bisecting cause commit starting from 35392da51b1ab7ba0c63de0a553e2a93c2314266
building syzkaller on be531bb42381b245eed805e49fd889d1c2118c76
testing commit 35392da51b1ab7ba0c63de0a553e2a93c2314266
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: c977fe7eac68cdd0bda32bab0bf210655a39fef1f00cc37e2ac45e4c4070136e
all runs: crashed: possible deadlock in sch_direct_xmit
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: 836d1ba0693bb05668a15eadc4e121d3411fd2de1d5a1d53ebf89379cea0ad68
all runs: crashed: possible deadlock in sch_direct_xmit
testing release v5.13
testing commit 62fb9874f5da54fdb243003b386128037319b219
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 7d990a6930244c1a0f6fe089eb262673495ef144df42cca789a37ab3b235ed03
all runs: crashed: possible deadlock in sch_direct_xmit
testing release v5.12
testing commit 9f4ad9e425a1d3b6a34617b8ea226d56a119a717
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: d15c232baf4eaf932118de885cb9d080778facfa64cbc13a90b07d14e9a6a9a5
all runs: crashed: possible deadlock in sch_direct_xmit
testing release v5.11
testing commit f40ddce88593482919761f74910f42f4b84c004b
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 85df232aa498d8c9bd658816bd421b314fd2fc41ebb1bebb6fc3748486e36f1f
all runs: crashed: possible deadlock in sch_direct_xmit
testing release v5.10
testing commit 2c85ebc57b3e1817b6ce1a6b703928e113a90442
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 143313765c513b3fa00ba737af1aca84d5b6623aaa5ea93341fa8e13f9a4fdc2
all runs: crashed: possible deadlock in sch_direct_xmit
testing release v5.9
testing commit bbf5c979011a099af5dc76498918ed7df445635b
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 95683c3f4845cfe4505f373b2c918c9a8fa246b6c7cf277d281db0b4cd07a057
all runs: crashed: possible deadlock in sch_direct_xmit
testing release v5.8
testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c
compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 0d7b975c5a2e26dcb4c9b7c60dacd1bdce8c70afbf96456b7702758a4ecd4530
all runs: crashed: possible deadlock in sch_direct_xmit
testing release v5.7
testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162
compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: b59dbca75ffea477f571ffd37526ee93f56f9679888ba529950b13a40e979d6f
all runs: OK
# git bisect start bcf876870b95592b52519ed4aafcf9d95999bc9c 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162
Bisecting: 8752 revisions left to test after this (roughly 13 steps)
[694b5a5d313f3997764b67d52bab66ec7e59e714] Merge tag 'arm-soc-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

testing commit 694b5a5d313f3997764b67d52bab66ec7e59e714
compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 20ed55e59788ceef3a0c1a4bd57d67f33e1b1f5b3c3552880630c1fcc2df906e
all runs: crashed: possible deadlock in sch_direct_xmit
# git bisect bad 694b5a5d313f3997764b67d52bab66ec7e59e714
Bisecting: 4417 revisions left to test after this (roughly 12 steps)
[2e63f6ce7ed2c4ff83ba30ad9ccad422289a6c63] Merge branch 'uaccess.comedi' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

testing commit 2e63f6ce7ed2c4ff83ba30ad9ccad422289a6c63
compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 2915c63c769e9aa7261d8b815bb2c1f4c501c19f142c4ad97a4e21dafe772587
all runs: OK
# git bisect good 2e63f6ce7ed2c4ff83ba30ad9ccad422289a6c63
Bisecting: 2209 revisions left to test after this (roughly 11 steps)
[ae920e83a079bc0ed883d6b709f8f6433ce86745] Merge branch 'remove-kernel_getsockopt'

testing commit ae920e83a079bc0ed883d6b709f8f6433ce86745
compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 313f7947f77c5c89c48523f9862845e57c1a09b2087e517e82857c5111c78b66
all runs: crashed: possible deadlock in sch_direct_xmit
# git bisect bad ae920e83a079bc0ed883d6b709f8f6433ce86745
Bisecting: 1094 revisions left to test after this (roughly 10 steps)
[5d9e4722c74e8868d5fe2f8749de80928eb4a1d1] Merge tag 'wireless-drivers-next-2020-05-07' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next

testing commit 5d9e4722c74e8868d5fe2f8749de80928eb4a1d1
compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 7fef000165b08b540b882fe085d780e221f6423cdf61b8a76451e7494956e8f0
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM)
# git bisect skip 5d9e4722c74e8868d5fe2f8749de80928eb4a1d1
Bisecting: 1094 revisions left to test after this (roughly 10 steps)
[71e9378bcfd2e9dd96c2bfbef23f3562946d30b3] iwlwifi: mvm: initialize iwl_dev_tx_power_cmd to zero

testing commit 71e9378bcfd2e9dd96c2bfbef23f3562946d30b3
compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 69cc7d715718c24c706558235d4852888d5cb754c13a3c21c47a89b69a097452
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM)
# git bisect skip 71e9378bcfd2e9dd96c2bfbef23f3562946d30b3
Bisecting: 1094 revisions left to test after this (roughly 10 steps)
[931ca7ab7fe804d77bc6952f1512950c0d870f26] ip*_mc_gsfget(): lift copyout of struct group_filter into callers

