Warning: Permanently added '10.128.10.27' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 36.652866] EXT4-fs error (device loop0): ext4_fill_super:4450: inode #2: comm syz-executor143: iget: root inode unallocated [ 36.665375] EXT4-fs (loop0): get root inode failed [ 36.672677] EXT4-fs (loop0): mount failed [ 36.682132] EXT4-fs error (device loop2): ext4_fill_super:4450: inode #2: comm syz-executor143: iget: root inode unallocated [ 36.694160] EXT4-fs (loop2): get root inode failed [ 36.699543] EXT4-fs (loop2): mount failed executing program [ 36.820036] EXT4-fs error (device loop5): ext4_fill_super:4450: inode #2: comm syz-executor143: iget: root inode unallocated [ 36.820059] EXT4-fs error (device loop3): ext4_fill_super:4450: inode #2: comm syz-executor143: iget: root inode unallocated [ 36.832591] EXT4-fs (loop5): get root inode failed [ 36.845571] EXT4-fs (loop3): get root inode failed [ 36.848553] EXT4-fs (loop5): mount failed [ 36.855716] EXT4-fs (loop3): mount failed [ 36.865954] EXT4-fs error (device loop1): ext4_fill_super:4450: inode #2: comm syz-executor143: iget: root inode unallocated [ 36.878707] EXT4-fs (loop1): get root inode failed [ 36.883743] EXT4-fs (loop1): mount failed executing program executing program executing program executing program executing program [ 37.071096] EXT4-fs error (device loop0): ext4_fill_super:4450: inode #2: comm syz-executor143: iget: root inode unallocated [ 37.082755] EXT4-fs (loop0): get root inode failed [ 37.087759] EXT4-fs (loop0): mount failed [ 37.219588] EXT4-fs error (device loop4): ext4_fill_super:4450: inode #2: comm syz-executor143: iget: root inode unallocated [ 37.231268] EXT4-fs (loop4): get root inode failed [ 37.236238] EXT4-fs (loop4): mount failed executing program [ 37.379653] EXT4-fs error (device loop1): ext4_fill_super:4450: inode #2: comm syz-executor143: iget: root inode unallocated [ 37.391441] EXT4-fs (loop1): get root inode failed [ 37.396454] EXT4-fs (loop1): mount failed executing program [ 37.421326] EXT4-fs error (device loop5): ext4_fill_super:4450: inode #2: comm syz-executor143: iget: root inode unallocated [ 37.433785] EXT4-fs error (device loop3): ext4_fill_super:4450: inode #2: comm syz-executor143: iget: root inode unallocated [ 37.455387] EXT4-fs (loop5): get root inode failed [ 37.458695] EXT4-fs (loop3): get root inode failed [ 37.460687] EXT4-fs (loop5): mount failed [ 37.467317] EXT4-fs (loop3): mount failed executing program executing program executing program executing program [ 37.602699] EXT4-fs error (device loop0): ext4_fill_super:4450: inode #2: comm syz-executor143: iget: root inode unallocated [ 37.614462] EXT4-fs (loop0): get root inode failed [ 37.619923] EXT4-fs (loop0): mount failed [ 37.639790] EXT4-fs error (device loop2): ext4_fill_super:4450: inode #2: comm syz-executor143: iget: root inode unallocated [ 37.651499] EXT4-fs (loop2): get root inode failed [ 37.656510] EXT4-fs (loop2): mount failed executing program executing program executing program [ 37.924189] EXT4-fs error (device loop1): ext4_fill_super:4450: inode #2: comm syz-executor143: iget: root inode unallocated [ 37.935856] EXT4-fs error (device loop4): ext4_fill_super:4450: inode #2: comm syz-executor143: iget: root inode unallocated [ 37.953196] EXT4-fs (loop1): get root inode failed [ 37.961201] EXT4-fs (loop4): get root inode failed [ 37.966712] EXT4-fs (loop4): mount failed [ 37.971286] EXT4-fs error (device loop5): ext4_fill_super:4450: inode #2: comm syz-executor143: iget: root inode