------------[ cut here ]------------ kernel BUG at fs/ext4/ext4.h:3331! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 22826 Comm: syz-executor.4 Not tainted 6.1.21-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 RIP: 0010:ext4_get_group_info+0x399/0x3a0 fs/ext4/ext4.h:3331 Code: 4f ff 8b 74 24 04 48 c7 c7 00 c5 0b 8d 4c 89 f2 e8 dc 94 24 02 43 80 3c 2c 00 0f 85 23 fd ff ff e9 26 fd ff ff e8 f7 da 4f 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:ffffc90003d0f970 EFLAGS: 00010293 RAX: ffffffff8239ace9 RBX: 00000000ffffffff RCX: ffff88803bd61d40 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000001 RBP: 0000000000000001 R08: ffffffff8239a9b9 R09: ffffed100757773c R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff110118358cf R13: dffffc0000000000 R14: ffff88808c1ae000 R15: ffff88808c1ac678 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f37cb5ad988 CR3: 000000007889d000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_mb_load_buddy_gfp+0xc3/0x820 fs/ext4/mballoc.c:1448 ext4_discard_preallocations+0x851/0x1150 fs/ext4/mballoc.c:5021 ext4_release_file+0x16a/0x300 fs/ext4/file.c:166 __fput+0x3b7/0x890 fs/file_table.c:320 task_work_run+0x246/0x300 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0x6fb/0x2300 kernel/exit.c:869 do_group_exit+0x202/0x2b0 kernel/exit.c:1019 __do_sys_exit_group kernel/exit.c:1030 [inline] __se_sys_exit_group kernel/exit.c:1028 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1028 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f0a0c48c0f9 Code: Unable to access opcode bytes at 0x7f0a0c48c0cf. RSP: 002b:00007ffea3b74708 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007f0a0c48c0f9 RDX: 00007f0a0c43dfab RSI: ffffffffffffffb8 RDI: 0000000000000000 RBP: 0000000000000001 R08: 00000000d51c29d7 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffea3b747f0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ext4_get_group_info+0x399/0x3a0 fs/ext4/ext4.h:3331 Code: 4f ff 8b 74 24 04 48 c7 c7 00 c5 0b 8d 4c 89 f2 e8 dc 94 24 02 43 80 3c 2c 00 0f 85 23 fd ff ff e9 26 fd ff ff e8 f7 da 4f 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:ffffc90003d0f970 EFLAGS: 00010293 RAX: ffffffff8239ace9 RBX: 00000000ffffffff RCX: ffff88803bd61d40 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000001 RBP: 0000000000000001 R08: ffffffff8239a9b9 R09: ffffed100757773c R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff110118358cf R13: dffffc0000000000 R14: ffff88808c1ae000 R15: ffff88808c1ac678 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f37cb5ad988 CR3: 000000007889d000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400