testing commit 931ca7ab7fe804d77bc6952f1512950c0d870f26
compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 391440759700d5bea4a2053a9a5d1769bb508b3a9fb6f12a4d8cae1c64fa0603
all runs: crashed: possible deadlock in sch_direct_xmit
# git bisect bad 931ca7ab7fe804d77bc6952f1512950c0d870f26
Bisecting: 799 revisions left to test after this (roughly 10 steps)
[367ec3e4834cbd611401c2c40a23c22c825474f1] bpf: Create file bpf iterator

testing commit 367ec3e4834cbd611401c2c40a23c22c825474f1
compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 899f95af68a94a748f0eaf7b3edd86d32e50df05f8d9120d399ebc2c1d48ef70
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM)
# git bisect skip 367ec3e4834cbd611401c2c40a23c22c825474f1
Bisecting: 799 revisions left to test after this (roughly 10 steps)
[4dadd151b26589fd0520feb97c93ee981b393a99] net/smc: enqueue local LLC messages

testing commit 4dadd151b26589fd0520feb97c93ee981b393a99
compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 0d48e1eb4dc1dc3a2d5a58d784debe79d2d2e880ce86a5e572433aadb6c6d5c4
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM)
# git bisect skip 4dadd151b26589fd0520feb97c93ee981b393a99
Bisecting: 799 revisions left to test after this (roughly 10 steps)
[6cd35888a0db4b18a5796fe5d5863f004f8eef0f] Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next

testing commit 6cd35888a0db4b18a5796fe5d5863f004f8eef0f
compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: aeecf5ae146a8c6ecb5e3ba885c246744d807fb30315493f0a69d3b7b40bdbc9
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM)
# git bisect skip 6cd35888a0db4b18a5796fe5d5863f004f8eef0f
Bisecting: 799 revisions left to test after this (roughly 10 steps)
[6e7e034e88e8e22cb14765c86da92416017e45b8] tools, bpftool: Poison and replace kernel integer typedefs

testing commit 6e7e034e88e8e22cb14765c86da92416017e45b8
compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 925dc3aeda331121ee87629546e0607db3cc2e050f209d49965771851a043360
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM)
# git bisect skip 6e7e034e88e8e22cb14765c86da92416017e45b8
Bisecting: 799 revisions left to test after this (roughly 10 steps)
[e7f304607778e31bfd8e6b00ce2a8f990b265e14] kselftest: run tests by fixture

testing commit e7f304607778e31bfd8e6b00ce2a8f990b265e14
compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: fef55b0aa540a8dfbb8842acd821db458f670543be8bbc6571d78a71c705ef65
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM)
# git bisect skip e7f304607778e31bfd8e6b00ce2a8f990b265e14
Bisecting: 799 revisions left to test after this (roughly 10 steps)
[8ae2473842bdbb95bfb451b130dad6a650b3ad1b] bnxt_en: Add support for L2 doorbell size.

testing commit 8ae2473842bdbb95bfb451b130dad6a650b3ad1b
compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 0d48e1eb4dc1dc3a2d5a58d784debe79d2d2e880ce86a5e572433aadb6c6d5c4
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM)
# git bisect skip 8ae2473842bdbb95bfb451b130dad6a650b3ad1b
Bisecting: 799 revisions left to test after this (roughly 10 steps)
[9a9891fbdf935c270388fca856c117ad71c02458] docs: networking: convert cxacru.txt to ReST

testing commit 9a9891fbdf935c270388fca856c117ad71c02458
compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: fef55b0aa540a8dfbb8842acd821db458f670543be8bbc6571d78a71c705ef65
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM)
# git bisect skip 9a9891fbdf935c270388fca856c117ad71c02458
Bisecting: 799 revisions left to test after this (roughly 10 steps)
[bc54ac3609aa0361dfeb15758b7bacf3637f6d4a] r8169: use new helper eth_hw_addr_crc

testing commit bc54ac3609aa0361dfeb15758b7bacf3637f6d4a
compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: e028f9044ebac739d148672f7600947b886e63eab6c7818442594e829b0cb804
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM)
# git bisect skip bc54ac3609aa0361dfeb15758b7bacf3637f6d4a
Bisecting: 799 revisions left to test after this (roughly 10 steps)
[19093313cb0486d568232934bb80dd422d891623] docs: networking: convert ipv6.txt to ReST

testing commit 19093313cb0486d568232934bb80dd422d891623
compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: fef55b0aa540a8dfbb8842acd821db458f670543be8bbc6571d78a71c705ef65
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM)
# git bisect skip 19093313cb0486d568232934bb80dd422d891623
Bisecting: 799 revisions left to test after this (roughly 10 steps)
[b286a0651e4404ab96cdfdcdad8a839a26b3751e] net/smc: handle incoming CDC validation message

