bisecting cause commit starting from 7fef2edf7cc753b51f7ccc74993971b0a9c81eca
building syzkaller on f415556d566aa67761414184f49b919c0869ed52
testing commit 7fef2edf7cc753b51f7ccc74993971b0a9c81eca with gcc (GCC) 10.2.1 20210217
kernel signature: 80c91d4f98bb0ed03132c60a1e13e999fce4200a13b1258b18281dbd6d0aa6d6
run #0: crashed: kernel BUG in io_queue_async_work
run #1: crashed: kernel BUG in io_queue_async_work
run #2: crashed: kernel BUG in io_queue_async_work
run #3: crashed: BUG: sleeping function called from invalid context in lock_sock_nested
run #4: crashed: possible deadlock in fs_reclaim_acquire
run #5: crashed: kernel BUG in io_queue_async_work
run #6: crashed: kernel BUG in io_queue_async_work
run #7: crashed: kernel BUG in io_queue_async_work
run #8: crashed: kernel BUG in io_queue_async_work
run #9: crashed: kernel BUG in io_queue_async_work
run #10: crashed: kernel BUG in io_queue_async_work
run #11: crashed: kernel BUG in io_queue_async_work
run #12: crashed: kernel BUG in io_queue_async_work
run #13: crashed: kernel BUG in io_queue_async_work
run #14: crashed: kernel BUG in io_queue_async_work
run #15: crashed: kernel BUG in io_queue_async_work
run #16: crashed: kernel BUG in io_queue_async_work
run #17: crashed: kernel BUG in io_queue_async_work
run #18: crashed: kernel BUG in io_queue_async_work
run #19: crashed: kernel BUG in io_queue_async_work
testing release v5.13
testing commit 62fb9874f5da54fdb243003b386128037319b219 with gcc (GCC) 10.2.1 20210217
kernel signature: b498d4d41e50e869e291e833b63570f7613e27297c0e4dce30db7416d7683ef6
all runs: OK
# git bisect start 7fef2edf7cc753b51f7ccc74993971b0a9c81eca 62fb9874f5da54fdb243003b386128037319b219
Bisecting: 6640 revisions left to test after this (roughly 13 steps)
[e058a84bfddc42ba356a2316f2cf1141974625c9] Merge tag 'drm-next-2021-07-01' of git://anongit.freedesktop.org/drm/drm

testing commit e058a84bfddc42ba356a2316f2cf1141974625c9 with gcc (GCC) 10.2.1 20210217
kernel signature: 4396288da3d1518e7919c6406dde5a1770af96be73dcd03c55a0af67d188dc92
run #0: basic kernel testing failed: BUG: sleeping function called from invalid context in stack_depot_save
run #1: OK
run #2: OK
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
# git bisect good e058a84bfddc42ba356a2316f2cf1141974625c9
Bisecting: 3223 revisions left to test after this (roughly 12 steps)
[eed0218e8cae9fcd186c30e9fcf5fe46a87e056e] Merge tag 'char-misc-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

testing commit eed0218e8cae9fcd186c30e9fcf5fe46a87e056e with gcc (GCC) 10.2.1 20210217
kernel signature: f8a5383e99a7ae0920b2052c8988734439cea66c075b43420e14aa328e47932b
run #0: boot failed: BUG: sleeping function called from invalid context in stack_depot_save
run #1: boot failed: possible deadlock in get_page_from_freelist
run #2: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #3: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #4: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #5: boot failed: BUG: sleeping function called from invalid context in stack_depot_save
run #6: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #7: boot failed: possible deadlock in fs_reclaim_acquire
run #8: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #9: boot failed: BUG: sleeping function called from invalid context in stack_depot_save
# git bisect skip eed0218e8cae9fcd186c30e9fcf5fe46a87e056e
Bisecting: 3223 revisions left to test after this (roughly 12 steps)
[f92a322a63517a798f2da57d56b483a6ae8f45a1] Merge branch 'work.d_path' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

