================================================================================
UBSAN: shift-out-of-bounds in fs/jfs/jfs_dmap.c:476:12
shift exponent -2022965248 is negative
CPU: 0 PID: 107 Comm: jfsCommit Not tainted 6.5.0-rc5-syzkaller-00056-gcacc6e22932f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 ubsan_epilogue lib/ubsan.c:217 [inline]
 __ubsan_handle_shift_out_of_bounds+0x3c3/0x420 lib/ubsan.c:387
 dbUpdatePMap+0xe4e/0xf50 fs/jfs/jfs_dmap.c:476
 txAllocPMap+0x57b/0x6b0 fs/jfs/jfs_txnmgr.c:2425
 txUpdateMap+0x7cc/0x9e0 fs/jfs/jfs_txnmgr.c:2363
 txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline]
 jfs_lazycommit+0x47a/0xb70 fs/jfs/jfs_txnmgr.c:2732
 kthread+0x2b8/0x350 kernel/kthread.c:389
 ret_from_fork+0x2e/0x60 arch/x86/kernel/process.c:145
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </TASK>
================================================================================
Kernel panic - not syncing: UBSAN: panic_on_warn set ...
CPU: 0 PID: 107 Comm: jfsCommit Not tainted 6.5.0-rc5-syzkaller-00056-gcacc6e22932f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 panic+0x30f/0x770 kernel/panic.c:340
 check_panic_on_warn+0x82/0xa0 kernel/panic.c:236
 ubsan_epilogue lib/ubsan.c:223 [inline]
 __ubsan_handle_shift_out_of_bounds+0x3e2/0x420 lib/ubsan.c:387
 dbUpdatePMap+0xe4e/0xf50 fs/jfs/jfs_dmap.c:476
 txAllocPMap+0x57b/0x6b0 fs/jfs/jfs_txnmgr.c:2425
 txUpdateMap+0x7cc/0x9e0 fs/jfs/jfs_txnmgr.c:2363
 txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline]
 jfs_lazycommit+0x47a/0xb70 fs/jfs/jfs_txnmgr.c:2732
 kthread+0x2b8/0x350 kernel/kthread.c:389
 ret_from_fork+0x2e/0x60 arch/x86/kernel/process.c:145
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </TASK>
Kernel Offset: disabled
Rebooting in 86400 seconds..