Warning: Permanently added '10.128.1.78' (ECDSA) to the list of known hosts.
executing program
[   43.150795][ T4053] loop0: detected capacity change from 0 to 32768
[   43.496138][ T4053] ================================================================================
[   43.498533][ T4053] UBSAN: shift-out-of-bounds in fs/jfs/jfs_extent.c:511:16
[   43.500240][ T4053] shift exponent -1 is negative
[   43.501409][ T4053] CPU: 1 PID: 4053 Comm: syz-executor304 Not tainted 5.15.102-syzkaller #0
[   43.503407][ T4053] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
[   43.505781][ T4053] Call trace:
[   43.506553][ T4053]  dump_backtrace+0x0/0x530
[   43.507631][ T4053]  show_stack+0x2c/0x3c
[   43.508624][ T4053]  dump_stack_lvl+0x108/0x170
[   43.509739][ T4053]  dump_stack+0x1c/0x58
[   43.510749][ T4053]  __ubsan_handle_shift_out_of_bounds+0x2f8/0x378
[   43.512289][ T4053]  extAlloc+0xbd4/0xe38
[   43.513277][ T4053]  jfs_get_block+0x34c/0xbfc
[   43.514394][ T4053]  nobh_write_begin+0x2d8/0xa28
[   43.515553][ T4053]  jfs_write_begin+0x58/0xa0
[   43.516669][ T4053]  generic_perform_write+0x24c/0x520
[   43.517965][ T4053]  __generic_file_write_iter+0x230/0x454
[   43.519332][ T4053]  generic_file_write_iter+0xb4/0x1b8
[   43.520649][ T4053]  vfs_write+0x87c/0xb3c
[   43.521635][ T4053]  ksys_write+0x15c/0x26c
[   43.522690][ T4053]  __arm64_sys_write+0x7c/0x90
[   43.523823][ T4053]  invoke_syscall+0x98/0x2b8
[   43.524978][ T4053]  el0_svc_common+0x138/0x258
[   43.526113][ T4053]  do_el0_svc+0x58/0x14c
[   43.527155][ T4053]  el0_svc+0x7c/0x1f0
[   43.528086][ T4053]  el0t_64_sync_handler+0x84/0xe4
[   43.529287][ T4053]  el0t_64_sync+0x1a0/0x1a4
[   43.530475][ T4053] ================================================================================