bisecting cause commit starting from b36c969764ab12faebb74711c942fa3e6eaf1e96
building syzkaller on d5a3ae1f760e7cb2cd5a721d9645ae22eae114fe
testing commit b36c969764ab12faebb74711c942fa3e6eaf1e96 with gcc (GCC) 8.1.0
kernel signature: f2aaccdb4545be3ae634750aed6c1a16a5753be80fc07ae4110ccdcbc36187db
run #0: crashed: INFO: task hung in do_proc_bulk
run #1: crashed: INFO: task hung in do_proc_bulk
run #2: crashed: INFO: task can't die in usb_start_wait_urb
run #3: crashed: INFO: task can't die in usb_start_wait_urb
run #4: crashed: INFO: task can't die in usb_start_wait_urb
run #5: crashed: INFO: task can't die in usb_start_wait_urb
run #6: OK
run #7: OK
run #8: OK
run #9: OK
testing release v5.8
testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c with gcc (GCC) 8.1.0
kernel signature: 742f3a22c9bd57e3c778c9a3164f5016bd4227e6838b29347ca51b7b205f1f67
run #0: crashed: INFO: task hung in proc_bulk
run #1: crashed: INFO: task hung in proc_bulk
run #2: crashed: INFO: task hung in proc_bulk
run #3: crashed: INFO: task hung in proc_bulk
run #4: crashed: INFO: task hung in proc_bulk
run #5: crashed: INFO: task hung in proc_bulk
run #6: OK
run #7: OK
run #8: OK
run #9: OK
testing release v5.7
testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 with gcc (GCC) 8.1.0
kernel signature: c6e88c842c27576468dd526203b1256015df44342e971a0c8c4b9859fa3b77c9
all runs: crashed: INFO: task hung in proc_bulk
testing release v5.6
testing commit 7111951b8d4973bda27ff663f2cf18b663d15b48 with gcc (GCC) 8.1.0
kernel signature: 25e1ddde157c1b0cc81698de93dbbbaeea9d9de469c8b2e13716abb0edb205b3
all runs: crashed: INFO: task hung in proc_bulk
testing release v5.5
testing commit d5226fa6dbae0569ee43ecfc08bdcd6770fc4755 with gcc (GCC) 8.1.0
kernel signature: 0857129e54ff46c9af9f54a26d5c5feeb68100b2301b3a65b52ebb43285a09b6
run #0: crashed: INFO: task hung in proc_bulk
run #1: crashed: INFO: task hung in proc_bulk
run #2: crashed: INFO: task hung in proc_bulk
run #3: crashed: INFO: task hung in proc_bulk
run #4: crashed: INFO: task hung in proc_bulk
run #5: crashed: INFO: task hung in proc_bulk
run #6: crashed: INFO: task hung in proc_bulk
run #7: OK
run #8: OK
run #9: OK
testing release v5.4
testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 with gcc (GCC) 8.1.0
kernel signature: c90b693cdc81cc7a5cc3dbeae3f4cdbb19984d4a3aaa2dc62bf3a0b0e4cc4905
run #0: crashed: INFO: task hung in proc_bulk
run #1: crashed: INFO: task hung in proc_bulk
run #2: crashed: INFO: task hung in proc_bulk
run #3: crashed: INFO: task hung in proc_bulk
run #4: crashed: INFO: task hung in proc_bulk
run #5: crashed: INFO: task hung in proc_bulk
run #6: crashed: INFO: task hung in proc_bulk
run #7: OK
run #8: OK
run #9: OK
testing release v5.3
testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 with gcc (GCC) 8.1.0
kernel signature: cd1425f586418947159382f15e0f38d97c7dee5042023d57a5b0fc6c44a60050
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
run #2: crashed: INFO: task hung in usb_bulk_msg
run #3: crashed: INFO: task hung in usb_bulk_msg
run #4: crashed: INFO: task hung in usb_bulk_msg
run #5: crashed: INFO: task hung in usb_bulk_msg
run #6: crashed: INFO: task hung in usb_bulk_msg
run #7: crashed: INFO: task hung in usb_bulk_msg
run #8: crashed: INFO: task hung in usb_bulk_msg
run #9: OK
testing release v5.2
testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 with gcc (GCC) 8.1.0
kernel signature: 38cd33c593f17e41e40dd30396a0a4cc68343bd3f00eade307ec7f9de98315c6
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
run #2: crashed: INFO: task hung in usb_bulk_msg
run #3: crashed: INFO: task hung in usb_bulk_msg
run #4: crashed: INFO: task hung in usb_bulk_msg
run #5: crashed: INFO: task hung in usb_bulk_msg
run #6: OK
run #7: OK
run #8: OK
run #9: OK
testing release v5.1
testing commit e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd with gcc (GCC) 8.1.0