testing commit f92a322a63517a798f2da57d56b483a6ae8f45a1 with gcc (GCC) 10.2.1 20210217
kernel signature: 398a98328f16b318ec8f55f30774e5733ff962104cfd2a3586d8ce5b22bffce9
run #0: boot failed: BUG: sleeping function called from invalid context in stack_depot_save
run #1: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #2: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #3: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #4: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #5: boot failed: possible deadlock in fs_reclaim_acquire
run #6: boot failed: possible deadlock in fs_reclaim_acquire
run #7: boot failed: BUG: sleeping function called from invalid context in stack_depot_save
run #8: boot failed: possible deadlock in get_page_from_freelist
run #9: boot failed: BUG: sleeping function called from invalid context in stack_depot_save
# git bisect skip f92a322a63517a798f2da57d56b483a6ae8f45a1
Bisecting: 3223 revisions left to test after this (roughly 12 steps)
[27c707b14659287f793402ad8ca26ada7e3e8c51] scsi: qla2xxx: Log PCI address in qla_nvme_unregister_remote_port()

testing commit 27c707b14659287f793402ad8ca26ada7e3e8c51 with gcc (GCC) 10.2.1 20210217
kernel signature: 8b12f579f7e909db4c7b0d3c0de1a8791ce33a63b29e8fdb7d041827ccc83f65
all runs: OK
# git bisect good 27c707b14659287f793402ad8ca26ada7e3e8c51
Bisecting: 3223 revisions left to test after this (roughly 12 steps)
[463c09d09d426d4dfe1a83e1461e28d6b2d7f66a] Merge tag 'mfd-next-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

testing commit 463c09d09d426d4dfe1a83e1461e28d6b2d7f66a with gcc (GCC) 10.2.1 20210217
kernel signature: d7ef8f57b7d1fddef75033c4408f7fcda8f0de05b92fa08e73eaba7d1eaa47ca
run #0: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #1: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #2: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #3: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #4: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #5: boot failed: BUG: sleeping function called from invalid context in stack_depot_save
run #6: boot failed: BUG: sleeping function called from invalid context in stack_depot_save
run #7: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #8: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #9: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
# git bisect skip 463c09d09d426d4dfe1a83e1461e28d6b2d7f66a
Bisecting: 3223 revisions left to test after this (roughly 12 steps)
[d0ffbfae136a4b0acaaa1aef883c77b990b9fe60] staging: rtl8723bs: remove unused macros tied to _RTL871X_IOCTL_LINUX_C definition

testing commit d0ffbfae136a4b0acaaa1aef883c77b990b9fe60 with gcc (GCC) 10.2.1 20210217
kernel signature: 30093a92efce469a85724608a0ade2b812c7c11fff5db047e2617591b3701bc9
all runs: OK
# git bisect good d0ffbfae136a4b0acaaa1aef883c77b990b9fe60
Bisecting: 3123 revisions left to test after this (roughly 12 steps)
[50be9417e23af5a8ac860d998e1e3f06b8fd79d7] Merge tag 'io_uring-5.14-2021-07-09' of git://git.kernel.dk/linux-block

testing commit 50be9417e23af5a8ac860d998e1e3f06b8fd79d7 with gcc (GCC) 10.2.1 20210217
kernel signature: 5fe59cfcee4487f9ec2bc241bfce79baaba93b0526ded964e59d9e43c3d79db1
run #0: boot failed: BUG: sleeping function called from invalid context in stack_depot_save
run #1: boot failed: BUG: sleeping function called from invalid context in stack_depot_save
run #2: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #3: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #4: boot failed: BUG: sleeping function called from invalid context in stack_depot_save
run #5: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #6: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #7: boot failed: BUG: sleeping function called from invalid context in stack_depot_save
run #8: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #9: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
# git bisect skip 50be9417e23af5a8ac860d998e1e3f06b8fd79d7
Bisecting: 3123 revisions left to test after this (roughly 12 steps)
[b647ceb5a13e0cbe2f47fcc939a87526e1debf10] misc/pvpanic-pci: Use GFP_KERNEL instead of GFP_ATOMIC

