Warning: Permanently added '10.128.0.62' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   36.015083][ T4314] loop0: detected capacity change from 0 to 32768
[   36.266441][ T4314] ================================================================================
[   36.268988][ T4314] UBSAN: shift-out-of-bounds in fs/jfs/jfs_extent.c:314:16
[   36.270760][ T4314] shift exponent -1 is negative
[   36.272053][ T4314] CPU: 0 PID: 4314 Comm: syz-executor368 Not tainted 6.1.21-syzkaller #0
[   36.274107][ T4314] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
[   36.276544][ T4314] Call trace:
[   36.277388][ T4314]  dump_backtrace+0x1c8/0x1f4
[   36.278568][ T4314]  show_stack+0x2c/0x3c
[   36.279611][ T4314]  dump_stack_lvl+0x108/0x170
[   36.280799][ T4314]  dump_stack+0x1c/0x5c
[   36.281858][ T4314]  __ubsan_handle_shift_out_of_bounds+0x2f4/0x36c
[   36.283553][ T4314]  extAlloc+0xbb8/0xdd0
[   36.284593][ T4314]  jfs_get_block+0x340/0xb98
[   36.285807][ T4314]  __block_write_begin_int+0x340/0x13b4
[   36.287218][ T4314]  block_write_begin+0x98/0x11c
[   36.288471][ T4314]  jfs_write_begin+0x44/0x88
[   36.289638][ T4314]  generic_perform_write+0x278/0x55c
[   36.291110][ T4314]  __generic_file_write_iter+0x168/0x388
[   36.292616][ T4314]  generic_file_write_iter+0xb8/0x2b4
[   36.293987][ T4314]  vfs_write+0x610/0x914
[   36.295055][ T4314]  ksys_write+0x15c/0x26c
[   36.296211][ T4314]  __arm64_sys_write+0x7c/0x90
[   36.297384][ T4314]  invoke_syscall+0x98/0x2c0
[   36.298542][ T4314]  el0_svc_common+0x138/0x258
[   36.299744][ T4314]  do_el0_svc+0x64/0x218
[   36.300806][ T4314]  el0_svc+0x58/0x168
[   36.301782][ T4314]  el0t_64_sync_handler+0x84/0xf0
[   36.303027][ T4314]  el0t_64_sync+0x18c/0x190
[   36.304312][ T4314] ================================================================================
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