syzkaller login: [ 81.015305][ T5016] sshd (5016) used greatest stack depth: 19056 bytes left [ 86.634033][ T9] cfg80211: failed to load regulatory.db Warning: Permanently added '[localhost]:44254' (ED25519) to the list of known hosts. executing program [ 87.537704][ T5096] loop0: detected capacity change from 0 to 32768 [ 87.590376][ T5096] JBD2: Ignoring recovery information on journal [ 87.636410][ T5096] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [ 87.646195][ T5096] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 87.650707][ T5096] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 87.654833][ T5096] CPU: 0 UID: 0 PID: 5096 Comm: syz-executor792 Not tainted 6.11.0-rc4-syzkaller-00002-gb0da640826ba #0 [ 87.658855][ T5096] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 87.662876][ T5096] RIP: 0010:ocfs2_prepare_dir_for_insert+0x3309/0x5c70 [ 87.665488][ T5096] Code: 00 00 e8 2a 25 13 fe e9 ba 06 00 00 e8 20 25 13 fe e9 4f 01 00 00 e8 16 25 13 fe 49 8d 7f 08 49 8d 5f 09 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 bd 23 00 00 48 89 d8 48 c1 e8 03 42 0f [ 87.672584][ T5096] RSP: 0018:ffffc9000af9f020 EFLAGS: 00010202 [ 87.674904][ T5096] RAX: 0000000000000001 RBX: 0000000000000009 RCX: ffff88801e27a440 [ 87.677669][ T5096] RDX: 0000000000000000 RSI: 0000000000000400 RDI: 0000000000000008 [ 87.680660][ T5096] RBP: ffffc9000af9f830 R08: ffffffff8380395b R09: ffffffff838090a7 [ 87.683605][ T5096] R10: 0000000000000002 R11: ffff88801e27a440 R12: dffffc0000000000 [ 87.686680][ T5096] R13: ffff88803c660878 R14: f700000000000088 R15: 0000000000000000 [ 87.689698][ T5096] FS: 000055555a677380(0000) GS:ffff888020800000(0000) knlGS:0000000000000000 [ 87.693140][ T5096] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 87.695631][ T5096] CR2: 0000560bce569178 CR3: 000000001de5a000 CR4: 0000000000350ef0 [ 87.698655][ T5096] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 87.701565][ T5096] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 87.704463][ T5096] Call Trace: [ 87.705768][ T5096] [ 87.706878][ T5096] ? __die_body+0x88/0xe0 [ 87.708471][ T5096] ? die_addr+0x108/0x140 [ 87.710141][ T5096] ? exc_general_protection+0x3dd/0x5d0 [ 87.712511][ T5096] ? asm_exc_general_protection+0x26/0x30 [ 87.714590][ T5096] ? ocfs2_dx_dir_name_hash+0xf7/0xc40 [ 87.716513][ T5096] ? ocfs2_prepare_dir_for_insert+0x62b/0x5c70 [ 87.718955][ T5096] ? ocfs2_prepare_dir_for_insert+0x3309/0x5c70 [ 87.721394][ T5096] ? rcu_is_watching+0x15/0xb0 [ 87.723247][ T5096] ? __pfx_lock_release+0x10/0x10 [ 87.725175][ T5096] ? __pfx_ocfs2_validate_inode_block+0x10/0x10 [ 87.727476][ T5096] ? __pfx_ocfs2_read_blocks+0x10/0x10 [ 87.729694][ T5096] ? __pfx_ocfs2_prepare_dir_for_insert+0x10/0x10 [ 87.732382][ T5096] ? ocfs2_buffer_cached+0x47e/0x840 [ 87.734573][ T5096] ? rcu_is_watching+0x15/0xb0 [ 87.736437][ T5096] ? ocfs2_search_dirblock+0x376/0x830 [ 87.738514][ T5096] ? ocfs2_read_inode_block+0x14c/0x1e0 [ 87.740639][ T5096] ? __pfx_ocfs2_search_dirblock+0x10/0x10 [ 87.743181][ T5096] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 87.745811][ T5096] ? __brelse+0x59/0xa0 [ 87.747622][ T5096] ? ocfs2_find_entry+0x102f/0x2780 [ 87.749655][ T5096] ? ocfs2_buffer_cached+0x47e/0x840 [ 87.751711][ T5096] ? ocfs2_read_blocks+0x1246/0x1620 [ 87.753774][ T5096] ? __pfx_ocfs2_find_entry+0x10/0x10 [ 87.755799][ T5096] ? __pfx_ocfs2_validate_inode_block+0x10/0x10 [ 87.758177][ T5096] ? __pfx_ocfs2_read_blocks+0x10/0x10 [ 87.760282][ T5096] ? __pfx_lock_acquire+0x10/0x10 [ 87.762320][ T5096] ? ocfs2_inode_lock_full_nested+0x17b/0x1c10 [ 87.764594][ T5096] ? ocfs2_read_inode_block+0x14c/0x1e0 [ 87.766749][ T5096] ? __pfx_ocfs2_read_inode_block+0x10/0x10 [ 87.769007][ T5096] ? do_raw_spin_unlock+0x58/0x8b0 [ 87.771019][ T5096] ? ocfs2_inode_lock_full_nested+0xb2f/0x1c10 [ 87.773444][ T5096] ? __pfx_ocfs2_inode_lock_full_nested+0x10/0x10 [ 87.775879][ T5096] ? __asan_memset+0x23/0x50 [ 87.777505][ T5096] ? ocfs2_check_dir_for_entry+0x2c9/0x4a0 [ 87.779641][ T5096] ? __pfx_ocfs2_check_dir_for_entry+0x10/0x10 [ 87.781915][ T5096] ? __pfx_validate_chain+0x10/0x10 [ 87.783893][ T5096] ? __pfx_lock_acquire+0x10/0x10 [ 87.785907][ T5096] ? ocfs2_mknod+0x2c7/0x2b40 [ 87.787787][ T5096] ocfs2_mknod+0xcaf/0x2b40 [ 87.789592][ T5096] ? __pfx_ocfs2_mknod+0x10/0x10 [ 87.791516][ T5096] ? __lock_acquire+0x137a/0x2040 [ 87.793462][ T5096] ? mark_lock+0x9a/0x350 [ 87.795083][ T5096] ? __lock_acquire+0x137a/0x2040 [ 87.796984][ T5096] ? devcgroup_check_permission+0x3d/0x950 [ 87.799177][ T5096] ? __pfx_lock_release+0x10/0x10 [ 87.801016][ T5096] ? devcgroup_check_permission+0x3d/0x950 [ 87.803337][ T5096] ? bpf_lsm_inode_mknod+0x9/0x10 [ 87.805354][ T5096] ? security_inode_mknod+0xcf/0x120 [ 87.807546][ T5096] vfs_mknod+0x36d/0x3b0 [ 87.809214][ T5096] do_mknodat+0x3ec/0x5b0 [ 87.810744][ T5096] ? __pfx_do_mknodat+0x10/0x10 [ 87.812459][ T5096] ? getname_flags+0x1e3/0x540 [ 87.814303][ T5096] __x64_sys_mknodat+0xa7/0xc0 [ 87.816056][ T5096] do_syscall_64+0xf3/0x230 [ 87.817673][ T5096] ? clear_bhb_loop+0x35/0x90 [ 87.819437][ T5096] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.821517][ T5096] RIP: 0033:0x7f2dafda3a99 [ 87.823183][ T5096] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 87.830209][ T5096] RSP: 002b:00007ffe336a6658 EFLAGS: 00000246 ORIG_RAX: 0000000000000103 [ 87.833284][ T5096] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2dafda3a99 [ 87.836304][ T5096] RDX: 00000000000021c0 RSI: 0000000020000040 RDI: 00000000ffffff9c [ 87.839185][ T5096] RBP: 00007f2dafe1b5f0 R08: 0000000000004480 R09: 000055555a6784c0 [ 87.842060][ T5096] R10: 0000000000000103 R11: 0000000000000246 R12: 00007ffe336a6680 [ 87.844855][ T5096] R13: 00007ffe336a68a8 R14: 431bde82d7b634db R15: 00007f2dafdec03b [ 87.847921][ T5096] [ 87.849073][ T5096] Modules linked in: [ 88.064192][ T5096] ---[ end trace 0000000000000000 ]--- [ 88.066338][ T5096] RIP: 0010:ocfs2_prepare_dir_for_insert+0x3309/0x5c70 [ 88.068832][ T5096] Code: 00 00 e8 2a 25 13 fe e9 ba 06 00 00 e8 20 25 13 fe e9 4f 01 00 00 e8 16 25 13 fe 49 8d 7f 08 49 8d 5f 09 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 bd 23 00 00 48 89 d8 48 c1 e8 03 42 0f [ 88.087110][ T5096] RSP: 0018:ffffc9000af9f020 EFLAGS: 00010202 [ 88.089390][ T5096] RAX: 0000000000000001 RBX: 0000000000000009 RCX: ffff88801e27a440 [ 88.092305][ T5096] RDX: 0000000000000000 RSI: 0000000000000400 RDI: 0000000000000008 [ 88.103090][ T5096] RBP: ffffc9000af9f830 R08: ffffffff8380395b R09: ffffffff838090a7 [ 88.106054][ T5096] R10: 0000000000000002 R11: ffff88801e27a440 R12: dffffc0000000000 [ 88.120688][ T5096] R13: ffff88803c660878 R14: f700000000000088 R15: 0000000000000000 [ 88.123564][ T5096] FS: 000055555a677380(0000) GS:ffff888020800000(0000) knlGS:0000000000000000 [ 88.126720][ T5096] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 88.129182][ T5096] CR2: 0000560bce569178 CR3: 000000001de5a000 CR4: 0000000000350ef0 [ 88.143890][ T5096] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 88.146814][ T5096] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 88.149737][ T5096] Kernel panic - not syncing: Fatal exception [ 88.152098][ T5096] Kernel Offset: disabled [ 88.153687][ T5096] Rebooting in 86400 seconds.. VM DIAGNOSIS: 04:20:42 