unallocated [ 37.986288] EXT4-fs (loop1): mount failed [ 37.998538] EXT4-fs (loop5): get root inode failed [ 38.003689] EXT4-fs (loop5): mount failed executing program executing program [ 38.259318] EXT4-fs error (device loop2): ext4_fill_super:4450: inode #2: comm syz-executor143: iget: root inode unallocated [ 38.270975] EXT4-fs (loop2): get root inode failed [ 38.275979] EXT4-fs (loop2): mount failed executing program [ 38.301756] EXT4-fs warning (device loop0): ext4_multi_mount_protect:386: Unable to create kmmpd thread for loop0. [ 38.315661] EXT4-fs error (device loop3): ext4_fill_super:4450: inode #2: comm syz-executor143: iget: root inode unallocated [ 38.327410] EXT4-fs (loop3): get root inode failed [ 38.332863] EXT4-fs (loop3): mount failed [ 38.354614] EXT4-fs error (device loop4): ext4_fill_super:4450: inode #2: comm syz-executor143: iget: root inode unallocated [ 38.366270] EXT4-fs (loop4): get root inode failed [ 38.371383] EXT4-fs (loop4): mount failed executing program executing program executing program [ 38.599050] EXT4-fs error (device loop5): ext4_fill_super:4450: inode #2: comm syz-executor143: iget: root inode unallocated [ 38.610713] EXT4-fs (loop5): get root inode failed [ 38.615642] EXT4-fs (loop5): mount failed executing program [ 38.699337] EXT4-fs error (device loop1): ext4_fill_super:4450: inode #2: comm syz-executor143: iget: root inode unallocated [ 38.711081] EXT4-fs (loop1): get root inode failed [ 38.716086] EXT4-fs (loop1): mount failed executing program executing program [ 39.010945] EXT4-fs error (device loop0): ext4_fill_super:4450: inode #2: comm syz-executor143: iget: root inode unallocated [ 39.022710] EXT4-fs error (device loop2): ext4_fill_super:4450: inode #2: comm syz-executor143: iget: root inode unallocated [ 39.035630] EXT4-fs (loop0): get root inode failed [ 39.040851] EXT4-fs (loop0): mount failed [ 39.045764] EXT4-fs (loop2): get root inode failed [ 39.064044] EXT4-fs warning (device loop4): ext4_multi_mount_protect:386: Unable to create kmmpd thread for loop4. [ 39.072646] EXT4-fs (loop2): mount failed [ 39.088931] EXT4-fs error (device loop3): ext4_fill_super:4450: inode #2: comm syz-executor143: iget: root inode unallocated [ 39.100931] EXT4-fs (loop3): get root inode failed [ 39.105884] EXT4-fs (loop3): mount failed [ 39.143080] EXT4-fs error (device loop5): ext4_fill_super:4450: inode #2: comm syz-executor143: iget: root inode unallocated [ 39.154820] EXT4-fs (loop5): get root inode failed [ 39.162218] EXT4-fs (loop5): mount failed executing program executing program executing program executing program [ 39.379748] EXT4-fs error (device loop1): ext4_fill_super:4450: inode #2: comm syz-executor143: iget: root inode unallocated [ 39.392133] EXT4-fs (loop1): get root inode failed [ 39.397131] EXT4-fs (loop1): mount failed executing program executing program [ 39.617972] ------------[ cut here ]------------ [ 39.622747] kernel BUG at fs/buffer.c:3049! [ 39.627068] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 39.632433] CPU: 1 PID: 8484 Comm: syz-executor143 Not tainted 4.19.211-syzkaller #0 [ 39.640291] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.649679] RIP: 0010:submit_bh_wbc+0x5e5/0x760 [ 39.654331] Code: 10 4c 8d 7b 20 48 89 44 24 08 e9 3e fc ff ff e8 41 98 b1 ff f0 80 63 01 f7 e9 4d fb ff ff e8 32 98 b1 ff 0f 0b e8 2b 98 b1 ff <0f> 0b e8 24 98 b1 ff 0f 0b e8 1d 98 b1 ff 0f 0b e8 16 98 b1 ff 0f [ 39.673215] RSP: 0018:ffff88809f1ef8f8 EFLAGS: 00010293 [ 39.678556] RAX: ffff8880a86d03c0 RBX: