ERROR: (device loop5): xtTruncate: XT_GETPAGE: xtree page corrupt
BUG at fs/jfs/jfs_txnmgr.c:529 assert(tblk->next == 0)
------------[ cut here ]------------
kernel BUG at fs/jfs/jfs_txnmgr.c:529!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 8851 Comm: syz.5.464 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:txEnd+0x51e/0x520 fs/jfs/jfs_txnmgr.c:529
Code: fe e9 cc fe ff ff e8 91 70 7f fe 48 c7 c7 80 17 04 8b 48 c7 c6 79 13 04 8b ba 11 02 00 00 48 c7 c1 c0 17 04 8b e8 a2 a8 7d 07 <0f> 0b f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4
RSP: 0018:ffffc90004ed7060 EFLAGS: 00010246
RAX: 0000000000000036 RBX: ffff88806ad46000 RCX: a59f744ab322dd00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90002619112 R08: ffffc90004ed6c67 R09: 1ffff920009dad8c
R10: dffffc0000000000 R11: fffff520009dad8d R12: 1ffff920004c3227
R13: dffffc0000000000 R14: ffffc90002619138 R15: 0000000000000003
FS:  00007f6cc0c126c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6764600020 CR3: 000000006c3be000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 jfs_truncate_nolock+0x2a9/0x330 fs/jfs/inode.c:397
 jfs_truncate fs/jfs/inode.c:418 [inline]
 jfs_write_failed+0x11e/0x1a0 fs/jfs/inode.c:295
 jfs_write_begin+0x6a/0x70 fs/jfs/inode.c:307
 generic_perform_write+0x2fe/0x5c0 mm/filemap.c:4036
 generic_file_write_iter+0xaf/0x2e0 mm/filemap.c:4157
 __kernel_write_iter+0x29f/0x6d0 fs/read_write.c:517
 dump_emit_page fs/coredump.c:958 [inline]
 dump_user_range+0x418/0x840 fs/coredump.c:985
 elf_core_dump+0x320e/0x37c0 fs/binfmt_elf.c:2184
 do_coredump+0x1791/0x24a0 fs/coredump.c:834
 get_signal+0x10da/0x1390 kernel/signal.c:2901
 arch_do_signal_or_restart+0xc2/0x7b0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:213
 irqentry_exit_to_user_mode+0x9/0x30 kernel/entry/common.c:318
 exc_page_fault+0x8c/0x100 arch/x86/mm/fault.c:1519
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:608
RIP: 0033:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 002b:0000200000000448 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f6cc0025fa0 RCX: 00007f6cbfd9e159
RDX: 0000000000000000 RSI: 0000200000000440 RDI: 0000000002000000
RBP: 00007f6cbfe3506b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f6cc0026038 R14: 00007f6cc0025fa0 R15: 00007ffdbb1f5df8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:txEnd+0x51e/0x520 fs/jfs/jfs_txnmgr.c:529
Code: fe e9 cc fe ff ff e8 91 70 7f fe 48 c7 c7 80 17 04 8b 48 c7 c6 79 13 04 8b ba 11 02 00 00 48 c7 c1 c0 17 04 8b e8 a2 a8 7d 07 <0f> 0b f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4
RSP: 0018:ffffc90004ed7060 EFLAGS: 00010246
RAX: 0000000000000036 RBX: ffff88806ad46000 RCX: a59f744ab322dd00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90002619112 R08: ffffc90004ed6c67 R09: 1ffff920009dad8c
R10: dffffc0000000000 R11: fffff520009dad8d R12: 1ffff920004c3227
R13: dffffc0000000000 R14: ffffc90002619138 R15: 0000000000000003
FS:  00007f6cc0c126c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6764600020 CR3: 000000006c3be000 CR4: 00000000003506e0