testing commit b647ceb5a13e0cbe2f47fcc939a87526e1debf10 with gcc (GCC) 10.2.1 20210217
kernel signature: 2a975c7f66f09cc40ff4e6daac3465f2aad8c4407b47420cb3a5e6aac3173223
all runs: OK
# git bisect good b647ceb5a13e0cbe2f47fcc939a87526e1debf10
Bisecting: 3123 revisions left to test after this (roughly 12 steps)
[304b8fbc950bae102f29ee1e8e8557f2fd08d69a] ARM: dts: rockchip: Remove useless interrupt-names on IOMMU node on rk3036

testing commit 304b8fbc950bae102f29ee1e8e8557f2fd08d69a with gcc (GCC) 10.2.1 20210217
kernel signature: 742ff8adfd8d852269da14244359cb66934fd1a95d210458582b219fc397cb18
all runs: OK
# git bisect good 304b8fbc950bae102f29ee1e8e8557f2fd08d69a
Bisecting: 3118 revisions left to test after this (roughly 12 steps)
[e2cf422ba833658c79681ba86b7c09988f3a0f28] scsi: elx: efct: Hardware queues processing

testing commit e2cf422ba833658c79681ba86b7c09988f3a0f28 with gcc (GCC) 10.2.1 20210217
kernel signature: 2a369e40de95a877d12d36ecd3db993c7c73340d257b0d2313b295c4df48fbdb
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
# git bisect skip e2cf422ba833658c79681ba86b7c09988f3a0f28
Bisecting: 3118 revisions left to test after this (roughly 12 steps)
[13ef29ea4aa0655feab2462966f83e17df5cdad1] scsi: mpi3mr: Add support for device add/remove event handling

testing commit 13ef29ea4aa0655feab2462966f83e17df5cdad1 with gcc (GCC) 10.2.1 20210217
kernel signature: ed90e6411843bbed0ae434b32b2d58d19ee4a069b64248598606314f8407c90f
all runs: OK
# git bisect good 13ef29ea4aa0655feab2462966f83e17df5cdad1
Bisecting: 3118 revisions left to test after this (roughly 12 steps)
[92babc9938ebbf4050f2fba774836f7edc16a570] iio: prox: isl29501: Fix buffer alignment in iio_push_to_buffers_with_timestamp()

testing commit 92babc9938ebbf4050f2fba774836f7edc16a570 with gcc (GCC) 10.2.1 20210217
kernel signature: 5d139eb70ae1e177fb28db75cecf4e97e5209cd7effaeb1d7a9fe90f62d28d62
all runs: OK
# git bisect good 92babc9938ebbf4050f2fba774836f7edc16a570
Bisecting: 3002 revisions left to test after this (roughly 12 steps)
[18ef082713ad1104c32cd17a15abdc3f43c9b28a] Merge tag 'dmaengine-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine

testing commit 18ef082713ad1104c32cd17a15abdc3f43c9b28a with gcc (GCC) 10.2.1 20210217
kernel signature: 5ac44d440ebd37db8f73366b50a19e376bf400d0da2fd99d6119122fd701c010
run #0: boot failed: possible deadlock in fs_reclaim_acquire
run #1: boot failed: possible deadlock in fs_reclaim_acquire
run #2: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #3: boot failed: possible deadlock in fs_reclaim_acquire
run #4: boot failed: BUG: sleeping function called from invalid context in stack_depot_save
run #5: boot failed: BUG: sleeping function called from invalid context in stack_depot_save
run #6: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #7: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #8: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #9: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
# git bisect skip 18ef082713ad1104c32cd17a15abdc3f43c9b28a
Bisecting: 3002 revisions left to test after this (roughly 12 steps)
[742b80c56135971e35e6753c7400d7d6ee842a90] watchdog/hpwdt: New PCI IDs

