syzkaller login: [ 30.688592] BUG: Bad rss-counter state mm:00000000c3bc29d0 type:MM_FILEPAGES val:33 [ 30.689987] BUG: Bad rss-counter state mm:00000000c3bc29d0 type:MM_ANONPAGES val:22 [ 30.842836] ================================================================== [ 30.843784] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.844704] Read of size 8 at addr ffff88800e3b7058 by task sshd/219 [ 30.845454] [ 30.845675] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 30.846626] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.847575] Call Trace: [ 30.847917] [ 30.848197] dump_stack_lvl+0x91/0xf0 [ 30.848694] print_report+0xcc/0x620 [ 30.849172] ? __virt_addr_valid+0x102/0x340 [ 30.849714] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.850321] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.850925] kasan_report+0xbe/0xf0 [ 30.851397] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.852026] vma_interval_tree_remove+0xc75/0xec0 [ 30.852658] vma_prepare+0xc54/0x11a0 [ 30.853129] __split_vma+0x5af/0x950 [ 30.853598] ? __pfx___split_vma+0x10/0x10 [ 30.854116] ? find_held_lock+0x2c/0x110 [ 30.854631] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.855188] ? lock_is_held_type+0x9f/0x120 [ 30.855729] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.856337] ? mtree_range_walk+0x632/0x900 [ 30.856888] ? mas_walk+0x5c7/0x7c0 [ 30.857352] do_vmi_munmap+0x1f1/0x2b0 [ 30.857842] mmap_region+0x1f9/0x2660 [ 30.858321] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.858838] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.859553] ? __pfx_lock_acquire+0x10/0x10 [ 30.860093] ? __pfx_mmap_region+0x10/0x10 [ 30.860621] ? security_mmap_addr+0x7d/0xa0 [ 30.861142] ? get_unmapped_area+0x1f5/0x3f0 [ 30.861688] do_mmap+0x854/0xf00 [ 30.862134] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.862627] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.863179] ksys_mmap_pgoff+0x3af/0x500 [ 30.863692] do_syscall_64+0x3f/0x90 [ 30.864169] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.864806] RIP: 0033:0x7f5da60bcd82 [ 30.865254] 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 [ 30.867320] RSP: 002b:00007ffe6fe38e68 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.868220] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f5da60bcd82 [ 30.869043] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f5da54f6000 [ 30.869874] RBP: 00007f5da54f6000 R08: 0000000000000009 R09: 0000000000001000 [ 30.870704] R10: 0000000000000812 R11: 0000000000000206 R12: 0000564faf989ec0 [ 30.871531] R13: 00007ffe6fe38e80 R14: 00007ffe6fe38eb0 R15: 00007ffe6fe39210 [ 30.872375] [ 30.872665] [ 30.872885] Allocated by task 212: [ 30.873302] kasan_save_stack+0x22/0x50 [ 30.873807] kasan_set_track+0x25/0x30 [ 30.874296] __kasan_slab_alloc+0x59/0x70 [ 30.874807] kmem_cache_alloc+0x16b/0x370 [ 30.875314] vm_area_dup+0x20/0x160 [ 30.875784] __split_vma+0x170/0x950 [ 30.876248] split_vma+0xc6/0x110 [ 30.876684] mprotect_fixup+0x8d2/0xb30 [ 30.877185] do_mprotect_pkey+0x87e/0xd40 [ 30.877693] __x64_sys_mprotect+0x78/0xc0 [ 30.878204] do_syscall_64+0x3f/0x90 [ 30.878669] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.879308] [ 30.879522] Freed by task 212: [ 30.879920] kasan_save_stack+0x22/0x50 [ 30.880414] kasan_set_track+0x25/0x30 [ 30.880910] kasan_save_free_info+0x2b/0x50 [ 30.881429] __kasan_slab_free+0x10a/0x190 [ 30.881958] kmem_cache_free+0x10d/0x4d0 [ 30.882459] rcu_core+0x8c8/0x2860 [ 30.882892] __do_softirq+0x1b7/0x7d4 [ 30.883364] [ 30.883587] Last potentially related work creation: [ 30.884175] kasan_save_stack+0x22/0x50 [ 30.884673] __kasan_record_aux_stack+0x8e/0xa0 [ 30.885232] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.885866] remove_vma+0x139/0x170 [ 