[ 74.274884] BUG: Bad rss-counter state mm:0000000037f7416c type:MM_FILEPAGES val:33 [ 74.276383] BUG: Bad rss-counter state mm:0000000037f7416c type:MM_ANONPAGES val:22 [ 74.385531] ================================================================== [ 74.386235] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 74.386980] Read of size 8 at addr ffff88800e7274e0 by task sshd/218 [ 74.387582] [ 74.387751] CPU: 0 PID: 218 Comm: sshd Tainted: G L 6.4.0-rc7-next-20230619 #1 [ 74.388637] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 74.389400] Call Trace: [ 74.389647] [ 74.389867] dump_stack_lvl+0x91/0xf0 [ 74.390265] print_report+0xcc/0x620 [ 74.390639] ? __virt_addr_valid+0x102/0x340 [ 74.391074] ? vma_interval_tree_remove+0xc75/0xec0 [ 74.391557] ? vma_interval_tree_remove+0xc75/0xec0 [ 74.392032] kasan_report+0xbe/0xf0 [ 74.392405] ? vma_interval_tree_remove+0xc75/0xec0 [ 74.392885] vma_interval_tree_remove+0xc75/0xec0 [ 74.393349] vma_prepare+0xc54/0x11a0 [ 74.393724] __split_vma+0x5af/0x950 [ 74.394093] ? __pfx___split_vma+0x10/0x10 [ 74.394497] ? find_held_lock+0x2c/0x110 [ 74.394902] do_vmi_align_munmap+0x2ba/0x11f0 [ 74.395336] ? lock_is_held_type+0x9f/0x120 [ 74.395750] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 74.396221] ? mtree_range_walk+0x632/0x900 [ 74.396668] ? mas_walk+0x5c7/0x7c0 [ 74.397036] do_vmi_munmap+0x1f1/0x2b0 [ 74.397417] mmap_region+0x1f9/0x2660 [ 74.397793] ? vm_mmap_pgoff+0x15c/0x3a0 [ 74.398189] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 74.398741] ? __pfx_lock_acquire+0x10/0x10 [ 74.399155] ? __pfx_mmap_region+0x10/0x10 [ 74.399564] ? security_mmap_addr+0x7d/0xa0 [ 74.399976] ? get_unmapped_area+0x1f5/0x3f0 [ 74.400408] do_mmap+0x854/0xf00 [ 74.400748] vm_mmap_pgoff+0x1a6/0x3a0 [ 74.401130] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 74.401564] ksys_mmap_pgoff+0x3af/0x500 [ 74.401956] do_syscall_64+0x3f/0x90 [ 74.402333] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 74.402835] RIP: 0033:0x7f6ad4591d82 [ 74.403187] 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 [ 74.404851] RSP: 002b:00007ffe1b4d1bc8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 74.405561] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f6ad4591d82 [ 74.406222] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f6ad39cb000 [ 74.406883] RBP: 00007f6ad39cb000 R08: 0000000000000009 R09: 0000000000001000 [ 74.407539] R10: 0000000000000812 R11: 0000000000000206 R12: 00005598f4d31ec0 [ 74.408199] R13: 00007ffe1b4d1be0 R14: 00007ffe1b4d1c10 R15: 00007ffe1b4d1f70 [ 74.408872] [ 74.409097] [ 74.409262] Allocated by task 211: [ 74.409594] kasan_save_stack+0x22/0x50 [ 74.409985] kasan_set_track+0x25/0x30 [ 74.410365] __kasan_slab_alloc+0x59/0x70 [ 74.410771] kmem_cache_alloc+0x16b/0x370 [ 74.411167] vm_area_dup+0x20/0x160 [ 74.411521] __split_vma+0x170/0x950 [ 74.411892] split_vma+0xc6/0x110 [ 74.412230] mprotect_fixup+0x8d2/0xb30 [ 74.412630] do_mprotect_pkey+0x87e/0xd40 [ 74.413040] __x64_sys_mprotect+0x78/0xc0 [ 74.413443] do_syscall_64+0x3f/0x90 [ 74.413816] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 74.414316] [ 74.414484] Freed by task 211: [ 74.414788] kasan_save_stack+0x22/0x50 [ 74.415181] kasan_set_track+0x25/0x30 [ 74.415562] kasan_save_free_info+0x2b/0x50 [ 74.415978] __kasan_slab_free+0x10a/0x190 [ 74.416403] kmem_cache_free+0x10d/0x4d0 [ 74.416802] rcu_core+0x8c8/0x2860 [ 74.417148] __do_softirq+0x1b7/0x7d4 [ 74.417517] [ 74.417682] Last potentially related work creation: [ 74.418136] kasan_save_stack+0x22/0x50 [ 74.418525] __kasan_record_aux_stack+0x8e/0xa0 [ 74.418970] __call_rcu_common.constprop.0+0x6a/0xb90 [ 74.419466] remove_vma+0x139/0x170 [ 74.419820] do_vmi_align_munmap+0xd4a/0x11f0 [ 74.420248] do_vmi_munmap+0x1f1/0x2b0 [ 74.420630] __vm_munmap+0x138/0x3a0 [ 74.420997] __x64_sys_munmap+0x59/0x80 [ 74.421380] do_syscall_64+0x3f/0x90 [ 74.421745] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 74.422244] [ 74.422412] The buggy address belongs to the object at ffff88800e727488 [ 74.422412] which belongs to the cache vm_area_struct of size 168 [ 74.423551] The buggy address is located 88 bytes inside of [ 74.423551] freed 168-byte region [ffff88800e727488, ffff88800e727530) [ 74.424614] [ 74.424782] The buggy address belongs to the physical page: [ 74.425299] page:00000000dc0b3baa refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe727 [ 74.426145] memcg:ffff88800e589e01 [ 74.426476] flags: 0x100000000000200(slab|node=0|zone=1) [ 74.426978] page_type: 0xffffffff() [ 74.427325] raw: 0100000000000200 ffff88800879fc80 dead000000000100 dead000000000122 [ 74.428032] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e589e01 [ 74.428747] page dumped because: kasan: bad access detected [ 74.429256] [ 74.429420] Memory state around the buggy address: [ 74.429871] ffff88800e727380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 74.430530] ffff88800e727400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 74.431191] >ffff88800e727480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 74.431843] ^ [ 74.432435] ffff88800e727500: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb [ 74.433101] ffff88800e727580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 74.433764] ================================================================== [ 74.434493] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 76.695938] BUG: Bad rss-counter state mm:00000000deb2a93a type:MM_FILEPAGES val:33 [ 76.697114] BUG: Bad rss-counter state mm:00000000deb2a93a type:MM_ANONPAGES val:22 [ 77.247916] BUG: Bad rss-counter state mm:00000000cd168225 type:MM_FILEPAGES val:33 [ 77.249122] BUG: Bad rss-counter state mm:00000000cd168225 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:46848' (ECDSA) to the list of known hosts. 2023/06/20 02:28:29 fuzzer started 2023/06/20 02:28:29 dialing manager at localhost:44161 2023/06/20 02:28:29 checking machine... 2023/06/20 02:28:29 checking revisions... [ 77.915446] kmemleak: Automatic memory scanning thread ended 2023/06/20 02:28:29 testing simple program... [ 77.962086] cgroup: Unknown subsys name 'net' [ 77.999023] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 02:27:38 Registers: info registers vcpu 0 RAX=0000000000000001 RBX=ffff88806ce35000 RCX=1ffffffff0ba72c0 RDX=0000000000000000 RSI=ffffffff81007b90 RDI=0000000000000007 RBP=00007f1eca49cf18 RSP=ffff8880187177b0 R8 =0000000000000007 R9 =ffffffffff600000 R10=00007f1eca49c000 R11=00000000000b6996 R12=ffff8880187178c8 R13=0000000000000000 R14=ffff8880164e1b40 R15=ffff888013964000 RIP=ffffffff8135b929 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 00007f1ec9fb5900 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=00007f1eca56d0b0 CR3=000000000d5f8000 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=ffff888016fcf410 RBX=0000000000000002 RCX=0000000000000002 RDX=ffff88806cf0a001 RSI=ffff88806cf09ff8 RDI=ffff88806cf09ff8 RBP=ffff88806cf09af0 RSP=ffff88806cf09a28 R8 =ffffffff864b115c R9 =ffff88806cf09ad8 R10=0000000000038001 R11=00000000000b523e R12=ffff88806cf09af8 R13=ffff88806cf09ae0 R14=ffff88806cf09ff8 R15=ffff88806cf09a98 RIP=ffffffff81130df7 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 00007f4715607700 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=00007ff4c86447a0 CR3=0000000016db6000 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=656e6e6f637369642064657669656365 XMM02=63736964203a31313a38303130342074 XMM03=66207463656e6e6f6373696420646576 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320383031 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000