Registers: info registers vcpu 0 CPU#0 RAX=1ffffffff2a4b160 RBX=ffffffff95258d40 RCX=0000000000000000 RDX=00000000000003fd RSI=0000000000000000 RDI=0000000000000020 RBP=0000000000000000 RSP=ffffc9000af9e6f8 R8 =ffffffff853f1136 R9 =1ffff110031d4046 R10=dffffc0000000000 R11=ffffffff853f10f0 R12=dffffc0000000000 R13=0000000000000000 R14=00000000000003fd R15=dffffc0000000000 RIP=ffffffff853f1166 RFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 ffffffff 00c00000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 ffffffff 00c00000 FS =0000 000055555a677380 ffffffff 00c00000 GS =0000 ffff888020800000 ffffffff 00c00000 LDT=0000 0000000000000000 ffffffff 00c00000 TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000001000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=0000560bce569178 CR3=000000001de5a000 CR4=00350ef0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000fffe0ff0 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 Opmask00=00000000000000c1 Opmask01=0000000000000000 Opmask02=0000000000000010 Opmask03=0000000000000000 Opmask04=00000000ffffffff Opmask05=0000000000000000 Opmask06=0000000000000000 Opmask07=0000000000000000 ZMM00=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000001 ZMM01=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007fffb0f06e40 0000003000000018 ZMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 6565656565656565 6565656565656565 ZMM03=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM04=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ff00ff0000000000 0000000000000000 ZMM05=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ffffffffffffffff ffffffffffff0000 ZMM06=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ff00ff0000000000 0000000000000000 ZMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM08=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM09=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM10=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM13=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM14=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM15=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM16=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM17=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0a0a0a0a0a0a0a0a 0a0a0a0a0a0a0a0a 0a0a0a0a0a0a0a0a 0a0a0a0a0a0a0a0a ZMM18=0000000000000000 0000000000000000 0000000000000000 0000000000000000 63614a2d6e615620 66666f206e727574 206f74207265626d 000078542f785200 ZMM19=0000000000000000 0000000000000000 0000000000000000 0000000000000000 6361402764615620 6666652064727574 2065742072656267 0000725425725200 ZMM20=0000000000000000 0000000000000000 0000000000000000 0000000000000000 626f4d2031302030 7420444948202042 532020304d455120 554d2c515b206569 ZMM21=0000000000000000 0000000000000000 0000000000000000 0000000000000000 2020312030202020 2020303336202030 3120203020202020 3436260034206463 ZMM22=0000000000000000 0000000000000000 0000000000000000 0000000000000000 622a573b5e2a2a2a 2a5157333c3f3c38 3b243b382a2a2a51 343c36003e7e7f7a ZMM23=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM24=0000000000000000 0000000000000000 0000000000000000 0000000000000000 7f65472a3b3a243a 7c2a4e43422a4859 5f2a303a7d6b786e 6362267e7f7a6463 ZMM25=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM26=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM27=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM28=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM29=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM30=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM31=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000