syzkaller login: [ 30.528407] BUG: Bad rss-counter state mm:0000000012ad4153 type:MM_FILEPAGES val:33 [ 30.529622] BUG: Bad rss-counter state mm:0000000012ad4153 type:MM_ANONPAGES val:22 [ 30.692999] ================================================================== [ 30.694112] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.695057] Read of size 8 at addr ffff88800ec156b0 by task sshd/219 [ 30.695907] [ 30.696125] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.696971] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.697947] Call Trace: [ 30.698275] [ 30.698555] dump_stack_lvl+0x91/0xf0 [ 30.699043] print_report+0xcc/0x620 [ 30.699522] ? __virt_addr_valid+0x102/0x340 [ 30.700067] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.700675] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.701283] kasan_report+0xbe/0xf0 [ 30.701767] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.702398] vma_interval_tree_remove+0xc75/0xec0 [ 30.702988] vma_prepare+0xc54/0x11a0 [ 30.703465] __split_vma+0x5af/0x950 [ 30.703934] ? __pfx___split_vma+0x10/0x10 [ 30.704458] ? find_held_lock+0x2c/0x110 [ 30.704968] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.705526] ? lock_is_held_type+0x9f/0x120 [ 30.706076] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.706674] ? mtree_range_walk+0x632/0x900 [ 30.707223] ? mas_walk+0x5c7/0x7c0 [ 30.707698] do_vmi_munmap+0x1f1/0x2b0 [ 30.708181] mmap_region+0x1f9/0x2660 [ 30.708654] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.709156] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.709862] ? __pfx_lock_acquire+0x10/0x10 [ 30.710405] ? __pfx_mmap_region+0x10/0x10 [ 30.710933] ? security_mmap_addr+0x7d/0xa0 [ 30.711462] ? get_unmapped_area+0x1f5/0x3f0 [ 30.712001] do_mmap+0x854/0xf00 [ 30.712447] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.712932] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.713486] ksys_mmap_pgoff+0x3af/0x500 [ 30.714004] do_syscall_64+0x3f/0x90 [ 30.714484] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.715127] RIP: 0033:0x7f4cc8481d82 [ 30.715583] 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 [ 30.717693] RSP: 002b:00007fffdfdb1b98 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.718607] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f4cc8481d82 [ 30.719453] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f4cc78bb000 [ 30.720296] RBP: 00007f4cc78bb000 R08: 0000000000000009 R09: 0000000000001000 [ 30.721129] R10: 0000000000000812 R11: 0000000000000206 R12: 0000556c3eb65ec0 [ 30.721968] R13: 00007fffdfdb1bb0 R14: 00007fffdfdb1be0 R15: 00007fffdfdb1f40 [ 30.722837] [ 30.723128] [ 30.723348] Allocated by task 212: [ 30.723769] kasan_save_stack+0x22/0x50 [ 30.724273] kasan_set_track+0x25/0x30 [ 30.724761] __kasan_slab_alloc+0x59/0x70 [ 30.725282] kmem_cache_alloc+0x16b/0x370 [ 30.725796] vm_area_dup+0x20/0x160 [ 30.726266] __split_vma+0x170/0x950 [ 30.726728] split_vma+0xc6/0x110 [ 30.727168] mprotect_fixup+0x8d2/0xb30 [ 30.727669] do_mprotect_pkey+0x87e/0xd40 [ 30.728185] __x64_sys_mprotect+0x78/0xc0 [ 30.728699] do_syscall_64+0x3f/0x90 [ 30.729171] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.729810] [ 30.730032] Freed by task 212: [ 30.730425] kasan_save_stack+0x22/0x50 [ 30.730927] kasan_set_track+0x25/0x30 [ 30.731419] kasan_save_free_info+0x2b/0x50 [ 30.731947] __kasan_slab_free+0x10a/0x190 [ 30.732479] kmem_cache_free+0x10d/0x4d0 [ 30.732983] rcu_core+0x8c8/0x2860 [ 30.733421] __do_softirq+0x1b7/0x7d4 [ 30.733898] [ 30.734129] Last potentially related work creation: [ 30.734721] kasan_save_stack+0x22/0x50 [ 30.735222] __kasan_record_aux_stack+0x8e/0xa0 [ 30.735798] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.736432] remove_vma+0x139/0x170 [ 30.736890] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.737447] do_vmi_munmap+0x1f1/0x2b0 [ 30.737924] __vm_munmap+0x138/0x3a0 [ 30.738407] __x64_sys_munmap+0x59/0x80 [ 30.738899] do_syscall_64+0x3f/0x90 [ 30.739375] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.740015] [ 30.740230] Second to last potentially related work creation: [ 30.740910] kasan_save_stack+0x22/0x50 [ 30.741422] __kasan_record_aux_stack+0x8e/0xa0 [ 