syzkaller login: [ 38.704259] BUG: Bad rss-counter state mm:0000000019ab5a23 type:MM_FILEPAGES val:33 [ 38.705659] BUG: Bad rss-counter state mm:0000000019ab5a23 type:MM_ANONPAGES val:22 [ 38.850607] ================================================================== [ 38.851548] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 38.852494] Read of size 8 at addr ffff8880103f25c8 by task sshd/219 [ 38.853256] [ 38.853471] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 38.854483] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 38.855496] Call Trace: [ 38.855815] [ 38.856106] dump_stack_lvl+0x91/0xf0 [ 38.856623] print_report+0xcc/0x620 [ 38.857119] ? __virt_addr_valid+0x102/0x340 [ 38.857671] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.858299] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.858921] kasan_report+0xbe/0xf0 [ 38.859412] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.860033] vma_interval_tree_remove+0xc75/0xec0 [ 38.860634] vma_prepare+0xc54/0x11a0 [ 38.861107] __split_vma+0x5af/0x950 [ 38.861584] ? __pfx___split_vma+0x10/0x10 [ 38.862108] ? find_held_lock+0x2c/0x110 [ 38.862635] do_vmi_align_munmap+0x2ba/0x11f0 [ 38.863197] ? lock_is_held_type+0x9f/0x120 [ 38.863751] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 38.864361] ? mtree_range_walk+0x632/0x900 [ 38.864915] ? mas_walk+0x5c7/0x7c0 [ 38.865391] do_vmi_munmap+0x1f1/0x2b0 [ 38.865886] mmap_region+0x1f9/0x2660 [ 38.866366] ? vm_mmap_pgoff+0x15c/0x3a0 [ 38.866875] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 38.867590] ? __pfx_lock_acquire+0x10/0x10 [ 38.868120] ? __pfx_mmap_region+0x10/0x10 [ 38.868642] ? security_mmap_addr+0x7d/0xa0 [ 38.869172] ? get_unmapped_area+0x1f5/0x3f0 [ 38.869720] do_mmap+0x854/0xf00 [ 38.870155] vm_mmap_pgoff+0x1a6/0x3a0 [ 38.870657] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 38.871213] ksys_mmap_pgoff+0x3af/0x500 [ 38.871737] do_syscall_64+0x3f/0x90 [ 38.872218] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.872861] RIP: 0033:0x7fb724837d82 [ 38.873325] 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 [ 38.875434] RSP: 002b:00007ffcdd080e08 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 38.876328] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fb724837d82 [ 38.877167] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fb723c71000 [ 38.878004] RBP: 00007fb723c71000 R08: 0000000000000009 R09: 0000000000001000 [ 38.878844] R10: 0000000000000812 R11: 0000000000000206 R12: 000055c90e49fec0 [ 38.879701] R13: 00007ffcdd080e20 R14: 00007ffcdd080e50 R15: 00007ffcdd0811b0 [ 38.880545] [ 38.880836] [ 38.881050] Allocated by task 212: [ 38.881479] kasan_save_stack+0x22/0x50 [ 38.881980] kasan_set_track+0x25/0x30 [ 38.882474] __kasan_slab_alloc+0x59/0x70 [ 38.882989] kmem_cache_alloc+0x16b/0x370 [ 38.883526] vm_area_dup+0x20/0x160 [ 38.883983] __split_vma+0x170/0x950 [ 38.884448] split_vma+0xc6/0x110 [ 38.884884] mprotect_fixup+0x8d2/0xb30 [ 38.885384] do_mprotect_pkey+0x87e/0xd40 [ 38.885903] __x64_sys_mprotect+0x78/0xc0 [ 38.886417] do_syscall_64+0x3f/0x90 [ 38.886891] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.887533] [ 38.887747] Freed by task 212: [ 38.888139] kasan_save_stack+0x22/0x50 [ 38.888640] kasan_set_track+0x25/0x30 [ 38.889133] kasan_save_free_info+0x2b/0x50 [ 38.889667] __kasan_slab_free+0x10a/0x190 [ 38.890196] kmem_cache_free+0x10d/0x4d0 [ 38.890706] rcu_core+0x8c8/0x2860 [ 38.891147] __do_softirq+0x1b7/0x7d4 [ 38.891642] [ 38.891857] Last potentially related work creation: [ 38.892448] kasan_save_stack+0x22/0x50 [ 38.892956] __kasan_record_aux_stack+0x8e/0xa0 [ 38.893522] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.894159] remove_vma+0x139/0x170 [ 38.894611] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.895165] do_vmi_munmap+0x1f1/0x2b0 [ 38.895727] __vm_munmap+0x138/0x3a0 [ 38.896192] __x64_sys_munmap+0x59/0x80 [ 38.896691] do_syscall_64+0x3f/0x90 [ 38.897166] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.897844] [ 38.898080] The buggy address belongs to the