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] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4759 Comm: syz.3.90 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : txLock+0x1694/0x1828 fs/jfs/jfs_txnmgr.c:662
lr : txLock+0x1694/0x1828 fs/jfs/jfs_txnmgr.c:662
sp : ffff8000218a6700
x29: ffff8000218a6730 x28: 1ffff0000401d400 x27: 0000000000000048
x26: 0000000000000000 x25: 0000000000000000 x24: 000000000000000a
x23: ffff8000200ea000 x22: ffff8000200ea000 x21: 0000000000000003
x20: ffff8000200ea2d0 x19: dfff800000000000 x18: 0000000000000000
x17: 0000000000000000 x16: ffff800011a529a8 x15: 0000000000000000
x14: 0000000000000001 x13: 1ffff00004314c48 x12: 0000000000ff0100
x11: ff008000083121f4 x10: 0000000000000000 x9 : b880667341b51300
x8 : b880667341b51300 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff8000218a61d8 x4 : ffff800015324ea0 x3 : ffff80000a893cf0
x2 : ffff00019f51cd10 x1 : 0000000100000000 x0 : 000000000000002b
Call trace:
 txLock+0x1694/0x1828 fs/jfs/jfs_txnmgr.c:662
 diWrite+0x350/0x11e4 fs/jfs/jfs_imap.c:654
 txCommit+0x5e0/0x3bf8 fs/jfs/jfs_txnmgr.c:1256
 jfs_commit_inode+0x274/0x498 fs/jfs/inode.c:114
 extAlloc+0xa14/0xdb8 fs/jfs/jfs_extent.c:172
 jfs_get_block+0x2c4/0x8c0 fs/jfs/inode.c:254
 __block_write_begin_int+0x350/0x1388 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+0x234/0x4f4 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+0x208/0x56c fs/read_write.c:517
 dump_emit_page fs/coredump.c:950 [inline]
 dump_user_range+0x314/0x5e4 fs/coredump.c:977
 elf_core_dump+0x2880/0x2da0 fs/binfmt_elf.c:2354
 do_coredump+0x10cc/0x1c68 fs/coredump.c:824
 get_signal+0xdec/0x1304 kernel/signal.c:2857
 do_signal arch/arm64/kernel/signal.c:1095 [inline]
 do_notify_resume+0x28c/0x2aa4 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: b00432c3 910d0063 528052c2 979d4d9b (d4210000) 
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