syzkaller login: [ 31.546642] BUG: Bad rss-counter state mm:00000000da9d31d0 type:MM_FILEPAGES val:33 [ 31.548663] BUG: Bad rss-counter state mm:00000000da9d31d0 type:MM_ANONPAGES val:22 [ 31.744188] ================================================================== [ 31.745517] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.747066] Read of size 8 at addr ffff88800dde7798 by task sshd/222 [ 31.748186] [ 31.748506] CPU: 1 PID: 222 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 31.749763] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.751202] Call Trace: [ 31.751664] [ 31.752002] dump_stack_lvl+0x91/0xf0 [ 31.752595] print_report+0xcc/0x620 [ 31.753171] ? __virt_addr_valid+0x102/0x340 [ 31.753829] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.754577] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.755317] kasan_report+0xbe/0xf0 [ 31.755882] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.756641] vma_interval_tree_remove+0xc75/0xec0 [ 31.757358] vma_prepare+0xc54/0x11a0 [ 31.757931] __split_vma+0x5af/0x950 [ 31.758503] ? __pfx___split_vma+0x10/0x10 [ 31.759131] ? find_held_lock+0x2c/0x110 [ 31.759754] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.760448] ? lock_is_held_type+0x9f/0x120 [ 31.761105] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.761833] ? mtree_range_walk+0x632/0x900 [ 31.762495] ? mas_walk+0x5c7/0x7c0 [ 31.763059] do_vmi_munmap+0x1f1/0x2b0 [ 31.763647] mmap_region+0x1f9/0x2660 [ 31.764228] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.764835] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.765698] ? __pfx_lock_acquire+0x10/0x10 [ 31.766336] ? __pfx_mmap_region+0x10/0x10 [ 31.766965] ? selinux_mmap_file+0x132/0x190 [ 31.767633] ? security_mmap_addr+0x7d/0xa0 [ 31.768299] ? get_unmapped_area+0x1f5/0x3f0 [ 31.768967] do_mmap+0x854/0xf00 [ 31.769485] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.770072] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.770736] ksys_mmap_pgoff+0x3af/0x500 [ 31.771347] do_syscall_64+0x3f/0x90 [ 31.771919] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.772706] RIP: 0033:0x7f72a07f5d82 [ 31.773256] 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 [ 31.775844] RSP: 002b:00007ffdb8fcb038 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.776935] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f72a07f5d82 [ 31.777975] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f729fc2f000 [ 31.779019] RBP: 00007f729fc2f000 R08: 0000000000000009 R09: 0000000000001000 [ 31.780049] R10: 0000000000000812 R11: 0000000000000206 R12: 000055bf584ecec0 [ 31.781117] R13: 00007ffdb8fcb050 R14: 00007ffdb8fcb080 R15: 00007ffdb8fcb3e0 [ 31.782160] [ 31.782504] [ 31.782757] Allocated by task 213: [ 31.783278] kasan_save_stack+0x22/0x50 [ 31.783882] kasan_set_track+0x25/0x30 [ 31.784434] __kasan_slab_alloc+0x59/0x70 [ 31.785077] kmem_cache_alloc+0x16b/0x370 [ 31.785694] vm_area_dup+0x20/0x160 [ 31.786245] __split_vma+0x170/0x950 [ 31.786804] split_vma+0xc6/0x110 [ 31.787327] mprotect_fixup+0x8d2/0xb30 [ 31.788029] do_mprotect_pkey+0x87e/0xd40 [ 31.788658] __x64_sys_mprotect+0x78/0xc0 [ 31.789288] do_syscall_64+0x3f/0x90 [ 31.789852] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.790618] [ 31.790869] Freed by task 213: [ 31.791340] kasan_save_stack+0x22/0x50 [ 31.791958] kasan_set_track+0x25/0x30 [ 31.792575] kasan_save_free_info+0x2b/0x50 [ 31.793217] __kasan_slab_free+0x10a/0x190 [ 31.793853] kmem_cache_free+0x10d/0x4d0 [ 31.794464] rcu_core+0x8c8/0x2860 [ 31.794994] __do_softirq+0x1b7/0x7d4 [ 31.795563] [ 31.795817] Last potentially related work creation: [ 31.796544] kasan_save_stack+0x22/0x50 [ 31.797149] __kasan_record_aux_stack+0x8e/0xa0 [ 31.797835] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.798604] remove_vma+0x139/0x170 [ 31.799156] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.799829] do_vmi_munmap+0x1f1/0x2b0 [ 31.800422] __vm_munmap+0x138/0x3a0 [ 31.800987] __x64_sys_munmap+0x59/0x80 [ 31.801581] do_syscall_64+0x3f/0x90 [ 