Warning: Permanently added '10.128.0.243' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 77.232841][ T8639] FAULT_INJECTION: forcing a failure. [ 77.232841][ T8639] name failslab, interval 1, probability 0, space 0, times 1 [ 77.245899][ T8639] CPU: 0 PID: 8639 Comm: syz-executor031 Not tainted 5.4.0-rc6-next-20191106 #0 [ 77.254899][ T8639] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.265070][ T8639] Call Trace: [ 77.268358][ T8639] dump_stack+0x197/0x210 [ 77.272682][ T8639] should_fail.cold+0xa/0x15 [ 77.277288][ T8639] ? fault_create_debugfs_attr+0x180/0x180 [ 77.283289][ T8639] ? ___might_sleep+0x163/0x2c0 [ 77.288135][ T8639] __should_failslab+0x121/0x190 [ 77.293065][ T8639] should_failslab+0x9/0x14 [ 77.297620][ T8639] kmem_cache_alloc+0x2aa/0x710 [ 77.302455][ T8639] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 77.308596][ T8639] ext4_alloc_io_end_vec+0x2a/0x1d0 [ 77.313777][ T8639] ext4_writepages+0x175e/0x2e80 [ 77.318769][ T8639] ? ext4_mark_inode_dirty+0x9b0/0x9b0 [ 77.324216][ T8639] ? 0xffffffff81000000 [ 77.328388][ T8639] ? mark_lock+0xc2/0x1220 [ 77.332785][ T8639] ? __kasan_check_read+0x11/0x20 [ 77.337801][ T8639] ? wbc_attach_and_unlock_inode+0x515/0x920 [ 77.343763][ T8639] ? find_held_lock+0x35/0x130 [ 77.348506][ T8639] ? wbc_attach_and_unlock_inode+0x515/0x920 [ 77.354481][ T8639] ? ext4_mark_inode_dirty+0x9b0/0x9b0 [ 77.359926][ T8639] do_writepages+0xfa/0x2a0 [ 77.364408][ T8639] ? do_writepages+0xfa/0x2a0 [ 77.369062][ T8639] ? lock_downgrade+0x920/0x920 [ 77.373894][ T8639] ? page_writeback_cpu_online+0x20/0x20 [ 77.379523][ T8639] ? __kasan_check_read+0x11/0x20 [ 77.384541][ T8639] ? do_raw_spin_unlock+0x57/0x270 [ 77.389653][ T8639] ? _raw_spin_unlock+0x28/0x40 [ 77.394485][ T8639] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 77.400730][ T8639] ? wbc_attach_and_unlock_inode+0x5bf/0x920 [ 77.406693][ T8639] __filemap_fdatawrite_range+0x2bc/0x3b0 [ 77.412451][ T8639] ? delete_from_page_cache_batch+0xfe0/0xfe0 [ 77.418498][ T8639] ? mark_lock+0xc2/0x1220 [ 77.422901][ T8639] ? ext4_insert_range+0x14c0/0x14c0 [ 77.428169][ T8639] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 77.433696][ T8639] filemap_write_and_wait_range+0xfc/0x1d0 [ 77.439498][ T8639] ? ext4_insert_range+0x14c0/0x14c0 [ 77.444776][ T8639] ext4_punch_hole+0x27d/0x1320 [ 77.449737][ T8639] ? ext4_insert_range+0x14c0/0x14c0 [ 77.455002][ T8639] ext4_fallocate+0x419/0x2470 [ 77.460463][ T8639] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 77.465726][ T8639] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 77.471947][ T8639] ? __this_cpu_preempt_check+0x35/0x190 [ 77.477563][ T8639] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 77.483796][ T8639] ? ext4_insert_range+0x14c0/0x14c0 [ 77.489061][ T8639] vfs_fallocate+0x4aa/0xa50 [ 77.493631][ T8639] ksys_fallocate+0x58/0xa0 [ 77.498120][ T8639] __x64_sys_fallocate+0x97/0xf0 [ 77.503039][ T8639] do_syscall_64+0xfa/0x760 [ 77.507525][ T8639] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 77.513395][ T8639] RIP: 0033:0x440609 [ 77.517272][ T8639] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 5b 14 