bisecting cause commit starting from 38b5133ad607ecdcc8d24906d1ac9cc8df41acd5
building syzkaller on f689d40a08ae1c9d73d043e7a2e807bc4022931b
testing commit 38b5133ad607ecdcc8d24906d1ac9cc8df41acd5 with gcc (GCC) 10.2.1 20210217
kernel signature: 3f9135f86e99b43d9c8aa2db25827b670542bd9f7a4eb8b3a7501eb54af47590
all runs: crashed: general protection fault in ieee802154_llsec_parse_key_id
testing release v5.10
testing commit 2c85ebc57b3e1817b6ce1a6b703928e113a90442 with gcc (GCC) 10.2.1 20210217
kernel signature: ad0020076c568fd04e3712999367961eadbdf96cf6f928f88e3fec927cee834c
all runs: crashed: general protection fault in ieee802154_llsec_parse_key_id
testing release v5.9
testing commit bbf5c979011a099af5dc76498918ed7df445635b with gcc (GCC) 10.2.1 20210217
kernel signature: 146ea8d61e7d778cc2e3add7c28d140006fdf1a37baf6454f73000c8aae324f8
all runs: crashed: general protection fault in ieee802154_llsec_parse_key_id
testing release v5.8
testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c with gcc (GCC) 8.4.1 20210217
kernel signature: 3026bb0a2d3a4e46ba6ebc016471b2198916b1a4253f6f438d502ead43644cf9
all runs: crashed: general protection fault in ieee802154_llsec_parse_key_id
testing release v5.7
testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 with gcc (GCC) 8.4.1 20210217
kernel signature: 30805e1918ab19740b728af479d23c466a1509b15d5066c42346b60bba1acc06
all runs: crashed: general protection fault in ieee802154_llsec_parse_key_id
testing release v5.6
testing commit 7111951b8d4973bda27ff663f2cf18b663d15b48 with gcc (GCC) 8.4.1 20210217
kernel signature: b552afeb3d9badde6b049d25a1896276c34501ddca9e79eecf22939451ca8622
all runs: crashed: general protection fault in ieee802154_llsec_parse_key_id
testing release v5.5
testing commit d5226fa6dbae0569ee43ecfc08bdcd6770fc4755 with gcc (GCC) 8.4.1 20210217
kernel signature: c678fb33d6b02ef5ae95e66af3cbdfb9c5dfd670a92997301396b81f5ef3bd36
all runs: crashed: general protection fault in ieee802154_llsec_parse_key_id
testing release v5.4
testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 with gcc (GCC) 8.4.1 20210217
kernel signature: 52ee41a4adefe6c200ca1c1aab7fd66b4c0527ed54579d56d21c5bef1e0aef1f
all runs: crashed: general protection fault in ieee802154_llsec_parse_key_id
testing release v5.3
testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 with gcc (GCC) 8.4.1 20210217
kernel signature: 2129567d001f6bf628693539bc74663811aba0e449fce0f52db8bd19960b7d21
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: 2bd85848c8e605bab2e10a90f90e74378c1715b26b5be1e5dcf483b5a717ff21
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: ce644b2db00fa15d7c22357e49973eb6406746b7dd6a92d876a43edb148d7304
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: 501fdb7cb93a091558ce72cf71a78f666f358922c87ee9a4f9f54b15f153bcfb
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: 27c9a5daec7e71979cb91b8099894dcad0f8f5256be9c3b726c6adaf09d19722
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: bf91f0009f7d8b97f59f150a2275697b3e503e46df53fdf15efd5bead1885534
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: ba888948b709d21e75856f6c02f1042016ddbabb3b1ccd6dcd99fb7cbf9357b1
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: 15, total time: 3h18m36.277904723s (build: 1h37m42.991762902s, test: 1h37m2.600103343s)
the crash already happened on the oldest tested release
commit msg: Linux 5.4
crash: general protection fault in ieee802154_llsec_parse_key_id
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 10665 Comm: syz-executor.4 Not tainted 5.4.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:nla_get_u16 include/net/netlink.h:1501 [inline]
RIP: 0010:nla_get_shortaddr net/ieee802154/nl-mac.c:48 [inline]
RIP: 0010:ieee802154_llsec_parse_key_id+0x117/0x7b0 net/ieee802154/nl-mac.c:559
Code: 00 0f 85 ca 05 00 00 4d 8b 65 30 4d 85 e4 0f 84 f5 03 00 00 49 8d 7c 24 04 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 84
RSP: 0018:ffff888089967600 EFLAGS: 00010247
RAX: dffffc0000000000 RBX: ffff888089967650 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: ffff8880899677b8 R08: ffffed101132cecd R09: ffff888089967650
R10: ffffed101132cecc R11: ffff888089967667 R12: 0000000000000000
R13: ffff8880b2028000 R14: ffff8880899677b8 R15: ffff8880b2028000
FS:  00007fbd76287700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004e1a40 CR3: 0000000089938000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 llsec_remove_key+0x8d/0x130 net/ieee802154/nl-mac.c:896
 ieee802154_nl_llsec_change.isra.0+0x7a/0xe0 net/ieee802154/nl-mac.c:824
 genl_family_rcv_msg+0x5ff/0xf40 net/netlink/genetlink.c:629
 genl_rcv_msg+0xb3/0x160 net/netlink/genetlink.c:654
 netlink_rcv_skb+0x119/0x340 net/netlink/af_netlink.c:2477
 genl_rcv+0x1f/0x30 net/netlink/genetlink.c:665
 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
 netlink_unicast+0x3fc/0x5c0 net/netlink/af_netlink.c:1328
 netlink_sendmsg+0x71e/0xb70 net/netlink/af_netlink.c:1917
 sock_sendmsg_nosec net/socket.c:637 [inline]
 sock_sendmsg+0xac/0xf0 net/socket.c:657
 ___sys_sendmsg+0x653/0x950 net/socket.c:2311
 __sys_sendmsg+0xce/0x170 net/socket.c:2356
 do_syscall_64+0x8e/0x4e0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x466019
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbd76287188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466019
RDX: 0000000000004054 RSI: 0000000020000440 RDI: 0000000000000005
RBP: 00000000004bd067 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007ffd1f0f1aef R14: 00007fbd76287300 R15: 0000000000022000
Modules linked in:
---[ end trace 3e3da113ae0aa5bc ]---
RIP: 0010:nla_get_u16 include/net/netlink.h:1501 [inline]
RIP: 0010:nla_get_shortaddr net/ieee802154/nl-mac.c:48 [inline]
RIP: 0010:ieee802154_llsec_parse_key_id+0x117/0x7b0 net/ieee802154/nl-mac.c:559
Code: 00 0f 85 ca 05 00 00 4d 8b 65 30 4d 85 e4 0f 84 f5 03 00 00 49 8d 7c 24 04 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 84
RSP: 0018:ffff888089967600 EFLAGS: 00010247
RAX: dffffc0000000000 RBX: ffff888089967650 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: ffff8880899677b8 R08: ffffed101132cecd R09: ffff888089967650
R10: ffffed101132cecc R11: ffff888089967667 R12: 0000000000000000
R13: ffff8880b2028000 R14: ffff8880899677b8 R15: ffff8880b2028000
FS:  00007fbd76287700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa94afaf000 CR3: 0000000089938000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400