Re: Data corruption in kernel 5.1+ with iSER attached ramdisk

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> oops, it should have been (arg4 & 511) != 0.

Yep, there they are:

# /usr/share/bcc/tools/trace -K 'bio_add_page ((arg4 & 511) != 0) "%d
%d", arg3, arg4'
PID     TID     COMM            FUNC             -
7411    7411    kworker/31:1H   bio_add_page     512 76
        bio_add_page+0x1 [kernel]
        sbc_execute_rw+0x28 [kernel]
        __target_execute_cmd+0x2e [kernel]
        target_execute_cmd+0x1c1 [kernel]
        iscsit_execute_cmd+0x1e7 [kernel]
        iscsit_sequence_cmd+0xdc [kernel]
        isert_recv_done+0x780 [kernel]
        __ib_process_cq+0x78 [kernel]
        ib_cq_poll_work+0x29 [kernel]
        process_one_work+0x179 [kernel]
        worker_thread+0x4f [kernel]
        kthread+0x105 [kernel]
        ret_from_fork+0x1f [kernel]

7753    7753    kworker/26:1H   bio_add_page     4096 76
        bio_add_page+0x1 [kernel]
        sbc_execute_rw+0x28 [kernel]
        __target_execute_cmd+0x2e [kernel]
        target_execute_cmd+0x1c1 [kernel]
        iscsit_execute_cmd+0x1e7 [kernel]
        iscsit_sequence_cmd+0xdc [kernel]
        isert_recv_done+0x780 [kernel]
        __ib_process_cq+0x78 [kernel]
        ib_cq_poll_work+0x29 [kernel]
        process_one_work+0x179 [kernel]
        worker_thread+0x4f [kernel]
        kthread+0x105 [kernel]
        ret_from_fork+0x1f [kernel]



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