syzkaller login: [ 30.096521] BUG: Bad rss-counter state mm:00000000f53b7c28 type:MM_FILEPAGES val:33 [ 30.097519] BUG: Bad rss-counter state mm:00000000f53b7c28 type:MM_ANONPAGES val:22 [ 30.227192] ================================================================== [ 30.227891] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.228614] Read of size 8 at addr ffff88800ebe9d08 by task sshd/220 [ 30.229196] [ 30.229361] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 30.230020] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.230772] Call Trace: [ 30.231017] [ 30.231237] dump_stack_lvl+0x91/0xf0 [ 30.231720] print_report+0xcc/0x620 [ 30.232092] ? __virt_addr_valid+0x102/0x340 [ 30.232519] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.232992] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.233467] kasan_report+0xbe/0xf0 [ 30.233848] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.234322] vma_interval_tree_remove+0xc75/0xec0 [ 30.234798] vma_prepare+0xc54/0x11a0 [ 30.235171] __split_vma+0x5af/0x950 [ 30.235517] ? __pfx___split_vma+0x10/0x10 [ 30.235909] ? find_held_lock+0x2c/0x110 [ 30.236293] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.236703] ? lock_is_held_type+0x9f/0x120 [ 30.237103] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.237557] ? mtree_range_walk+0x632/0x900 [ 30.237971] ? mas_walk+0x5c7/0x7c0 [ 30.238328] do_vmi_munmap+0x1f1/0x2b0 [ 30.238696] mmap_region+0x1f9/0x2660 [ 30.239055] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.239434] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.239966] ? __pfx_lock_acquire+0x10/0x10 [ 30.240362] ? __pfx_mmap_region+0x10/0x10 [ 30.240756] ? security_mmap_addr+0x7d/0xa0 [ 30.241150] ? get_unmapped_area+0x1f5/0x3f0 [ 30.241556] do_mmap+0x854/0xf00 [ 30.241884] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.242250] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.242678] ksys_mmap_pgoff+0x3af/0x500 [ 30.243056] do_syscall_64+0x3f/0x90 [ 30.243407] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.243890] RIP: 0033:0x7fd11cbb9d82 [ 30.244230] 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 [ 30.245820] RSP: 002b:00007ffd8fdb35d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.246516] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fd11cbb9d82 [ 30.247149] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fd11bff3000 [ 30.247786] RBP: 00007fd11bff3000 R08: 0000000000000009 R09: 0000000000001000 [ 30.248423] R10: 0000000000000812 R11: 0000000000000206 R12: 000055fc191f0f60 [ 30.249050] R13: 00007ffd8fdb35f0 R14: 00007ffd8fdb3620 R15: 00007ffd8fdb3980 [ 30.249691] [ 30.249907] [ 30.250066] Allocated by task 212: [ 30.250382] kasan_save_stack+0x22/0x50 [ 30.250763] kasan_set_track+0x25/0x30 [ 30.251129] __kasan_slab_alloc+0x59/0x70 [ 30.251527] kmem_cache_alloc+0x16b/0x370 [ 30.251912] vm_area_dup+0x20/0x160 [ 30.252251] __split_vma+0x170/0x950 [ 30.252600] split_vma+0xc6/0x110 [ 30.252929] mprotect_fixup+0x8d2/0xb30 [ 30.253303] do_mprotect_pkey+0x87e/0xd40 [ 30.253694] __x64_sys_mprotect+0x78/0xc0 [ 30.254079] do_syscall_64+0x3f/0x90 [ 30.254428] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.254920] [ 30.255080] Freed by task 212: [ 30.255370] kasan_save_stack+0x22/0x50 [ 30.255740] kasan_set_track+0x25/0x30 [ 30.256111] kasan_save_free_info+0x2b/0x50 [ 30.256508] __kasan_slab_free+0x10a/0x190 [ 30.256901] kmem_cache_free+0x10d/0x4d0 [ 30.257281] rcu_core+0x8c8/0x2860 [ 30.257612] __do_softirq+0x1b7/0x7d4 [ 30.257965] [ 30.258127] Last potentially related work creation: [ 30.258572] kasan_save_stack+0x22/0x50 [ 30.258954] __kasan_record_aux_stack+0x8e/0xa0 [ 30.259383] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.259862] remove_vma+0x139/0x170 [ 30.260198] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.260616] do_vmi_munmap+0x1f1/0x2b0 [ 30.260980] __vm_munmap+0x138/0x3a0 [ 30.261329] __x64_sys_munmap+0x59/0x80 [ 30.261699] do_syscall_64+0x3f/0x90 [ 30.262051] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.262534] [ 30.262695] Second to last potentially related work creation: [ 30.263205] kasan_save_stack+0x22/0x50 [ 30.263580] __kasan_record_aux_stack+0x8e/0xa0 [ 30.264005] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.264485] remove_vma+0x139/0x170 [ 30.264821] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.265236] do_vmi_munmap+0x1f1/0x2b0 [ 30.265601] mmap_region+0x1f9/0x2660 [ 30.265957] do_mmap+0x854/0xf00 [ 30.266275] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.266650] ksys_mmap_pgoff+0x7d/0x500 [ 30.267018] do_syscall_64+0x3f/0x90 [ 30.267376] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.267853] [ 30.268015] The buggy address belongs to the object at ffff88800ebe9cb0 [ 30.268015] which belongs to the cache vm_area_struct of size 168 [ 30.269113] The buggy address is located 88 bytes inside of [ 30.269113] freed 168-byte region [ffff88800ebe9cb0, ffff88800ebe9d58) [ 30.270171] [ 30.270333] The buggy address belongs to the physical page: [ 30.270832] page:0000000041a6c412 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xebe9 [ 30.271636] memcg:ffff88800f096901 [ 30.271956] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.272444] page_type: 0xffffffff() [ 30.272780] raw: 0100000000000200 ffff88800879fc80 ffffea0000386100 dead000000000002 [ 30.273465] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800f096901 [ 30.274141] page dumped because: kasan: bad access detected [ 30.274666] [ 30.274828] Memory state around the buggy address: [ 30.275262] ffff88800ebe9c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc [ 30.275903] ffff88800ebe9c80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 30.276543] >ffff88800ebe9d00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 30.277176] ^ [ 30.277503] ffff88800ebe9d80: fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.278140] ffff88800ebe9e00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 30.278789] ================================================================== [ 30.279511] Disabling lock debugging due to kernel taint [ 32.509873] BUG: Bad rss-counter state mm:00000000ec1f8fcd type:MM_FILEPAGES val:33 [ 32.511079] BUG: Bad rss-counter state mm:00000000ec1f8fcd type:MM_ANONPAGES val:22 [ 32.996785] BUG: Bad rss-counter state mm:000000002e042cf0 type:MM_FILEPAGES val:33 [ 32.997865] BUG: Bad rss-counter state mm:000000002e042cf0 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:20942' (ECDSA) to the list of known hosts. 2023/06/20 08:14:22 fuzzer started 2023/06/20 08:14:22 dialing manager at localhost:44161 2023/06/20 08:14:22 checking machine... 2023/06/20 08:14:22 checking revisions... [ 33.676532] kmemleak: Automatic memory scanning thread ended 2023/06/20 08:14:22 testing simple program... [ 33.724529] cgroup: Unknown subsys name 'net' [ 33.775103] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 08:14:21 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000001 RCX=ffffffff8613753e RDX=0000000000000000 RSI=0000000000000001 RDI=0000000000000001 RBP=ffff888016d37580 RSP=ffff888016d374b8 R8 =ffffffff86137542 R9 =ffff888016d37568 R10=0000000000038001 R11=0000000000020d8a R12=ffff888016d37588 R13=ffff888016d37570 R14=0000000000000005 R15=ffff888016d37528 RIP=ffffffff81130b3f 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 00007f532b376700 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=00007fb996c8f0b0 CR3=000000000d9b6000 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=2032323a34313a3830203032206e754a XMM01=73732878696e755f6d6170203a5d3932 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3932325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732031323a34313a3830203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8450c50e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffff888008e27e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=ffff888008c58400 R12=ffffffff85d3bed0 R13=1ffff110011c4fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8450d49f 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 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=00007f37c3cbba80 CR3=000000000c5ac000 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=03e22208327cc8966f44c6e310c5b477 XMM02=000000000011fd98eff9b2d0a8fce9cb XMM03=000000000011fe682c67c8bc2e329bc3 XMM04=8bdbac769059e3d700000000000ae988 XMM05=11200a30a2e5bd350000000000136230 XMM06=4fda316b135da52b00000000001352d0 XMM07=e042d86d42eb936e0000000000124058 XMM08=eaf22cbc97e5ee62000000000011fe68 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000