[ 26.058539] BUG: Bad rss-counter state mm:000000003c3252d0 type:MM_FILEPAGES val:33 [ 26.060084] BUG: Bad rss-counter state mm:000000003c3252d0 type:MM_ANONPAGES val:22 [ OK ] Finished Update UTMP about System Runlevel Changes. [ 26.583397] ================================================================== [ 26.584500] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 26.585623] Read of size 8 at addr ffff88801a2b6880 by task sshd/221 [ 26.586718] [ 26.586975] CPU: 1 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 26.588045] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 26.589263] Call Trace: [ 26.589661] [ 26.590015] dump_stack_lvl+0x91/0xf0 [ 26.590622] print_report+0xcc/0x620 [ 26.591222] ? __virt_addr_valid+0x102/0x340 [ 26.591903] ? vma_interval_tree_remove+0xc75/0xec0 [ 26.592659] ? vma_interval_tree_remove+0xc75/0xec0 [ 26.593411] kasan_report+0xbe/0xf0 [ 26.593992] ? vma_interval_tree_remove+0xc75/0xec0 [ 26.594764] vma_interval_tree_remove+0xc75/0xec0 [ 26.595510] vma_prepare+0xc54/0x11a0 [ 26.596099] __split_vma+0x5af/0x950 [ 26.596662] ? __pfx___split_vma+0x10/0x10 [ 26.597317] ? find_held_lock+0x2c/0x110 [ 26.597955] do_vmi_align_munmap+0x2ba/0x11f0 [ 26.598658] ? lock_is_held_type+0x9f/0x120 [ 26.599329] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 26.600065] ? mtree_range_walk+0x632/0x900 [ 26.600741] ? mas_walk+0x5c7/0x7c0 [ 26.601319] do_vmi_munmap+0x1f1/0x2b0 [ 26.601922] mmap_region+0x1f9/0x2660 [ 26.602538] ? vm_mmap_pgoff+0x15c/0x3a0 [ 26.603157] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 26.604029] ? __pfx_lock_acquire+0x10/0x10 [ 26.604687] ? __pfx_mmap_region+0x10/0x10 [ 26.605338] ? security_mmap_addr+0x7d/0xa0 [ 26.605993] ? get_unmapped_area+0x1f5/0x3f0 [ 26.606675] do_mmap+0x854/0xf00 [ 26.607218] vm_mmap_pgoff+0x1a6/0x3a0 [ 26.607824] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 26.608521] ksys_mmap_pgoff+0x3af/0x500 [ 26.609139] do_syscall_64+0x3f/0x90 [ 26.609726] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.610539] RIP: 0033:0x7f2899c3ed82 [ 26.611107] 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 [ 26.613756] RSP: 002b:00007ffe7d95f8e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 26.614753] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f2899c3ed82 [ 26.615570] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f2899078000 [ 26.616373] RBP: 00007f2899078000 R08: 0000000000000009 R09: 0000000000001000 [ 26.617169] R10: 0000000000000812 R11: 0000000000000206 R12: 0000556c2b14eec0 [ 26.617966] R13: 00007ffe7d95f900 R14: 00007ffe7d95f930 R15: 00007ffe7d95fc90 [ 26.618851] [ 26.619135] [ 26.619339] Allocated by task 205: [ 26.619747] kasan_save_stack+0x22/0x50 [ 26.620230] kasan_set_track+0x25/0x30 [ 26.620705] __kasan_slab_alloc+0x59/0x70 [ 26.621206] kmem_cache_alloc+0x16b/0x370 [ 26.621690] vm_area_dup+0x20/0x160 [ 26.622123] __split_vma+0x170/0x950 [ 26.622577] split_vma+0xc6/0x110 [ 26.622991] mprotect_fixup+0x8d2/0xb30 [ 26.623474] do_mprotect_pkey+0x87e/0xd40 [ 26.623991] __x64_sys_mprotect+0x78/0xc0 [ 26.624513] do_syscall_64+0x3f/0x90 [ 26.624979] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.625602] [ 26.625809] Freed by task 19: [ 26.626181] kasan_save_stack+0x22/0x50 [ 26.626693] kasan_set_track+0x25/0x30 [ 26.627172] kasan_save_free_info+0x2b/0x50 [ 26.627783] __kasan_slab_free+0x10a/0x190 [ 26.628311] kmem_cache_free+0x10d/0x4d0 [ 26.628810] rcu_core+0x8c8/0x2860 [ 26.629244] __do_softirq+0x1b7/0x7d4 [ 26.629714] [ 26.629926] Last potentially related work creation: [ 26.630529] kasan_save_stack+0x22/0x50 [ 26.631024] __kasan_record_aux_stack+0x8e/0xa0 [ 26.631588] __call_rcu_common.constprop.0+0x6a/0xb90 [ 26.632235] remove_vma+0x139/0x170 [ 26.632688] do_vmi_align_munmap+0xd4a/0x11f0 [ 