object at ffff8880103f2570 [ 38.898080] which belongs to the cache vm_area_struct of size 168 [ 38.899665] The buggy address is located 88 bytes inside of [ 38.899665] freed 168-byte region [ffff8880103f2570, ffff8880103f2618) [ 38.901074] [ 38.901288] The buggy address belongs to the physical page: [ 38.901952] page:00000000c02708e6 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103f2 [ 38.903039] memcg:ffff88801828a401 [ 38.903468] flags: 0x100000000000200(slab|node=0|zone=1) [ 38.904111] page_type: 0xffffffff() [ 38.904562] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 38.905490] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801828a401 [ 38.906405] page dumped because: kasan: bad access detected [ 38.907059] [ 38.907274] Memory state around the buggy address: [ 38.907870] ffff8880103f2480: fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 38.908716] ffff8880103f2500: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb [ 38.909567] >ffff8880103f2580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.910428] ^ [ 38.911086] ffff8880103f2600: fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb [ 38.911965] ffff8880103f2680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.912819] ================================================================== [ 38.913828] Disabling lock debugging due to kernel taint [ 41.410526] BUG: Bad rss-counter state mm:0000000068965ccc type:MM_FILEPAGES val:33 [ 41.411494] BUG: Bad rss-counter state mm:0000000068965ccc type:MM_ANONPAGES val:22 [ 41.882392] BUG: Bad rss-counter state mm:00000000e9418465 type:MM_FILEPAGES val:33 [ 41.883412] BUG: Bad rss-counter state mm:00000000e9418465 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:23460' (ECDSA) to the list of known hosts. 2023/06/20 18:11:54 fuzzer started 2023/06/20 18:11:54 dialing manager at localhost:36067 2023/06/20 18:11:54 checking machine... 2023/06/20 18:11:54 checking revisions... [ 42.591549] kmemleak: Automatic memory scanning thread ended 2023/06/20 18:11:55 testing simple program... [ 42.638414] cgroup: Unknown subsys name 'net' [ 42.676433] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 18:11:54 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=00007f4a57f7f19d RCX=1ffffffff0ba7530 RDX=0000000000000000 RSI=ffffffff81007b90 RDI=0000000000000007 RBP=00007f4a57f7f19d RSP=ffff8880147cf540 R8 =0000000000000007 R9 =ffffffffff600000 R10=00007f4a57f7f000 R11=00000000000b6a61 R12=ffff8880147cf648 R13=0000000000000000 R14=ffff88800f499b40 R15=ffff88800c46cf00 RIP=ffffffff811fc7b1 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 00007f4a576b5900 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=00007fa998ac9650 CR3=000000000d99e000 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=836e4e9f3cb81fb0f84adc1ead9be6c6 XMM02=ec2efd57dc4c00df000000000011afc8 XMM03=5ed1ab08192117c5000000000011b098 XMM04=73b8e091a0bd921700000000000ae988 XMM05=f9c1e528e509651600000000001330b8 XMM06=dfcdbad4f1609c3700000000001315a0 XMM07=fb795ef6d657705600000000001219f8 XMM08=2c67c8bc2e329bc3000000000011b038 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=ffff88800f17bd10 RCX=ffff88800f17bd10 RDX=00000000800d0005 RSI=ffff88800f17bd10 RDI=ffff88800844f780 RBP=ffff88801598fc88 RSP=ffff88801598fbf0 R8 =00000000800d0004 R9 =0000000000000000 R10=ffffea00003c5ec0 R11=00000000800d0005 R12=ffffea00003c5ec0 R13=ffff88800f17be40 R14=00000000800d0004 R15=ffff88800844f780 RIP=ffffffff81809672 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 00007fa998514900 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=00007fa998acb618 CR3=0000000019f62000 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=6e69676f6c5f6d61702c78756e696c65 XMM02=755f6d61702c74696d7265705f6d6170 XMM03=2c766e655f6d61702c7374696d696c5f XMM04=6d61702c766e655f6d61702c7374696d XMM05=78696e755f6d61702c74696d7265705f XMM06=6469756e69676f6c5f6d61702c78756e XMM07=672065736f6c635f6e6f69737365733a XMM08=61662029286e65706f5f746964756100 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000