BUG at fs/jfs/jfs_txnmgr.c:662 assert(last)
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kernel BUG at fs/jfs/jfs_txnmgr.c:662!
Internal error: Oops - BUG: 00000000f2000800 [#1]  SMP
Modules linked in:
CPU: 1 UID: 0 PID: 7015 Comm: syz.4.70 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : txLock+0x1604/0x17a8 fs/jfs/jfs_txnmgr.c:662
lr : txLock+0x1604/0x17a8 fs/jfs/jfs_txnmgr.c:662
sp : ffff8000a43a5d40
x29: ffff8000a43a5d60 x28: 1ffff000136c4800 x27: 0000000000000048
x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000004
x23: ffff80009b624000 x22: ffff80009b624000 x21: 0000000000000001
x20: ffff80009b624120 x19: dfff800000000000 x18: 00000000ffffffff
x17: ffff800093304000 x16: ffff800082debe40 x15: 0000000000000001
x14: 1ffff00014874b24 x13: 0000000000000000 x12: 0000000000000000
x11: ffff700014874b25 x10: 0000000000ff0100 x9 : fd1c6eb39f318100
x8 : fd1c6eb39f318100 x7 : ffff80008ae03dd0 x6 : 0000000000000000
x5 : 0000000000000020 x4 : ffff8000a43a5520 x3 : ffff8000807d6834
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 000000000000002b
Call trace:
 txLock+0x1604/0x17a8 fs/jfs/jfs_txnmgr.c:662 (P)
 diWrite+0x368/0x18d4 fs/jfs/jfs_imap.c:654
 txCommit+0x5d0/0x3e00 fs/jfs/jfs_txnmgr.c:1256
 jfs_commit_inode+0x274/0x498 fs/jfs/inode.c:114
 extAlloc+0xa10/0xdc8 fs/jfs/jfs_extent.c:177
 jfs_get_block+0x2bc/0x8b8 fs/jfs/inode.c:254
 __block_write_begin_int+0x53c/0x15e8 fs/buffer.c:2145
 block_write_begin+0xa0/0x128 fs/buffer.c:2256
 jfs_write_begin+0x44/0x88 fs/jfs/inode.c:306
 generic_perform_write+0x244/0x7bc mm/filemap.c:4242
 __generic_file_write_iter+0xfc/0x204 mm/filemap.c:4359
 generic_file_write_iter+0x10c/0x47c mm/filemap.c:4385
 __kernel_write_iter+0x310/0x738 fs/read_write.c:619
 dump_emit_page fs/coredump.c:1298 [inline]
 dump_user_range+0x3e4/0x8dc fs/coredump.c:1372
 elf_core_dump+0x29ec/0x2fbc fs/binfmt_elf.c:2111
 coredump_write+0x1084/0x1900 fs/coredump.c:1049
 vfs_coredump+0x182c/0x2354 fs/coredump.c:1170
 get_signal+0xe38/0x12f8 kernel/signal.c:3019
 arch_do_signal_or_restart+0x1c0/0x4414 arch/arm64/kernel/signal.c:1619
 exit_to_user_mode_loop+0x7c/0x178 kernel/entry/common.c:40
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:81 [inline]
 el0_da+0x174/0x230 arch/arm64/kernel/entry-common.c:541
 el0t_64_sync_handler+0x90/0x12c arch/arm64/kernel/entry-common.c:746
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
Code: b004b063 911b8063 528052c2 9792dde7 (d4210000) 
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