ffff88808a40cbd0 RCX: ffffffff81b0e7d1 [ 39.685821] RDX: 0000000000000000 RSI: ffffffff81b0ed45 RDI: 0000000000000001 [ 39.693076] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 39.700344] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000003000 [ 39.707598] R13: 0000000000000000 R14: 0000000000000000 R15: 000000001ac3f9cf [ 39.714855] FS: 00007f61dd00b700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 39.723064] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.728928] CR2: 00007f61dd0b0088 CR3: 00000000aac72000 CR4: 00000000003406e0 [ 39.736180] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.743426] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.750671] Call Trace: [ 39.753246] read_mmp_block+0x133/0x610 [ 39.757201] ext4_multi_mount_protect+0x4f6/0xac0 [ 39.762023] ? __dump_mmp_msg+0xa0/0xa0 [ 39.765975] ? __lockdep_init_map+0x100/0x5a0 [ 39.770466] ? __lockdep_init_map+0x100/0x5a0 [ 39.774940] ext4_fill_super+0xa050/0xc850 [ 39.779161] ? ext4_calculate_overhead+0x11c0/0x11c0 [ 39.784252] ? snprintf+0xbb/0xf0 [ 39.787689] ? wait_for_completion_io+0x10/0x10 [ 39.792336] ? set_blocksize+0x163/0x3f0 [ 39.796388] mount_bdev+0x2fc/0x3b0 [ 39.799999] ? ext4_calculate_overhead+0x11c0/0x11c0 [ 39.805084] mount_fs+0xa3/0x310 [ 39.808451] vfs_kern_mount.part.0+0x68/0x470 [ 39.812935] do_mount+0x115c/0x2f50 [ 39.816550] ? lock_acquire+0x170/0x3c0 [ 39.820506] ? check_preemption_disabled+0x41/0x280 [ 39.825502] ? copy_mount_string+0x40/0x40 [ 39.829717] ? copy_mount_options+0x59/0x380 [ 39.834107] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 39.839103] ? kmem_cache_alloc_trace+0x323/0x380 [ 39.843925] ? copy_mount_options+0x26f/0x380 [ 39.848409] ksys_mount+0xcf/0x130 [ 39.851931] __x64_sys_mount+0xba/0x150 [ 39.855884] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 39.860446] do_syscall_64+0xf9/0x620 [ 39.864230] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 39.869400] RIP: 0033:0x7f61dd0603da [ 39.873091] Code: 48 c7 c2 b8 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 b8 ff ff ff f7 d8 64 89 01 48 [ 39.891971] RSP: 002b:00007f61dd00b108 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 39.899667] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f61dd0603da [ 39.906916] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f61dd00b170 [ 39.914183] RBP: 0000000000000004 R08: 00007f61dd00b1b0 R09: 0000000000000000 [ 39.921484] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000 [ 39.928733] R13: 00000000200002f0 R14: 00007f61dd00b170 R15: 0000000020000100 [ 39.935982] Modules linked in: [ 39.948013] ---[ end trace 4f0cc6f7bbbcc78f ]--- [ 39.952857] RIP: 0010:submit_bh_wbc+0x5e5/0x760 executing program executing program executing program [ 39.958469] Code: 10 4c 8d 7b 20 48 89 44 24 08 e9 3e fc ff ff e8 41 98 b1 ff f0 80 63 01 f7 e9 4d fb ff ff e8 32 98 b1 ff 0f 0b e8 2b 98 b1 ff <0f> 0b e8 24 98 b1 ff 0f 0b e8 1d 98 b1 ff 0f 0b e8 16 98 b1 ff 0f [ 39.995058] kasan: CONFIG_KASAN_INLINE enabled [ 40.001430] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 40.006522] EXT4-fs error (device loop3): ext4_fill_super:4450: inode #2: comm syz-executor143: iget: root inode unallocated [ 40.014837] general protection fault: 0000 [#2] PREEMPT SMP KASAN [ 40.022666] EXT4-fs error (device loop5): ext4_fill_super:4450: inode #2: comm syz-executor143: iget: root inode unallocated [ 40.026559] CPU: 1 PID: 8533 Comm: kmmpd-loop5 Tainted: G D 4.19.211-syzkaller #0 [ 40.046538] EXT4-fs (loop3): get root inode failed [ 