Warning: Permanently added '10.128.0.121' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 699.542642][ T8489] loop0: detected capacity change from 37488 to 0 [ 699.558663][ T8489] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 699.567447][ T8489] gfs2: fsid=syz:syz: Now mounting FS... [ 699.577735][ T8489] gfs2: fsid=syz:syz.0: fatal: invalid metadata block [ 699.577735][ T8489] bh = 2075 (magic number) [ 699.577735][ T8489] function = gfs2_meta_indirect_buffer, file = fs/gfs2/meta_io.c, line = 488 [ 699.598091][ T8489] gfs2: fsid=syz:syz.0: about to withdraw this file system [ 699.605519][ T8489] general protection fault, probably for non-canonical address 0xdffffc000000000e: 0000 [#1] PREEMPT SMP KASAN [ 699.617251][ T8489] KASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077] [ 699.625789][ T8489] CPU: 1 PID: 8489 Comm: syz-executor843 Not tainted 5.10.0-rc7-next-20201210-syzkaller #0 [ 699.635776][ T8489] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 699.645914][ T8489] RIP: 0010:gfs2_withdraw.cold+0xff/0xbee [ 699.651772][ T8489] Code: 00 48 c1 e0 2a 80 3c 02 00 0f 85 1c 02 00 00 4c 8b bb 08 09 00 00 b8 ff ff 37 00 48 c1 e0 2a 49 8d 7f 70 48 89 fa 48 c1 ea 03 <80> 3c 02 00 74 05 e8 52 a5 e0 f8 4d 8b 7f 70 b8 ff ff 37 00 48 c1 [ 699.671461][ T8489] RSP: 0018:ffffc9000163f370 EFLAGS: 00010202 [ 699.677521][ T8489] RAX: dffffc0000000000 RBX: ffff888014630000 RCX: 0000000000000000 [ 699.685487][ T8489] RDX: 000000000000000e RSI: ffffffff88d55304 RDI: 0000000000000070 [ 699.693450][ T8489] RBP: ffff8880146302c5 R08: 0000000000000038 R09: 0000000000000000 [ 699.701413][ T8489] R10: ffffffff88d552f3 R11: 0000000000000000 R12: ffff8880146300a8 [ 699.709380][ T8489] R13: ffff888014630348 R14: ffffffff89b1c040 R15: 0000000000000000 [ 699.717344][ T8489] FS: 0000000002082880(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 699.726267][ T8489] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 699.732887][ T8489] CR2: 00007ffb2ff0e6c0 CR3: 0000000017633000 CR4: 00000000001506e0 [ 699.740850][ T8489] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 699.748816][ T8489] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 699.756783][ T8489] Call Trace: [ 699.760059][ T8489] gfs2_meta_check_ii+0x68/0xa0 [ 699.764972][ T8489] gfs2_meta_indirect_buffer+0x3a3/0x3f0 [ 699.770663][ T8489] ? gfs2_journal_wipe+0xc00/0xc00 [ 699.775771][ T8489] gfs2_inode_refresh+0x95/0xe20 [ 699.780823][ T8489] ? inode_go_sync+0x560/0x560 [ 699.785580][ T8489] ? lock_downgrade+0x6d0/0x6d0 [ 699.790448][ T8489] inode_go_lock+0x309/0x4a0 [ 699.795042][ T8489] do_promote+0x4a0/0xbb0 [ 699.799369][ T8489] finish_xmote+0x671/0xe50 [ 699.803923][ T8489] do_xmote+0x821/0xbc0 [ 699.808070][ T8489] run_queue+0x323/0x680 [ 699.812308][ T8489] gfs2_glock_nq+0x70a/0x11a0 [ 699.817003][ T8489] gfs2_lookupi+0x314/0x630 [ 699.821505][ T8489] ? gfs2_lookup_by_inum+0x100/0x100 [ 699.826788][ T8489] ? gfs2_lookupi+0x30c/0x630 [ 699.831455][ T8489] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 699.837175][ T8489] ? crc32_body+0x348/0x5f0 [ 699.841672][ T8489] gfs2_lookup_simple+0x99/0xe0 [ 699.846573][ T8489] ? gfs2_rename2+0xa0/0xa0 [ 699.851069][ T8489] ? ip6_compressed_string+0xb20/0xb20 [ 699.856522][ T8489] init_inodes+0x3cb/0x2660 [ 699.861015][ T8489] ? do_raw_spin_lock+0x120/0x2b0 [ 699.866172][ T8489] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 699.872559][ T8489] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 699.878860][ T8489] ? vsnprintf+0x2cc/0x14f0 [ 699.883356][ T8489] ? end_bio_io_page+0x100/0x100 [ 699.888288][ T8489] ? pointer+0x930/0x930 [ 699.892624][ T8489] ? gfs2_glock_dq_uninit+0x87/0x100 [ 699.898098][ T8489] ? init_sb+0x9fd/0xd70 [ 699.902602][ T8489] ? snprintf+0xbb/0xf0 [ 699.906761][ T8489] ? vsprintf+0x30/0x30 [ 699.911160][ T8489] ? gfs2_read_super+0x1140/0x1140 [ 699.916286][ T8489] ? __debugfs_create_file+0x33d/0x4c0 [ 699.921788][ T8489] gfs2_fill_super+0x1ae8/0x2580 [ 699.926734][ T8489] ? gfs2_reconfigure+0x1030/0x1030 [ 699.931927][ T8489] ? lock_downgrade+0x6d0/0x6d0 [ 699.936779][ T8489] ? gfs2_glock_nq_num+0xf9/0x240 [ 699.941880][ T8489] ? snprintf+0xbb/0xf0 [ 699.946027][ T8489] ? vsprintf+0x30/0x30 [ 699.950205][ T8489] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 699.955920][ T8489] ? set_blocksize+0x1bb/0x400 [ 699.960680][ T8489] get_tree_bdev+0x440/0x760 [ 699.965384][ T8489] ? gfs2_reconfigure+0x1030/0x1030 [ 699.970589][ T8489] gfs2_get_tree+0x4a/0x270 [ 699.975269][ T8489] vfs_get_tree+0x89/0x2f0 [ 699.979683][ T8489] path_mount+0x12ae/0x1e70 [ 699.984183][ T8489] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 699.990439][ T8489] ? strncpy_from_user+0x2a0/0x3e0 [ 699.995725][ T8489] ? finish_automount+0xb20/0xb20 [ 700.000744][ T8489] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 700.006976][ T8489] ? getname_flags.part.0+0x1dd/0x4f0 [ 700.012570][ T8489] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 700.019023][ T8489] __x64_sys_mount+0x27f/0x300 [ 700.023871][ T8489] ? copy_mnt_ns+0xae0/0xae0 [ 700.028452][ T8489] ? syscall_enter_from_user_mode+0x1d/0x50 [ 700.034376][ T8489] do_syscall_64+0x2d/0x70 [ 700.038807][ T8489] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 700.044696][ T8489] RIP: 0033:0x45b45a [ 700.048580][ T8489] Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 fd ad fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 da ad fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 700.068265][ T8489] RSP: 002b:00007ffd26fb7da8 EFLAGS: 00000293 ORIG_RAX: 00000000000000a5 [ 700.076728][ T8489] RAX: ffffffffffffffda RBX: 00007ffd26fb7e00 RCX: 000000000045b45a [ 700.084914][ T8489] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffd26fb7dc0 [ 700.092878][ T8489] RBP: 00007ffd26fb7dc0 R08: 00007ffd26fb7e00 R09: 00007ffd00000015 [ 700.100841][ T8489] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000919 [ 700.108802][ T8489] R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 [ 700.116779][ T8489] Modules linked in: [ 700.121437][ T8489] ---[ end trace 5e9ca8741cca3cbd ]--- [ 700.126906][ T8489] RIP: 0010:gfs2_withdraw.cold+0xff/0xbee [ 700.132764][ T8489] Code: 00 48 c1 e0 2a 80 3c 02 00 0f 85 1c 02 00 00 4c 8b bb 08 09 00 00 b8 ff ff 37 00 48 c1 e0 2a 49 8d 7f 70 48 89 fa 48 c1 ea 03 <80> 3c 02 00 74 05 e8 52 a5 e0 f8 4d 8b 7f 70 b8 ff ff 37 00 48 c1 [ 700.152621][ T8489] RSP: 0018:ffffc9000163f370 EFLAGS: 00010202 [ 700.158708][ T8489] RAX: dffffc0000000000 RBX: ffff888014630000 RCX: 0000000000000000 [ 700.166737][ T8489] RDX: 000000000000000e RSI: ffffffff88d55304 RDI: 0000000000000070 [ 700.174779][ T8489] RBP: ffff8880146302c5 R08: 0000000000000038 R09: 0000000000000000 [ 700.183131][ T8489] R10: ffffffff88d552f3 R11: 0000000000000000 R12: ffff8880146300a8 [ 700.191561][ T8489] R13: ffff888014630348 R14: ffffffff89b1c040 R15: 0000000000000000 [ 700.200024][ T8489] FS: 0000000002082880(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 700.208975][ T8489] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 700.216339][ T8489] CR2: 00007fc077b48000 CR3: 0000000017633000 CR4: 00000000001506f0 [ 700.224621][ T8489] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 700.232796][ T8489] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 700.240876][ T8489] Kernel panic - not syncing: Fatal exception [ 700.247709][ T8489] Kernel Offset: disabled [ 700.252047][ T8489] Rebooting in 86400 seconds..