ 28.929408] ? vm_mmap_pgoff+0x15c/0x3a0 [ 28.929975] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 28.930769] ? __pfx_lock_acquire+0x10/0x10 [ 28.931366] ? __pfx_mmap_region+0x10/0x10 [ 28.931958] ? security_mmap_addr+0x7d/0xa0 [ 28.932547] ? get_unmapped_area+0x1f5/0x3f0 [ 28.933155] do_mmap+0x854/0xf00 [ 28.933642] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.934192] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 28.934811] ksys_mmap_pgoff+0x3af/0x500 [ 28.935394] do_syscall_64+0x3f/0x90 [ 28.935929] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.936660] RIP: 0033:0x7fe56ecc9d82 [ 28.937173] 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 [ 28.939579] RSP: 002b:00007ffd3355e388 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 28.940594] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fe56ecc9d82 [ 28.941541] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fe56e103000 [ 28.942495] RBP: 00007fe56e103000 R08: 0000000000000009 R09: 0000000000001000 [ 28.943470] R10: 0000000000000812 R11: 0000000000000206 R12: 000055719775ad90 [ 28.944430] R13: 00007ffd3355e3a0 R14: 00007ffd3355e3d0 R15: 00007ffd3355e730 [ 28.945398] [ 28.945727] [ 28.945970] Allocated by task 214: [ 28.946456] kasan_save_stack+0x22/0x50 [ 28.947025] kasan_set_track+0x25/0x30 [ 28.947602] __kasan_slab_alloc+0x59/0x70 [ 28.948196] kmem_cache_alloc+0x16b/0x370 [ 28.948781] vm_area_dup+0x20/0x160 [ 28.949292] __split_vma+0x170/0x950 [ 28.949819] split_vma+0xc6/0x110 [ 28.950327] mprotect_fixup+0x8d2/0xb30 [ 28.950907] do_mprotect_pkey+0x87e/0xd40 [ 28.951512] __x64_sys_mprotect+0x78/0xc0 [ 28.952111] do_syscall_64+0x3f/0x90 [ 28.952647] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.953384] [ 28.953628] Freed by task 214: [ 28.954074] kasan_save_stack+0x22/0x50 [ 28.954650] kasan_set_track+0x25/0x30 [ 28.955218] kasan_save_free_info+0x2b/0x50 [ 28.955833] __kasan_slab_free+0x10a/0x190 [ 28.956600] kmem_cache_free+0x10d/0x4d0 [ 28.957282] rcu_core+0x8c8/0x2860 [ 28.957872] __do_softirq+0x1b7/0x7d4 [ 28.958516] [ 28.958799] Last potentially related work creation: [ 28.959630] kasan_save_stack+0x22/0x50 [ 28.960299] __kasan_record_aux_stack+0x8e/0xa0 [ 28.961079] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.961937] remove_vma+0x139/0x170 [ 28.962539] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.963279] do_vmi_munmap+0x1f1/0x2b0 [ 28.963936] __vm_munmap+0x138/0x3a0 [ 28.964555] __x64_sys_munmap+0x59/0x80 [ 28.965223] do_syscall_64+0x3f/0x90 [ 28.965857] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.966719] [ 28.967009] The buggy address belongs to the object at ffff88800d3ba488 [ 28.967009] which belongs to the cache vm_area_struct of size 168 [ 28.969012] The buggy address is located 88 bytes inside of [ 28.969012] freed 168-byte region [ffff88800d3ba488, ffff88800d3ba530) [ 28.970913] [ 28.971206] The buggy address belongs to the physical page: [ 28.972080] page:00000000d280bce8 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd3ba [ 28.973151] memcg:ffff88800d7e1f01 [ 28.973576] flags: 0x100000000000200(slab|node=0|zone=1) [ 28.974215] page_type: 0xffffffff() [ 28.974660] raw: 0100000000000200 ffff8880087a0c80 ffffea0000359700 dead000000000004 [ 28.975581] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d7e1f01 [ 28.976488] page dumped because: kasan: bad access detected [ 28.977139] [ 28.977354] Memory state around the buggy address: [ 28.977936] ffff88800d3ba380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 28.978790] ffff88800d3ba400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 28.979657] >ffff88800d3ba480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.980530] ^ [ 28.981290] ffff88800d3ba500: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb [ 28.982156] ffff88800d3ba580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.983029] ================================================================== [ 28.983986] Disabling lock debugging due to kernel taint [ 31.391829] BUG: Bad rss-counter state mm:0000000056971a2a type:MM_FILEPAGES val:33 [ 31.392540] BUG: Bad rss-counter state mm:0000000056971a2a type:MM_ANONPAGES val:22 [ 31.901322] BUG: Bad rss-counter state mm:00000000890bd4bc type:MM_FILEPAGES val:33 [ 31.902561] BUG: Bad rss-counter state mm:00000000890bd4bc type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:29781' (ECDSA) to the list of known hosts. 2023/06/21 02:10:40 fuzzer started 2023/06/21 02:10:40 dialing manager at localhost:36067 2023/06/21 02:10:40 checking machine... 2023/06/21 02:10:40 checking revisions... [ 32.497921] kmemleak: Automatic memory scanning thread ended 2023/06/21 02:10:40 testing simple program... [ 32.539044] cgroup: Unknown subsys name 'net' [ 32.570987] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 02:10:39 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffffffff85d3e490 RCX=ffffffff81362d9b RDX=0000000000000000 RSI=0000000000000008 RDI=0000000000000246 RBP=0000000000000246 RSP=ffff88806ce09e50 R8 =0000000000000000 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=1ffff1100d9c7479 R12=ffffffff85616740 R13=0000000000000001 R14=0000000000000200 R15=0000000000000000 RIP=ffffffff8135f263 RFL=00000002 [-------] 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 00007f96372d3900 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=00007f9637888650 CR3=000000000e7ce000 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=0000000000000007 RBX=ffff88800e52b680 RCX=0000000000000000 RDX=0000000000000000 RSI=ffffffff814c8467 RDI=ffff88800e52ba74 RBP=ffff88800e52b680 RSP=ffff88801032f610 R8 =0000000000000000 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=00000000000b6a61 R12=00007f7b34ecbc64 R13=0000000000000000 R14=ffff88800e52b680 R15=0000000000000dc0 RIP=ffffffff8135bdf9 RFL=00000246 [---Z-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 00007f7b34612900 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=00007f7b33a941e0 CR3=000000000da8a000 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=ffffffffffffffffffffffffffffffff XMM01=30306234386136303638616663356134 XMM02=38303062343861363036386166633561 XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=220aca300e64b9c200000000000ae988 XMM05=b0438be5c083e22b0000000000132680 XMM06=00c3ffa147b8d8570000000000131470 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000