[ 23.581058] BUG: Bad rss-counter state mm:00000000c94035de type:MM_FILEPAGES val:33 [ 23.581081] BUG: Bad rss-counter state mm:00000000c94035de type:MM_ANONPAGES val:22 [ 23.792719] ================================================================== [ 23.793373] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 23.794033] Read of size 8 at addr ffff88801a344880 by task sshd/219 [ 23.794574] [ 23.794730] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 23.795367] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 23.796215] Call Trace: [ 23.796452] [ 23.796656] dump_stack_lvl+0x91/0xf0 [ 23.797006] print_report+0xcc/0x620 [ 23.797350] ? __virt_addr_valid+0x102/0x340 [ 23.797741] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.798183] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.798640] kasan_report+0xbe/0xf0 [ 23.798901] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.799216] vma_interval_tree_remove+0xc75/0xec0 [ 23.799520] vma_prepare+0xc54/0x11a0 [ 23.799767] __split_vma+0x5af/0x950 [ 23.800004] ? __pfx___split_vma+0x10/0x10 [ 23.800272] ? find_held_lock+0x2c/0x110 [ 23.800543] do_vmi_align_munmap+0x2ba/0x11f0 [ 23.800828] ? lock_is_held_type+0x9f/0x120 [ 23.801102] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 23.801407] ? mtree_range_walk+0x632/0x900 [ 23.801688] ? mas_walk+0x5c7/0x7c0 [ 23.801929] do_vmi_munmap+0x1f1/0x2b0 [ 23.802178] mmap_region+0x1f9/0x2660 [ 23.802421] ? vm_mmap_pgoff+0x15c/0x3a0 [ 23.802680] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 23.803054] ? __pfx_lock_acquire+0x10/0x10 [ 23.803324] ? __pfx_mmap_region+0x10/0x10 [ 23.803594] ? security_mmap_addr+0x7d/0xa0 [ 23.803879] ? get_unmapped_area+0x1f5/0x3f0 [ 23.804185] do_mmap+0x854/0xf00 [ 23.804487] vm_mmap_pgoff+0x1a6/0x3a0 [ 23.804780] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 23.805079] ksys_mmap_pgoff+0x3af/0x500 [ 23.805358] do_syscall_64+0x3f/0x90 [ 23.805616] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.805973] RIP: 0033:0x7f628f045d82 [ 23.806218] 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 [ 23.807366] RSP: 002b:00007ffe4bd3be58 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 23.807841] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f628f045d82 [ 23.808289] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f628e47f000 [ 23.808765] RBP: 00007f628e47f000 R08: 0000000000000009 R09: 0000000000001000 [ 23.809233] R10: 0000000000000812 R11: 0000000000000206 R12: 00005650084eaf60 [ 23.809685] R13: 00007ffe4bd3be70 R14: 00007ffe4bd3bea0 R15: 00007ffe4bd3c200 [ 23.810141] [ 23.810298] [ 23.810414] Allocated by task 206: [ 23.810647] kasan_save_stack+0x22/0x50 [ 23.810917] kasan_set_track+0x25/0x30 [ 23.811185] __kasan_slab_alloc+0x59/0x70 [ 23.811463] kmem_cache_alloc+0x16b/0x370 [ 23.811742] vm_area_dup+0x20/0x160 [ 23.811990] __split_vma+0x170/0x950 [ 23.812239] split_vma+0xc6/0x110 [ 23.812480] mprotect_fixup+0x8d2/0xb30 [ 23.812762] do_mprotect_pkey+0x87e/0xd40 [ 23.813040] __x64_sys_mprotect+0x78/0xc0 [ 23.813327] do_syscall_64+0x3f/0x90 [ 23.813580] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.813927] [ 23.814044] Freed by task 110: [ 23.814259] kasan_save_stack+0x22/0x50 [ 23.814526] kasan_set_track+0x25/0x30 [ 23.814795] kasan_save_free_info+0x2b/0x50 [ 23.815083] __kasan_slab_free+0x10a/0x190 [ 23.815370] kmem_cache_free+0x10d/0x4d0 [ 23.815641] rcu_core+0x8c8/0x2860 [ 23.815876] __do_softirq+0x1b7/0x7d4 [ 23.816139] [ 23.816257] Last potentially related work creation: [ 23.816571] kasan_save_stack+0x22/0x50 [ 23.816839] __kasan_record_aux_stack+0x8e/0xa0 [ 23.817146] __call_rcu_common.constprop.0+0x6a/0xb90 [ 23.817491] remove_vma+0x139/0x170 [ 23.817738] do_vmi_align_munmap+0xd4a/0x11f0 [ 23.818036] do_vmi_munmap+0x1f1/0x2b0 [ 23.818299] __vm_munmap+0x138/0x3a0 [ 23.818548] __x64_sys_munmap+0x59/0x80 [ 23.818813] do_syscall_64+0x3f/0x90 [ 23.819068] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.819424] [ 23.819541] The buggy address belongs to the object at ffff88801a344828 [ 23.819541] which belongs to the cache vm_area_struct of size 168 [ 23.820327] The buggy address is located 88 bytes inside of [ 23.820327] freed 168-byte region [ffff88801a344828, ffff88801a3448d0) [ 23.821094] [ 23.821213] The buggy address belongs to the physical page: [ 23.821568] page:00000000e829a2e9 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1a344 [ 23.822154] memcg:ffff88801a31e801 [ 23.822382] flags: 0x100000000000200(slab|node=0|zone=1) [ 23.822734] page_type: 0xffffffff() [ 23.822975] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 23.823467] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801a31e801 [ 23.823948] page dumped because: kasan: bad access detected [ 23.824309] [ 23.824432] Memory state around the buggy address: [ 23.824744] ffff88801a344780: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc [ 23.825206] ffff88801a344800: fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb [ 23.825668] >ffff88801a344880: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 23.826133] ^ [ 23.826356] ffff88801a344900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.826817] ffff88801a344980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc 00 [ 23.827273] ================================================================== [ 23.827796] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 25.880130] BUG: Bad rss-counter state mm:000000009ce145e0 type:MM_FILEPAGES val:33 [ 25.881342] BUG: Bad rss-counter state mm:000000009ce145e0 type:MM_ANONPAGES val:22 [ 26.378430] BUG: Bad rss-counter state mm:00000000acbabf46 type:MM_FILEPAGES val:33 [ 26.379584] BUG: Bad rss-counter state mm:00000000acbabf46 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:41842' (ECDSA) to the list of known hosts. 2023/06/21 03:03:01 fuzzer started 2023/06/21 03:03:01 dialing manager at localhost:36067 2023/06/21 03:03:01 checking machine... 2023/06/21 03:03:01 checking revisions... [ 27.026779] kmemleak: Automatic memory scanning thread ended 2023/06/21 03:03:01 testing simple program... [ 27.068236] cgroup: Unknown subsys name 'net' [ 27.123122] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 03:03:01 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=000000000000001e RCX=0000000000000000 RDX=ffff88800f1f51c0 RSI=ffffffff84900ca0 RDI=0000000000000000 RBP=ffff888019c0bb1e RSP=ffff88800eb9f830 R8 =0000000000000007 R9 =0000000000000010 R10=ffff888019c0bb00 R11=0030733a745f6c65 R12=ffff888019c0bb00 R13=0000000000000001 R14=0000000000000000 R15=00007f30e5c30880 RIP=ffffffff814c0460 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 00007f30e5c34700 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=00007ffd80012338 CR3=0000000016924000 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=6d6f72662064657463656e6e6f637369 XMM02=2e303120746f6f722072657375206d6f XMM03=3a5d3832325b646873732030303a3330 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320363639 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=1ffff110018fc6d1 RBX=ffff88800c7e3658 RCX=ffffffff812e0135 RDX=0000000000000000 RSI=0000000000000000 RDI=ffff88800c7e3688 RBP=ffff888008a9d318 RSP=ffff88806cf09dd8 R8 =0000000000000001 R9 =ffffed100d9e13af R10=0000000000000003 R11=00000000000b6a61 R12=dffffc0000000000 R13=ffff888008a9c468 R14=ffffffff813782f8 R15=ffff88800cac4680 RIP=ffffffff818464e2 RFL=00000046 [---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 00007f46fcfa8900 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=00007f46fd55f618 CR3=000000000dcdc000 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=563412feff00545000000000000080fe 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