26.633241] do_vmi_munmap+0x1f1/0x2b0 [ 26.633731] __vm_munmap+0x138/0x3a0 [ 26.634205] __x64_sys_munmap+0x59/0x80 [ 26.634706] do_syscall_64+0x3f/0x90 [ 26.635182] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.635817] [ 26.636034] The buggy address belongs to the object at ffff88801a2b6828 [ 26.636034] which belongs to the cache vm_area_struct of size 168 [ 26.637477] The buggy address is located 88 bytes inside of [ 26.637477] freed 168-byte region [ffff88801a2b6828, ffff88801a2b68d0) [ 26.638869] [ 26.639085] The buggy address belongs to the physical page: [ 26.639730] page:000000001530e8fe refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1a2b6 [ 26.640799] memcg:ffff88801a24eb01 [ 26.641214] flags: 0x100000000000200(slab|node=0|zone=1) [ 26.641851] page_type: 0xffffffff() [ 26.642301] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 26.643196] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801a24eb01 [ 26.644052] page dumped because: kasan: bad access detected [ 26.644668] [ 26.644873] Memory state around the buggy address: [ 26.645417] ffff88801a2b6780: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc [ 26.646229] ffff88801a2b6800: fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb [ 26.647087] >ffff88801a2b6880: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 26.647930] ^ [ 26.648345] ffff88801a2b6900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.649193] ffff88801a2b6980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc 00 [ 26.650042] ================================================================== [ 26.650983] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 28.964990] BUG: Bad rss-counter state mm:0000000047fe6a2f type:MM_FILEPAGES val:33 [ 28.965978] BUG: Bad rss-counter state mm:0000000047fe6a2f type:MM_ANONPAGES val:22 [ 29.414982] BUG: Bad rss-counter state mm:000000006abac459 type:MM_FILEPAGES val:33 [ 29.416614] BUG: Bad rss-counter state mm:000000006abac459 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:2454' (ECDSA) to the list of known hosts. [ 29.546421] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 29.547816] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 29.548726] CPU: 0 PID: 237 Comm: sshd Tainted: G B 6.4.0-rc7-next-20230619 #1 [ 29.549759] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 29.550765] RIP: 0010:__rb_insert_augmented+0x78/0x8b0 [ 29.551432] Code: ea 48 c1 ea 03 42 80 3c 2a 00 0f 85 65 05 00 00 4c 8b 65 00 41 f6 c4 01 0f 85 18 05 00 00 4d 8d 44 24 08 4c 89 c2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 55 05 00 00 4d 8b 74 24 08 49 39 ee 0f 84 77 [ 29.553602] RSP: 0018:ffff8880195278a8 EFLAGS: 00010212 [ 29.554264] RAX: ffff888019b54140 RBX: ffff888017420ec0 RCX: 1ffff11002e841d8 [ 29.555143] RDX: 0000000000000001 RSI: ffff888019b54140 RDI: ffff888017420ec0 [ 29.556003] RBP: ffff88801a2d35b0 R08: 0000000000000008 R09: 0000000000000000 [ 29.556861] R10: 0000000000000000 R11: 00000000000b6996 R12: 0000000000000000 [ 29.557708] R13: dffffc0000000000 R14: ffff888019527988 R15: ffffffff816e61c0 [ 29.558599] FS: 00007f91fa559900(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 [ 29.559564] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.560268] CR2: 00007f91fa50a000 CR3: 000000000c54a000 CR4: 0000000000350ef0 [ 29.561134] Call Trace: [ 29.561458] [ 29.561746] ? die_addr+0x3c/0xa0 [ 29.562197] ? exc_general_protection+0x125/0x220 [ 29.562825] ? asm_exc_general_protection+0x26/0x30 [ 29.563458] ? __pfx_vma_interval_tree_augment_rotate+0x10/0x10 [ 29.564211] ? __rb_insert_augmented+0x78/0x8b0 [ 29.564805] ? vma_interval_tree_insert+0x23a/0x400 [ 29.565436] vma_prepare+0xa1a/0x11a0 [ 29.565918] __split_vma+0x5af/0x950 [ 29.566413] ? __pfx___split_vma+0x10/0x10 [ 29.566943] ? lock_acquire+0x434/0x4c0 [ 