kernel signature: 63a504c59cd2c0a70be85786b2441519bd76acf3980680a754e169d3e0efe74c
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
run #2: crashed: INFO: task hung in usb_bulk_msg
run #3: crashed: INFO: task hung in usb_bulk_msg
run #4: crashed: INFO: task hung in usb_bulk_msg
run #5: crashed: INFO: task hung in usb_bulk_msg
run #6: crashed: INFO: task hung in usb_bulk_msg
run #7: OK
run #8: OK
run #9: OK
testing release v5.0
testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 with gcc (GCC) 8.1.0
kernel signature: 4e62a0d14ee01c2cd1ed635923b00f8e9519af40e2a0923d3b51aa2dacc6af1a
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
run #2: crashed: INFO: task hung in usb_bulk_msg
run #3: crashed: INFO: task hung in usb_bulk_msg
run #4: crashed: INFO: task hung in usb_bulk_msg
run #5: crashed: INFO: task hung in usb_bulk_msg
run #6: OK
run #7: OK
run #8: OK
run #9: OK
testing release v4.20
testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be with gcc (GCC) 8.1.0
kernel signature: c2fe3812b50f148e8453d3a2301ce0ef2d3cc24fa01c19ca73f3ef736adf4dbc
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
run #2: crashed: INFO: task hung in usb_bulk_msg
run #3: crashed: INFO: task hung in usb_bulk_msg
run #4: crashed: INFO: task hung in usb_bulk_msg
run #5: crashed: INFO: task hung in usb_bulk_msg
run #6: OK
run #7: OK
run #8: OK
run #9: OK
testing release v4.19
testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d with gcc (GCC) 8.1.0
kernel signature: 663d98759a5fbd04b6ba1b1c5644d417ad4484de3871d3ea2f02dd4589805ec6
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
run #2: crashed: INFO: task hung in usb_bulk_msg
run #3: crashed: INFO: task hung in usb_bulk_msg
run #4: crashed: INFO: task hung in usb_bulk_msg
run #5: crashed: INFO: task hung in usb_bulk_msg
run #6: crashed: INFO: task hung in usb_bulk_msg
run #7: crashed: INFO: task hung in usb_bulk_msg
run #8: OK
run #9: OK
testing release v4.18
testing commit 94710cac0ef4ee177a63b5227664b38c95bbf703 with gcc (GCC) 8.1.0
kernel signature: 3cd4b68efb887ea3ebc45a81b67feeaf0a96a1b08edd595a0911035a5ef2fc25
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
run #2: crashed: INFO: task hung in usb_bulk_msg
run #3: crashed: INFO: task hung in usb_bulk_msg
run #4: crashed: INFO: task hung in usb_bulk_msg
run #5: crashed: INFO: task hung in usb_bulk_msg
run #6: crashed: INFO: task hung in usb_bulk_msg
run #7: crashed: INFO: task hung in usb_bulk_msg
run #8: OK
run #9: OK
testing release v4.17
testing commit 29dcea88779c856c7dc92040a0c01233263101d4 with gcc (GCC) 8.1.0
kernel signature: 075eee32b439c345ed2f37eb02b2966dc9fe94b8da8c95928018648e5ab1fa4d
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
run #2: crashed: INFO: task hung in usb_bulk_msg
run #3: crashed: INFO: task hung in usb_bulk_msg
run #4: crashed: INFO: task hung in usb_bulk_msg
run #5: crashed: INFO: task hung in usb_bulk_msg
run #6: crashed: INFO: task hung in usb_bulk_msg
run #7: crashed: INFO: task hung in usb_bulk_msg
run #8: OK
run #9: OK
testing release v4.16
testing commit 0adb32858b0bddf4ada5f364a84ed60b196dbcda with gcc (GCC) 8.1.0
kernel signature: d6b44414213665b7b80327ec2d70dc8a5a121b06e5033b9922f3196d63eed719
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
run #2: crashed: INFO: task hung in usb_bulk_msg
run #3: crashed: INFO: task hung in usb_bulk_msg
run #4: crashed: INFO: task hung in usb_bulk_msg
run #5: crashed: INFO: task hung in usb_bulk_msg
run #6: crashed: INFO: task hung in usb_bulk_msg
run #7: OK
run #8: OK
run #9: OK
testing release v4.15
testing commit d8a5b80568a9cb66810e75b182018e9edb68e8ff with gcc (GCC) 8.1.0
kernel signature: 96dc2e526831bb519e8d6e43a39d46b3adabf83c10e07664f5cc9c246d043951
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
run #2: crashed: INFO: task hung in usb_bulk_msg
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
testing release v4.14
testing commit bebc6082da0a9f5d47a1ea2edc099bf671058bd4 with gcc (GCC) 8.1.0
