Warning: Permanently added '10.128.0.7' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 233.638608] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 233.650666] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 233.666309] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 233.683500] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 233.697514] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 233.733982] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds executing program executing program [ 234.214730] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds executing program executing program executing program executing program [ 234.387436] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 234.408540] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 234.437562] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 234.473765] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 234.475383] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds executing program executing program [ 234.752884] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds executing program executing program executing program executing program [ 235.140529] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 235.157247] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds executing program [ 235.213074] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 235.253038] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 235.289504] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds executing program executing program executing program executing program [ 235.691885] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds executing program [ 235.795749] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 235.800358] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 235.819561] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 235.831295] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds executing program executing program executing program executing program [ 236.314773] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds executing program [ 236.398594] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 236.415108] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 236.444535] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 236.466916] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 236.682019] ------------[ cut here ]------------ [ 236.687058] WARNING: CPU: 1 PID: 8135 at fs/nilfs2/btree.c:2285 nilfs_btree_assign+0x815/0xcc0 [ 236.695805] Kernel panic - not syncing: panic_on_warn set ... [ 236.695805] [ 236.703169] CPU: 1 PID: 8135 Comm: segctord Not tainted 4.14.296-syzkaller #0 [ 236.710440] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 [ 236.719793] Call Trace: [ 236.722386] dump_stack+0x1b2/0x281 [ 236.726016] panic+0x1f9/0x42d [ 236.729209] ? add_taint.cold+0x16/0x16 [ 236.733187] ? nilfs_btree_assign+0x815/0xcc0 [ 236.737684] ? nilfs_btree_assign+0x815/0xcc0 [ 236.742178] __warn.cold+0x20/0x44 [ 236.745721] ? ist_end_non_atomic+0x10/0x10 [ 236.750175] ? nilfs_btree_assign+0x815/0xcc0 [ 236.754674] report_bug+0x208/0x250 [ 236.758309] do_error_trap+0x195/0x2d0 [ 236.762200] ? math_error+0x2d0/0x2d0 [ 236.766000] ? nilfs_btree_node_lookup+0x181/0x240 [ 236.770933] ? __lock_acquire+0x5fc/0x3f20 [ 236.775171] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 236.780015] invalid_op+0x1b/0x40 [ 236.783466] RIP: 0010:nilfs_btree_assign+0x815/0xcc0 [ 236.788571] RSP: 0018:ffff88808d0afa70 EFLAGS: 00010297 [ 236.793934] RAX: ffff888097b42080 RBX: 0000000000000001 RCX: 0000000000000008 [ 236.801224] RDX: 0000000000000000 RSI: dffffc0000000000 RDI: ffff8880aa432110 [ 236.808492] RBP: ffff8880aa432080 R08: 0000000000000000 R09: 0000000000000002 [ 236.815762] R10: 0000000000000000 R11: ffff888097b42080 R12: 00000000fffffffe [ 236.823031] R13: ffff88808d0afcc0 R14: ffff888088d7a6d0 R15: 0000000000040103 [ 236.830324] ? nilfs_btree_seek_key+0x3e0/0x3e0 [ 236.835006] nilfs_bmap_assign+0x83/0x170 [ 236.839159] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 236.844613] nilfs_segctor_do_construct+0x1931/0x79c0 [ 236.849821] ? nilfs_segctor_scan_file+0x630/0x630 [ 236.854751] ? lock_acquire+0x170/0x3f0 [ 236.858727] ? lock_downgrade+0x740/0x740 [ 236.862892] ? do_raw_spin_unlock+0x164/0x220 [ 236.867382] ? _raw_spin_unlock+0x29/0x40 [ 236.871542] nilfs_segctor_construct+0x6db/0x8e0 [ 236.876305] nilfs_segctor_thread+0x3ad/0xdb0 [ 236.880802] ? nilfs_segctor_construct+0x8e0/0x8e0 [ 236.885730] ? __schedule+0x1450/0x1de0 [ 236.889708] ? wait_woken+0x230/0x230 [ 236.893512] ? nilfs_segctor_construct+0x8e0/0x8e0 [ 236.898444] kthread+0x30d/0x420 [ 236.901808] ? kthread_create_on_node+0xd0/0xd0 [ 236.906478] ret_from_fork+0x24/0x30 [ 236.910536] Kernel Offset: disabled [ 236.914201] Rebooting in 86400 seconds..