bisecting cause commit starting from 000fe940e51f03210bd5fb1061d4d82ed9a7b1b6
building syzkaller on 4ebb27982f8984ed57466f87099acc0b250a1b5c
testing commit 000fe940e51f03210bd5fb1061d4d82ed9a7b1b6
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 7e6b6914cab6cb48c133911f8a1f794760c0b86eb6c5445fa9bac966f326226d
run #0: basic kernel testing failed: BUG: program execution failed: executor NUM: exit status NUM
run #1: crashed: WARNING in bpf_prog_test_run_xdp
run #2: crashed: WARNING in bpf_prog_test_run_xdp
run #3: crashed: WARNING in bpf_prog_test_run_xdp
run #4: crashed: WARNING in bpf_prog_test_run_xdp
run #5: crashed: WARNING in bpf_prog_test_run_xdp
run #6: crashed: WARNING in bpf_prog_test_run_xdp
run #7: crashed: WARNING in bpf_prog_test_run_xdp
run #8: crashed: WARNING in bpf_prog_test_run_xdp
run #9: crashed: WARNING in bpf_prog_test_run_xdp
run #10: crashed: WARNING in bpf_prog_test_run_xdp
run #11: crashed: WARNING in bpf_prog_test_run_xdp
run #12: crashed: WARNING in bpf_prog_test_run_xdp
run #13: crashed: WARNING in bpf_prog_test_run_xdp
run #14: crashed: WARNING in bpf_prog_test_run_xdp
run #15: crashed: WARNING in bpf_prog_test_run_xdp
run #16: crashed: WARNING in bpf_prog_test_run_xdp
run #17: crashed: WARNING in bpf_prog_test_run_xdp
run #18: crashed: WARNING in bpf_prog_test_run_xdp
run #19: crashed: WARNING in bpf_prog_test_run_xdp
testing release v5.16
testing commit df0cc57e057f18e44dac8e6c18aba47ab53202f9
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 6392e7dc90e0a4647080a5029d93ca58348fb8a5852ea8aba24fe1cfc2cb5f6d
all runs: OK
# git bisect start 000fe940e51f03210bd5fb1061d4d82ed9a7b1b6 df0cc57e057f18e44dac8e6c18aba47ab53202f9
Bisecting: 6186 revisions left to test after this (roughly 13 steps)
[9149fe8ba7ff798ea1c6b1fa05eeb59f95f9a94a] Merge tag 'erofs-for-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs

testing commit 9149fe8ba7ff798ea1c6b1fa05eeb59f95f9a94a
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 7f134a67b45cea8ba8f85ca9afab33d3d0f37a6b940dff276cc15dba9b187b11
all runs: OK
# git bisect good 9149fe8ba7ff798ea1c6b1fa05eeb59f95f9a94a
Bisecting: 3168 revisions left to test after this (roughly 12 steps)
[aee101d7b95a03078945681dd7f7ea5e4a1e7686] powerpc/64s: Mask SRR0 before checking against the masked NIP

testing commit aee101d7b95a03078945681dd7f7ea5e4a1e7686
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: a68128aec9313dc64378d8a41d882039aeb0479f21fcf07352cd83677a6505f7
all runs: OK
# git bisect good aee101d7b95a03078945681dd7f7ea5e4a1e7686
Bisecting: 1567 revisions left to test after this (roughly 11 steps)
[57d17378a4a042401b0c2fe211e5a0e3a276cb3d] Merge tag 'perf-tools-for-v5.17-2022-01-16' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

testing commit 57d17378a4a042401b0c2fe211e5a0e3a276cb3d
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: e9d799aca1a05000a105e174b24ae0de10d1a6dbc0eda0ffb1c106ffaae3db1c
run #0: basic kernel testing failed: BUG: program execution failed: executor NUM: exit status NUM
run #1: OK
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 good 57d17378a4a042401b0c2fe211e5a0e3a276cb3d
Bisecting: 783 revisions left to test after this (roughly 10 steps)
[a41ec880aa7beeabcb3bfa476ef35b23f376133b] zsmalloc: move huge compressed obj from page to zspage