kernel signature: cbe0034eea77a8173b2dd820ed1d70e5a7fb0506090b63c60d2de7bc0366793f
all runs: OK
# git bisect start d8a5b80568a9cb66810e75b182018e9edb68e8ff bebc6082da0a9f5d47a1ea2edc099bf671058bd4
Bisecting: 8497 revisions left to test after this (roughly 13 steps)
[5d352e69c60e54b5f04d6e337a1d2bf0dbf3d94a] Merge tag 'media/v4.15-1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
testing commit 5d352e69c60e54b5f04d6e337a1d2bf0dbf3d94a with gcc (GCC) 8.1.0
kernel signature: bb187e7f3ca26364cd5e1a7e900b0967c51cb9db4002ee0dd0a9ec21ef055d07
all runs: OK
# git bisect good 5d352e69c60e54b5f04d6e337a1d2bf0dbf3d94a
Bisecting: 3900 revisions left to test after this (roughly 12 steps)
[f6705bf959efac87bca76d40050d342f1d212587] Merge tag 'drm-for-v4.15-amd-dc' of git://people.freedesktop.org/~airlied/linux
testing commit f6705bf959efac87bca76d40050d342f1d212587 with gcc (GCC) 8.1.0
kernel signature: fed8b9ebb0b8b36a3d84deb2c3b2b26e40419d149243e33abe03f179e7161606
all runs: OK
# git bisect good f6705bf959efac87bca76d40050d342f1d212587
Bisecting: 1936 revisions left to test after this (roughly 11 steps)
[4066aa72f9f2886105c6f747d7f9bd4f14f53c12] Merge tag 'drm-fixes-for-v4.15-rc3' of git://people.freedesktop.org/~airlied/linux
testing commit 4066aa72f9f2886105c6f747d7f9bd4f14f53c12 with gcc (GCC) 8.1.0
kernel signature: 9ea646389d601dd42a5fed7456704110c754cf79b005faa017ca8a748207caf6
all runs: OK
# git bisect good 4066aa72f9f2886105c6f747d7f9bd4f14f53c12
Bisecting: 983 revisions left to test after this (roughly 10 steps)
[fd84b751ddb7dab7a8c22826e7bff85f3ff3f9a6] Merge tag 'drm-fixes-for-v4.15-rc6' of git://people.freedesktop.org/~airlied/linux
testing commit fd84b751ddb7dab7a8c22826e7bff85f3ff3f9a6 with gcc (GCC) 8.1.0
kernel signature: f6d56093b2bffb4eac74d994947b7fc103d026fad9f385c52161c7f54c2e6834
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
run #2: crashed: INFO: task hung in usb_bulk_msg
run #3: crashed: INFO: task hung in usb_bulk_msg
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
# git bisect bad fd84b751ddb7dab7a8c22826e7bff85f3ff3f9a6
Bisecting: 433 revisions left to test after this (roughly 9 steps)
[7a3c296ae08f9b51e399074d8ef6867d65fbd22b] Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
testing commit 7a3c296ae08f9b51e399074d8ef6867d65fbd22b with gcc (GCC) 8.1.0
net/wireless/shipped-certs.c:92:10: error: redefinition of 'shipped_regdb_certs'
net/wireless/shipped-certs.c:774:14: error: redefinition of 'shipped_regdb_certs_len'
# git bisect skip 7a3c296ae08f9b51e399074d8ef6867d65fbd22b
Bisecting: 433 revisions left to test after this (roughly 9 steps)
[37e92a9d4fe38dc3e7308913575983a6a088c8d4] net/mlx5: Fix rate limit packet pacing naming and struct
testing commit 37e92a9d4fe38dc3e7308913575983a6a088c8d4 with gcc (GCC) 8.1.0
kernel signature: 70188eb64be2608cf1e01fa1ff14fe368600a922cc804a308b44cbef4ed32ce7
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
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 bad 37e92a9d4fe38dc3e7308913575983a6a088c8d4
Bisecting: 291 revisions left to test after this (roughly 8 steps)
[4e746cf4f721d6397bace501f5feadb46eec1314] Merge tag 'riscv-for-linus-4.15-rc4-riscv_fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/linux
testing commit 4e746cf4f721d6397bace501f5feadb46eec1314 with gcc (GCC) 8.1.0
kernel signature: 91f8503f428a82bd45f7ab719f7e3df8186328df60aa47f83c70b1c58b2caa04
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
run #2: crashed: INFO: task hung in usb_bulk_msg
run #3: crashed: INFO: task hung in usb_bulk_msg
run #4: crashed: INFO: task hung in usb_bulk_msg
run #5: crashed: INFO: task hung in usb_bulk_msg
run #6: OK
run #7: OK
run #8: OK
run #9: OK
# git bisect bad 4e746cf4f721d6397bace501f5feadb46eec1314
Bisecting: 140 revisions left to test after this (roughly 7 steps)
[4ded3bec65a07343258ed8fd9d46483f032d866f] Merge tag 'keys-fixes-20171208' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs into keys-for-linus
