BUG at fs/jfs/jfs_txnmgr.c:662 assert(last)
------------[ cut here ]------------
kernel BUG at fs/jfs/jfs_txnmgr.c:662!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 6990 Comm: syz.0.680 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : txLock+0x1714/0x18ac fs/jfs/jfs_txnmgr.c:662
lr : txLock+0x1714/0x18ac fs/jfs/jfs_txnmgr.c:662
sp : ffff800021826800
x29: ffff800021826830 x28: 0000000000000048 x27: 0000000000008001
x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000002
x23: ffff80002021a000 x22: ffff80002021a000 x21: dfff800000000000
x20: ffff80002021a090 x19: 1ffff00004043400 x18: 1fffe00033e7697e
x17: ffff80001537d000 x16: ffff800011b90080 x15: 000000000004ffff
x14: 0000000000000001 x13: 1fffe00033e769a3 x12: 0000000000000000
x11: ff00800008315484 x10: 0000000000000000 x9 : 792c56b503982a00
x8 : 792c56b503982a00 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff8000218262d8 x4 : ffff800015464e80 x3 : ffff800008540904
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 000000000000002b
Call trace:
 txLock+0x1714/0x18ac fs/jfs/jfs_txnmgr.c:662
 diWrite+0x354/0x1268 fs/jfs/jfs_imap.c:654
 txCommit+0x608/0x3d34 fs/jfs/jfs_txnmgr.c:1256
 jfs_commit_inode+0x274/0x498 fs/jfs/inode.c:114
 extAlloc+0x9e0/0xda0 fs/jfs/jfs_extent.c:172
 jfs_get_block+0x2cc/0x8cc fs/jfs/inode.c:254
 __block_write_begin_int+0x3d8/0x13c0 fs/buffer.c:1991
 __block_write_begin fs/buffer.c:2041 [inline]
 block_write_begin+0x98/0x11c fs/buffer.c:2102
 jfs_write_begin+0x44/0x88 fs/jfs/inode.c:310
 generic_perform_write+0x240/0x508 mm/filemap.c:3862
 __generic_file_write_iter+0x130/0x250 mm/filemap.c:3960
 generic_file_write_iter+0xb4/0x2b0 mm/filemap.c:3989
 __kernel_write_iter+0x1ec/0x54c fs/read_write.c:517
 dump_emit_page fs/coredump.c:950 [inline]
 dump_user_range+0x2f4/0x5c4 fs/coredump.c:977
 elf_core_dump+0x2900/0x2e14 fs/binfmt_elf.c:2354
 do_coredump+0x10dc/0x1c90 fs/coredump.c:824
 get_signal+0xdfc/0x133c kernel/signal.c:2866
 do_signal arch/arm64/kernel/signal.c:1095 [inline]
 do_notify_resume+0x2a8/0x2c84 arch/arm64/kernel/signal.c:1148
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
 el0_da+0xb4/0x144 arch/arm64/kernel/entry-common.c:516
 el0t_64_sync_handler+0x90/0xf0 arch/arm64/kernel/entry-common.c:658
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Code: 90043b63 91380063 528052c2 979c9d8d (d4210000) 
---[ end trace 0000000000000000 ]---