40.046783] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.046801] RIP: 0010:bdevname+0x29/0x110 [ 40.046815] Code: 00 41 55 41 54 49 89 f4 55 53 48 89 fb e8 df 46 fb fd 48 8d bb d0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 c7 00 00 00 48 8b ab d0 00 00 00 48 b8 00 00 00 [ 40.054243] EXT4-fs (loop5): get root inode failed [ 40.061057] RSP: 0018:ffff88808f897dd8 EFLAGS: 00010202 [ 40.061068] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff88808aeba400 [ 40.061074] RDX: 000000000000001a RSI: ffffffff83673e91 RDI: 00000000000000d0 [ 40.061080] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 40.061087] R10: 0000000000000001 R11: 0000000000000000 R12: ffff88808aeba450 [ 40.061093] R13: dffffc0000000000 R14: ffff8880912b0e40 R15: ffff88808aeba400 [ 40.061101] FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 40.061108] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.061118] CR2: 0000000020000080 CR3: 0000000097e7b000 CR4: 00000000003406e0 [ 40.068379] EXT4-fs (loop3): mount failed [ 40.084160] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.084167] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.084171] Call Trace: [ 40.084188] kmmpd+0x279/0xa80 [ 40.084202] ? lock_downgrade+0x720/0x720 [ 40.084216] ? write_mmp_block+0x310/0x310 [ 40.091156] EXT4-fs (loop5): mount failed [ 40.094472] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 40.094484] ? __kthread_parkme+0x133/0x1e0 [ 40.094499] ? write_mmp_block+0x310/0x310 [ 40.103464] RSP: 0018:ffff88809f1ef8f8 EFLAGS: 00010293 [ 40.109000] kthread+0x33f/0x460 [ 40.109011] ? kthread_park+0x180/0x180 [ 40.109020] ? kthread_park+0x180/0x180 [ 40.109033] ret_from_fork+0x24/0x30 [ 40.109042] Modules linked in: [ 40.110305] ---[ end trace 4f0cc6f7bbbcc790 ]--- [ 40.121794] RAX: ffff8880a86d03c0 RBX: ffff88808a40cbd0 RCX: ffffffff81b0e7d1 [ 40.125374] RIP: 0010:submit_bh_wbc+0x5e5/0x760 [ 40.132099] RDX: 0000000000000000 RSI: ffffffff81b0ed45 RDI: 0000000000000001 [ 40.146699] Code: 10 4c 8d 7b 20 48 89 44 24 08 e9 3e fc ff ff e8 41 98 b1 ff f0 80 63 01 f7 e9 4d fb ff ff e8 32 98 b1 ff 0f 0b e8 2b 98 b1 ff <0f> 0b e8 24 98 b1 ff 0f 0b e8 1d 98 b1 ff 0f 0b e8 16 98 b1 ff 0f [ 40.154595] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 40.157553] RSP: 0018:ffff88809f1ef8f8 EFLAGS: 00010293 [ 40.164630] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000003000 [ 40.171462] RAX: ffff8880a86d03c0 RBX: ffff88808a40cbd0 RCX: ffffffff81b0e7d1 [ 40.174361] R13: 0000000000000000 R14: 0000000000000000 R15: 000000001ac3f9cf [ 40.176998] RDX: 0000000000000000 RSI: ffffffff81b0ed45 RDI: 0000000000000001 [ 40.181824] FS: 00007f61dd00b700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 40.186482] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 40.190781] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.195157] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000003000 [ 40.199987] CR2: 00007f61dcfea718 CR3: 00000000aac72000 CR4: 00000000003406f0 [ 40.203652] R13: 0000000000000000 R14: 0000000000000000 R15: 000000001ac3f9cf [ 40.209546] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.231545] FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 40.233632] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.250858] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.253160] Kernel panic - not syncing: Fatal exception [ 40.278153] CR2: 00007f61dcfc9718 CR3: 00000000a468d000 CR4: 00000000003406e0 [ 40.282606] Kernel Offset: disabled [ 40.399508] Rebooting in 86400 seconds..