testing commit b286a0651e4404ab96cdfdcdad8a839a26b3751e
compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: a68546a253d3ef1df9bff93b81b31d08cb0754b63075e711f348e22be80c9764
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM)
# git bisect skip b286a0651e4404ab96cdfdcdad8a839a26b3751e
Bisecting: 799 revisions left to test after this (roughly 10 steps)
[ac02a451a6148bb9c395b39783ce7299eddf4f31] net: dsa: sja1105: implement cross-chip bridging operations

testing commit ac02a451a6148bb9c395b39783ce7299eddf4f31
compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: bec27967e28ce0d2e9059f09d5615284c769eb55864607be6c4abeb22ded2c72
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM)
# git bisect skip ac02a451a6148bb9c395b39783ce7299eddf4f31
Bisecting: 799 revisions left to test after this (roughly 10 steps)
[ac51d99bf81caac8d8881fe52098948110d0de68] bpf: Create anonymous bpf iterator

testing commit ac51d99bf81caac8d8881fe52098948110d0de68
compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 515bd16cb65ae22b5d44a74185f4e3d7505e7ef277e1d9ff8efe27517403876e
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM)
# git bisect skip ac51d99bf81caac8d8881fe52098948110d0de68
Bisecting: 799 revisions left to test after this (roughly 10 steps)
[4f6cd04f2ded199931c44b3c95c4938618cd8b82] dsa: sja1105: fix semicolon.cocci warnings

testing commit 4f6cd04f2ded199931c44b3c95c4938618cd8b82
compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 1636cc6fa3e6e6d6320936640ab64ec768b020e14a92083d6326df6c81303942
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM)
# git bisect skip 4f6cd04f2ded199931c44b3c95c4938618cd8b82
Bisecting: 799 revisions left to test after this (roughly 10 steps)
[3ee7b7cd83900bb711efadbf16fa096a615a1566] Bluetooth: Add BT_MODE socket option

testing commit 3ee7b7cd83900bb711efadbf16fa096a615a1566
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 1e309cb1f9a9828bbe9d4c4ebf34f07237e0171fafee45e80df02e04d4f2eb2d
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM)
# git bisect skip 3ee7b7cd83900bb711efadbf16fa096a615a1566
Bisecting: 799 revisions left to test after this (roughly 10 steps)
[ab1e0ce99d3dabc57e5a383b3ffc60fb97aafe9e] net/mlx5e: kTLS, Fill work queue edge separately in TX flow

testing commit ab1e0ce99d3dabc57e5a383b3ffc60fb97aafe9e
compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 1636cc6fa3e6e6d6320936640ab64ec768b020e14a92083d6326df6c81303942
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM)
# git bisect skip ab1e0ce99d3dabc57e5a383b3ffc60fb97aafe9e
Bisecting: 799 revisions left to test after this (roughly 10 steps)
[d2a3f5f4635b7b0df8d4cd04ee0c75886ef699b9] Bluetooth: Add HCI device identifier for VIRTIO devices

testing commit d2a3f5f4635b7b0df8d4cd04ee0c75886ef699b9
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: c82707c930d85ab28173df4f7b62a68fd10f52915b6b0138778c8a08e2115f0f
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM)
# git bisect skip d2a3f5f4635b7b0df8d4cd04ee0c75886ef699b9
Bisecting: 799 revisions left to test after this (roughly 10 steps)
[ec9cdca0663a543ede2072ff091beec1787e3374] net/mlx5e: Unify reserving space for WQEs

testing commit ec9cdca0663a543ede2072ff091beec1787e3374
compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 70670eb0f47d1c36e269aa8689ab54ea9f116cb5942301c87987ec50dbf4ba7c
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM)
# git bisect skip ec9cdca0663a543ede2072ff091beec1787e3374
Bisecting: 799 revisions left to test after this (roughly 10 steps)
[c6f5f242f5ed58cc531e75507e8447a8c9b6cd30] net: phy: mdio-bcm-iproc: Do not show kernel pointer

testing commit c6f5f242f5ed58cc531e75507e8447a8c9b6cd30
compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 0503a946e584cfc690accc00def252a824884ddd53b86bc24c93582ce181be70
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM)
# git bisect skip c6f5f242f5ed58cc531e75507e8447a8c9b6cd30
Bisecting: 799 revisions left to test after this (roughly 10 steps)
[14366da6b59203ef5fc3cf21660113b60c2f1421] mlxsw: spectrum_span: Wrap buffer change in a function

testing commit 14366da6b59203ef5fc3cf21660113b60c2f1421
compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 3d0285223c68c5e819c28b6b575afc05c0e231e52bd6ee62e6423657218e3c99
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM)
# git bisect skip 14366da6b59203ef5fc3cf21660113b60c2f1421
Bisecting: 799 revisions left to test after this (roughly 10 steps)
[c13a83b01010c94ad7fe68161fd4dae3767d3ffe] rtlwifi: rtl8192ee: use true,false for bool variables

revisions tested: 34, total time: 8h16m4.504102062s (build: 3h28m47.200594723s, test: 4h43m36.857197239s)
error: bisection is taking too long (>8h0m0s), aborting