bisecting cause commit starting from 6880fa6c56601bb8ed59df6c30fd390cc5f6dd8f
building syzkaller on 3ce60af85b4644bd7f2d2ef01a7d2b9a41545b76
testing commit 6880fa6c56601bb8ed59df6c30fd390cc5f6dd8f
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 65895619433c754ce44db3981353c6048e1ca34ec6e78a215e30aa0aa93be4fc
run #0: OK
run #1: OK
run #2: OK
run #3: OK
run #4: OK
run #5: crashed: INFO: task hung in netdev_run_todo
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
reproducer seems to be flaky
testing release v5.14
testing commit 7d2a07b769330c34b4deabeed939325c77a7ec2f
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 8c219514f33cf5f7e995cffb6643e798eb9f0e406da2dbcbb7423680d5a3f503
all runs: OK
# git bisect start 6880fa6c56601bb8ed59df6c30fd390cc5f6dd8f 7d2a07b769330c34b4deabeed939325c77a7ec2f
Bisecting: 5788 revisions left to test after this (roughly 13 steps)
[1b4f3dfb4792f03b139edf10124fcbeb44e608e6] Merge tag 'usb-serial-5.15-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-next

testing commit 1b4f3dfb4792f03b139edf10124fcbeb44e608e6
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 2a21ff9c3775a869ed875a487dbb63bb481a58752b4a2427f39fc52291f831d7
all runs: OK
# git bisect good 1b4f3dfb4792f03b139edf10124fcbeb44e608e6
Bisecting: 2896 revisions left to test after this (roughly 12 steps)
[c793011242d182e5f12800c12dbaf37af80be735] Merge tag 'pinctrl-v5.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

testing commit c793011242d182e5f12800c12dbaf37af80be735
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 08e48cb0d5ba83b11ae472f96f785bbfe945a3d557e70e395cc6fc01c2813e85
all runs: OK
# git bisect good c793011242d182e5f12800c12dbaf37af80be735
Bisecting: 1447 revisions left to test after this (roughly 11 steps)
[5e6a5845dd651b00754a62edec2f0a439182024d] Merge tag 'gpio-updates-for-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

testing commit 5e6a5845dd651b00754a62edec2f0a439182024d
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 598b966aa91b123c15d82156fe0cabbc0a26dd1dfd5a96c55a6f065c571f71ea
run #0: crashed: KFENCE: use-after-free in kvm_fastop_exception
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
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
# git bisect bad 5e6a5845dd651b00754a62edec2f0a439182024d
Bisecting: 721 revisions left to test after this (roughly 10 steps)
[603eefda5fcf8f9dab3ae253e677abb285f6f3bc] Merge tag 'for-linus' of git://github.com/openrisc/linux

testing commit 603eefda5fcf8f9dab3ae253e677abb285f6f3bc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 428ae4e4995f14c146b1a9cf77b4c07d12245b77dc2608bce8eb8119a9b63ca8
all runs: OK
# git bisect good 603eefda5fcf8f9dab3ae253e677abb285f6f3bc
Bisecting: 356 revisions left to test after this (roughly 9 steps)
[f7464060f7ab9a2424428008f0ee9f1e267e410f] Merge git://github.com/Paragon-Software-Group/linux-ntfs3

testing commit f7464060f7ab9a2424428008f0ee9f1e267e410f
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: fbe75b9173f5a408c745287fe447cefe3fd9c79ea24b7b43a451f66219aa5309
all runs: OK
# git bisect good f7464060f7ab9a2424428008f0ee9f1e267e410f
Bisecting: 221 revisions left to test after this (roughly 8 steps)
[58ca24158758f1784400d32743373d7d6227d018] Merge tag 'trace-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

testing commit 58ca24158758f1784400d32743373d7d6227d018
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: e38602a0687196019678eea613b91531812f34905071007b27836067a6a8b4ad
all runs: OK
# git bisect good 58ca24158758f1784400d32743373d7d6227d018
Bisecting: 110 revisions left to test after this (roughly 7 steps)
[d21fc5f077f7760bbae5742e185691718518f255] perf evsel: Separate missing feature detection from evsel__open_cpu()