30.886312] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.886863] do_vmi_munmap+0x1f1/0x2b0 [ 30.887335] __vm_munmap+0x138/0x3a0 [ 30.887906] __x64_sys_munmap+0x59/0x80 [ 30.888409] do_syscall_64+0x3f/0x90 [ 30.888901] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.889529] [ 30.889742] The buggy address belongs to the object at ffff88800e3b7000 [ 30.889742] which belongs to the cache vm_area_struct of size 168 [ 30.891172] The buggy address is located 88 bytes inside of [ 30.891172] freed 168-byte region [ffff88800e3b7000, ffff88800e3b70a8) [ 30.892557] [ 30.892775] The buggy address belongs to the physical page: [ 30.893423] page:000000002a5c7e4c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe3b7 [ 30.894487] memcg:ffff88800975c301 [ 30.894910] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.895547] page_type: 0xffffffff() [ 30.896025] raw: 0100000000000200 ffff88800879fc80 ffffea00004d3140 dead000000000004 [ 30.896929] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800975c301 [ 30.897817] page dumped because: kasan: bad access detected [ 30.898466] [ 30.898686] Memory state around the buggy address: [ 30.899264] ffff88800e3b6f00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc [ 30.900120] ffff88800e3b6f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.901128] >ffff88800e3b7000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.902178] ^ [ 30.903078] ffff88800e3b7080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 30.904148] ffff88800e3b7100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.905206] ================================================================== [ 30.906423] Disabling lock debugging due to kernel taint [ 33.524777] BUG: Bad rss-counter state mm:00000000635138e5 type:MM_FILEPAGES val:33 [ 33.526299] BUG: Bad rss-counter state mm:00000000635138e5 type:MM_ANONPAGES val:22 [ 33.993159] BUG: Bad rss-counter state mm:000000006c7461f7 type:MM_FILEPAGES val:33 [ 33.994358] BUG: Bad rss-counter state mm:000000006c7461f7 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:64880' (ECDSA) to the list of known hosts. 2023/06/19 12:11:52 fuzzer started 2023/06/19 12:11:52 dialing manager at localhost:44161 2023/06/19 12:11:52 checking machine... 2023/06/19 12:11:52 checking revisions... [ 34.669208] kmemleak: Automatic memory scanning thread ended 2023/06/19 12:11:52 testing simple program... [ 34.722497] cgroup: Unknown subsys name 'net' [ 34.769277] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 12:11:51 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=1ffff1100284eee4 RCX=0000000000000000 RDX=ffff88800d981b40 RSI=ffffffff818acc53 RDI=ffff88800d982310 RBP=ffff8880142778c8 RSP=ffff888014277708 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=0000000000000001 R12=0000000000000000 R13=ffff888014277750 R14=0000000000000000 R15=ffff88800d981b40 RIP=ffffffff818acc53 RFL=00000293 [--S-A-C] 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 00007f646589c900 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=00007f9fcb1b7650 CR3=000000000f2ce000 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=756f6a2f646d65747379732f6e75722f XMM01=00676f6c7379732f6c616e72756f6a2f XMM02=756f6a2f646d65747379732f6e75722f XMM03=006c616e72756f6a2f646d6574737973 XMM04=a9382da1d99d80d800000000000ae988 XMM05=6cf390696c08075300000000001353e8 XMM06=806171799158d9670000000000133e68 XMM07=fb795ef6d657705600000000001246a0 XMM08=4f5453444600273d67736d000d0a0920 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 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=00007ffe4148afd8 CR3=000000000ed86000 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=2031353a31313a3231203931206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732031353a31313a3231203931 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000