Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 42.738477] can: request_module (can-proto-0) failed. [ 42.743597] can: request_module (can-proto-0) failed. [ 43.547092] IPVS: ftp: loaded support on port[0] = 21 [ 44.289413] 8021q: adding VLAN 0 to HW filter on device bond0 [ 44.356651] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 44.657190] tipc: TX() has been purged, node left! [ 46.285119] bond0 (unregistering): Released all slaves Warning: Permanently added '10.128.0.4' (ECDSA) to the list of known hosts. 2020/04/16 17:28:27 parsed 1 programs 2020/04/16 17:28:27 executed programs: 0 [ 51.560502] IPVS: ftp: loaded support on port[0] = 21 [ 51.584843] IPVS: ftp: loaded support on port[0] = 21 [ 51.657667] IPVS: ftp: loaded support on port[0] = 21 [ 51.697450] IPVS: ftp: loaded support on port[0] = 21 [ 51.721892] IPVS: ftp: loaded support on port[0] = 21 [ 51.750559] IPVS: ftp: loaded support on port[0] = 21 [ 51.777997] gfs2: fsid=loop1: Trying to join cluster "lock_nolock", "loop1" [ 51.785278] gfs2: fsid=loop1: Now mounting FS... [ 51.804171] gfs2: fsid=loop1.0: journal 0 mapped with 1 extents in 0ms [ 51.811294] gfs2: fsid=loop1.0: jid=0, already locked for use [ 51.817351] gfs2: fsid=loop1.0: jid=0: Looking at journal... [ 51.872047] gfs2: fsid=loop3: Trying to join cluster "lock_nolock", "loop3" [ 51.879323] gfs2: fsid=loop3: Now mounting FS... [ 51.887835] gfs2: fsid=loop3.0: journal 0 mapped with 1 extents in 0ms [ 51.896301] gfs2: fsid=loop3.0: jid=0, already locked for use [ 51.902260] gfs2: fsid=loop3.0: jid=0: Looking at journal... [ 51.911985] gfs2: fsid=loop1.0: jid=0: Journal head lookup took 94ms [ 51.964981] gfs2: fsid=loop3.0: jid=0: Journal head lookup took 62ms [ 51.972518] gfs2: fsid=loop3.0: jid=0: Done [ 51.977207] gfs2: fsid=loop3.0: first mount done, others may mount [ 52.028845] gfs2: fsid=loop1.0: jid=0: Done [ 52.033688] gfs2: fsid=loop1.0: first mount done, others may mount [ 52.085478] gfs2: fsid=loop0: Trying to join cluster "lock_nolock", "loop0" [ 52.086039] gfs2: fsid=loop3.0: found 1 quota changes [ 52.092800] gfs2: fsid=loop0: Now mounting FS... [ 52.130013] gfs2: fsid=loop4: Trying to join cluster "lock_nolock", "loop4" [ 52.137434] gfs2: fsid=loop4: Now mounting FS... RESULT: signal 0, coverage 0 errno 0 [ 52.175452] gfs2: fsid=loop4.0: journal 0 mapped with 1 extents in 0ms [ 52.183128] gfs2: fsid=loop4.0: jid=0, already locked for use [ 52.189266] gfs2: fsid=loop4.0: jid=0: Looking at journal... [ 52.212687] gfs2: fsid=loop0.0: journal 0 mapped with 1 extents in 0ms [ 52.219646] gfs2: fsid=loop0.0: jid=0, already locked for use [ 52.225959] gfs2: fsid=loop0.0: jid=0: Looking at journal... [ 52.266676] gfs2: fsid=loop2: Trying to join cluster "lock_nolock", "loop2" [ 52.272331] gfs2: fsid=loop4.0: jid=0: Journal head lookup took 83ms [ 52.273944] gfs2: fsid=loop2: Now mounting FS... [ 52.285197] gfs2: fsid=loop2.0: journal 0 mapped with 1 extents in 0ms [ 52.296689] ------------[ cut here ]------------ [ 52.301629] WARNING: CPU: 1 PID: 3826 at include/linux/backing-dev.h:349 account_page_dirtied+0x65a/0x870 [ 52.303184] gfs2: fsid=loop2.0: jid=0, already locked for use [ 52.311329] Kernel panic - not syncing: panic_on_warn set ... [ 52.317269] gfs2: fsid=loop2.0: jid=0: Looking at journal... [ 52.323126] CPU: 1 PID: 3826 Comm: syz-executor3 Not tainted 5.7.0-rc1-syzkaller #0 [ 52.323131] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.323135] Call Trace: [ 52.323150] dump_stack+0x12f/0x187 [ 52.323162] ? account_page_dirtied+0x65a/0x870 [ 52.323169] panic+0x22a/0x4f5 [ 52.323175] ? add_taint.cold.7+0x11/0x11 [ 52.323193] __warn.cold.10+0x25/0x28 [ 52.323200] ? account_page_dirtied+0x65a/0x870 [ 