------------[ cut here ]------------ kernel BUG at fs/ext4/ext4.h:3355! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 13366 Comm: syz-executor.1 Not tainted 5.15.110-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 RIP: 0010:ext4_get_group_info+0x399/0x3a0 fs/ext4/ext4.h:3355 Code: 62 ff 8b 74 24 04 48 c7 c7 a0 60 a8 8c 4c 89 f2 e8 ec 0b 0a 02 43 80 3c 2c 00 0f 85 23 fd ff ff e9 26 fd ff ff e8 a7 36 62 ff <0f> 0b 0f 1f 44 00 00 55 41 57 41 56 41 54 53 48 89 fb 49 bf 00 00 RSP: 0018:ffffc90004f8f6e0 EFLAGS: 00010293 RAX: ffffffff821da7d9 RBX: 00000000ffffebac RCX: ffff888019663a00 RDX: 0000000000000000 RSI: 00000000ffffebac RDI: 0000000000000001 RBP: 0000000000000001 R08: ffffffff821da4a9 R09: ffffed10088a1234 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff11008a170cf R13: dffffc0000000000 R14: ffff8880450bc000 R15: ffff8880450b8678 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f097f0ea058 CR3: 00000000235e3000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_mb_load_buddy_gfp+0xc7/0x1500 fs/ext4/mballoc.c:1498 ext4_discard_preallocations+0x84d/0xfc0 fs/ext4/mballoc.c:5033 ext4_release_file+0x16d/0x300 fs/ext4/file.c:149 __fput+0x3bf/0x890 fs/file_table.c:280 task_work_run+0x129/0x1a0 kernel/task_work.c:164 exit_task_work include/linux/task_work.h:32 [inline] do_exit+0x6a3/0x2480 kernel/exit.c:872 do_group_exit+0x144/0x310 kernel/exit.c:994 get_signal+0xc66/0x14e0 kernel/signal.c:2889 arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:865 handle_signal_work kernel/entry/common.c:148 [inline] exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:172 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x5d/0x250 kernel/entry/common.c:301 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f1e95860169 Code: Unable to access opcode bytes at RIP 0x7f1e9586013f. RSP: 002b:00007f1e8bab1218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f1e95980058 RCX: 00007f1e95860169 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f1e95980058 RBP: 00007f1e95980050 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1e9598005c R13: 00007ffee67bb61f R14: 00007f1e8bab1300 R15: 0000000000022000 Modules linked in: ---[ end trace 324ad8fb24b191c6 ]--- RIP: 0010:ext4_get_group_info+0x399/0x3a0 fs/ext4/ext4.h:3355 Code: 62 ff 8b 74 24 04 48 c7 c7 a0 60 a8 8c 4c 89 f2 e8 ec 0b 0a 02 43 80 3c 2c 00 0f 85 23 fd ff ff e9 26 fd ff ff e8 a7 36 62 ff <0f> 0b 0f 1f 44 00 00 55 41 57 41 56 41 54 53 48 89 fb 49 bf 00 00 RSP: 0018:ffffc90004f8f6e0 EFLAGS: 00010293 RAX: ffffffff821da7d9 RBX: 00000000ffffebac RCX: ffff888019663a00 RDX: 0000000000000000 RSI: 00000000ffffebac RDI: 0000000000000001 RBP: 0000000000000001 R08: ffffffff821da4a9 R09: ffffed10088a1234 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff11008a170cf R13: dffffc0000000000 R14: ffff8880450bc000 R15: ffff8880450b8678 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c00674a4d0 CR3: 0000000020e2d000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400