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 77.536870][ T8639] RSP: 002b:00007fffd7a50c58 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 77.545278][ T8639] RAX: ffffffffffffffda RBX: 00007fffd7a50c60 RCX: 0000000000440609 [ 77.553229][ T8639] RDX: 0000000000000000 RSI: 0000000100000003 RDI: 0000000000000003 [ 77.561182][ T8639] RBP: 0000000000000004 R08: 0000000000000001 R09: 00007fffd7a50033 [ 77.569133][ T8639] R10: 0000000028120001 R11: 0000000000000246 R12: 0000000000401ef0 [ 77.577095][ T8639] R13: 0000000000401f80 R14: 0000000000000000 R15: 0000000000000000 [ 77.586562][ T8639] kasan: CONFIG_KASAN_INLINE enabled [ 77.591929][ T8639] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 77.600050][ T8639] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 77.606983][ T8639] CPU: 0 PID: 8639 Comm: syz-executor031 Not tainted 5.4.0-rc6-next-20191106 #0 [ 77.615975][ T8639] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.626031][ T8639] RIP: 0010:ext4_writepages+0x17b4/0x2e80 [ 77.631727][ T8639] Code: ff ff e8 1f cf b0 ff 48 8b 85 30 fe ff ff 48 8b 8d 00 fe ff ff 48 8d 78 10 48 89 fa 48 c1 ea 03 0f b6 89 c2 00 00 00 48 d3 e3 <42> 80 3c 2a 00 0f 85 03 16 00 00 48 89 58 10 48 c7 c0 08 ad c4 89 [ 77.651315][ T8639] RSP: 0018:ffff88808bf77890 EFLAGS: 00010206 [ 77.657364][ T8639] RAX: fffffffffffffff4 RBX: 00000000007ff000 RCX: 000000000000000c [ 77.665318][ T8639] RDX: 0000000000000000 RSI: ffffffff820534cd RDI: 0000000000000004 [ 77.673427][ T8639] RBP: ffff88808bf77ac0 R08: 0000000000000000 R09: ffffed1015d06b7d [ 77.681493][ T8639] R10: ffffed1015d06b7c R11: ffff8880ae835be3 R12: 0000000000000000 [ 77.689449][ T8639] R13: dffffc0000000000 R14: 00000000000007ff R15: ffff888086499488 [ 77.697402][ T8639] FS: 0000000001162880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 77.706309][ T8639] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.712875][ T8639] CR2: 0000000000000000 CR3: 000000009366b000 CR4: 00000000001406f0 [ 77.720829][ T8639] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.728782][ T8639] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.736743][ T8639] Call Trace: [ 77.740124][ T8639] ? ext4_mark_inode_dirty+0x9b0/0x9b0 [ 77.745560][ T8639] ? 0xffffffff81000000 [ 77.749748][ T8639] ? mark_lock+0xc2/0x1220 [ 77.754161][ T8639] ? __kasan_check_read+0x11/0x20 [ 77.759181][ T8639] ? wbc_attach_and_unlock_inode+0x515/0x920 [ 77.765146][ T8639] ? find_held_lock+0x35/0x130 [ 77.769892][ T8639] ? wbc_attach_and_unlock_inode+0x515/0x920 [ 77.775868][ T8639] ? ext4_mark_inode_dirty+0x9b0/0x9b0 [ 77.781306][ T8639] do_writepages+0xfa/0x2a0 [ 77.785804][ T8639] ? do_writepages+0xfa/0x2a0 [ 77.790460][ T8639] ? lock_downgrade+0x920/0x920 [ 77.795304][ T8639] ? page_writeback_cpu_online+0x20/0x20 [ 77.800926][ T8639] ? __kasan_check_read+0x11/0x20 [ 77.805929][ T8639] ? do_raw_spin_unlock+0x57/0x270 [ 77.811017][ T8639] ? _raw_spin_unlock+0x28/0x40 [ 77.815842][ T8639] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 77.822062][ T8639] ? wbc_attach_and_unlock_inode+0x5bf/0x920 [ 77.828044][ T8639] __filemap_fdatawrite_range+0x2bc/0x3b0 [ 77.833741][ T8639] ? delete_from_page_cache_batch+0xfe0/0xfe0 [ 77.839787][ T8639] ? mark_lock+0xc2/0x1220 [ 77.844192][ T8639] ? ext4_insert_range+0x14c0/0x14c0 [ 77.849472][ T8639] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 77.855012][ T8639] filemap_write_and_wait_range+0xfc/0x1d0 [ 77.860805][ T8639] ? ext4_insert_range+0x14c0/0x14c0 [ 77.866198][ T8639] ext4_punch_hole+0x27d/0x1320 [ 77.871039][ T8639] ? ext4_insert_range+0x14c0/0x14c0 [ 77.876315][ T8639] ext4_fallocate+0x419/0x2470 [ 77.881063][ T8639] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 77.886329][ T8639] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 77.892558][ T8639] ? __this_cpu_preempt_check+0x35/0x190 [ 77.898179][ T8639] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 77.904416][ T8639] ? ext4_insert_range+0x14c0/0x14c0 [ 77.909806][ T8639] vfs_fallocate+0x4aa/0xa50 [ 77.914385][ T8639] ksys_fallocate+0x58/0xa0 [ 77.918876][ T8639] __x64_sys_fallocate+0x97/0xf0 [ 77.923802][ T8639] do_syscall_64+0xfa/0x760 [ 77.928401][ T8639] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 77.934273][ T8639] RIP: 0033:0x440609 [ 77.938159][ T8639] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 5b 14 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 77.958029][ T8639] RSP: 002b:00007fffd7a50c58 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 77.966444][ T8639] RAX: ffffffffffffffda RBX: 00007fffd7a50c60 RCX: 0000000000440609 [ 77.974397][ T8639] RDX: 0000000000000000 RSI: 0000000100000003 RDI: 0000000000000003 [ 77.982361][ T8639] RBP: 0000000000000004 R08: 0000000000000001 R09: 00007fffd7a50033 [ 77.990314][ T8639] R10: 0000000028120001 R11: 0000000000000246 R12: 0000000000401ef0 [ 77.998278][ T8639] R13: 0000000000401f80 R14: 0000000000000000 R15: 0000000000000000 [ 78.006238][ T8639] Modules linked in: [ 78.010339][ T8639] ---[ end trace 0ee46d2ea32148f5 ]--- [ 78.015859][ T8639] RIP: 0010:ext4_writepages+0x17b4/0x2e80 [ 78.021617][ T8639] Code: ff ff e8 1f cf b0 ff 48 8b 85 30 fe ff ff 48 8b 8d 00 fe ff ff 48 8d 78 10 48 89 fa 48 c1 ea 03 0f b6 89 c2 00 00 00 48 d3 e3 <42> 80 3c 2a 00 0f 85 03 16 00 00 48 89 58 10 48 c7 c0 08 ad c4 89 [ 78.041486][ T8639] RSP: 0018:ffff88808bf77890 EFLAGS: 00010206 [ 78.047568][ T8639] RAX: fffffffffffffff4 RBX: 00000000007ff000 RCX: 000000000000000c [ 78.055596][ T8639] RDX: 0000000000000000 RSI: ffffffff820534cd RDI: 0000000000000004 [ 78.063561][ T8639] RBP: ffff88808bf77ac0 R08: 0000000000000000 R09: ffffed1015d06b7d [ 78.073043][ T8639] R10: ffffed1015d06b7c R11: ffff8880ae835be3 R12: 0000000000000000 [ 78.081032][ T8639] R13: dffffc0000000000 R14: 00000000000007ff R15: ffff888086499488 [ 78.089017][ T8639] FS: 0000000001162880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 78.097957][ T8639] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.104582][ T8639] CR2: 0000000000000000 CR3: 000000009366b000 CR4: 00000000001406f0 [ 78.112633][ T8639] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 78.120810][ T8639] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 78.128830][ T8639] Kernel panic - not syncing: Fatal exception [ 78.136413][ T8639] Kernel Offset: disabled [ 78.140739][ T8639] Rebooting in 86400 seconds..