------------[ cut here ]------------ kernel BUG at fs/ocfs2/alloc.c:6002! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 5755 Comm: syz.6.218 Not tainted 5.15.179-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:__ocfs2_flush_truncate_log+0x1077/0x11c0 fs/ocfs2/alloc.c:6002 Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 8a fb ff ff 48 89 df e8 1a f5 8f fe e9 7d fb ff ff e8 60 02 46 fe 0f 0b e8 59 02 46 fe <0f> 0b 65 44 8b 2d e7 7a c7 7c bf 07 00 00 00 44 89 ee e8 a2 05 46 RSP: 0018:ffffc900031ef5c0 EFLAGS: 00010293 RAX: ffffffff833a9a67 RBX: 00000000ffffffff RCX: ffff88807b37bb80 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 RBP: ffffc900031ef7d0 R08: ffffffff833a8bbe R09: fffff5200063dea1 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc900031ef6e0 R13: ffff88805adb0878 R14: ffff88807ec97a00 R15: ffff88805fdc2c00 FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcdf2a11000 CR3: 000000007ea5c000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ocfs2_flush_truncate_log+0x4b/0x60 fs/ocfs2/alloc.c:6067 ocfs2_sync_fs+0x121/0x380 fs/ocfs2/super.c:403 sync_filesystem+0x1bc/0x220 fs/sync.c:66 generic_shutdown_super+0x6b/0x310 fs/super.c:448 kill_block_super+0x7a/0xe0 fs/super.c:1427 deactivate_locked_super+0xa0/0x110 fs/super.c:335 cleanup_mnt+0x44e/0x500 fs/namespace.c:1143 task_work_run+0x129/0x1a0 kernel/task_work.c:188 exit_task_work include/linux/task_work.h:33 [inline] do_exit+0x6a3/0x2480 kernel/exit.c:874 do_group_exit+0x144/0x310 kernel/exit.c:996 get_signal+0xc66/0x14e0 kernel/signal.c:2900 arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:867 handle_signal_work kernel/entry/common.c:154 [inline] exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:178 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307 ret_from_fork+0x15/0x30 arch/x86/entry/entry_64.S:280 RIP: 0033:0x7fed20d20169 Code: Unable to access opcode bytes at RIP 0x7fed20d2013f. RSP: 002b:00007fed1eb88fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: 0000000000000000 RBX: 00007fed20f38fa0 RCX: 00007fed20d20169 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fed20da12a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fed20f38fa0 R15: 00007ffc9e4aa5c8 Modules linked in: ---[ end trace d73a29133c13d6f9 ]--- RIP: 0010:__ocfs2_flush_truncate_log+0x1077/0x11c0 fs/ocfs2/alloc.c:6002 Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 8a fb ff ff 48 89 df e8 1a f5 8f fe e9 7d fb ff ff e8 60 02 46 fe 0f 0b e8 59 02 46 fe <0f> 0b 65 44 8b 2d e7 7a c7 7c bf 07 00 00 00 44 89 ee e8 a2 05 46 RSP: 0018:ffffc900031ef5c0 EFLAGS: 00010293 RAX: ffffffff833a9a67 RBX: 00000000ffffffff RCX: ffff88807b37bb80 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 RBP: ffffc900031ef7d0 R08: ffffffff833a8bbe R09: fffff5200063dea1 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc900031ef6e0 R13: ffff88805adb0878 R14: ffff88807ec97a00 R15: ffff88805fdc2c00 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000556a69c02a18 CR3: 000000007ea5c000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400