testing commit d21fc5f077f7760bbae5742e185691718518f255
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 8c219514f33cf5f7e995cffb6643e798eb9f0e406da2dbcbb7423680d5a3f503
all runs: OK
# git bisect good d21fc5f077f7760bbae5742e185691718518f255
Bisecting: 55 revisions left to test after this (roughly 6 steps)
[3754707bcc3e190e5dadc978d172b61e809cb3bd] Revert "memcg: enable accounting for file lock caches"

testing commit 3754707bcc3e190e5dadc978d172b61e809cb3bd
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: bb255d30331b69e444c6a00041201b83ae3abcd7fcba1d7c95640c8243e1401a
all runs: OK
# git bisect good 3754707bcc3e190e5dadc978d172b61e809cb3bd
Bisecting: 27 revisions left to test after this (roughly 5 steps)
[3a29355a22c0275fe864100794fee58a73175d93] gpio: Add virtio-gpio driver

testing commit 3a29355a22c0275fe864100794fee58a73175d93
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 8bf5e51399d21157546f99b575beecfca58d53032beaca52f09f1284c5223aef
run #0: crashed: BUG: sleeping function called from invalid context in lock_sock_nested
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
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
# git bisect bad 3a29355a22c0275fe864100794fee58a73175d93
Bisecting: 13 revisions left to test after this (roughly 4 steps)
[8990899d84d7f46c0c1cd3f41135707b26d0eeaa] gpiolib: of: constify few local device_node variables

testing commit 8990899d84d7f46c0c1cd3f41135707b26d0eeaa
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: f912ea5044c25dc1afba1bbae9448f52dd55f106e7ef619272c6cd78a8e71f3a
all runs: OK
# git bisect good 8990899d84d7f46c0c1cd3f41135707b26d0eeaa
Bisecting: 7 revisions left to test after this (roughly 3 steps)
[5111c2b6b0194b509f47e6338c4deeeb4497bda8] gpio: dwapb: Get rid of legacy platform data

testing commit 5111c2b6b0194b509f47e6338c4deeeb4497bda8
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 4e5e627e5fc39964a51c5939e5a72017e548b86cc093cd509bf0866f09fa6ce2
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
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
# git bisect good 5111c2b6b0194b509f47e6338c4deeeb4497bda8
Bisecting: 3 revisions left to test after this (roughly 2 steps)
[dabe57c3a32d763b4b096915f8488dd9100c37e9] gpio: mlxbf2: Convert to device PM ops

testing commit dabe57c3a32d763b4b096915f8488dd9100c37e9
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: f912ea5044c25dc1afba1bbae9448f52dd55f106e7ef619272c6cd78a8e71f3a
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
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
# git bisect good dabe57c3a32d763b4b096915f8488dd9100c37e9
Bisecting: 1 revision left to test after this (roughly 1 step)
[4e6864f8563df318f1aac92f23d06210a2b3d15f] gpio: mlxbf2: Use devm_platform_ioremap_resource()

testing commit 4e6864f8563df318f1aac92f23d06210a2b3d15f
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: f912ea5044c25dc1afba1bbae9448f52dd55f106e7ef619272c6cd78a8e71f3a
run #0: basic kernel testing failed: possible deadlock in fs_reclaim_acquire
run #1: basic kernel testing failed: possible deadlock in fs_reclaim_acquire
run #2: crashed: possible deadlock in fs_reclaim_acquire
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
# git bisect bad 4e6864f8563df318f1aac92f23d06210a2b3d15f
Bisecting: 0 revisions left to test after this (roughly 0 steps)
[603607e70e3626e6ceb3ddec86e2a060c6cd6191] gpio: mlxbf2: Drop wrong use of ACPI_PTR()