29.567457] do_vmi_align_munmap+0x361/0x11f0 [ 29.568030] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 29.568653] ? mtree_range_walk+0x632/0x900 [ 29.569214] ? mas_walk+0x5c7/0x7c0 [ 29.569686] do_vmi_munmap+0x1f1/0x2b0 [ 29.570186] mmap_region+0x1f9/0x2660 [ 29.570692] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 29.571410] ? __pfx_lock_acquire+0x10/0x10 [ 29.571954] ? __pfx_mmap_region+0x10/0x10 [ 29.572489] ? security_mmap_addr+0x7d/0xa0 [ 29.573019] ? get_unmapped_area+0x1f5/0x3f0 [ 29.573570] do_mmap+0x854/0xf00 [ 29.574021] vm_mmap_pgoff+0x1a6/0x3a0 [ 29.574534] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 29.575108] ksys_mmap_pgoff+0x3af/0x500 [ 29.575633] do_syscall_64+0x3f/0x90 [ 29.576114] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.576774] RIP: 0033:0x7f91fb0ebd82 [ 29.577240] 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 [ 29.579416] RSP: 002b:00007ffd94ef4568 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 29.580326] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f91fb0ebd82 [ 29.581178] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f91fa505000 [ 29.582032] RBP: 00007f91fa505000 R08: 0000000000000008 R09: 0000000000001000 [ 29.582889] R10: 0000000000000812 R11: 0000000000000206 R12: 000055f56f6c0630 [ 29.583736] R13: 00007ffd94ef4580 R14: 00007ffd94ef45b0 R15: 00007ffd94ef4910 [ 29.584605] [ 29.584896] Modules linked in: [ 29.586126] ---[ end trace 0000000000000000 ]--- [ 29.586798] RIP: 0010:__rb_insert_augmented+0x78/0x8b0 [ 29.587715] Code: ea 48 c1 ea 03 42 80 3c 2a 00 0f 85 65 05 00 00 4c 8b 65 00 41 f6 c4 01 0f 85 18 05 00 00 4d 8d 44 24 08 4c 89 c2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 55 05 00 00 4d 8b 74 24 08 49 39 ee 0f 84 77 [ 29.590188] RSP: 0018:ffff8880195278a8 EFLAGS: 00010212 [ 29.591098] RAX: ffff888019b54140 RBX: ffff888017420ec0 RCX: 1ffff11002e841d8 [ 29.592133] RDX: 0000000000000001 RSI: ffff888019b54140 RDI: ffff888017420ec0 [ 29.593129] RBP: ffff88801a2d35b0 R08: 0000000000000008 R09: 0000000000000000 [ 29.594072] R10: 0000000000000000 R11: 00000000000b6996 R12: 0000000000000000 [ 29.595085] R13: dffffc0000000000 R14: ffff888019527988 R15: ffffffff816e61c0 [ 29.595981] FS: 00007f91fa559900(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 [ 29.597012] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.597917] CR2: 00007f91fa50a000 CR3: 000000000c54a000 CR4: 0000000000350ef0 VM DIAGNOSIS: 07:45:01 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=1ffff11001db7fac RCX=00007ffe62b42000 RDX=ffff888019f6fe80 RSI=ffffea000069f900 RDI=ffffea000069f900 RBP=ffff888019f6fe80 RSP=ffff88800edbfd30 R8 =0000000000000001 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=0000000000000000 R12=ffffea000069f900 R13=ffff88800845ca00 R14=ffff88800845cef0 R15=800000001a7e4067 RIP=ffffffff8175fbf2 RFL=00000282 [--S----] 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 =0000 0000000000000000 00000000 00000000 DS =0000 0000000000000000 00000000 00000000 FS =0000 00007fc30456b900 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=00007ffe62b42c4c CR3=000000000e6d6000 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=00000000000000000000000000000000 XMM02=000000000000000000000000000000ff XMM03=6ea8ec0644c0d62f24c4437ece1ad1a1 XMM04=a9108b4cf2e5bcfe07799213c0cecf85 XMM05=000000000000000000000000000000ff XMM06=6e108b0644c0bc2f07794313c01acf85 XMM07=672065736f6c635f6e6f69737365733a XMM08=652075253d64692073253d706f000000 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=00007f221a9e08a0 CR3=000000000e724000 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=2033303a35343a3730203032206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732033303a35343a3730203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000