syzkaller login: [ 30.690567] BUG: Bad rss-counter state mm:0000000084bea8e0 type:MM_FILEPAGES val:33 [ 30.691803] BUG: Bad rss-counter state mm:0000000084bea8e0 type:MM_ANONPAGES val:22 [ 30.837595] ================================================================== [ 30.838673] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.839808] Read of size 8 at addr ffff88800e2a8058 by task sshd/220 [ 30.840714] [ 30.841065] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.842112] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.843275] Call Trace: [ 30.843670] [ 30.844005] dump_stack_lvl+0x91/0xf0 [ 30.844585] print_report+0xcc/0x620 [ 30.845154] ? __virt_addr_valid+0x102/0x340 [ 30.845810] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.846540] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.847280] kasan_report+0xbe/0xf0 [ 30.847890] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.848565] vma_interval_tree_remove+0xc75/0xec0 [ 30.849165] vma_prepare+0xc54/0x11a0 [ 30.849648] __split_vma+0x5af/0x950 [ 30.850129] ? __pfx___split_vma+0x10/0x10 [ 30.850666] ? find_held_lock+0x2c/0x110 [ 30.851191] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.851759] ? lock_is_held_type+0x9f/0x120 [ 30.852325] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.852931] ? mtree_range_walk+0x632/0x900 [ 30.853503] ? mas_walk+0x5c7/0x7c0 [ 30.853990] do_vmi_munmap+0x1f1/0x2b0 [ 30.854479] mmap_region+0x1f9/0x2660 [ 30.854969] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.855482] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.856206] ? __pfx_lock_acquire+0x10/0x10 [ 30.856739] ? __pfx_mmap_region+0x10/0x10 [ 30.857277] ? security_mmap_addr+0x7d/0xa0 [ 30.857811] ? get_unmapped_area+0x1f5/0x3f0 [ 30.858372] do_mmap+0x854/0xf00 [ 30.858810] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.859306] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.859901] ksys_mmap_pgoff+0x3af/0x500 [ 30.860406] do_syscall_64+0x3f/0x90 [ 30.860883] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.861536] RIP: 0033:0x7fd6ac82fd82 [ 30.861998] 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 [ 30.864128] RSP: 002b:00007ffdc5a6be58 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.865049] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fd6ac82fd82 [ 30.865898] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fd6abc69000 [ 30.866748] RBP: 00007fd6abc69000 R08: 0000000000000009 R09: 0000000000001000 [ 30.867600] R10: 0000000000000812 R11: 0000000000000206 R12: 00005555ab7a4f70 [ 30.868449] R13: 00007ffdc5a6be70 R14: 00007ffdc5a6bea0 R15: 00007ffdc5a6c200 [ 30.869308] [ 30.869598] [ 30.869812] Allocated by task 213: [ 30.870237] kasan_save_stack+0x22/0x50 [ 30.870759] kasan_set_track+0x25/0x30 [ 30.871283] __kasan_slab_alloc+0x59/0x70 [ 30.871861] kmem_cache_alloc+0x16b/0x370 [ 30.872407] vm_area_dup+0x20/0x160 [ 30.872878] __split_vma+0x170/0x950 [ 30.873364] split_vma+0xc6/0x110 [ 30.873827] mprotect_fixup+0x8d2/0xb30 [ 30.874357] do_mprotect_pkey+0x87e/0xd40 [ 30.874905] __x64_sys_mprotect+0x78/0xc0 [ 30.875451] do_syscall_64+0x3f/0x90 [ 30.875943] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.876620] [ 30.876847] Freed by task 213: [ 30.877253] kasan_save_stack+0x22/0x50 [ 30.877780] kasan_set_track+0x25/0x30 [ 30.878300] kasan_save_free_info+0x2b/0x50 [ 30.878861] __kasan_slab_free+0x10a/0x190 [ 30.879417] kmem_cache_free+0x10d/0x4d0 [ 30.879958] rcu_core+0x8c8/0x2860 [ 30.880433] __do_softirq+0x1b7/0x7d4 [ 30.880940] [ 30.881163] Last potentially related work creation: [ 30.881775] kasan_save_stack+0x22/0x50 [ 30.882307] __kasan_record_aux_stack+0x8e/0xa0 [ 30.882962] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.883651] remove_vma+0x139/0x170 [ 30.884122] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.884713] do_vmi_munmap+0x1f1/0x2b0 [ 30.885219] __vm_munmap+0x138/0x3a0 [ 30.885712] __x64_sys_munmap+0x59/0x80 [ 30.886230] do_syscall_64+0x3f/0x90 [ 