git bisect start
# bad: [e903d6a85368180af5f09bf5d0be0308b757694d] UBUNTU: upstream stable to v4.19.83, v5.3.10
git bisect bad e903d6a85368180af5f09bf5d0be0308b757694d
# good: [e421062fe0c6fba6d639c9ca57e3587171e7664f] UBUNTU: Ubuntu-5.0.0-37.40
git bisect good e421062fe0c6fba6d639c9ca57e3587171e7664f
# bad: [120233013313edb21f4003433af1661e8961739d] tty: serial: owl: Fix the link time qualifier of 'owl_uart_exit()'
git bisect bad 120233013313edb21f4003433af1661e8961739d
# good: [482f7e77e9d7193bc165fab34bb54f142157d270] ARM: dts: Fix wrong clocks for dra7 mcasp
git bisect good 482f7e77e9d7193bc165fab34bb54f142157d270
# bad: [cc337c66ceb8c0bd641a821889fd06016106422f] dm snapshot: rework COW throttling to fix deadlock
git bisect bad cc337c66ceb8c0bd641a821889fd06016106422f
# bad: [1e34b007cda3e2c1eac9aa34fc53ee273bfd86dd] sched: etf: Fix ordering of packets with same txtime
git bisect bad 1e34b007cda3e2c1eac9aa34fc53ee273bfd86dd
# bad: [1078686a99eabb5f627cf0f1e4d9f4a05993917a] blk-mq: honor IO scheduler for multiqueue devices
git bisect bad 1078686a99eabb5f627cf0f1e4d9f4a05993917a
# good: [b020a10a8b5f8227a8e068e57458d05c11d3f412] nvme-tcp: fix wrong stop condition in io_work
git bisect good b020a10a8b5f8227a8e068e57458d05c11d3f412
# good: [3f17c978227db06429ddb6be991f0ea8b4795f0a] nvme-rdma: Fix max_hw_sectors calculation
git bisect good 3f17c978227db06429ddb6be991f0ea8b4795f0a
# good: [c32beef401291e3ca25e8fe3ff0c7890587420df] nvme-rdma: fix possible use-after-free in connect timeout
git bisect good c32beef401291e3ca25e8fe3ff0c7890587420df
# first bad commit: [1078686a99eabb5f627cf0f1e4d9f4a05993917a] blk-mq: honor IO scheduler for multiqueue devices