testing commit a41ec880aa7beeabcb3bfa476ef35b23f376133b
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 8549b945688c918a7c465e70897abac5c606874f458e1c76b3ce602a22880ae9
all runs: OK
# git bisect good a41ec880aa7beeabcb3bfa476ef35b23f376133b
Bisecting: 363 revisions left to test after this (roughly 9 steps)
[23a46422c56144939c091c76cf389aa863ce9c18] Merge tag 'net-5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

testing commit 23a46422c56144939c091c76cf389aa863ce9c18
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 25012e061272b51739be2007457ee71de021fb133381299908ae5e16e304e125
all runs: OK
# git bisect good 23a46422c56144939c091c76cf389aa863ce9c18
Bisecting: 181 revisions left to test after this (roughly 8 steps)
[8b0fdcdc3a7d44aff907f0103f5ffb86b12bfe71] net: remove bond_slave_has_mac_rcu()

testing commit 8b0fdcdc3a7d44aff907f0103f5ffb86b12bfe71
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 00d298f54ae13f221b97a2e6c4b6f11d8ca1e0e467fc5285f1d5b957842a0c49
run #0: basic kernel testing failed: BUG: program execution failed: executor NUM: exit status NUM
run #1: crashed: WARNING in bpf_prog_test_run_xdp
run #2: crashed: WARNING in bpf_prog_test_run_xdp
run #3: crashed: WARNING in bpf_prog_test_run_xdp
run #4: crashed: WARNING in bpf_prog_test_run_xdp
run #5: crashed: WARNING in bpf_prog_test_run_xdp
run #6: crashed: WARNING in bpf_prog_test_run_xdp
run #7: crashed: WARNING in bpf_prog_test_run_xdp
run #8: crashed: WARNING in bpf_prog_test_run_xdp
run #9: crashed: WARNING in bpf_prog_test_run_xdp
# git bisect bad 8b0fdcdc3a7d44aff907f0103f5ffb86b12bfe71
Bisecting: 90 revisions left to test after this (roughly 7 steps)
[9f16e0fa1079022632880da3e8346537ba4eeecc] net: usb: asix: remove redundant assignment to variable reg

testing commit 9f16e0fa1079022632880da3e8346537ba4eeecc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 46ec56cfd573f7af76048f2724cc8cb5d07df6c93c2e82c68a813e50024036a8
all runs: crashed: WARNING in bpf_prog_test_run_xdp
# git bisect bad 9f16e0fa1079022632880da3e8346537ba4eeecc
Bisecting: 45 revisions left to test after this (roughly 6 steps)
[4e950747ba126eb4accacf8f8b10459f374e6e9e] Merge branch 'bpf: allow cgroup progs to export custom retval to userspace'

testing commit 4e950747ba126eb4accacf8f8b10459f374e6e9e
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 0f5a22f107751e9351b56e2ec2d575c45993865059f224bd2e4c85691d843bcf
all runs: OK
# git bisect good 4e950747ba126eb4accacf8f8b10459f374e6e9e
Bisecting: 22 revisions left to test after this (roughly 5 steps)
[ed7a58cb40bd1dda5bf3a7f4d18d2652423fd14b] net: marvell: rely on xdp_update_skb_shared_info utility routine

testing commit ed7a58cb40bd1dda5bf3a7f4d18d2652423fd14b
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 36cf4677659e6243d6e5420bb8531f243a25ce62e35a60113d03a65fce31cc86
all runs: OK
# git bisect good ed7a58cb40bd1dda5bf3a7f4d18d2652423fd14b
Bisecting: 11 revisions left to test after this (roughly 4 steps)
[110221081aac19ae147e472f590abe20a750dd25] bpf: selftests: update xdp_adjust_tail selftest to include xdp frags

testing commit 110221081aac19ae147e472f590abe20a750dd25
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: b3ed9e7882ed3f4d578dbc8f366703ad5c736c227ec1cf67e54bcb2cc9aa5562
all runs: crashed: WARNING in bpf_prog_test_run_xdp
# git bisect bad 110221081aac19ae147e472f590abe20a750dd25
Bisecting: 5 revisions left to test after this (roughly 3 steps)
[0165cc817075cf701e4289838f1d925ff1911b3e] bpf: introduce bpf_xdp_get_buff_len helper

