IPVS: ftp: loaded support on port[0] = 21 hfs: unable to locate alternate MDB hfs: continuing without an alternate MDB hfs: new node 0 already hashed? ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4453 at fs/hfs/bnode.c:416 hfs_bnode_create.cold.13+0xe/0x15 fs/hfs/bnode.c:415 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 4453 Comm: syz-executor Not tainted 5.6.0-rc1-syzkaller #0 hfs: unable to locate alternate MDB Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 hfs: continuing without an alternate MDB Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x12f/0x187 lib/dump_stack.c:118 panic+0x22a/0x4f5 kernel/panic.c:221 __warn.cold.10+0x25/0x28 kernel/panic.c:582 report_bug+0x1b0/0x270 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:286 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 hfs: unable to locate alternate MDB RIP: 0010:hfs_bnode_create.cold.13+0xe/0x15 fs/hfs/bnode.c:416 Code: db e8 ea ad 58 ff e9 5e e0 ff ff 48 c7 c7 20 b1 3a 87 e8 d9 ad 58 ff e9 8f f6 ff ff 89 de 48 c7 c7 60 b1 3a 87 e8 c6 ad 58 ff <0f> 0b e9 c8 fe ff ff 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 41 RSP: 0018:ffff8881c4d77880 EFLAGS: 00010282 RAX: 000000000000001f RBX: 0000000000000000 RCX: ffffffff82dbc05e RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8881db129fac RBP: ffff8881c4d778c8 R08: ffffed103b626669 R09: ffffed103b626669 R10: ffffed103b626668 R11: ffff8881db133347 R12: ffff8881c4f360d0 R13: dffffc0000000000 R14: ffff8881d53c0f00 R15: ffff8881d53c0f00 hfs: continuing without an alternate MDB hfs_bmap_alloc+0x423/0x5d0 fs/hfs/btree.c:288 hfs: new node 0 already hashed? hfs_bnode_split+0xbd/0xe20 fs/hfs/brec.c:241 hfs_brec_insert+0x2f0/0xbb0 fs/hfs/brec.c:102 ------------[ cut here ]------------ hfs_cat_create+0x698/0x880 fs/hfs/catalog.c:131 WARNING: CPU: 0 PID: 4460 at fs/hfs/bnode.c:416 hfs_bnode_create.cold.13+0xe/0x15 fs/hfs/bnode.c:415 Modules linked in: CPU: 0 PID: 4460 Comm: syz-executor1 Not tainted 5.6.0-rc1-syzkaller #0 hfs_mkdir+0x57/0xc0 fs/hfs/dir.c:231 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 vfs_mkdir+0x384/0x600 fs/namei.c:3889 RIP: 0010:hfs_bnode_create.cold.13+0xe/0x15 fs/hfs/bnode.c:416 do_mkdirat+0x1b7/0x210 fs/namei.c:3912 Code: db e8 ea ad 58 ff e9 5e e0 ff ff 48 c7 c7 20 b1 3a 87 e8 d9 ad 58 ff e9 8f f6 ff ff 89 de 48 c7 c7 60 b1 3a 87 e8 c6 ad 58 ff <0f> 0b e9 c8 fe ff ff 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 41 RSP: 0018:ffff8881bb29f880 EFLAGS: 00010282 RAX: 000000000000001f RBX: 0000000000000000 RCX: 0000000000000006 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000282 RBP: ffff8881bb29f8c8 R08: 0000000000000006 R09: fffffbfff135472c R10: fffffbfff135472b R11: ffffffff89aa395f R12: ffff8881b863c0d0 __do_sys_mkdir fs/namei.c:3928 [inline] __se_sys_mkdir fs/namei.c:3926 [inline] __x64_sys_mkdir+0x57/0x80 fs/namei.c:3926 R13: dffffc0000000000 R14: ffff8881d17c7900 R15: ffff8881d17c7900 FS: 00007fe628eff700(0000) GS:ffff8881db000000(0000) knlGS:0000000000000000 do_syscall_64+0xd0/0x600 arch/x86/entry/common.c:294 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000072c051 CR3: 00000001c1113000 CR4: 00000000001406f0 entry_SYSCALL_64_after_hwframe+0x49/0xbe DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 RIP: 0033:0x455429 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Code: 1d ba fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 eb b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 Call Trace: RSP: 002b:00007f7a9f4b5c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 hfs_bmap_alloc+0x423/0x5d0 fs/hfs/btree.c:288 RAX: ffffffffffffffda RBX: 00007f7a9f4b66d4 RCX: 0000000000455429 RDX: 0000000000000000 RSI: 0000000000000021 RDI: 0000000020000180 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000003ea R14: 00000000006f8e90 R15: 0000000000000000 hfs_bnode_split+0xbd/0xe20 fs/hfs/brec.c:241 hfs_brec_insert+0x2f0/0xbb0 fs/hfs/brec.c:102 hfs_cat_create+0x698/0x880 fs/hfs/catalog.c:131 hfs_mkdir+0x57/0xc0 fs/hfs/dir.c:231 vfs_mkdir+0x384/0x600 fs/namei.c:3889 do_mkdirat+0x1b7/0x210 fs/namei.c:3912 __do_sys_mkdir fs/namei.c:3928 [inline] __se_sys_mkdir fs/namei.c:3926 [inline] __x64_sys_mkdir+0x57/0x80 fs/namei.c:3926 do_syscall_64+0xd0/0x600 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x455429 Code: 1d ba fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 eb b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fe628efec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007fe628eff6d4 RCX: 0000000000455429 RDX: 0000000000000000 RSI: 0000000000000021 RDI: 0000000020000180 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000003ea R14: 00000000006f8e90 R15: 0000000000000000 irq event stamp: 1134 hardirqs last enabled at (1133): [] trace_hardirqs_on_thunk+0x1a/0x1c arch/x86/entry/thunk_64.S:41 hardirqs last disabled at (1134): [] trace_hardirqs_off_thunk+0x1a/0x1c arch/x86/entry/thunk_64.S:42 softirqs last enabled at (1132): [] __do_softirq+0x68b/0x94c kernel/softirq.c:319 softirqs last disabled at (1121): [] invoke_softirq kernel/softirq.c:373 [inline] softirqs last disabled at (1121): [] irq_exit+0x1bb/0x1e0 kernel/softirq.c:413 ---[ end trace bbe9506a3e4309c2 ]--- Kernel Offset: disabled Rebooting in 86400 seconds..