Warning: Permanently added '10.128.0.66' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 36.619249] ------------[ cut here ]------------ [ 36.624251] kernel BUG at fs/ext4/ext4.h:2870! [ 36.629877] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 36.631351] EXT4-fs error (device sda1) in ext4_reserve_inode_write:5947: Out of memory [ 36.635374] CPU: 0 PID: 8085 Comm: syz-executor049 Not tainted 4.19.189-syzkaller #0 [ 36.635381] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.635402] RIP: 0010:ext4_mb_load_buddy_gfp+0x1460/0x1a90 [ 36.635418] Code: 16 04 9f ff e9 b9 f6 ff ff e8 dc ee 7f ff e9 b4 f4 ff ff e8 d2 ee 7f ff 48 89 ef e8 fa 03 9f ff e9 51 fa ff ff e8 c0 ee 7f ff <0f> 0b e8 b9 ee 7f ff 8b 54 24 1c 44 89 e6 48 89 ef e8 da d4 ff ff [ 36.685703] RSP: 0018:ffff8880b141f828 EFLAGS: 00010293 [ 36.691066] RAX: ffff8880b27f04c0 RBX: ffff8880b141f968 RCX: ffffffff81e25c63 [ 36.698335] RDX: 0000000000000000 RSI: ffffffff81e26fb0 RDI: 0000000000000004 [ 36.705628] RBP: ffff8880a38d84c0 R08: 0000000000000000 R09: 00000000fffec510 [ 36.712932] R10: 0000000000000004 R11: 0000000000074071 R12: 00000000fffec510 [ 36.720199] R13: ffff8880a38da500 R14: ffff8880a38d8b40 R15: 0000000000000010 [ 36.727542] FS: 00007fde3d611700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 36.735761] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.741633] CR2: 00000000210009bf CR3: 00000000aa97b000 CR4: 00000000001406f0 [ 36.748903] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.756307] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.763742] Call Trace: [ 36.766324] ? ext4_discard_preallocations+0x251/0xfb0 [ 36.771699] ? ext4_llseek+0x2a0/0x2a0 [ 36.775596] ? ext4_get_group_number+0x146/0x1d0 [ 36.780475] ext4_discard_preallocations+0xaf4/0xfb0 [ 36.785570] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 36.790689] ? ext4_exit_mballoc+0xb0/0xb0 [ 36.794913] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 36.799502] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 36.804722] ? lock_acquire+0x170/0x3c0 [ 36.808696] ? ext4_release_file+0x2b0/0x340 [ 36.813110] ? ext4_llseek+0x2a0/0x2a0 [ 36.817295] ext4_release_file+0x2b8/0x340 [ 36.821526] __fput+0x2ce/0x890 [ 36.824804] task_work_run+0x148/0x1c0 [ 36.828685] do_exit+0xbf3/0x2be0 [ 36.832126] ? futex_wake+0x159/0x480 [ 36.835910] ? mm_update_next_owner+0x650/0x650 [ 36.840574] ? get_signal+0x388/0x1f70 [ 36.844480] ? lock_downgrade+0x720/0x720 [ 36.848631] ? lock_acquire+0x170/0x3c0 [ 36.852607] do_group_exit+0x125/0x310 [ 36.856489] get_signal+0x3f2/0x1f70 [ 36.860214] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.865679] ? iov_iter_init+0xb8/0x1d0 [ 36.869766] do_signal+0x8f/0x1670 [ 36.873477] ? fsnotify+0x84e/0xe10 [ 36.877085] ? setup_sigcontext+0x820/0x820 [ 36.881778] ? fsnotify_first_mark+0x200/0x200 [ 36.886687] ? security_file_permission+0x1c0/0x220 [ 36.892581] ? __se_sys_futex+0x28f/0x3b0 [ 36.897308] ? __se_sys_futex+0x298/0x3b0 [ 36.901474] ? do_futex+0x18a0/0x18a0 [ 36.905304] ? exit_to_usermode_loop+0x36/0x2a0 [ 36.910052] exit_to_usermode_loop+0x204/0x2a0 [ 36.914706] do_syscall_64+0x538/0x620 [ 36.918598] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.923877] RIP: 0033:0x4454e9 [ 36.927076] Code: Bad RIP value. [ 36.930452] RSP: 002b:00007fde3d6112f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 36.938563] RAX: fffffffffffffe00 RBX: 00000000004cc500 RCX: 00000000004454e9 [ 36.945991] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000004cc508 [ 36.953346] RBP: 000000000049c1bc R08: 0000000000000000 R09: 0000000000000000 [ 36.960888] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 36.968244] R13: 2f30656c69662f2e R14: 6465646165726874 R15: 00000000004cc508 [ 36.975600] Modules linked in: [ 36.979315] ---[ end trace 068266615db78fe4 ]--- [ 36.984367] RIP: 0010:ext4_mb_load_buddy_gfp+0x1460/0x1a90 [ 36.990025] Code: 16 04 9f ff e9 b9 f6 ff ff e8 dc ee 7f ff e9 b4 f4 ff ff e8 d2 ee 7f ff 48 89 ef e8 fa 03 9f ff e9 51 fa ff ff e8 c0 ee 7f ff <0f> 0b e8 b9 ee 7f ff 8b 54 24 1c 44 89 e6 48 89 ef e8 da d4 ff ff [ 36.991418] EXT4-fs error (device sda1) in ext4_reserve_inode_write:5947: Out of memory [ 37.012838] RSP: 0018:ffff8880b141f828 EFLAGS: 00010293 [ 37.012894] RAX: ffff8880b27f04c0 RBX: ffff8880b141f968 RCX: ffffffff81e25c63 [ 37.012901] RDX: 0000000000000000 RSI: ffffffff81e26fb0 RDI: 0000000000000004 [ 37.012909] RBP: ffff8880a38d84c0 R08: 0000000000000000 R09: 00000000fffec510 [ 37.012916] R10: 0000000000000004 R11: 0000000000074071 R12: 00000000fffec510 [ 37.012924] R13: ffff8880a38da500 R14: ffff8880a38d8b40 R15: 0000000000000010 [ 37.012935] FS: 00007fde3d611700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 37.012950] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.088255] CR2: 00000000004454bf CR3: 00000000aa97b000 CR4: 00000000001406f0 [ 37.088565] EXT4-fs error (device sda1) in ext4_reserve_inode_write:5947: Out of memory [ 37.097222] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 37.108635] EXT4-fs error (device sda1) in ext4_reserve_inode_write:5947: Out of memory [ 37.113557] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 37.125361] EXT4-fs error (device sda1) in ext4_reserve_inode_write:5947: Out of memory [ 37.129565] Kernel panic - not syncing: Fatal exception [ 37.140087] EXT4-fs error (device sda1) in ext4_reserve_inode_write:5947: Out of memory [ 37.144873] Kernel Offset: disabled [ 37.159014] Rebooting in 86400 seconds..