[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.128' (ECDSA) to the list of known hosts. syzkaller login: [ 55.451639] sysfs: cannot create duplicate filename '/fs/gfs2/mounts' [ 55.459389] gfs2: fsid=mounts: Trying to join cluster "lock_nolock", "mounts" [ 55.481761] ------------[ cut here ]------------ [ 55.486537] WARNING: CPU: 1 PID: 7993 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 [ 55.491709] sysfs: cannot create duplicate filename '/fs/gfs2/mounts' [ 55.494748] Kernel panic - not syncing: panic_on_warn set ... [ 55.494748] [ 55.494756] CPU: 1 PID: 7993 Comm: syz-executor355 Not tainted 4.14.302-syzkaller #0 [ 55.494761] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 55.494764] Call Trace: [ 55.494777] dump_stack+0x1b2/0x281 [ 55.494787] panic+0x1f9/0x42d [ 55.494796] ? add_taint.cold+0x16/0x16 [ 55.503093] sysfs: cannot create duplicate filename '/fs/gfs2/mounts' [ 55.508700] ? sysfs_warn_dup.cold+0x17/0x26 [ 55.508710] ? sysfs_warn_dup.cold+0x17/0x26 [ 55.508719] __warn.cold+0x20/0x44 [ 55.524247] ------------[ cut here ]------------ [ 55.525918] ? ist_end_non_atomic+0x10/0x10 [ 55.528479] WARNING: CPU: 0 PID: 7996 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 [ 55.532075] ? sysfs_warn_dup.cold+0x17/0x26 [ 55.535233] Modules linked in: [ 55.539187] report_bug+0x208/0x250 [ 55.550118] do_error_trap+0x195/0x2d0 [ 55.554498] CPU: 0 PID: 7996 Comm: syz-executor355 Not tainted 4.14.302-syzkaller #0 [ 55.558013] ? math_error+0x2d0/0x2d0 [ 55.562733] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 55.567028] ? ___preempt_schedule+0x16/0x18 [ 55.575223] task: ffff88809580a440 task.stack: ffff888096170000 [ 55.579611] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 55.582775] RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 [ 55.586376] invalid_op+0x1b/0x40 [ 55.590229] RSP: 0018:ffff888096177728 EFLAGS: 00010282 [ 55.598083] RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 [ 55.611177] RSP: 0018:ffff8880b355f728 EFLAGS: 00010282 [ 55.615558] RAX: 0000000000000039 RBX: ffff8880b1aadd10 RCX: 0000000000000000 [ 55.626400] RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed1012c2eedb [ 55.631384] RAX: 0000000000000039 RBX: ffff8880b2aa1cd0 RCX: 0000000000000000 [ 55.634812] RBP: ffff88809563c500 R08: 0000000000000039 R09: 0000000000000001 [ 55.634818] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88823882a7e0 [ 55.640153] RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed10166abedb [ 55.645140] R13: ffff8880b4000180 R14: ffff8880b1aadd18 R15: ffff8880b2aa1cd8 [ 55.650474] RBP: ffff8880b37a2800 R08: 0000000000000039 R09: 0000000000000000 [ 55.657727] FS: 00005555555cb300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 55.664969] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88823882a7e0 [ 55.672214] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.679460] R13: ffff8880b43b1040 R14: ffff8880b2aa1cd8 R15: ffff8880b299dc98 [ 55.686700] CR2: 00005584cda81150 CR3: 00000000a59ce000 CR4: 00000000003406f0 [ 55.686708] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.693964] ? sysfs_warn_dup.cold+0x17/0x26 [ 55.701195] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.708444] sysfs_create_dir_ns+0x16f/0x1d0 [ 55.716637] Call Trace: [ 55.723886] kobject_add_internal+0x28b/0x930 [ 55.729741] sysfs_create_dir_ns+0x16f/0x1d0 [ 55.736988] kobject_init_and_add+0xde/0x120 [ 55.744232] kobject_add_internal+0x28b/0x930 [ 55.751476] ? kobject_create_and_add+0x200/0x200 [ 55.755868] kobject_init_and_add+0xde/0x120 [ 55.763112] ? vsnprintf+0x260/0x1340 [ 55.767492] ? kobject_create_and_add+0x200/0x200 [ 