Warning: Permanently added '10.128.0.224' (ECDSA) to the list of known hosts. executing program [ 36.262789][ T5971] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5971 'syz-executor181' [ 36.419369][ T5971] loop0: detected capacity change from 0 to 32768 [ 36.654691][ T5971] ================================================================================ [ 36.656823][ T5971] UBSAN: shift-out-of-bounds in fs/jfs/jfs_extent.c:314:16 [ 36.658488][ T5971] shift exponent -1 is negative [ 36.659521][ T5971] CPU: 0 PID: 5971 Comm: syz-executor181 Not tainted 6.4.0-rc7-syzkaller-ge40939bbfc68 #0 [ 36.661482][ T5971] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 [ 36.663605][ T5971] Call trace: [ 36.664273][ T5971] dump_backtrace+0x1b8/0x1e4 [ 36.665178][ T5971] show_stack+0x2c/0x44 [ 36.666073][ T5971] dump_stack_lvl+0xd0/0x124 [ 36.667110][ T5971] dump_stack+0x1c/0x28 [ 36.667999][ T5971] __ubsan_handle_shift_out_of_bounds+0x2f4/0x36c [ 36.669354][ T5971] extAlloc+0xbb8/0xdd0 [ 36.670261][ T5971] jfs_get_block+0x340/0xb98 [ 36.671253][ T5971] __block_write_begin_int+0x460/0x1790 [ 36.672402][ T5971] block_write_begin+0x98/0x11c [ 36.673475][ T5971] jfs_write_begin+0x44/0x88 [ 36.674485][ T5971] generic_perform_write+0x278/0x55c [ 36.675648][ T5971] __generic_file_write_iter+0x168/0x388 [ 36.676826][ T5971] generic_file_write_iter+0xb8/0x2b4 [ 36.677989][ T5971] vfs_write+0x618/0x918 [ 36.678857][ T5971] ksys_write+0x15c/0x26c [ 36.679783][ T5971] __arm64_sys_write+0x7c/0x90 [ 36.680860][ T5971] invoke_syscall+0x98/0x2c0 [ 36.681901][ T5971] el0_svc_common+0x138/0x244 [ 36.682879][ T5971] do_el0_svc+0x64/0x198 [ 36.683792][ T5971] el0_svc+0x4c/0x160 [ 36.684581][ T5971] el0t_64_sync_handler+0x84/0xfc [ 36.685662][ T5971] el0t_64_sync+0x190/0x194 [ 36.686727][ T5971] ================================================================================