Warning: Permanently added '10.128.10.6' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 36.625149] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal [ 36.634039] REISERFS (device loop0): using ordered data mode [ 36.640115] reiserfs: using flush barriers [ 36.647078] REISERFS (device loop0): journal params: device loop0, size 15748, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30 [ 36.666879] REISERFS (device loop0): checking transaction log (loop0) [ 38.063954] REISERFS (device loop0): Using tea hash to sort names [ 38.070959] BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 [ 38.079046] PGD a9de8067 P4D a9de8067 PUD 9ec36067 PMD 0 [ 38.084575] Oops: 0010 [#1] PREEMPT SMP KASAN [ 38.089053] CPU: 0 PID: 8114 Comm: syz-executor782 Not tainted 4.19.194-syzkaller #0 [ 38.096911] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.106246] RIP: 0010: (null) [ 38.110127] Code: Bad RIP value. [ 38.113471] RSP: 0018:ffff8880b31178a8 EFLAGS: 00010246 [ 38.118813] RAX: dffffc0000000000 RBX: 1ffff11016622f18 RCX: ffffffff81a5197b [ 38.126078] RDX: 0000000000000000 RSI: ffff88809609c6e0 RDI: ffff88808caaa740 [ 38.133343] RBP: ffffffff8878d700 R08: 0000000000000000 R09: 0000000000000000 [ 38.140594] R10: 0000000000000005 R11: 0000000000000000 R12: ffff88809609c6e0 [ 38.147846] R13: ffff88808caaa740 R14: ffff8880b3117a38 R15: ffff8880b31178e0 [ 38.155262] FS: 0000000001c01300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 38.163476] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.169343] CR2: ffffffffffffffd6 CR3: 00000000ab23d000 CR4: 00000000001406f0 [ 38.176614] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 38.183877] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 38.191137] Call Trace: [ 38.193714] __lookup_slow+0x246/0x4a0 [ 38.197588] ? follow_dotdot_rcu+0x1040/0x1040 [ 38.202179] ? __d_lookup+0x411/0x710 [ 38.205987] ? d_lookup+0x18e/0x250 [ 38.209597] lookup_one_len+0x163/0x190 [ 38.213647] ? try_lookup_one_len+0x180/0x180 [ 38.218131] reiserfs_lookup_privroot+0x92/0x280 [ 38.222890] reiserfs_fill_super+0x202c/0x2cf0 [ 38.227491] ? reiserfs_remount+0x1540/0x1540 [ 38.231981] ? lock_downgrade+0x720/0x720 [ 38.236112] ? snprintf+0xbb/0xf0 [ 38.239674] ? wait_for_completion_io+0x10/0x10 [ 38.244329] mount_bdev+0x2fc/0x3b0 [ 38.247962] ? reiserfs_remount+0x1540/0x1540 [ 38.252457] mount_fs+0xa3/0x310 [ 38.255824] vfs_kern_mount.part.0+0x68/0x470 [ 38.260305] do_mount+0x113c/0x2f10 [ 38.263932] ? lock_acquire+0x170/0x3c0 [ 38.267892] ? check_preemption_disabled+0x41/0x280 [ 38.272898] ? copy_mount_string+0x40/0x40 [ 38.277128] ? copy_mount_options+0x59/0x380 [ 38.281639] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 38.286660] ? kmem_cache_alloc_trace+0x323/0x380 [ 38.291507] ? copy_mount_options+0x26f/0x380 [ 38.295993] ksys_mount+0xcf/0x130 [ 38.299532] __x64_sys_mount+0xba/0x150 [ 38.303492] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 38.308056] do_syscall_64+0xf9/0x620 [ 38.311927] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 38.317122] RIP: 0033:0x445b6a [ 38.320297] Code: 48 c7 c2 c0 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 a8 00 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 38.339179] RSP: 002b:00007ffc9943bcd8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 38.346978] RAX: ffffffffffffffda RBX: 00007ffc9943bd30 RCX: 0000000000445b6a [ 38.354246] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffc9943bcf0 [ 38.361585] RBP: 00007ffc9943bcf0 R08: 00007ffc9943bd30 R09: 0000000000000000 [ 38.368855] R10: 0000000000000000 R11: 0000000000000286 R12: 00000000200002a8 [ 38.376107] R13: 0000000000000003 R14: 0000000000000004 R15: 0000000000000007 [ 38.383450] Modules linked in: [ 38.386623] CR2: 0000000000000000 [ 38.390593] ---[ end trace ad5b792898f2a955 ]--- [ 38.395346] RIP: 0010: (null) [ 38.399240] Code: Bad RIP value. [ 38.402660] RSP: 0018:ffff8880b31178a8 EFLAGS: 00010246 [ 38.408021] RAX: dffffc0000000000 RBX: 1ffff11016622f18 RCX: ffffffff81a5197b [ 38.415337] RDX: 0000000000000000 RSI: ffff88809609c6e0 RDI: ffff88808caaa740 [ 38.422660] RBP: ffffffff8878d700 R08: 0000000000000000 R09: 0000000000000000 [ 38.429984] R10: 0000000000000005 R11: 0000000000000000 R12: ffff88809609c6e0 [ 38.437244] R13: ffff88808caaa740 R14: ffff8880b3117a38 R15: ffff8880b31178e0 [ 38.444543] FS: 0000000001c01300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 38.452814] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.458683] CR2: ffffffffffffffd6 CR3: 00000000ab23d000 CR4: 00000000001406f0 [ 38.465993] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 38.473485] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 38.480887] Kernel panic - not syncing: Fatal exception [ 38.487168] Kernel Offset: disabled [ 38.490964] Rebooting in 86400 seconds..