55.770055] gfs2_sys_fs_add+0x184/0x3f0 [ 55.774516] ? vsnprintf+0x260/0x1340 [ 55.778896] ? recover_store+0x100/0x100 [ 55.783280] gfs2_sys_fs_add+0x184/0x3f0 [ 55.787746] ? snprintf+0xa5/0xd0 [ 55.792561] ? recover_store+0x100/0x100 [ 55.796945] ? strscpy+0x94/0x280 [ 55.800717] ? snprintf+0xa5/0xd0 [ 55.805531] fill_super+0x118b/0x2310 [ 55.809568] ? strscpy+0x94/0x280 [ 55.813338] ? vsnprintf+0x260/0x1340 [ 55.817370] fill_super+0x118b/0x2310 [ 55.821402] ? gfs2_online_uevent+0x1b0/0x1b0 [ 55.824828] ? vsnprintf+0x260/0x1340 [ 55.828860] ? memcpy+0x35/0x50 [ 55.832312] ? gfs2_online_uevent+0x1b0/0x1b0 [ 55.835737] ? pointer+0x9e0/0x9e0 [ 55.839537] ? memcpy+0x35/0x50 [ 55.842974] ? snprintf+0xa5/0xd0 [ 55.846744] ? pointer+0x9e0/0x9e0 [ 55.850521] ? vsprintf+0x30/0x30 [ 55.854989] ? snprintf+0xa5/0xd0 [ 55.858760] ? set_blocksize+0x125/0x380 [ 55.862012] ? vsprintf+0x30/0x30 [ 55.866483] gfs2_mount+0x439/0x510 [ 55.869996] ? set_blocksize+0x125/0x380 [ 55.873245] ? fill_super+0x2310/0x2310 [ 55.876757] gfs2_mount+0x439/0x510 [ 55.880279] ? alloc_pages_current+0x15d/0x260 [ 55.883690] ? fill_super+0x2310/0x2310 [ 55.887113] ? __lockdep_init_map+0x100/0x560 [ 55.887121] mount_fs+0x92/0x2a0 [ 55.891165] ? alloc_pages_current+0x15d/0x260 [ 55.894582] vfs_kern_mount.part.0+0x5b/0x470 [ 55.898178] ? __lockdep_init_map+0x100/0x560 [ 55.902210] do_mount+0xe65/0x2a30 [ 55.906155] mount_fs+0x92/0x2a0 [ 55.909754] ? retint_kernel+0x2d/0x2d [ 55.914306] vfs_kern_mount.part.0+0x5b/0x470 [ 55.918261] ? copy_mount_string+0x40/0x40 [ 55.922729] do_mount+0xe65/0x2a30 [ 55.926069] ? memset+0x20/0x40 [ 55.930627] ? retint_kernel+0x2d/0x2d [ 55.935095] ? copy_mount_options+0x1fa/0x2f0 [ 55.939574] ? copy_mount_string+0x40/0x40 [ 55.943130] ? copy_mnt_ns+0xa30/0xa30 [ 55.946470] ? memset+0x20/0x40 [ 55.950331] SyS_mount+0xa8/0x120 [ 55.954801] ? copy_mount_options+0x1fa/0x2f0 [ 55.959025] ? copy_mnt_ns+0xa30/0xa30 [ 55.962538] ? copy_mnt_ns+0xa30/0xa30 [ 55.965793] do_syscall_64+0x1d5/0x640 [ 55.969652] SyS_mount+0xa8/0x120 [ 55.974130] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 55.978336] ? copy_mnt_ns+0xa30/0xa30 [ 55.982192] RIP: 0033:0x7f1ef28e897a [ 55.985447] do_syscall_64+0x1d5/0x640 [ 55.988868] RSP: 002b:00007ffca569e348 EFLAGS: 00000282 [ 55.993341] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 55.997192] ORIG_RAX: 00000000000000a5 [ 56.001051] RIP: 0033:0x7f1ef28e897a [ 56.004907] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f1ef28e897a [ 56.008328] RSP: 002b:00007ffca569e348 EFLAGS: 00000282 [ 56.013492] RDX: 00000000200124c0 RSI: 0000000020012500 RDI: 00007ffca569e350 [ 56.017348] ORIG_RAX: 00000000000000a5 [ 56.021031] RBP: 00007ffca569e350 R08: 00007ffca569e390 R09: 0000000000000002 [ 56.024888] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f1ef28e897a [ 56.030222] R10: 0000000002000819 R11: 0000000000000282 R12: 0000000000000004 [ 56.035381] RDX: 00000000200124c0 RSI: 0000000020012500 RDI: 00007ffca569e350 [ 56.039332] R13: 00005555555cb2c0 R14: 00007ffca569e390 R15: 0000000000000000 [ 56.043014] RBP: 00007ffca569e350 R08: 00007ffca569e390 R09: 0000000000000002 [ 56.110264] R10: 0000000002000819 R11: 0000000000000282 R12: 0000000000000004 [ 56.117516] R13: 00005555555cb2c0 R14: 00007ffca569e390 R15: 0000000000000000 [ 56.124774] Code: bd ea ff ff ff e9 8f c2 9f fa 4c 89 ff e8 74 de 7a fa eb da e8 6d 1d 51 fa 4c 89 ea 48 89 ee 48 c7 c7 80 c4 95 87 e8 e5 fb fe ff <0f> 0b 48 89 ef 5d 41 5c 41 5d e9 4c b4 7a fa e8 47 1d 51 fa 4d [ 56.143959] ---[ end trace d2bcbc24bfa2f2bc ]--- [ 56.148851] Kernel Offset: disabled [ 56.152509] Rebooting in 86400 seconds..