syzkaller login: [ 25.360085] BUG: Bad rss-counter state mm:0000000014eae3c7 type:MM_FILEPAGES val:33 [ 25.361176] BUG: Bad rss-counter state mm:0000000014eae3c7 type:MM_ANONPAGES val:22 [ 25.491394] ================================================================== [ 25.492045] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 25.492716] Read of size 8 at addr ffff88800d8f7310 by task sshd/219 [ 25.493256] [ 25.493413] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 25.494032] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 25.494718] Call Trace: [ 25.494944] [ 25.495254] dump_stack_lvl+0x91/0xf0 [ 25.495606] print_report+0xcc/0x620 [ 25.495946] ? __virt_addr_valid+0x102/0x340 [ 25.496336] ? vma_interval_tree_remove+0xc75/0xec0 [ 25.496768] ? vma_interval_tree_remove+0xc75/0xec0 [ 25.497200] kasan_report+0xbe/0xf0 [ 25.497852] ? vma_interval_tree_remove+0xc75/0xec0 [ 25.498651] vma_interval_tree_remove+0xc75/0xec0 [ 25.499427] vma_prepare+0xc54/0x11a0 [ 25.500039] __split_vma+0x5af/0x950 [ 25.500647] ? __pfx___split_vma+0x10/0x10 [ 25.501333] ? find_held_lock+0x2c/0x110 [ 25.502025] do_vmi_align_munmap+0x2ba/0x11f0 [ 25.502757] ? lock_is_held_type+0x9f/0x120 [ 25.503503] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 25.504343] ? mtree_range_walk+0x632/0x900 [ 25.505115] ? mas_walk+0x5c7/0x7c0 [ 25.505791] do_vmi_munmap+0x1f1/0x2b0 [ 25.506475] mmap_region+0x1f9/0x2660 [ 25.507006] ? vm_mmap_pgoff+0x15c/0x3a0 [ 25.507571] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 25.508346] ? __pfx_lock_acquire+0x10/0x10 [ 25.508934] ? __pfx_mmap_region+0x10/0x10 [ 25.509512] ? security_mmap_addr+0x7d/0xa0 [ 25.510101] ? get_unmapped_area+0x1f5/0x3f0 [ 25.510714] do_mmap+0x854/0xf00 [ 25.511197] vm_mmap_pgoff+0x1a6/0x3a0 [ 25.511748] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 25.512360] ksys_mmap_pgoff+0x3af/0x500 [ 25.512911] do_syscall_64+0x3f/0x90 [ 25.513442] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 25.514178] RIP: 0033:0x7f12f3447d82 [ 25.514684] 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 [ 25.517037] RSP: 002b:00007ffe1364f308 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 25.518107] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f12f3447d82 [ 25.519068] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f12f2881000 [ 25.520008] RBP: 00007f12f2881000 R08: 0000000000000009 R09: 0000000000001000 [ 25.520945] R10: 0000000000000812 R11: 0000000000000206 R12: 0000562ea9908b20 [ 25.521896] R13: 00007ffe1364f320 R14: 00007ffe1364f350 R15: 00007ffe1364f6b0 [ 25.522849] [ 25.523173] [ 25.523410] Allocated by task 212: [ 25.523887] kasan_save_stack+0x22/0x50 [ 25.524450] kasan_set_track+0x25/0x30 [ 25.525001] __kasan_slab_alloc+0x59/0x70 [ 25.525585] kmem_cache_alloc+0x16b/0x370 [ 25.526182] vm_area_dup+0x20/0x160 [ 25.526687] __split_vma+0x170/0x950 [ 25.527212] split_vma+0xc6/0x110 [ 25.527700] mprotect_fixup+0x8d2/0xb30 [ 25.528258] do_mprotect_pkey+0x87e/0xd40 [ 25.528836] __x64_sys_mprotect+0x78/0xc0 [ 25.529419] do_syscall_64+0x3f/0x90 [ 25.529958] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 25.530670] [ 25.530908] Freed by task 212: [ 25.531349] kasan_save_stack+0x22/0x50 [ 25.531911] kasan_set_track+0x25/0x30 [ 25.532458] kasan_save_free_info+0x2b/0x50 [ 25.533049] __kasan_slab_free+0x10a/0x190 [ 25.533646] kmem_cache_free+0x10d/0x4d0 [ 25.534206] rcu_core+0x8c8/0x2860 [ 25.534697] __do_softirq+0x1b7/0x7d4 [ 25.535223] [ 25.535461] Last potentially related work creation: [ 25.536104] kasan_save_stack+0x22/0x50 [ 25.536664] __kasan_record_aux_stack+0x8e/0xa0 [ 25.537302] __call_rcu_common.constprop.0+0x6a/0xb90 [ 25.538034] remove_vma+0x139/0x170 [ 25.538535] do_vmi_align_munmap+0xd4a/0x11f0 [ 25.539154] do_vmi_munmap+0x1f1/0x2b0 [ 25.539692] __vm_munmap+0x138/0x3a0 [ 25.540219] __x64_sys_munmap+0x59/0x80 [ 25.540773] do_syscall_64+0x3f/0x90 [ 25.541296] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 25.542012] [ 25.542257] The buggy address belongs to the object at ffff88800d8f72b8 [ 25.542257] which belongs to the cache vm_area_struct of size 168 [ 25.543877] The buggy address is located 88 bytes inside of [ 25.543877] freed 168-byte region [ffff88800d8f72b8, ffff88800d8f7360) [ 25.545432] [ 25.545678] The buggy address belongs to the physical page: [ 25.546410] page:0000000034d62ccb refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd8f7 [ 25.547620] memcg:ffff88800e355a01 [ 25.548090] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 25.548865] page_type: 0xffffffff() [ 25.549370] raw: 0100000000000200 ffff88800879fc80 ffffea0000382d80 dead000000000003 [ 25.550417] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e355a01 [ 25.551431] page dumped because: kasan: bad access detected [ 25.552173] [ 25.552417] Memory state around the buggy address: [ 25.553069] ffff88800d8f7200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 25.554041] ffff88800d8f7280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ 25.555003] >ffff88800d8f7300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 25.555957] ^ [ 25.556482] ffff88800d8f7380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 25.557439] ffff88800d8f7400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 25.558411] ================================================================== [ 25.559497] Disabling lock debugging due to kernel taint [ 27.484802] BUG: Bad rss-counter state mm:00000000ce6fff29 type:MM_FILEPAGES val:33 [ 27.485702] BUG: Bad rss-counter state mm:00000000ce6fff29 type:MM_ANONPAGES val:22 [ 27.913481] BUG: Bad rss-counter state mm:000000000ec73bb9 type:MM_FILEPAGES val:33 [ 27.914880] BUG: Bad rss-counter state mm:000000000ec73bb9 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:29299' (ECDSA) to the list of known hosts. 2023/06/19 14:52:36 fuzzer started 2023/06/19 14:52:36 dialing manager at localhost:44161 2023/06/19 14:52:36 checking machine... 2023/06/19 14:52:36 checking revisions... [ 28.602930] kmemleak: Automatic memory scanning thread ended 2023/06/19 14:52:36 testing simple program... [ 28.653488] cgroup: Unknown subsys name 'net' [ 28.710672] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 14:52:35 Registers: info registers vcpu 0 RAX=ffff88806ce42b90 RBX=0000000000000000 RCX=1ffffffff0ba7a02 RDX=0000000000000000 RSI=0000000000000008 RDI=0000000000003840 RBP=ffff88800f18fd90 RSP=ffff88800f18fd30 R8 =0000000000000000 R9 =0000000000000000 R10=0000000000000000 R11=0000000000000001 R12=ffff888008fce500 R13=ffff88800ee2ab80 R14=0000000000000cc0 R15=0000000000000cc0 RIP=ffffffff81808646 RFL=00000286 [--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 00007fdf2325b900 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=00007fdf23812618 CR3=000000000ec0e000 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=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 info registers vcpu 1 RAX=dffffc0000000000 RBX=ffff888008e57a18 RCX=0000000000000001 RDX=0000000000000000 RSI=ffffffff84531da7 RDI=ffff888008e57a24 RBP=0000000000000005 RSP=ffff888008e57930 R8 =0000000000000001 R9 =ffff888008e57990 R10=0000000000038001 R11=000000000000fdc6 R12=ffff888008e57a18 R13=0000000000000000 R14=ffff888008e2d1c0 R15=ffff88801a2e0508 RIP=ffffffff813ad49e RFL=00000217 [----APC] 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=00007f29c2c55030 CR3=0000000018f14000 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=32353a3431203931206e754a3e36383c XMM01=7365733a646873732878696e755f6d61 XMM02=736f6c63206e6f6973736573203a296e XMM03=5f6d6170203a5d3832325b6468737320 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320323537 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000