52.323206] report_bug+0x1b0/0x270 [ 52.323217] do_error_trap+0x11b/0x200 [ 52.380885] do_invalid_op+0x36/0x40 [ 52.384613] ? account_page_dirtied+0x65a/0x870 [ 52.387217] gfs2: fsid=loop5: Trying to join cluster "lock_nolock", "loop5" [ 52.389283] invalid_op+0x23/0x30 [ 52.389293] RIP: 0010:account_page_dirtied+0x65a/0x870 [ 52.389299] Code: c1 ea 03 80 3c 02 00 0f 85 25 02 00 00 49 8b 86 a8 01 00 00 be ff ff ff ff 48 8d 78 70 e8 fe 44 ca ff 85 c0 0f 85 60 fb ff ff <0f> 0b e9 59 fb ff ff 4c 89 ee 4c 89 f7 e8 b4 0f 29 00 e9 0a fb ff [ 52.389303] RSP: 0018:ffff8881c9f27788 EFLAGS: 00010046 [ 52.389311] RAX: 0000000000000000 RBX: ffff8881c889aa20 RCX: ffff8881ca190dc8 [ 52.396548] gfs2: fsid=loop5: Now mounting FS... [ 52.399948] RDX: 1ffffffff10e898c RSI: ffff8881d305c0e8 RDI: 0000000000000086 [ 52.399953] RBP: ffff8881c9f277b8 R08: ffffed1039113545 R09: ffffed1039113545 [ 52.399957] R10: ffff8881c889aa27 R11: ffffed1039113544 R12: ffff8881c889a878 [ 52.399960] R13: ffffea0006d2d640 R14: ffff8881c889a878 R15: 0000000000000286 [ 52.399980] ? account_page_dirtied+0x652/0x870 [ 52.399992] __set_page_dirty+0x6f/0x250 [ 52.400002] mark_buffer_dirty+0x2c4/0x3c0 [ 52.400012] gfs2_unpin+0xdf/0xe00 [ 52.400026] buf_lo_after_commit+0x129/0x210 [ 52.417949] gfs2: fsid=loop1.0: found 1 quota changes [ 52.424222] gfs2_log_flush+0x111c/0x2810 [ 52.424239] ? log_write_header+0xd90/0xd90 [ 52.424251] ? mark_held_locks+0xb7/0x130 [ 52.458101] gfs2: fsid=loop2.0: jid=0: Journal head lookup took 140ms [ 52.463572] ? kfree+0x132/0x290 [ 52.463581] ? do_sync+0x45e/0xb10 [ 52.463590] ? lockdep_hardirqs_on+0x481/0x620 [ 52.463595] ? kfree+0x132/0x290 [ 52.463603] ? trace_hardirqs_on+0x28/0x180 [ 52.463610] ? do_sync+0x45e/0xb10 [ 52.497783] gfs2: fsid=loop2.0: jid=0: Done [ 52.501450] do_sync+0x4b0/0xb10 [ 52.501466] ? gfs2_qa_put+0x130/0x130 [ 52.501475] ? do_raw_spin_lock+0x132/0x2e0 [ 52.501482] ? rwlock_bug.part.0+0x90/0x90 [ 52.501498] gfs2_quota_sync+0x254/0x4f0 [ 52.508327] gfs2: fsid=loop2.0: first mount done, others may mount [ 52.510109] gfs2_sync_fs+0x41/0xa0 [ 52.510120] sync_filesystem+0xd7/0x200 [ 52.510130] generic_shutdown_super+0x69/0x330 [ 52.525264] gfs2: fsid=loop5.0: journal 0 mapped with 1 extents in 0ms [ 52.528183] kill_block_super+0x96/0xe0 [ 52.528195] gfs2_kill_sb+0x100/0x150 [ 52.528204] deactivate_locked_super+0x7c/0xd0 [ 52.528211] deactivate_super+0x136/0x150 [ 52.528219] ? mount_bdev+0x340/0x340 [ 52.528227] ? dput.part.30+0x12d/0xac0 [ 52.558921] gfs2: fsid=loop5.0: jid=0, already locked for use [ 52.561705] ? mnt_get_writers.isra.29+0xb3/0x140 [ 52.561717] cleanup_mnt+0x204/0x440 [ 52.561727] __cleanup_mnt+0xd/0x10 [ 52.561734] task_work_run+0xd8/0x170 [ 52.561747] exit_to_usermode_loop+0x1be/0x210 [ 52.565859] gfs2: fsid=loop5.0: jid=0: Looking at journal... [ 52.572107] do_syscall_64+0x53d/0x630 [ 52.572118] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 52.572124] RIP: 0033:0x4579d7 [ 52.572140] Code: 44 00 00 b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 fd 8f fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 dd 8f fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 52.572144] RSP: 002b:00007ffea1b71ed8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 [ 52.572151] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00000000004579d7 [ 52.572155] RDX: 00000000026239db RSI: 0000000000000002 RDI: 00007ffea1b73040 [ 52.572159] RBP: 00007ffea1b73040 R08: 0000000000000000 R09: 0000000000000009 [ 52.572162] R10: 0000000000000005 R11: 0000000000000246 R12: 0000000002623940 [ 52.572166] R13: 0000000000000000 R14: 0000000000000002 R15: 000000000000ca46 [ 52.576543] Kernel Offset: disabled [ 52.729882] Rebooting in 86400 seconds..