loop0: detected capacity change from 0 to 32768
find_entry called with index = 0
find_entry called with index = 0
================================================================================
UBSAN: shift-out-of-bounds in fs/jfs/jfs_extent.c:314:16
shift exponent -1 is negative
CPU: 1 PID: 6648 Comm: syz-executor.0 Not tainted 6.1.47-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 dump_stack+0x1c/0x58 lib/dump_stack.c:113
 ubsan_epilogue lib/ubsan.c:151 [inline]
 __ubsan_handle_shift_out_of_bounds+0x2f4/0x36c lib/ubsan.c:321
 extBalloc fs/jfs/jfs_extent.c:314 [inline]
 extAlloc+0xbb8/0xdd0 fs/jfs/jfs_extent.c:122
 jfs_get_block+0x340/0xb98 fs/jfs/inode.c:248
 get_more_blocks fs/direct-io.c:665 [inline]
 do_direct_IO fs/direct-io.c:953 [inline]
 __blockdev_direct_IO+0x14cc/0x3ef4 fs/direct-io.c:1266
 blockdev_direct_IO include/linux/fs.h:3228 [inline]
 jfs_direct_IO+0xf4/0x1e0 fs/jfs/inode.c:336
 generic_file_direct_write+0x234/0x538 mm/filemap.c:3678
 __generic_file_write_iter+0x1bc/0x388 mm/filemap.c:3838
 generic_file_write_iter+0xb8/0x2b4 mm/filemap.c:3914
 do_iter_write+0x534/0x964 fs/read_write.c:861
 vfs_iter_write+0x88/0xac fs/read_write.c:902
 iter_file_splice_write+0x618/0xc48 fs/splice.c:686
 do_splice_from fs/splice.c:764 [inline]
 direct_splice_actor+0xe4/0x1c0 fs/splice.c:931
 splice_direct_to_actor+0x3c4/0x944 fs/splice.c:886
 do_splice_direct+0x1f4/0x334 fs/splice.c:974
 do_sendfile+0x4bc/0xc70 fs/read_write.c:1255
 __do_sys_sendfile64 fs/read_write.c:1323 [inline]
 __se_sys_sendfile64 fs/read_write.c:1309 [inline]
 __arm64_sys_sendfile64+0x160/0x3b4 fs/read_write.c:1309
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581
================================================================================