bisecting cause commit starting from f69d02e37a85645aa90d18cacfff36dba370f797
building syzkaller on d7e4e6046884630f013a35de0d7d8a4e780aa6cc
testing commit f69d02e37a85645aa90d18cacfff36dba370f797 with gcc (GCC) 10.2.1 20210217
kernel signature: c936c85782c155009974884167dbd45e59679a6951c828da30e056fd915b0173
all runs: crashed: SYZFAIL: tun read failed
testing release v5.11
testing commit f40ddce88593482919761f74910f42f4b84c004b with gcc (GCC) 10.2.1 20210217
kernel signature: ea11f56c35a1a3e853be63cddb1727a421fe65cdf540a807397797e7292237fd
all runs: crashed: SYZFAIL: tun read failed
testing release v5.10
testing commit 2c85ebc57b3e1817b6ce1a6b703928e113a90442 with gcc (GCC) 10.2.1 20210217
kernel signature: e6dccdb94c15dbd7c20ad80f88c76ade0f661558f9fff3f3f399cdf892d60087
all runs: crashed: SYZFAIL: tun read failed
testing release v5.9
testing commit bbf5c979011a099af5dc76498918ed7df445635b with gcc (GCC) 10.2.1 20210217
kernel signature: dfd642dd689bf57d898c503083b19e0987a6d3cb0294fb073d1759cf5d1172ef
all runs: crashed: SYZFAIL: tun read failed
testing release v5.8
testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c with gcc (GCC) 8.4.1 20210217
kernel signature: 2b403c8fa28d686affff27c45536ddf088374459216b33ed91f37eeee8d1c13e
all runs: crashed: SYZFAIL: tun read failed
testing release v5.7
testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 with gcc (GCC) 8.4.1 20210217
kernel signature: c4cc4fc74c3bd2e63722e03e4750e2a8e5759dacd8f31c3bd8eae08ff3313727
all runs: crashed: SYZFAIL: tun read failed
testing release v5.6
testing commit 7111951b8d4973bda27ff663f2cf18b663d15b48 with gcc (GCC) 8.4.1 20210217
kernel signature: 0371078942c4d1ca8f9745543154e02e17507b6e7931aa160af6a2255e3d613a
all runs: crashed: SYZFAIL: tun read failed
testing release v5.5
testing commit d5226fa6dbae0569ee43ecfc08bdcd6770fc4755 with gcc (GCC) 8.4.1 20210217
kernel signature: b0ea2815604edfe96c163a880bc455ec14554c5d03894a2f5cdc90f7be918c9e
all runs: crashed: SYZFAIL: tun read failed
testing release v5.4
testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 with gcc (GCC) 8.4.1 20210217
kernel signature: 46845533c89b480de197b38ee1368cfad0a1a7727adb36cea72b3928a0a7eb62
all runs: crashed: SYZFAIL: tun read failed
testing release v5.3
testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 with gcc (GCC) 8.4.1 20210217
kernel signature: 2bae8eedb51543d9db8b2686cfbe3c2d8fc5c964c980b3037c38d866ec7c507e
all runs: boot failed: BUG: spinlock bad magic in nf_connlabels_get
testing release v5.2
testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 with gcc (GCC) 8.4.1 20210217
kernel signature: 65aa920d7fa44d6db203d8d72561e09ea46c06c2839d030a38ba63a65ab31ebd
all runs: boot failed: can't ssh into the instance
testing release v5.1
testing commit e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd with gcc (GCC) 8.4.1 20210217
kernel signature: a4ce4d3499ebc66d02e248dbe3ae0ae0a63f9ad629dcd264dbf13928495fb819
all runs: boot failed: can't ssh into the instance
testing release v5.0
testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 with gcc (GCC) 8.4.1 20210217
kernel signature: 81bda85ee6181cef9c0146716f369eac04c78f9d72b113ab9f294bbba2f632d3
all runs: boot failed: can't ssh into the instance
testing release v4.20
testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be with gcc (GCC) 8.4.1 20210217
kernel signature: fab40163a7fdd14ff62a8b79f9320c163c4850b8edf07d2c36b2ae6dc8876e7e
all runs: boot failed: can't ssh into the instance
testing release v4.19
testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d with gcc (GCC) 8.4.1 20210217
kernel signature: f11a65867db38676e389d093f15851d8bf5e2d37830dcb908d91b953496809c0
all runs: boot failed: can't ssh into the instance
testing release v4.18
testing commit 94710cac0ef4ee177a63b5227664b38c95bbf703 with gcc (GCC) 8.4.1 20210217
kernel signature: adf836a6c9619b512fd5c5f02556cec22876484a5d881ae85b21d0b7909ae36f
all runs: boot failed: can't ssh into the instance
testing release v4.17
testing commit 29dcea88779c856c7dc92040a0c01233263101d4 with gcc (GCC) 8.4.1 20210217
failed to run ["make" "-j" "64" "ARCH=x86_64" "CC=/syzkaller/shared/bisect_bin/gcc-8.1.0/bin/gcc" "bzImage"]: exit status 2
testing release v4.16
testing commit 0adb32858b0bddf4ada5f364a84ed60b196dbcda with gcc (GCC) 8.4.1 20210217
orc_dump.c:106:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations]
orc_dump.c:111:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations]
elf.c:135:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations]
elf.c:140:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations]
testing release v4.15
testing commit d8a5b80568a9cb66810e75b182018e9edb68e8ff with gcc (GCC) 8.4.1 20210217
orc_dump.c:106:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations]
orc_dump.c:111:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations]
pager.c:36:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict]
elf.c:135:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations]
elf.c:140:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations]
testing release v4.14
testing commit bebc6082da0a9f5d47a1ea2edc099bf671058bd4 with gcc (GCC) 8.4.1 20210217
orc_dump.c:105:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations]
orc_dump.c:110:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations]
elf.c:134:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations]
elf.c:139:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations]
pager.c:36:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict]
testing release v4.13
testing commit 569dbb88e80deb68974ef6fdd6a13edb9d686261 with gcc (GCC) 8.4.1 20210217
pager.c:35:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict]
elf.c:144:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations]
elf.c:149:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations]
testing release v4.12
testing commit 6f7da290413ba713f0cdd9ff1a2a9bb129ef4f6c with gcc (GCC) 8.4.1 20210217
pager.c:35:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict]
elf.c:141:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations]
elf.c:146:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations]
testing release v4.11
testing commit a351e9b9fc24e982ec2f0e76379a49826036da12 with gcc (GCC) 7.5.0
elf.c:141:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations]
elf.c:146:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations]
pager.c:35:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict]
testing release v4.10
testing commit c470abd4fde40ea6a0846a2beab642a578c0b8cd with gcc (GCC) 5.5.0
tools/include/linux/log2.h:19:1: error: ignoring attribute 'noreturn' because it conflicts with attribute 'const' [-Werror=attributes]
elf.c:129:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations]
elf.c:134:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations]
pager.c:35:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict]
testing release v4.9
testing commit 69973b830859bc6529a7a0468ba0d80ee5117826 with gcc (GCC) 5.5.0
tools/include/linux/log2.h:19:1: error: ignoring attribute 'noreturn' because it conflicts with attribute 'const' [-Werror=attributes]
elf.c:129:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations]
elf.c:134:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations]
pager.c:35:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict]
testing release v4.8
testing commit c8d2bc9bc39ebea8437fd974fdbc21847bb897a3 with gcc (GCC) 5.5.0
tools/include/linux/log2.h:19:1: error: ignoring attribute 'noreturn' because it conflicts with attribute 'const' [-Werror=attributes]
elf.c:129:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations]
elf.c:134:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations]
pager.c:33:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict]
testing release v4.7
testing commit 523d939ef98fd712632d93a5a2b588e477a7565e with gcc (GCC) 5.5.0
tools/include/linux/log2.h:19:1: error: ignoring attribute 'noreturn' because it conflicts with attribute 'const' [-Werror=attributes]
elf.c:122:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations]
elf.c:127:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations]
pager.c:33:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict]
testing release v4.6
testing commit 2dcd0af568b0cf583645c8a317dd12e344b1c72a with gcc (GCC) 5.5.0
tools/include/linux/log2.h:19:1: error: ignoring attribute 'noreturn' because it conflicts with attribute 'const' [-Werror=attributes]
pager.c:33:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict]
revisions tested: 16, total time: 3h27m52.932114927s (build: 1h42m33.129852673s, test: 1h41m10.936360621s)
the crash already happened on the oldest tested release
commit msg: Linux 5.4
crash: SYZFAIL: tun read failed
2021/03/07 05:26:02 result: hanged=false err=executor 5: exit status 67
SYZFAIL: tun read failed
 (errno 9: Bad file descriptor)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67