31.802147] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.802920] [ 31.803176] Second to last potentially related work creation: [ 31.804007] kasan_save_stack+0x22/0x50 [ 31.804629] __kasan_record_aux_stack+0x8e/0xa0 [ 31.805321] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.806087] remove_vma+0x139/0x170 [ 31.806620] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.807291] do_vmi_munmap+0x1f1/0x2b0 [ 31.807866] mmap_region+0x1f9/0x2660 [ 31.808448] do_mmap+0x854/0xf00 [ 31.808960] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.809540] ksys_mmap_pgoff+0x3af/0x500 [ 31.810134] do_syscall_64+0x3f/0x90 [ 31.810691] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.811467] [ 31.811722] The buggy address belongs to the object at ffff88800dde7740 [ 31.811722] which belongs to the cache vm_area_struct of size 168 [ 31.813537] The buggy address is located 88 bytes inside of [ 31.813537] freed 168-byte region [ffff88800dde7740, ffff88800dde77e8) [ 31.815257] [ 31.815510] The buggy address belongs to the physical page: [ 31.816377] page:00000000283acc68 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xdde7 [ 31.817776] memcg:ffff88800e1f9d01 [ 31.818312] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.819123] page_type: 0xffffffff() [ 31.819686] raw: 0100000000000200 ffff88800879fc80 ffffea000036bfc0 dead000000000004 [ 31.820854] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e1f9d01 [ 31.821740] page dumped because: kasan: bad access detected [ 31.822397] [ 31.822612] Memory state around the buggy address: [ 31.823203] ffff88800dde7680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 31.824048] ffff88800dde7700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 31.824913] >ffff88800dde7780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 31.825765] ^ [ 31.826257] ffff88800dde7800: fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 [ 31.827104] ffff88800dde7880: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc [ 31.827972] ================================================================== [ 31.829006] Disabling lock debugging due to kernel taint [ 33.974294] BUG: Bad rss-counter state mm:000000007dc56565 type:MM_FILEPAGES val:33 [ 33.975405] BUG: Bad rss-counter state mm:000000007dc56565 type:MM_ANONPAGES val:22 [ 34.465147] BUG: Bad rss-counter state mm:000000000f1c68e2 type:MM_FILEPAGES val:32 [ 34.466178] BUG: Bad rss-counter state mm:000000000f1c68e2 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:26687' (ECDSA) to the list of known hosts. 2023/06/19 21:25:00 fuzzer started 2023/06/19 21:25:01 dialing manager at localhost:44161 2023/06/19 21:25:01 checking machine... 2023/06/19 21:25:01 checking revisions... [ 35.179767] kmemleak: Automatic memory scanning thread ended 2023/06/19 21:25:01 testing simple program... [ 35.228751] cgroup: Unknown subsys name 'net' [ 35.270246] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 21:24:59 Registers: info registers vcpu 0 RAX=0000000000000001 RBX=0000000000000001 RCX=0000000000000000 RDX=0000000000000001 RSI=00000000000000fb RDI=0000000000000001 RBP=ffff88800eb0f6a8 RSP=ffff88800eb0f5e0 R8 =0000000000000001 R9 =ffffed1001d61ec8 R10=ffff88800eb0f647 R11=0000000000000000 R12=0000000000000001 R13=0000000000000000 R14=0000000000000001 R15=dffffc0000000000 RIP=ffffffff8112993a RFL=00000002 [-------] 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 00007fc4b1023900 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=00007fc4b15d8650 CR3=000000001a1c6000 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=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=00007f7d3daa07d0 CR3=000000000d760000 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=85aaee65f92e7d864b43526cded19440 XMM02=ec2efd57dc4c00df000000000011cc20 XMM03=2c4f10de14d9a7be000000000011ccf0 XMM04=ef7346563d60fc6600000000000ae988 XMM05=19e9129bd510f23500000000001351a0 XMM06=4fda316b135da52b0000000000135028 XMM07=e042d86d42eb936e00000000001240a8 XMM08=2c4f10de14d9a7be000000000011ccf0 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000