Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 44.803075] can: request_module (can-proto-0) failed. [ 44.807828] can: request_module (can-proto-0) failed. [ 45.677248] IPVS: ftp: loaded support on port[0] = 21 [ 46.330877] 8021q: adding VLAN 0 to HW filter on device bond0 [ 46.398235] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 46.783992] tipc: TX() has been purged, node left! [ 48.199167] bond0 (unregistering): Released all slaves Warning: Permanently added '10.128.10.18' (ECDSA) to the list of known hosts. 2020/06/15 22:02:08 parsed 1 programs 2020/06/15 22:02:08 executed programs: 0 [ 54.204672] IPVS: ftp: loaded support on port[0] = 21 [ 54.207885] IPVS: ftp: loaded support on port[0] = 21 [ 54.216275] IPVS: ftp: loaded support on port[0] = 21 [ 54.222504] IPVS: ftp: loaded support on port[0] = 21 [ 54.240488] IPVS: ftp: loaded support on port[0] = 21 [ 54.245902] IPVS: ftp: loaded support on port[0] = 21 [ 54.412241] hfs: unable to locate alternate MDB [ 54.417126] hfs: continuing without an alternate MDB [ 54.440145] hfs: unable to locate alternate MDB [ 54.443695] hfs: unable to locate alternate MDB [ 54.444930] hfs: continuing without an alternate MDB [ 54.454787] hfs: continuing without an alternate MDB [ 54.467828] hfs: unable to locate alternate MDB [ 54.472585] hfs: continuing without an alternate MDB [ 54.478742] hfs: new node 0 already hashed? [ 54.478968] hfs: unable to locate alternate MDB [ 54.483383] ------------[ cut here ]------------ [ 54.483385] WARNING: CPU: 0 PID: 3752 at fs/hfs/bnode.c:416 hfs_bnode_create.cold.15+0xe/0x15 [ 54.483387] Kernel panic - not syncing: panic_on_warn set ... [ 54.483388] CPU: 0 PID: 3752 Comm: syz-executor3 Not tainted 5.8.0-rc1-syzkaller #0 [ 54.483389] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.483390] Call Trace: [ 54.483391] dump_stack+0x136/0x187 [ 54.483392] ? hfs_bnode_create.cold.15+0xe/0x15 [ 54.483393] panic+0x22a/0x4f5 [ 54.483394] ? __warn_printk+0xd6/0xd6 [ 54.483395] ? hfs_bnode_create.cold.15+0xe/0x15 [ 54.483396] __warn.cold.12+0x25/0x25 [ 54.483397] ? hfs_bnode_create.cold.15+0xe/0x15 [ 54.483398] report_bug+0x1b5/0x260 [ 54.483399] exc_invalid_op+0x1be/0x370 [ 54.483400] asm_exc_invalid_op+0x12/0x20 [ 54.483401] RIP: 0010:hfs_bnode_create.cold.15+0xe/0x15 [ 54.483403] Code: db e8 ba fd 54 ff e9 14 e0 ff ff 48 c7 c7 60 40 7b 87 e8 a9 fd 54 ff e9 9f f6 ff ff 89 de 48 c7 c7 a0 40 7b 87 e8 96 fd 54 ff <0f> 0b e9 de fe ff ff 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 41 [ 54.483404] RSP: 0018:ffff8881c8da7898 EFLAGS: 00010282 [ 54.483407] RAX: 000000000000001f RBX: 0000000000000000 RCX: ffffffff82e3aaae [ 54.483408] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8881db0281ac [ 54.483409] RBP: ffff8881c8da78e0 R08: ffffed103b606325 R09: ffffed103b606325 [ 54.483411] R10: ffff8881db031927 R11: ffffed103b606324 R12: ffff8881c86ae0e0 [ 54.483412] R13: dffffc0000000000 R14: ffff8881d113ed00 R15: ffff8881d113ed00 [ 54.483413] ? llist_add_batch+0x5e/0xa0 [ 54.483414] ? hfs_bnode_create.cold.15+0xe/0x15 [ 54.483415] hfs_bmap_alloc+0x42f/0x5e0 [ 54.483416] ? hfs_bmap_reserve+0x3b0/0x3b0 [ 54.483417] ? memcpy+0x4d/0x60 [ 54.483417] ? hfs_bnode_read+0xbf/0xf0 [ 54.483418] hfs_bnode_split+0xbd/0xe20 [ 54.483419] ? memcpy+0x4d/0x60 [ 54.483420] ? hfs_bnode_read+0xbf/0xf0 [ 54.483421] ? hfs_bnode_create.cold.15+0x15/0x15 [ 54.483422] ? hfs_bnode_read_u16+0x62/0x90 [ 54.483423] ? hfs_bnode_read+0xf0/0xf0 [ 54.483424] ? hfs_find_exit+0xc0/0xc0 [ 54.483425] hfs_brec_insert+0x2f0/0xbb0 [ 54.483426] ? hfs_brec_keylen+0x330/0x330 [ 54.483427] hfs_cat_create+0x6ae/0x8a0 [ 54.483428] ? hfs_cat_build_key+0x180/0x180 [ 54.483429] ? hfs_new_inode+0x4b5/0xd20 [ 54.483430] hfs_mkdir+0x57/0xc0 [ 54.483431] vfs_mkdir+0x384/0x610 [ 54.483432] do_mkdirat+0x1b7/0x210 [ 54.483433] ? __ia32_sys_mknod+0xb0/0xb0 [ 54.483434] ? rcu_read_lock_any_held.part.8+0x50/0x50 [ 54.483434] ? do_syscall_64+0x20/0xf0 [ 54.483435] __x64_sys_mkdir+0x57/0x80 [ 54.483437] do_syscall_64+0x6e/0xf0 [ 54.483438] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 54.483439] RIP: 0033:0x455429 [ 54.483440] Code: Bad RIP value. [ 54.483440] RSP: 002b:00007f1137cf7c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 54.483443] RAX: ffffffffffffffda RBX: 00007f1137cf86d4 RCX: 0000000000455429 [ 54.483444] RDX: 0000000000000000 RSI: 0000000000000021 RDI: 0000000020000180 [ 54.483445] RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 [ 54.483447] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 54.483448] R13: 00000000000003ea R14: 00000000006f8e90 R15: 0000000000000000 [ 54.488730] Kernel Offset: disabled