30.742002] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.742642] remove_vma+0x139/0x170 [ 30.743089] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.743646] do_vmi_munmap+0x1f1/0x2b0 [ 30.744129] mmap_region+0x1f9/0x2660 [ 30.744601] do_mmap+0x854/0xf00 [ 30.745034] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.745521] ksys_mmap_pgoff+0x3af/0x500 [ 30.746036] do_syscall_64+0x3f/0x90 [ 30.746514] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.747154] [ 30.747370] The buggy address belongs to the object at ffff88800ec15658 [ 30.747370] which belongs to the cache vm_area_struct of size 168 [ 30.748809] The buggy address is located 88 bytes inside of [ 30.748809] freed 168-byte region [ffff88800ec15658, ffff88800ec15700) [ 30.750210] [ 30.750427] The buggy address belongs to the physical page: [ 30.751081] page:0000000093291b54 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xec15 [ 30.752166] memcg:ffff88800e860501 [ 30.752593] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.753233] page_type: 0xffffffff() [ 30.753688] raw: 0100000000000200 ffff8880087a0c80 ffffea000061b900 dead000000000008 [ 30.754618] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e860501 [ 30.755520] page dumped because: kasan: bad access detected [ 30.756174] [ 30.756391] Memory state around the buggy address: [ 30.756968] ffff88800ec15580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.757824] ffff88800ec15600: fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb [ 30.758673] >ffff88800ec15680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.759511] ^ [ 30.760087] ffff88800ec15700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 30.760933] ffff88800ec15780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 30.761775] ================================================================== [ 30.762788] Disabling lock debugging due to kernel taint [ 32.898171] BUG: Bad rss-counter state mm:00000000fd408541 type:MM_FILEPAGES val:33 [ 32.899350] BUG: Bad rss-counter state mm:00000000fd408541 type:MM_ANONPAGES val:22 [ 33.377739] BUG: Bad rss-counter state mm:000000001e6c2ca4 type:MM_FILEPAGES val:33 [ 33.379280] BUG: Bad rss-counter state mm:000000001e6c2ca4 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:3545' (ECDSA) to the list of known hosts. 2023/06/21 05:41:33 fuzzer started 2023/06/21 05:41:33 dialing manager at localhost:36067 2023/06/21 05:41:33 checking machine... 2023/06/21 05:41:33 checking revisions... [ 34.130798] kmemleak: Automatic memory scanning thread ended 2023/06/21 05:41:33 testing simple program... [ 34.177523] cgroup: Unknown subsys name 'net' [ 34.217945] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 05:41:33 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000001 RCX=0000000000000001 RDX=ffff888008d9ff01 RSI=ffff888008d9ff28 RDI=ffff888008d9ff28 RBP=ffff888008d9f9d0 RSP=ffff888008d9f908 R8 =0000000000000001 R9 =ffff888008d9f9b8 R10=0000000000038001 R11=0000000000009bf7 R12=ffff888008d9f9d8 R13=ffff888008d9f9c0 R14=ffff888008d9ff28 R15=ffff888008d9f978 RIP=ffffffff81131236 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 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=00007f116c2c07e0 CR3=000000000ef2e000 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=ffffffffffffffffffffffffffffffff XMM01=30306234386136303638616663356134 XMM02=38303062343861363036386166633561 XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=652bcb514dbf7c4d00000000000ae988 XMM05=d646cd78e7842ef40000000000133680 XMM06=dfcdbad4f1609c370000000000132518 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=dffffc0000000000 RBX=ffffffff8118ddc3 RCX=0000000000000001 RDX=1ffff1100d9e135e RSI=ffff88806cf09fb8 RDI=ffffffff8118ddc3 RBP=ffffffff8118ddc3 RSP=ffff88806cf09a48 R8 =0000000000000001 R9 =ffff88806cf09ad8 R10=0000000000038001 R11=00000000000b5d59 R12=0000000000000001 R13=0000000000000000 R14=ffff888016433680 R15=ffff88800d73eec0 RIP=ffffffff811fc772 RFL=00000287 [--S--PC] 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 00007f4e7f180900 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=00007ffc17040000 CR3=0000000009a30000 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