[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.35' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 33.619854] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 33.636540] ------------[ cut here ]------------ [ 33.641323] kernel BUG at fs/ext4/ext4.h:2870! [ 33.646163] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 33.651534] CPU: 1 PID: 8112 Comm: syz-executor765 Not tainted 4.19.211-syzkaller #0 [ 33.659408] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 33.668766] RIP: 0010:ext4_mb_load_buddy_gfp+0x1460/0x1a90 [ 33.674368] Code: 36 04 9f ff e9 b9 f6 ff ff e8 2c df 7f ff e9 b4 f4 ff ff e8 22 df 7f ff 48 89 ef e8 1a 04 9f ff e9 51 fa ff ff e8 10 df 7f ff <0f> 0b e8 09 df 7f ff 8b 54 24 1c 44 89 e6 48 89 ef e8 da d4 ff ff [ 33.693387] RSP: 0018:ffff8880957e7290 EFLAGS: 00010293 [ 33.698732] RAX: ffff8880b5bca340 RBX: ffff8880957e73c0 RCX: ffffffff81e29313 [ 33.705985] RDX: 0000000000000000 RSI: ffffffff81e2a660 RDI: 0000000000000004 [ 33.713233] RBP: ffff8880b157cb80 R08: ffffffff81dc0bf0 R09: 0000000000000001 [ 33.720483] R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000001 [ 33.727731] R13: ffff8880b1676a80 R14: ffff8880b157d200 R15: 0000000000000001 [ 33.734980] FS: 000055555682c300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 33.743185] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.749046] CR2: 000055e908da8db8 CR3: 00000000a8cfd000 CR4: 00000000003406e0 [ 33.756295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.763544] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.770787] Call Trace: [ 33.773362] ext4_mballoc_query_range+0xac/0x990 [ 33.778101] ? ext4_getfsmap_helper+0x1290/0x1290 [ 33.782924] ? ext4_trim_fs+0x26c0/0x26c0 [ 33.787053] ? check_preemption_disabled+0x41/0x280 [ 33.792051] ext4_getfsmap_datadev+0x166d/0x2860 [ 33.796790] ? ext4_getfsmap_logdev+0xb10/0xb10 [ 33.801441] ? unwind_get_return_address+0x51/0x90 [ 33.806349] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.811694] ? ext4_file_write_iter+0xf20/0xf20 [ 33.816341] ? u64_swap+0x70/0x70 [ 33.819775] ext4_getfsmap+0x68b/0x980 [ 33.823642] ? ext4_getfsmap_logdev+0xb10/0xb10 [ 33.828298] ? ext4_fsmap_to_internal+0x260/0x260 [ 33.833124] ? swap_inode_data+0x4e0/0x4e0 [ 33.837356] ? __might_fault+0x11f/0x1d0 [ 33.841397] ? ext4_getfsmap_logdev+0xb10/0xb10 [ 33.846142] ? lock_downgrade+0x720/0x720 [ 33.850280] ext4_ioc_getfsmap+0x2ba/0x910 [ 33.854523] ? ext4_getfsmap_format+0x500/0x500 [ 33.859174] ? mark_held_locks+0xf0/0xf0 [ 33.863226] ? __read_once_size_nocheck.constprop.0+0x10/0x10 [ 33.869095] ? check_preemption_disabled+0x41/0x280 [ 33.874100] ext4_ioctl+0x2a1/0x3eb0 [ 33.877796] ? __kernel_text_address+0x9/0x30 [ 33.882273] ? unwind_get_return_address+0x51/0x90 [ 33.887182] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.892522] ? __save_stack_trace+0xaf/0x190 [ 33.896914] ? ext4_ioctl_check_immutable+0x200/0x200 [ 33.902084] ? trace_hardirqs_off+0x64/0x200 [ 33.906471] ? __kasan_slab_free+0x186/0x1f0 [ 33.910861] ? kmem_cache_free+0x7f/0x260 [ 33.914988] ? putname+0xe1/0x120 [ 33.918419] ? do_sys_open+0x2ba/0x520 [ 33.922285] ? do_syscall_64+0xf9/0x620 [ 33.926239] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.931583] ? mark_held_locks+0xf0/0xf0 [ 33.935622] ? __lock_acquire+0x6de/0x3ff0 [ 33.939927] ? debug_check_no_obj_freed+0x201/0x490 [ 33.944924] ? lock_downgrade+0x720/0x720 [ 33.949053] ? lock_acquire+0x170/0x3c0 [ 33.953005] ? debug_check_no_obj_freed+0xb5/0x490 [ 33.957922] ? ext4_ioctl_check_immutable+0x200/0x200 [ 33.963098] do_vfs_ioctl+0xcdb/0x12e0 [ 33.966966] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 33.972049] ? debug_check_no_obj_freed+0x201/0x490 [ 33.977048] ? ioctl_preallocate+0x200/0x200 [ 33.981437] ? putname+0xe1/0x120 [ 33.984872] ? putname+0xe1/0x120 [ 33.988303] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 33.993300] ? kmem_cache_free+0x226/0x260 [ 33.997520] ? putname+0xe1/0x120 [ 34.000960] ? do_sys_open+0x2bf/0x520 [ 34.004834] ? filp_open+0x70/0x70 [ 34.008356] ? fput+0x2b/0x190 [ 34.011525] ksys_ioctl+0x9b/0xc0 [ 34.014957] __x64_sys_ioctl+0x6f/0xb0 [ 34.018822] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 34.023382] do_syscall_64+0xf9/0x620 [ 34.027165] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.032334] RIP: 0033:0x7fbf5ecc7fb9 [ 34.036030] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 34.054910] RSP: 002b:00007ffe647e6838 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 34.062598] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbf5ecc7fb9 [ 34.069849] RDX: 0000000020000200 RSI: 00000000c0c0583b RDI: 0000000000000003 [ 34.077095] RBP: 00007fbf5ec87820 R08: 0000000000000000 R09: 0000000000000000 [ 34.084344] R10: 000055555682c2c0 R11: 0000000000000246 R12: 00007fbf5ec878b0 [ 34.091592] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 34.098841] Modules linked in: [ 34.102391] ---[ end trace d532031f8f6032e7 ]--- [ 34.107162] RIP: 0010:ext4_mb_load_buddy_gfp+0x1460/0x1a90 [ 34.112822] Code: 36 04 9f ff e9 b9 f6 ff ff e8 2c df 7f ff e9 b4 f4 ff ff e8 22 df 7f ff 48 89 ef e8 1a 04 9f ff e9 51 fa ff ff e8 10 df 7f ff <0f> 0b e8 09 df 7f ff 8b 54 24 1c 44 89 e6 48 89 ef e8 da d4 ff ff [ 34.132294] RSP: 0018:ffff8880957e7290 EFLAGS: 00010293 [ 34.137758] RAX: ffff8880b5bca340 RBX: ffff8880957e73c0 RCX: ffffffff81e29313 [ 34.145027] RDX: 0000000000000000 RSI: ffffffff81e2a660 RDI: 0000000000000004 [ 34.152513] RBP: ffff8880b157cb80 R08: ffffffff81dc0bf0 R09: 0000000000000001 [ 34.159913] R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000001 [ 34.167224] R13: ffff8880b1676a80 R14: ffff8880b157d200 R15: 0000000000000001 [ 34.174493] FS: 000055555682c300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 34.182777] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.188702] CR2: 000055e908da8db8 CR3: 00000000a8cfd000 CR4: 00000000003406e0 [ 34.195992] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.203307] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.210660] Kernel panic - not syncing: Fatal exception [ 34.216074] Kernel Offset: disabled [ 34.219683] Rebooting in 86400 seconds..