testing commit 742b80c56135971e35e6753c7400d7d6ee842a90 with gcc (GCC) 10.2.1 20210217
kernel signature: 01a16857e3db72d269bc89843e2077240de022f0ff61f313b91b1a358a0e6411
all runs: OK
# git bisect good 742b80c56135971e35e6753c7400d7d6ee842a90
Bisecting: 2987 revisions left to test after this (roughly 12 steps)
[b9639b3155d9fac737742324443d3f36ff7abc7c] s390/ap: get rid of register asm

testing commit b9639b3155d9fac737742324443d3f36ff7abc7c with gcc (GCC) 10.2.1 20210217
kernel signature: 6ffb0752492cc1fc07e39fa6e17731438c447ef245ce25c0a45dba4535ec9e7b
run #0: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #1: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #2: boot failed: possible deadlock in fs_reclaim_acquire
run #3: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #4: boot failed: BUG: sleeping function called from invalid context in stack_depot_save
run #5: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #6: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #7: boot failed: possible deadlock in get_page_from_freelist
run #8: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #9: boot failed: BUG: sleeping function called from invalid context in stack_depot_save
# git bisect skip b9639b3155d9fac737742324443d3f36ff7abc7c
Bisecting: 2987 revisions left to test after this (roughly 12 steps)
[fa99e7013827858b9cfe43ebe539b9060a7861e8] pinctrl: zynqmp: some code cleanups

testing commit fa99e7013827858b9cfe43ebe539b9060a7861e8 with gcc (GCC) 10.2.1 20210217
kernel signature: 742ff8adfd8d852269da14244359cb66934fd1a95d210458582b219fc397cb18
all runs: OK
# git bisect good fa99e7013827858b9cfe43ebe539b9060a7861e8
Bisecting: 2902 revisions left to test after this (roughly 12 steps)
[cfb0276373dfb5dccef0f60df0d1f7c0328918a7] Merge tag 'v5.13-rc7' into usb-next

testing commit cfb0276373dfb5dccef0f60df0d1f7c0328918a7 with gcc (GCC) 10.2.1 20210217
kernel signature: 216cc43636156e1302a64854349686c9ff2552128c6a760cd54a3a748b6b5986
all runs: OK
# git bisect good cfb0276373dfb5dccef0f60df0d1f7c0328918a7
Bisecting: 2842 revisions left to test after this (roughly 12 steps)
[b8052599420cd94505baec1f22b4e7c9e5ae5fce] Merge tag 'gpio-updates-for-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

testing commit b8052599420cd94505baec1f22b4e7c9e5ae5fce with gcc (GCC) 10.2.1 20210217
kernel signature: 36824f20bcc8713ed3c3015e006dbd85ca28b7af23b35da0e4e0f4f482e10279
run #0: boot failed: BUG: sleeping function called from invalid context in stack_depot_save
run #1: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #2: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #3: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #4: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #5: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #6: boot failed: BUG: sleeping function called from invalid context in stack_depot_save
run #7: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
run #8: boot failed: possible deadlock in fs_reclaim_acquire
run #9: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
# git bisect skip b8052599420cd94505baec1f22b4e7c9e5ae5fce
Bisecting: 2842 revisions left to test after this (roughly 12 steps)
[02c5e7c2db2bdfe227dd3e7f6febd732ccec5440] thunderbolt: Move nfc_credits field to struct tb_path_hop

testing commit 02c5e7c2db2bdfe227dd3e7f6febd732ccec5440 with gcc (GCC) 10.2.1 20210217
kernel signature: 520ef776514aff4d2bab16f3cadcc188bfa5e7120e90b8e302d84174b778250b
all runs: OK
# git bisect good 02c5e7c2db2bdfe227dd3e7f6febd732ccec5440
Bisecting: 2834 revisions left to test after this (roughly 12 steps)
[7732fe168edaea825ed65954712c825f4625f2ba] ceph: don't take s_mutex in ceph_flush_snaps

