[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.83' (ECDSA) to the list of known hosts. syzkaller login: [ 43.467589] IPVS: ftp: loaded support on port[0] = 21 executing program [ 43.609147] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 43.617017] gfs2: fsid=syz:syz: Now mounting FS... [ 43.641071] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents [ 43.647546] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 43.653644] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 43.665139] gfs2: fsid=syz:syz.0: jid=0: Done [ 43.670697] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 43.783774] gfs2: fsid=syz:syz.0: found 2 quota changes [ 43.794198] gfs2: original: do_sync+0x442/0xc90 [ 43.799078] gfs2: pid: 8115 [ 43.802013] gfs2: lock type: 8 req lock state : 1 [ 43.806933] gfs2: new: do_sync+0x442/0xc90 [ 43.811188] gfs2: pid: 8115 [ 43.814138] gfs2: lock type: 8 req lock state : 1 [ 43.819049] gfs2: G: s:EX n:8/1 f:qb t:EX d:EX/0 a:0 v:0 r:5 m:20 [ 43.825371] gfs2: H: s:EX f:cH e:0 p:8115 [syz-executor123] do_sync+0x442/0xc90 [ 43.833485] ------------[ cut here ]------------ [ 43.838243] kernel BUG at fs/gfs2/glock.c:1082! [ 43.842963] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 43.848315] CPU: 0 PID: 8115 Comm: syz-executor123 Not tainted 4.19.211-syzkaller #0 [ 43.856169] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 43.865519] RIP: 0010:gfs2_glock_nq.cold+0x276/0x2cd [ 43.870607] Code: 0f b6 04 02 84 c0 74 04 3c 03 7e 6e 8b 73 18 44 89 ea 48 c7 c7 60 4f a6 88 e8 02 57 f8 ff 48 8b 74 24 08 31 ff e8 0b cc 0a fb <0f> 0b e8 74 02 9d f9 4c 8b 04 24 e9 aa fd ff ff 31 ed e9 12 fe ff [ 43.889492] RSP: 0018:ffff88809e62f8e8 EFLAGS: 00010292 [ 43.894835] RAX: 0000000000000000 RBX: ffff8880b0de7298 RCX: ffffffff83063ba3 [ 43.902085] RDX: 0000000000000000 RSI: ffffffff83063bf2 RDI: ffffffff88a67230 [ 43.909331] RBP: 0000000000001fb3 R08: 0000000000000000 R09: 0000000000000000 [ 43.916576] R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880ab4830f8 [ 43.923819] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8880ab578780 [ 43.931074] FS: 0000555556b26300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 43.939422] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.947123] CR2: 00007fa5b3683140 CR3: 0000000009e6d000 CR4: 00000000003406f0 [ 43.954380] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.961630] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.968875] Call Trace: [ 43.971448] do_sync+0x44a/0xc90 [ 43.974793] ? qd_check_sync.part.0+0x206/0x2a0 [ 43.979437] ? do_qc+0x660/0x660 [ 43.982782] ? gfs2_quota_sync+0x3fa/0x780 [ 43.986994] ? lock_downgrade+0x720/0x720 [ 43.991116] ? lock_acquire+0x170/0x3c0 [ 43.995067] ? gfs2_quota_sync+0x327/0x780 [ 43.999279] ? _raw_spin_unlock+0x29/0x40 [ 44.003401] gfs2_quota_sync+0x5d1/0x780 [ 44.007443] gfs2_sync_fs+0x40/0xb0 [ 44.011048] ? gfs2_show_options+0xc80/0xc80 [ 44.015438] sync_filesystem+0x105/0x250 [ 44.019479] generic_shutdown_super+0x70/0x370 [ 44.024038] kill_block_super+0x97/0xf0 [ 44.027988] gfs2_kill_sb+0x12c/0x1a0 [ 44.031764] deactivate_locked_super+0x94/0x160 [ 44.036410] deactivate_super+0x174/0x1a0 [ 44.040536] ? deactivate_locked_super+0x160/0x160 [ 44.045441] ? dput+0x31/0x640 [ 44.048613] cleanup_mnt+0x1a8/0x290 [ 44.052306] task_work_run+0x148/0x1c0 [ 44.056171] do_exit+0xbf3/0x2be0 [ 44.059601] ? lock_downgrade+0x720/0x720 [ 44.063724] ? mm_update_next_owner+0x650/0x650 [ 44.068374] ? up_read+0x17/0x110 [ 44.071804] ? __do_page_fault+0x180/0xd60 [ 44.076015] do_group_exit+0x125/0x310 [ 44.079884] __x64_sys_exit_group+0x3a/0x50 [ 44.084183] do_syscall_64+0xf9/0x620 [ 44.087963] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 44.093129] RIP: 0033:0x7fa5b35d8999 [ 44.096821] Code: Bad RIP value. [ 44.100161] RSP: 002b:00007ffc76416678 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 44.107842] RAX: ffffffffffffffda RBX: 00007fa5b3685330 RCX: 00007fa5b35d8999 [ 44.115086] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 44.122332] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 0000000000037f49 [ 44.129577] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa5b3685330 [ 44.136823] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 44.144071] Modules linked in: [ 44.147300] ---[ end trace 42b2dfd7571339eb ]--- [ 44.152056] RIP: 0010:gfs2_glock_nq.cold+0x276/0x2cd [ 44.157205] Code: 0f b6 04 02 84 c0 74 04 3c 03 7e 6e 8b 73 18 44 89 ea 48 c7 c7 60 4f a6 88 e8 02 57 f8 ff 48 8b 74 24 08 31 ff e8 0b cc 0a fb <0f> 0b e8 74 02 9d f9 4c 8b 04 24 e9 aa fd ff ff 31 ed e9 12 fe ff [ 44.176145] RSP: 0018:ffff88809e62f8e8 EFLAGS: 00010292 [ 44.181497] RAX: 0000000000000000 RBX: ffff8880b0de7298 RCX: ffffffff83063ba3 [ 44.188774] RDX: 0000000000000000 RSI: ffffffff83063bf2 RDI: ffffffff88a67230 [ 44.196068] RBP: 0000000000001fb3 R08: 0000000000000000 R09: 0000000000000000 [ 44.203324] R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880ab4830f8 [ 44.210607] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8880ab578780 [ 44.217906] FS: 0000555556b26300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 44.226150] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.232018] CR2: 00007fa5b35d896f CR3: 0000000009e6d000 CR4: 00000000003406f0 [ 44.239300] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.246596] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.253855] Kernel panic - not syncing: Fatal exception [ 44.259358] Kernel Offset: disabled [ 44.262966] Rebooting in 86400 seconds..