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kernel BUG at fs/ocfs2/uptodate.c:509!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 12606 Comm: syz.1.1765 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:ocfs2_set_new_buffer_uptodate+0x149/0x170
Code: 80 3c 20 00 74 08 4c 89 f7 e8 43 fe 74 fe 4d 8b 1e 48 89 df 5b 41 5c 41 5d 41 5e 41 5f 5d 2e e9 dd 64 ce 07 e8 08 90 11 fe 90 <0f> 0b e8 00 90 11 fe 90 0f 0b e8 f8 8f 11 fe 90 0f 0b e8 f0 8f 11
RSP: 0018:ffffc900037adaa8 EFLAGS: 00010293
RAX: ffffffff83ae1b88 RBX: ffff88803692df30 RCX: ffff888108c7d640
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffffff8fa38a37 R09: 1ffffffff1f47146
R10: dffffc0000000000 R11: fffffbfff1f47147 R12: 1ffff920006f5b88
R13: dffffc0000000000 R14: ffff88812e128e80 R15: ffff88812e128e80
FS:  00007fb9761b06c0(0000) GS:ffff8881a3c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f17b65bd000 CR3: 0000000042e5c000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 ocfs2_extend_dir+0x1172/0x4870
 ocfs2_prepare_dir_for_insert+0x3d7b/0x5450
 ocfs2_mknod+0x819/0x2050
 ocfs2_create+0x1a5/0x440
 path_openat+0x14f4/0x3830
 do_filp_open+0x1fa/0x410
 filp_open+0x176/0x1d0
 coredump_file+0x33e/0xaf0
 vfs_coredump+0x1688/0x2a50
 get_signal+0x1109/0x1340
 arch_do_signal_or_restart+0x9a/0x750
 irqentry_exit_to_user_mode+0x81/0x120
 exc_page_fault+0x9f/0xf0
 asm_exc_page_fault+0x26/0x30
RIP: 0033:0x7fb97538ebe9
Code: Unable to access opcode bytes at 0x7fb97538ebbf.
RSP: 002b:00007fb9761affe8 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 00007fb9755c6090 RCX: 00007fb97538ebe9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000400
RBP: 00007fb975411e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fb9755c6128 R14: 00007fb9755c6090 R15: 00007ffd038be158
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_set_new_buffer_uptodate+0x149/0x170
Code: 80 3c 20 00 74 08 4c 89 f7 e8 43 fe 74 fe 4d 8b 1e 48 89 df 5b 41 5c 41 5d 41 5e 41 5f 5d 2e e9 dd 64 ce 07 e8 08 90 11 fe 90 <0f> 0b e8 00 90 11 fe 90 0f 0b e8 f8 8f 11 fe 90 0f 0b e8 f0 8f 11
RSP: 0018:ffffc900037adaa8 EFLAGS: 00010293
RAX: ffffffff83ae1b88 RBX: ffff88803692df30 RCX: ffff888108c7d640
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffffff8fa38a37 R09: 1ffffffff1f47146
R10: dffffc0000000000 R11: fffffbfff1f47147 R12: 1ffff920006f5b88
R13: dffffc0000000000 R14: ffff88812e128e80 R15: ffff88812e128e80
FS:  00007fb9761b06c0(0000) GS:ffff8881a3c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3240dff8 CR3: 0000000042e5c000 CR4: 00000000000006f0