testing commit 7732fe168edaea825ed65954712c825f4625f2ba with gcc (GCC) 10.2.1 20210217
kernel signature: 640b1f95c024d33504429116d8f15985ffc8fc2a1b39088ac743a0f301afa670
all runs: OK
# git bisect good 7732fe168edaea825ed65954712c825f4625f2ba
Bisecting: 2816 revisions left to test after this (roughly 12 steps)
[e5e1bdf0bca8cd16ad39ed2febf6f689d9c07586] virtio/s390: get rid of open-coded kvm hypercall

testing commit e5e1bdf0bca8cd16ad39ed2febf6f689d9c07586 with gcc (GCC) 10.2.1 20210217
kernel signature: df24cc159a39aa177865178eec9a0a739ba8683cb23b0031a7e1bc6f9a68265e
all runs: OK
# git bisect good e5e1bdf0bca8cd16ad39ed2febf6f689d9c07586
Bisecting: 2786 revisions left to test after this (roughly 12 steps)
[6c855fce2e62e5e9b796b23fe15be1d8b2c8bee2] mm/rmap: try_to_migrate() skip zone_device !device_private

testing commit 6c855fce2e62e5e9b796b23fe15be1d8b2c8bee2 with gcc (GCC) 10.2.1 20210217
kernel signature: fcf4c1f10b81eb89258fad8e37c13d568745a992284aea84deed7b644229b000
run #0: basic kernel testing failed: possible deadlock in fs_reclaim_acquire
run #1: crashed: kernel BUG in io_queue_async_work
run #2: crashed: kernel BUG in io_queue_async_work
run #3: crashed: kernel BUG in io_queue_async_work
run #4: crashed: kernel BUG in io_queue_async_work
run #5: crashed: kernel BUG in io_queue_async_work
run #6: crashed: kernel BUG in io_queue_async_work
run #7: crashed: kernel BUG in io_queue_async_work
run #8: crashed: kernel BUG in io_queue_async_work
run #9: crashed: kernel BUG in io_queue_async_work
# git bisect bad 6c855fce2e62e5e9b796b23fe15be1d8b2c8bee2
Bisecting: 2782 revisions left to test after this (roughly 12 steps)
[199cf8c3feec2947015da84643312790b21531cb] cxl/pci.c: Add a 'label_storage_size' attribute to the memdev

testing commit 199cf8c3feec2947015da84643312790b21531cb with gcc (GCC) 10.2.1 20210217
kernel signature: 742ff8adfd8d852269da14244359cb66934fd1a95d210458582b219fc397cb18
all runs: OK
# git bisect good 199cf8c3feec2947015da84643312790b21531cb
Bisecting: 2782 revisions left to test after this (roughly 12 steps)
[d5add08fcbce35faeeffa62d7e8f21fd979d8420] ASoC: codecs: wcd938x: add capture dapm widgets

testing commit d5add08fcbce35faeeffa62d7e8f21fd979d8420 with gcc (GCC) 10.2.1 20210217
kernel signature: 742ff8adfd8d852269da14244359cb66934fd1a95d210458582b219fc397cb18
all runs: OK
# git bisect good d5add08fcbce35faeeffa62d7e8f21fd979d8420
Bisecting: 2697 revisions left to test after this (roughly 11 steps)
[e63ce9a5b3edad84e5f1b3ffb081da7c9847c641] mfd: mt6360: Rename mt6360_pmu_data by mt6360_ddata

testing commit e63ce9a5b3edad84e5f1b3ffb081da7c9847c641 with gcc (GCC) 10.2.1 20210217
kernel signature: ba05ab730aec40550eaab56ffe367cef28b949cd5f7b5a2666c3e5e550a52c3f
all runs: OK
# git bisect good e63ce9a5b3edad84e5f1b3ffb081da7c9847c641
Bisecting: 2689 revisions left to test after this (roughly 11 steps)
[3f8b8e7dbd79086ad48fcff33de9399f3da66a69] Merge tag 'backlight-next-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight

revisions tested: 27, total time: 8h12m50.744840743s (build: 3h17m33.588700889s, test: 4h51m10.137100914s)
error: bisection is taking too long (>8h0m0s), aborting