[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.9' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 59.908722][ T8473] loop0: detected capacity change from 0 to 8176 [ 59.920559][ T8473] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024) [ 59.947530][ T8496] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 60.004791][ T8496] ------------[ cut here ]------------ [ 60.010688][ T8496] WARNING: CPU: 0 PID: 8496 at include/linux/backing-dev.h:283 __set_page_dirty+0xace/0x1070 [ 60.021028][ T8496] Modules linked in: [ 60.025166][ T8496] CPU: 0 PID: 8496 Comm: segctord Not tainted 5.14.0-rc5-syzkaller #0 [ 60.033298][ T8496] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.043506][ T8496] RIP: 0010:__set_page_dirty+0xace/0x1070 [ 60.049231][ T8496] Code: a8 01 00 00 be ff ff ff ff 48 8d 78 70 e8 ea 60 8d 07 31 ff 89 c3 89 c6 e8 cf a6 d8 ff 85 db 0f 85 ac f7 ff ff e8 82 9f d8 ff <0f> 0b e9 a0 f7 ff ff e8 76 9f d8 ff 4c 8d 75 08 48 b8 00 00 00 00 [ 60.068834][ T8496] RSP: 0018:ffffc9000175f8c8 EFLAGS: 00010093 [ 60.074891][ T8496] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 60.083038][ T8496] RDX: ffff8880263b9c40 RSI: ffffffff819d083e RDI: 0000000000000003 [ 60.091201][ T8496] RBP: ffffea000082dac0 R08: 0000000000000000 R09: 0000000000000001 [ 60.099342][ T8496] R10: ffffffff819d0831 R11: 0000000000000000 R12: 0000000000000293 [ 60.107300][ T8496] R13: ffff888037e60138 R14: ffff888037e60488 R15: ffff888037e602e0 [ 60.115430][ T8496] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 60.124957][ T8496] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.131625][ T8496] CR2: 00005593610abbe0 CR3: 0000000016882000 CR4: 0000000000350ef0 [ 60.139592][ T8496] Call Trace: [ 60.142858][ T8496] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 60.149122][ T8496] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 60.155371][ T8496] mark_buffer_dirty+0x49a/0x5e0 [ 60.160309][ T8496] nilfs_btree_propagate+0x4ae/0xea0 [ 60.165593][ T8496] nilfs_bmap_propagate+0x73/0x170 [ 60.170689][ T8496] nilfs_collect_dat_data+0x45/0xd0 [ 60.175875][ T8496] nilfs_segctor_apply_buffers+0x14a/0x470 [ 60.181937][ T8496] ? nilfs_collect_file_bmap+0x80/0x80 [ 60.187921][ T8496] nilfs_segctor_scan_file+0x3e4/0x700 [ 60.193373][ T8496] ? nilfs_collect_file_data+0xd0/0xd0 [ 60.199009][ T8496] nilfs_segctor_do_construct+0x16ee/0x6b20 [ 60.204995][ T8496] ? nilfs_segctor_scan_file+0x700/0x700 [ 60.210616][ T8496] ? do_raw_spin_lock+0x120/0x2b0 [ 60.215624][ T8496] ? rwlock_bug.part.0+0x90/0x90 [ 60.221332][ T8496] ? do_raw_spin_unlock+0x171/0x230 [ 60.226518][ T8496] ? _raw_spin_unlock+0x24/0x40 [ 60.231454][ T8496] nilfs_segctor_construct+0x7a7/0xb30 [ 60.236905][ T8496] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 60.243130][ T8496] ? trace_nilfs2_transaction_transition+0x1ac/0x240 [ 60.249882][ T8496] nilfs_segctor_thread+0x3c3/0xf90 [ 60.255160][ T8496] ? nilfs_segctor_construct+0xb30/0xb30 [ 60.260960][ T8496] ? finish_wait+0x270/0x270 [ 60.265796][ T8496] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 60.272017][ T8496] ? __kthread_parkme+0x15f/0x220 [ 60.277027][ T8496] ? nilfs_segctor_construct+0xb30/0xb30 [ 60.282737][ T8496] kthread+0x3e5/0x4d0 [ 60.286794][ T8496] ? set_kthread_struct+0x130/0x130 [ 60.291978][ T8496] ret_from_fork+0x1f/0x30 [ 60.296393][ T8496] Kernel panic - not syncing: panic_on_warn set ... [ 60.302957][ T8496] CPU: 0 PID: 8496 Comm: segctord Not tainted 5.14.0-rc5-syzkaller #0 [ 60.311179][ T8496] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.321387][ T8496] Call Trace: [ 60.324653][ T8496] dump_stack_lvl+0xcd/0x134 [ 60.329235][ T8496] panic+0x306/0x73d [ 60.333116][ T8496] ? __warn_printk+0xf3/0xf3 [ 60.337695][ T8496] ? __warn.cold+0x1a/0x44 [ 60.342441][ T8496] ? __set_page_dirty+0xace/0x1070 [ 60.347534][ T8496] __warn.cold+0x35/0x44 [ 60.351759][ T8496] ? __set_page_dirty+0xace/0x1070 [ 60.356850][ T8496] report_bug+0x1bd/0x210 [ 60.361168][ T8496] handle_bug+0x3c/0x60 [ 60.365309][ T8496] exc_invalid_op+0x14/0x40 [ 60.369802][ T8496] asm_exc_invalid_op+0x12/0x20 [ 60.374898][ T8496] RIP: 0010:__set_page_dirty+0xace/0x1070 [ 60.381046][ T8496] Code: a8 01 00 00 be ff ff ff ff 48 8d 78 70 e8 ea 60 8d 07 31 ff 89 c3 89 c6 e8 cf a6 d8 ff 85 db 0f 85 ac f7 ff ff e8 82 9f d8 ff <0f> 0b e9 a0 f7 ff ff e8 76 9f d8 ff 4c 8d 75 08 48 b8 00 00 00 00 [ 60.400748][ T8496] RSP: 0018:ffffc9000175f8c8 EFLAGS: 00010093 [ 60.406807][ T8496] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 60.415116][ T8496] RDX: ffff8880263b9c40 RSI: ffffffff819d083e RDI: 0000000000000003 [ 60.423078][ T8496] RBP: ffffea000082dac0 R08: 0000000000000000 R09: 0000000000000001 [ 60.431384][ T8496] R10: ffffffff819d0831 R11: 0000000000000000 R12: 0000000000000293 [ 60.439432][ T8496] R13: ffff888037e60138 R14: ffff888037e60488 R15: ffff888037e602e0 [ 60.447656][ T8496] ? __set_page_dirty+0xac1/0x1070 [ 60.452760][ T8496] ? __set_page_dirty+0xace/0x1070 [ 60.457950][ T8496] ? __set_page_dirty+0xace/0x1070 [ 60.463460][ T8496] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 60.469861][ T8496] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 60.476103][ T8496] mark_buffer_dirty+0x49a/0x5e0 [ 60.481295][ T8496] nilfs_btree_propagate+0x4ae/0xea0 [ 60.486948][ T8496] nilfs_bmap_propagate+0x73/0x170 [ 60.492162][ T8496] nilfs_collect_dat_data+0x45/0xd0 [ 60.497796][ T8496] nilfs_segctor_apply_buffers+0x14a/0x470 [ 60.503595][ T8496] ? nilfs_collect_file_bmap+0x80/0x80 [ 60.509047][ T8496] nilfs_segctor_scan_file+0x3e4/0x700 [ 60.514500][ T8496] ? nilfs_collect_file_data+0xd0/0xd0 [ 60.519958][ T8496] nilfs_segctor_do_construct+0x16ee/0x6b20 [ 60.525861][ T8496] ? nilfs_segctor_scan_file+0x700/0x700 [ 60.531483][ T8496] ? do_raw_spin_lock+0x120/0x2b0 [ 60.536504][ T8496] ? rwlock_bug.part.0+0x90/0x90 [ 60.541439][ T8496] ? do_raw_spin_unlock+0x171/0x230 [ 60.546631][ T8496] ? _raw_spin_unlock+0x24/0x40 [ 60.551653][ T8496] nilfs_segctor_construct+0x7a7/0xb30 [ 60.557287][ T8496] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 60.563693][ T8496] ? trace_nilfs2_transaction_transition+0x1ac/0x240 [ 60.570627][ T8496] nilfs_segctor_thread+0x3c3/0xf90 [ 60.575830][ T8496] ? nilfs_segctor_construct+0xb30/0xb30 [ 60.581551][ T8496] ? finish_wait+0x270/0x270 [ 60.586143][ T8496] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 60.592552][ T8496] ? __kthread_parkme+0x15f/0x220 [ 60.597567][ T8496] ? nilfs_segctor_construct+0xb30/0xb30 [ 60.603193][ T8496] kthread+0x3e5/0x4d0 [ 60.607261][ T8496] ? set_kthread_struct+0x130/0x130 [ 60.612449][ T8496] ret_from_fork+0x1f/0x30 [ 60.624082][ T8496] Kernel Offset: disabled [ 60.628714][ T8496] Rebooting in 86400 seconds..