bisecting cause commit starting from fe07bfda2fb9cdef8a4d4008a409bb02f35f1bd8
building syzkaller on 183afb6ca0e10390716c3552869388faedd7b69f
testing commit fe07bfda2fb9cdef8a4d4008a409bb02f35f1bd8 with gcc (GCC) 10.2.1 20210217
kernel signature: 37fd4c2c485bc1f585f1defd09b912bcb9240372342bece753a14281ea350397
all runs: crashed: SYZFAIL: netlink_send_ext: bad netlink ack type
testing release v5.11
testing commit f40ddce88593482919761f74910f42f4b84c004b with gcc (GCC) 10.2.1 20210217
kernel signature: b47e4715276950756b03b5ad9dbf4728b20992193d0763caa8c0112f7aa0328d
all runs: crashed: SYZFAIL: netlink_send_ext: bad netlink ack type
testing release v5.10
testing commit 2c85ebc57b3e1817b6ce1a6b703928e113a90442 with gcc (GCC) 10.2.1 20210217
kernel signature: 0ca9dcf3af21d1a5232536de4f8c9778d9f136c1a60b7c1c645fc9418ee2b463
all runs: crashed: SYZFAIL: netlink_send_ext: bad netlink ack type
testing release v5.9
testing commit bbf5c979011a099af5dc76498918ed7df445635b with gcc (GCC) 10.2.1 20210217
kernel signature: f35ba365435e6b891c352e8b6ef0836217246197fa760240a81c026a0fb39f68
all runs: crashed: SYZFAIL: netlink_send_ext: bad netlink ack type
testing release v5.8
testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c with gcc (GCC) 8.4.1 20210217
kernel signature: 94433569a06f503ffd5ee1505f4d9ad2586a02d16c23b5179fe502fccaf110e0
run #0: crashed: SYZFAIL: wrong response packet
run #1: crashed: SYZFAIL: netlink_send_ext: bad netlink ack type
run #2: crashed: SYZFAIL: netlink_send_ext: bad netlink ack type
run #3: crashed: SYZFAIL: netlink_send_ext: bad netlink ack type
run #4: crashed: SYZFAIL: netlink_send_ext: bad netlink ack type
run #5: crashed: SYZFAIL: netlink_send_ext: bad netlink ack type
run #6: crashed: SYZFAIL: netlink_send_ext: bad netlink ack type
run #7: crashed: SYZFAIL: netlink_send_ext: bad netlink ack type
run #8: crashed: SYZFAIL: netlink_send_ext: bad netlink ack type
run #9: crashed: SYZFAIL: netlink_send_ext: bad netlink ack type
testing release v5.7
testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 with gcc (GCC) 8.4.1 20210217
kernel signature: 78c678695cfee13124c7582aff8168c87c238d583f7bba228e458e28449b1bcc
all runs: crashed: SYZFAIL: netlink_send_ext: bad netlink ack type
testing release v5.6
testing commit 7111951b8d4973bda27ff663f2cf18b663d15b48 with gcc (GCC) 8.4.1 20210217
kernel signature: d012884b640f8234fba9af21ed9373f2ae288359cb958e6d3fd018f2d7db15c4
all runs: crashed: SYZFAIL: netlink_send_ext: bad netlink ack type
testing release v5.5
testing commit d5226fa6dbae0569ee43ecfc08bdcd6770fc4755 with gcc (GCC) 8.4.1 20210217
kernel signature: db17495985a61d32bc244f0e3b0a17e3d073af11865a7b3187256b84120ae9fc
all runs: crashed: SYZFAIL: netlink_send_ext: bad netlink ack type
testing release v5.4
testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 with gcc (GCC) 8.4.1 20210217
kernel signature: 74d42938814cbfecda9f226f65e037160feb5095f5d38b0816808cb7f1c6eae3
all runs: crashed: SYZFAIL: netlink_send_ext: bad netlink ack type
testing release v5.3
testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 with gcc (GCC) 8.4.1 20210217
kernel signature: b1040e0f4eb5f54d37093ddf7bc29d95ef219d49248381f692ab2c8de1dcf331
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: ad1416d09d3a9f034257f5372d798ee6e10d2f74a4e6c72afce312080c208713
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: 3991a6133e8c5e174da22c33f645713f4c9fe313d1a85e48f4529f02e1b830e4
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: a2ccbb9ea22ede4e09097ae88069407fe862e663773d2dcc575d194a67106afc
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: d75671782ba838b4baa241d9e3ffcc1082f76bb5c3d96819b62bdd2cd25d752f
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: d0dbf87cfb9c381659727f304233dfe8d302a3c1aa055abd59ffeec47e996d90
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: 5111878dc46bb1721e5e9c1783d2718416406bf7b71e7956b6c9e15c372d8d4d
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]
pager.c:36:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict]
elf.c:134:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations]
elf.c:139:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations]
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: 3h52m22.279739646s (build: 1h46m24.453841561s, test: 2h1m55.587138003s)
the crash already happened on the oldest tested release
commit msg: Linux 5.4
crash: SYZFAIL: netlink_send_ext: bad netlink ack type
2021/03/08 10:55:26 result: hanged=false err=executor 5: exit status 67
SYZFAIL: netlink_send_ext: bad netlink ack type
type=35 (errno 22: Invalid argument)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67


SYZFAIL: netlink_send_ext: bad netlink ack type
type=35 (errno 22: Invalid argument)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
2021/03/08 10:55:32 executed programs: 4585