SYZFAIL: tun read failed
 (errno 9: Bad file descriptor)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
2021/03/07 05:26:02 executed programs: 6
2021/03/07 05:26:02 result: hanged=false err=executor 0: exit status 67
SYZFAIL: tun read failed
 (errno 9: Bad file descriptor)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67


SYZFAIL: tun read failed
 (errno 9: Bad file descriptor)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
2021/03/07 05:26:02 result: hanged=false err=executor 1: exit status 67
SYZFAIL: tun read failed
 (errno 9: Bad file descriptor)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67


SYZFAIL: tun read failed
 (errno 9: Bad file descriptor)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
2021/03/07 05:26:03 result: hanged=false err=executor 3: exit status 67
SYZFAIL: tun read failed
 (errno 9: Bad file descriptor)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67


SYZFAIL: tun read failed
 (errno 9: Bad file descriptor)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
2021/03/07 05:26:03 result: hanged=false err=executor 4: exit status 67
SYZFAIL: tun read failed
 (errno 9: Bad file descriptor)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67


SYZFAIL: tun read failed
 (errno 9: Bad file descriptor)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
2021/03/07 05:26:03 result: hanged=false err=executor 2: exit status 67
SYZFAIL: tun read failed
 (errno 9: Bad file descriptor)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67


SYZFAIL: tun read failed
 (errno 9: Bad file descriptor)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67