testing commit 4ded3bec65a07343258ed8fd9d46483f032d866f with gcc (GCC) 8.1.0
kernel signature: 7f54ee932246656e4c48b460bbe973c1f8514f01eaf2db38cdb011ded4820d99
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
run #2: crashed: INFO: task hung in usb_bulk_msg
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
# git bisect bad 4ded3bec65a07343258ed8fd9d46483f032d866f
Bisecting: 76 revisions left to test after this (roughly 6 steps)
[03afb6e43aaf71e761c1e22d36c2670ef82f089a] Merge tag 'wireless-drivers-for-davem-2017-12-08' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers
testing commit 03afb6e43aaf71e761c1e22d36c2670ef82f089a with gcc (GCC) 8.1.0
kernel signature: 3fb1926749fb8220b3d736b0d7db34636b2b735f1d7c4d58b22fa81bedce29f3
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
run #2: crashed: INFO: task hung in usb_bulk_msg
run #3: crashed: INFO: task hung in usb_bulk_msg
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
# git bisect bad 03afb6e43aaf71e761c1e22d36c2670ef82f089a
Bisecting: 36 revisions left to test after this (roughly 5 steps)
[a4abd7a80addb4a9547f7dfc7812566b60ec505c] usbnet: fix alignment for frames with no ethernet header
testing commit a4abd7a80addb4a9547f7dfc7812566b60ec505c with gcc (GCC) 8.1.0
kernel signature: cf5c2b6d0e119bf2d02dc06e0c206945d57eea544f689dee83faddb80db6664a
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
run #2: crashed: INFO: task hung in usb_bulk_msg
run #3: crashed: INFO: task hung in usb_bulk_msg
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
# git bisect bad a4abd7a80addb4a9547f7dfc7812566b60ec505c
Bisecting: 16 revisions left to test after this (roughly 4 steps)
[69c64866ce072dea1d1e59a0d61e0f66c0dffb76] dccp: CVE-2017-8824: use-after-free in DCCP code
testing commit 69c64866ce072dea1d1e59a0d61e0f66c0dffb76 with gcc (GCC) 8.1.0
kernel signature: 92fc9228ad066d4a3a4e55c720c43c8cab5f19953ae336c6f42405d07eafdd84
all runs: OK
# git bisect good 69c64866ce072dea1d1e59a0d61e0f66c0dffb76
Bisecting: 8 revisions left to test after this (roughly 3 steps)
[30f1e59550363f6be28213393407ef225150e7fe] drivers: net: dsa: remove duplicate includes
testing commit 30f1e59550363f6be28213393407ef225150e7fe with gcc (GCC) 8.1.0
kernel signature: 39c33c42f6f4df28b03ad9dee83904e8d13cd0494102268657fb9316fdede1a5
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
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 bad 30f1e59550363f6be28213393407ef225150e7fe
Bisecting: 3 revisions left to test after this (roughly 2 steps)
[134059fd2775be79e26c2dff87d25cc2f6ea5626] net: thunderx: Fix TCP/UDP checksum offload for IPv4 pkts
testing commit 134059fd2775be79e26c2dff87d25cc2f6ea5626 with gcc (GCC) 8.1.0
kernel signature: d348316d9e875dfc4de32c56b814b490236e748bd57db7dc108e99a6ae86c569
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
run #2: crashed: INFO: task hung in usb_bulk_msg
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
# git bisect bad 134059fd2775be79e26c2dff87d25cc2f6ea5626
Bisecting: 1 revision left to test after this (roughly 1 step)
[016a266bdfeda268afb2228b6217fd4771334635] socketpair(): allocate descriptors first
testing commit 016a266bdfeda268afb2228b6217fd4771334635 with gcc (GCC) 8.1.0
kernel signature: 3f596c20af0427c1722cb1ceef232e23a694609b7a7139a00ecabd013121cdaa
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
run #2: crashed: INFO: task hung in usb_bulk_msg
run #3: crashed: INFO: task hung in usb_bulk_msg
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
# git bisect bad 016a266bdfeda268afb2228b6217fd4771334635
Bisecting: 0 revisions left to test after this (roughly 0 steps)
[a5739435b5a3b8c449f8844ecd71a3b1e89f0a33] fix kcm_clone()
revisions tested: 31, total time: 8h15m14.675325499s (build: 2h52m33.852972642s, test: 5h19m13.890342283s)
error: bisection is taking too long (>8h0m0s), aborting