testing commit 603607e70e3626e6ceb3ddec86e2a060c6cd6191
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: f912ea5044c25dc1afba1bbae9448f52dd55f106e7ef619272c6cd78a8e71f3a
run #0: basic kernel testing failed: possible deadlock in fs_reclaim_acquire
run #1: crashed: BUG: sleeping function called from invalid context in lock_sock_nested
run #2: OK
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
# git bisect bad 603607e70e3626e6ceb3ddec86e2a060c6cd6191
603607e70e3626e6ceb3ddec86e2a060c6cd6191 is the first bad commit
commit 603607e70e3626e6ceb3ddec86e2a060c6cd6191
Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Date:   Mon Aug 16 14:59:49 2021 +0300

    gpio: mlxbf2: Drop wrong use of ACPI_PTR()
    
    ACPI_PTR() is more harmful than helpful. For example, in this case
    if CONFIG_ACPI=n, the ID table left unused which is not what we want.
    
    Instead of adding ifdeffery here and there, drop ACPI_PTR() and
    replace acpi.h with mod_devicetable.h.
    
    Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
    Acked-by: Asmaa Mnehi <asmaa@nvidia.com>
    Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>

 drivers/gpio/gpio-mlxbf2.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

culprit signature: f912ea5044c25dc1afba1bbae9448f52dd55f106e7ef619272c6cd78a8e71f3a
parent  signature: f912ea5044c25dc1afba1bbae9448f52dd55f106e7ef619272c6cd78a8e71f3a
Reproducer flagged being flaky
revisions tested: 16, total time: 4h17m6.493830824s (build: 1h47m24.742584803s, test: 2h27m43.905447111s)
first bad commit: 603607e70e3626e6ceb3ddec86e2a060c6cd6191 gpio: mlxbf2: Drop wrong use of ACPI_PTR()
recipients (to): ["andriy.shevchenko@linux.intel.com" "asmaa@nvidia.com" "bgolaszewski@baylibre.com"]
recipients (cc): []
crash: BUG: sleeping function called from invalid context in lock_sock_nested
BUG: sleeping function called from invalid context at net/core/sock.c:3100
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 10306, name: syz-executor.3
1 lock held by syz-executor.3/10306:
 #0: ffffffff8c40af80 (hci_sk_list.lock){++++}-{2:2}, at: hci_sock_dev_event+0x374/0x5c0 net/bluetooth/hci_sock.c:763
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 0 PID: 10306 Comm: syz-executor.3 Not tainted 5.14.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x57/0x7d lib/dump_stack.c:105
 ___might_sleep.cold+0x1f1/0x237 kernel/sched/core.c:9154
 lock_sock_nested+0x1e/0xf0 net/core/sock.c:3100
 lock_sock include/net/sock.h:1610 [inline]
 hci_sock_dev_event+0x3ea/0x5c0 net/bluetooth/hci_sock.c:765
 hci_unregister_dev+0x29b/0xfb0 net/bluetooth/hci_core.c:4033
 vhci_release+0x62/0xd0 drivers/bluetooth/hci_vhci.c:340
 __fput+0x209/0x870 fs/file_table.c:280
 task_work_run+0xc0/0x160 kernel/task_work.c:164
 exit_task_work include/linux/task_work.h:32 [inline]
 do_exit+0x9fe/0x24e0 kernel/exit.c:825
 do_group_exit+0xe7/0x290 kernel/exit.c:922
 get_signal+0x3b2/0x1c80 kernel/signal.c:2808
 arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:865
 handle_signal_work kernel/entry/common.c:148 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
 exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:209
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x41940b
Code: Unable to access opcode bytes at RIP 0x4193e1.
RSP: 002b:00007ffc7ed2d6e0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 000000000041940b
RDX: 00000000005708b0 RSI: 0000000000000001 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b33920118
R10: 00007ffc7ed2d7d0 R11: 0000000000000293 R12: 0000000000013e25
R13: 00000000000003e8 R14: 000000000056bf80 R15: 0000000000013c31

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