Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 45.204178] can: request_module (can-proto-0) failed. [ 45.208077] can: request_module (can-proto-0) failed. [ 45.977160] IPVS: ftp: loaded support on port[0] = 21 [ 46.228040] 8021q: adding VLAN 0 to HW filter on device bond0 [ 46.259559] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 46.414890] tipc: TX() has been purged, node left! [ 47.037267] bond0 (unregistering): Released all slaves Warning: Permanently added '10.128.10.46' (ECDSA) to the list of known hosts. 2020/07/26 15:35:22 parsed 1 programs 2020/07/26 15:35:22 executed programs: 0 [ 52.952595] IPVS: ftp: loaded support on port[0] = 21 [ 52.953912] IPVS: ftp: loaded support on port[0] = 21 [ 52.975478] IPVS: ftp: loaded support on port[0] = 21 [ 52.975632] IPVS: ftp: loaded support on port[0] = 21 [ 53.004207] IPVS: ftp: loaded support on port[0] = 21 [ 53.008855] hfs: unable to locate alternate MDB [ 53.011452] hfs: unable to locate alternate MDB [ 53.014200] hfs: continuing without an alternate MDB [ 53.018846] hfs: continuing without an alternate MDB [ 53.019640] IPVS: ftp: loaded support on port[0] = 21 [ 53.041613] hfs: new node 0 already hashed? [ 53.044739] hfs: new node 0 already hashed? [ 53.046174] ------------[ cut here ]------------ [ 53.050461] ------------[ cut here ]------------ [ 53.055221] WARNING: CPU: 1 PID: 3660 at fs/hfs/bnode.c:416 hfs_bnode_create.cold.13+0xe/0x1b [ 53.059975] WARNING: CPU: 0 PID: 3659 at fs/hfs/bnode.c:416 hfs_bnode_create.cold.13+0xe/0x1b [ 53.059977] Kernel panic - not syncing: panic_on_warn set ... [ 53.059981] CPU: 0 PID: 3659 Comm: syz-executor3 Not tainted 5.8.0-rc6-syzkaller #0 [ 53.059983] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.069095] Modules linked in: [ 53.077710] Call Trace: [ 53.077718] dump_stack+0xb9/0xf1 [ 53.077723] panic+0x115/0x30c [ 53.077729] ? hfs_bnode_create.cold.13+0xe/0x1b [ 53.083615] CPU: 1 PID: 3660 Comm: syz-executor1 Not tainted 5.8.0-rc6-syzkaller #0 [ 53.091386] __warn.cold.13+0x20/0x26 [ 53.091390] ? hfs_bnode_create.cold.13+0xe/0x1b [ 53.091393] report_bug+0xc5/0x100 [ 53.091398] handle_bug+0x39/0xa0 [ 53.091401] exc_invalid_op+0x18/0x70 [ 53.100751] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.103904] asm_exc_invalid_op+0x12/0x20 [ 53.103908] RIP: 0010:hfs_bnode_create.cold.13+0xe/0x1b [ 53.103911] Code: f6 e8 9a 2a c7 ff e9 22 f6 ff ff 48 c7 c7 f0 46 99 83 e8 89 2a c7 ff e9 1a fd ff ff 89 de 48 c7 c7 40 47 99 83 e8 76 2a c7 ff <0f> 0b e9 47 ff ff ff cc cc cc cc cc cc 55 48 89 e5 41 57 41 56 49 [ 53.103913] RSP: 0018:ffffc900003cbbd0 EFLAGS: 00010246 [ 53.103915] RAX: 000000000000001f RBX: 0000000000000000 RCX: 0000000000000000 [ 53.103917] RDX: 0000000000000000 RSI: ffff888218418e20 RDI: ffff888218418e20 [ 53.106492] RIP: 0010:hfs_bnode_create.cold.13+0xe/0x1b [ 53.109922] RBP: ffffc900003cbc00 R08: 0000000000000000 R09: 0000000000000000 [ 53.109923] R10: 0000000000000001 R11: 0000000000000000 R12: ffff8882095720e0 [ 53.109925] R13: ffff888209552f00 R14: ffff888209572000 R15: ffff888209552f00 [ 53.109936] hfs_bmap_alloc+0x218/0x270 [ 53.109941] hfs_bnode_split+0x37/0x390 [ 53.113206] Code: f6 e8 9a 2a c7 ff e9 22 f6 ff ff 48 c7 c7 f0 46 99 83 e8 89 2a c7 ff e9 1a fd ff ff 89 de 48 c7 c7 40 47 99 83 e8 76 2a c7 ff <0f> 0b e9 47 ff ff ff cc cc cc cc cc cc 55 48 89 e5 41 57 41 56 49 [ 53.117926] ? _cond_resched+0x14/0x30 [ 53.117932] hfs_brec_insert+0xce/0x370 [ 53.117938] hfs_cat_create+0x298/0x2f0 [ 53.117946] hfs_mkdir+0x3c/0xa0 [ 53.125826] RSP: 0018:ffffc90000367bd0 EFLAGS: 00010246 [ 53.129595] vfs_mkdir+0x10d/0x1e0 [ 53.129599] do_mkdirat+0xe3/0x110 [ 53.129604] __x64_sys_mkdir+0x16/0x20 [ 53.129606] do_syscall_64+0x6e/0xf0 [ 53.129610] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 53.134352] RAX: 000000000000001f RBX: 0000000000000000 RCX: 0000000000000000 [ 53.137861] RIP: 0033:0x4554a9 [ 53.137865] Code: 9d b9 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 6b b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 53.137867] RSP: 002b:00007f7baca3fc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 53.137869] RAX: ffffffffffffffda RBX: 00007f7baca406d4 RCX: 00000000004554a9 [ 53.137871] RDX: 0000000000000000 RSI: 0000000000000021 RDI: 0000000020000180 [ 53.137872] RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 [ 53.137874] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 53.137876] R13: 00000000000003ea R14: 00000000006f8e90 R15: 0000000000000000 [ 53.141336] RDX: 0000000000000000 RSI: ffff888218518e20 RDI: ffff888218518e20 [ 53.156211] Kernel Offset: disabled [ 53.387341] Rebooting in 86400 seconds..