30.886717] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.887402] [ 30.887627] Second to last potentially related work creation: [ 30.888349] kasan_save_stack+0x22/0x50 [ 30.888872] __kasan_record_aux_stack+0x8e/0xa0 [ 30.889461] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.890142] remove_vma+0x139/0x170 [ 30.890614] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.891206] do_vmi_munmap+0x1f1/0x2b0 [ 30.891733] mmap_region+0x1f9/0x2660 [ 30.892241] do_mmap+0x854/0xf00 [ 30.892699] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.893211] ksys_mmap_pgoff+0x3af/0x500 [ 30.893735] do_syscall_64+0x3f/0x90 [ 30.894229] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.894906] [ 30.895132] The buggy address belongs to the object at ffff88800e2a8000 [ 30.895132] which belongs to the cache vm_area_struct of size 168 [ 30.896694] The buggy address is located 88 bytes inside of [ 30.896694] freed 168-byte region [ffff88800e2a8000, ffff88800e2a80a8) [ 30.898180] [ 30.898403] The buggy address belongs to the physical page: [ 30.899091] page:00000000fb8c0505 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe2a8 [ 30.900250] memcg:ffff88800d633a01 [ 30.900696] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.901383] page_type: 0xffffffff() [ 30.901860] raw: 0100000000000200 ffff8880087a0c80 ffffea000036aa40 dead000000000004 [ 30.902838] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d633a01 [ 30.903797] page dumped because: kasan: bad access detected [ 30.904496] [ 30.904716] Memory state around the buggy address: [ 30.905313] ffff88800e2a7f00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc [ 30.906223] ffff88800e2a7f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.907124] >ffff88800e2a8000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.908031] ^ [ 30.908795] ffff88800e2a8080: fb fb fb fb fb fc fc fc fc fc fc fc fc 00 00 00 [ 30.909695] ffff88800e2a8100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.910591] ================================================================== [ 30.911555] Disabling lock debugging due to kernel taint [ 33.393714] BUG: Bad rss-counter state mm:0000000068764f05 type:MM_FILEPAGES val:33 [ 33.394439] BUG: Bad rss-counter state mm:0000000068764f05 type:MM_ANONPAGES val:22 [ 33.846294] BUG: Bad rss-counter state mm:000000009fde1f3c type:MM_FILEPAGES val:33 [ 33.847348] BUG: Bad rss-counter state mm:000000009fde1f3c type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:27363' (ECDSA) to the list of known hosts. 2023/06/20 18:06:04 fuzzer started 2023/06/20 18:06:04 dialing manager at localhost:36067 2023/06/20 18:06:04 checking machine... 2023/06/20 18:06:04 checking revisions... [ 34.614591] kmemleak: Automatic memory scanning thread ended 2023/06/20 18:06:04 testing simple program... [ 34.666576] cgroup: Unknown subsys name 'net' [ 34.707163] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 18:06:04 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=00007fbca971a998 CR3=000000000caf4000 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=802f32ba77e8dbb0bd471112f2db0689 XMM02=ec2efd57dc4c00df000000000011b440 XMM03=6267a4374a8fb589000000000011b510 XMM04=d207f87b16c63ea600000000000ae988 XMM05=19e9129bd510f2350000000000133458 XMM06=31ba4601058ef2d200000000001322c0 XMM07=e042d86d42eb936e0000000000122510 XMM08=6267a4374a8fb589000000000011b510 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=00000000000b5080 RBX=0000000000000001 RCX=ffffffff8450cc7e RDX=00000000000b508d RSI=00000000000350cc RDI=ffffffff864b2056 RBP=ffff88800edff930 RSP=ffff88800edff868 R8 =ffffffff864b2008 R9 =ffff88800edff918 R10=0000000000038001 R11=00000000000b5080 R12=ffff88800edff938 R13=ffff88800edff920 R14=ffff88800edff919 R15=ffff88800edff8d8 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 00007f7f514c0900 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=00007ffc72cc0000 CR3=000000000e6ce000 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