syzkaller login: [ 30.202244] BUG: Bad rss-counter state mm:000000000ff1bea8 type:MM_FILEPAGES val:33 [ 30.203751] BUG: Bad rss-counter state mm:000000000ff1bea8 type:MM_ANONPAGES val:22 [ 30.354120] ================================================================== [ 30.355249] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.356543] Read of size 8 at addr ffff88801653d6b0 by task sshd/220 [ 30.357464] [ 30.357726] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.358752] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.359917] Call Trace: [ 30.360261] [ 30.360568] dump_stack_lvl+0x91/0xf0 [ 30.361090] print_report+0xcc/0x620 [ 30.361608] ? __virt_addr_valid+0x102/0x340 [ 30.362193] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.362853] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.363474] kasan_report+0xbe/0xf0 [ 30.363968] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.364637] vma_interval_tree_remove+0xc75/0xec0 [ 30.365281] vma_prepare+0xc54/0x11a0 [ 30.365792] __split_vma+0x5af/0x950 [ 30.366296] ? __pfx___split_vma+0x10/0x10 [ 30.366868] ? find_held_lock+0x2c/0x110 [ 30.367439] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.368049] ? lock_is_held_type+0x9f/0x120 [ 30.368630] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.369247] ? mtree_range_walk+0x632/0x900 [ 30.369788] ? mas_walk+0x5c7/0x7c0 [ 30.370301] do_vmi_munmap+0x1f1/0x2b0 [ 30.370834] mmap_region+0x1f9/0x2660 [ 30.371379] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.371929] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.372694] ? __pfx_lock_acquire+0x10/0x10 [ 30.373235] ? __pfx_mmap_region+0x10/0x10 [ 30.373759] ? security_mmap_addr+0x7d/0xa0 [ 30.374332] ? get_unmapped_area+0x1f5/0x3f0 [ 30.374924] do_mmap+0x854/0xf00 [ 30.375409] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.375947] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.376560] ksys_mmap_pgoff+0x3af/0x500 [ 30.377087] do_syscall_64+0x3f/0x90 [ 30.377562] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.378239] RIP: 0033:0x7f1a7d223d82 [ 30.378726] 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 [ 30.381042] RSP: 002b:00007ffdb0d33518 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.382012] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f1a7d223d82 [ 30.382934] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f1a7c65d000 [ 30.383862] RBP: 00007f1a7c65d000 R08: 0000000000000009 R09: 0000000000001000 [ 30.384776] R10: 0000000000000812 R11: 0000000000000206 R12: 000055f2ce773ec0 [ 30.385700] R13: 00007ffdb0d33530 R14: 00007ffdb0d33560 R15: 00007ffdb0d338c0 [ 30.386627] [ 30.386942] [ 30.387164] Allocated by task 213: [ 30.387588] kasan_save_stack+0x22/0x50 [ 30.388113] kasan_set_track+0x25/0x30 [ 30.388652] __kasan_slab_alloc+0x59/0x70 [ 30.389220] kmem_cache_alloc+0x16b/0x370 [ 30.389792] vm_area_dup+0x20/0x160 [ 30.390282] __split_vma+0x170/0x950 [ 30.390797] split_vma+0xc6/0x110 [ 30.391262] mprotect_fixup+0x8d2/0xb30 [ 30.391755] do_mprotect_pkey+0x87e/0xd40 [ 30.392317] __x64_sys_mprotect+0x78/0xc0 [ 30.392885] do_syscall_64+0x3f/0x90 [ 30.393396] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.394099] [ 30.394331] Freed by task 213: [ 30.394762] kasan_save_stack+0x22/0x50 [ 30.395319] kasan_set_track+0x25/0x30 [ 30.395863] kasan_save_free_info+0x2b/0x50 [ 30.396442] __kasan_slab_free+0x10a/0x190 [ 30.397102] kmem_cache_free+0x10d/0x4d0 [ 30.397662] rcu_core+0x8c8/0x2860 [ 30.398146] __do_softirq+0x1b7/0x7d4 [ 30.398668] [ 30.398906] Last potentially related work creation: [ 30.399565] kasan_save_stack+0x22/0x50 [ 30.400116] __kasan_record_aux_stack+0x8e/0xa0 [ 30.400738] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.401472] remove_vma+0x139/0x170 [ 30.401978] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.402599] do_vmi_munmap+0x1f1/0x2b0 [ 30.403136] __vm_munmap+0x138/0x3a0 [ 30.403652] __x64_sys_munmap+0x59/0x80 [ 30.404201] do_syscall_64+0x3f/0x90 [ 30.404724] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.405431] [ 30.405673] The buggy address belongs to the object at ffff88801653d658 [ 30.405673] which belongs to the cache vm_area_struct of size 168 [ 30.407281] The buggy address is located 88 bytes inside of [ 30.407281] freed 168-byte region [ffff88801653d658, ffff88801653d700) [ 30.408759] [ 30.408997] The buggy address belongs to the physical page: [ 30.409728] page:0000000085c9770e refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1653d [ 30.410931] memcg:ffff88800d8a2a01 [ 30.411411] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.412122] page_type: 0xffffffff() [ 30.412621] raw: 0100000000000200 ffff8880087a0c80 ffffea000050cf40 dead000000000002 [ 30.413629] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d8a2a01 [ 30.414551] page dumped because: kasan: bad access detected [ 30.415249] [ 30.415488] Memory state around the buggy address: [ 30.416135] ffff88801653d580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.417083] ffff88801653d600: fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb [ 30.418040] >ffff88801653d680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.418996] ^ [ 30.419646] ffff88801653d700: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 [ 30.420581] ffff88801653d780: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc [ 30.421521] ================================================================== [ 30.422605] Disabling lock debugging due to kernel taint [ 33.101746] BUG: Bad rss-counter state mm:00000000d1da54e7 type:MM_FILEPAGES val:33 [ 33.102910] BUG: Bad rss-counter state mm:00000000d1da54e7 type:MM_ANONPAGES val:22 [ 33.533521] BUG: Bad rss-counter state mm:00000000f47c2500 type:MM_FILEPAGES val:33 [ 33.534703] BUG: Bad rss-counter state mm:00000000f47c2500 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:53918' (ECDSA) to the list of known hosts. 2023/06/21 03:12:23 fuzzer started 2023/06/21 03:12:23 dialing manager at localhost:36067 2023/06/21 03:12:23 checking machine... 2023/06/21 03:12:23 checking revisions... [ 34.187341] kmemleak: Automatic memory scanning thread ended 2023/06/21 03:12:24 testing simple program... [ 34.240976] cgroup: Unknown subsys name 'net' [ 34.278809] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 03:12:23 Registers: info registers vcpu 0 RAX=1ffffffff0bbfcbe RBX=ffffffff85dfe5f0 RCX=ffffffff8180f5ba RDX=0000000000000000 RSI=ffffffff8613971a RDI=ffffffff85dfe5d0 RBP=ffffffff85dfe5f0 RSP=ffff888008d9f8a0 R8 =ffffffff8613971a R9 =ffff888008d9f998 R10=0000000000038001 R11=0000000000020f03 R12=ffffffff85dfe5f0 R13=ffffffff85dfe5d0 R14=ffffffff85dfe5ec R15=dffffc0000000000 RIP=ffffffff8112fc7f RFL=00000216 [----AP-] 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 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=00007fc21a476650 CR3=0000000017c2a000 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=ffffed100d9e72a0 RBX=ffff88806cf39500 RCX=ffffffff812e0126 RDX=0000000000000001 RSI=0000000000000004 RDI=ffff88806cf39500 RBP=ffffed100d9e72a0 RSP=ffff888008da7a50 R8 =0000000000000001 R9 =ffffed100d9e72a0 R10=ffff88806cf39503 R11=0000000000000003 R12=ffff88806cf39508 R13=ffff88806cf39510 R14=ffff888008da7c98 R15=ffff888008da7dc0 RIP=ffffffff8180f09a RFL=00000086 [--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=00007fd752291820 CR3=000000000c7a4000 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=477814ff7f0ef78a664d202df1a8e505 XMM02=000000000011d748eff9b2d0a8fce9cb XMM03=000000000011d8182c67c8bc2e329bc3 XMM04=63e0961a03df004c00000000000ae988 XMM05=363a7b8782d7677d0000000000132f60 XMM06=587e8d3b31aa82520000000000131d00 XMM07=fb795ef6d65770560000000000121f58 XMM08=2c67c8bc2e329bc3000000000011d7b8 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000