testing commit 0165cc817075cf701e4289838f1d925ff1911b3e
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 5f83fcb54bd14dfeca32749f2558384b4effaee553c66ba83f6a7dfdc6f65607
all runs: OK
# git bisect good 0165cc817075cf701e4289838f1d925ff1911b3e
Bisecting: 2 revisions left to test after this (roughly 2 steps)
[be3d72a2896cb24090f268dce4aa8a304d40bc23] bpf: move user_size out of bpf_test_init

testing commit be3d72a2896cb24090f268dce4aa8a304d40bc23
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 71dd55ea5f415abda4a3cf50626df286dc6f5b00504cb36669a3f873db4be659
run #0: basic kernel testing failed: BUG: program execution failed: executor NUM: exit status NUM
run #1: OK
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 good be3d72a2896cb24090f268dce4aa8a304d40bc23
Bisecting: 0 revisions left to test after this (roughly 1 step)
[7855e0db150ad8f494d66913c26deadc52f12e07] bpf: test_run: add xdp_shared_info pointer in bpf_test_finish signature

testing commit 7855e0db150ad8f494d66913c26deadc52f12e07
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: b3ed9e7882ed3f4d578dbc8f366703ad5c736c227ec1cf67e54bcb2cc9aa5562
run #0: basic kernel testing failed: BUG: program execution failed: executor NUM: failed to write control pipe: write |NUM: broken pipe
run #1: crashed: WARNING in bpf_prog_test_run_xdp
run #2: crashed: WARNING in bpf_prog_test_run_xdp
run #3: crashed: WARNING in bpf_prog_test_run_xdp
run #4: crashed: WARNING in bpf_prog_test_run_xdp
run #5: crashed: WARNING in bpf_prog_test_run_xdp
run #6: crashed: WARNING in bpf_prog_test_run_xdp
run #7: crashed: WARNING in bpf_prog_test_run_xdp
run #8: crashed: WARNING in bpf_prog_test_run_xdp
run #9: crashed: WARNING in bpf_prog_test_run_xdp
# git bisect bad 7855e0db150ad8f494d66913c26deadc52f12e07
Bisecting: 0 revisions left to test after this (roughly 0 steps)
[1c194998252469cad00a08bd9ef0b99fd255c260] bpf: introduce frags support to bpf_prog_test_run_xdp()

testing commit 1c194998252469cad00a08bd9ef0b99fd255c260
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 6d8802f233eb5e39253d18aec9c8b7fbab89832f5477a23b772c533c3d9a653e
all runs: crashed: WARNING in bpf_prog_test_run_xdp
# git bisect bad 1c194998252469cad00a08bd9ef0b99fd255c260
1c194998252469cad00a08bd9ef0b99fd255c260 is the first bad commit
commit 1c194998252469cad00a08bd9ef0b99fd255c260
Author: Lorenzo Bianconi <lorenzo@kernel.org>
Date:   Fri Jan 21 11:09:58 2022 +0100

    bpf: introduce frags support to bpf_prog_test_run_xdp()
    
    Introduce the capability to allocate a xdp frags in
    bpf_prog_test_run_xdp routine. This is a preliminary patch to
    introduce the selftests for new xdp frags ebpf helpers
    
    Acked-by: Toke Hoiland-Jorgensen <toke@redhat.com>
    Acked-by: John Fastabend <john.fastabend@gmail.com>
    Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
    Link: https://lore.kernel.org/r/b7c0e425a9287f00f601c4fc0de54738ec6ceeea.1642758637.git.lorenzo@kernel.org
    Signed-off-by: Alexei Starovoitov <ast@kernel.org>

 net/bpf/test_run.c | 58 ++++++++++++++++++++++++++++++++++++++++++------------
 1 file changed, 45 insertions(+), 13 deletions(-)

culprit signature: 6d8802f233eb5e39253d18aec9c8b7fbab89832f5477a23b772c533c3d9a653e
parent  signature: 71dd55ea5f415abda4a3cf50626df286dc6f5b00504cb36669a3f873db4be659
revisions tested: 16, total time: 3h3m41.091041315s (build: 2h16m17.09144373s, test: 45m55.415709075s)
first bad commit: 1c194998252469cad00a08bd9ef0b99fd255c260 bpf: introduce frags support to bpf_prog_test_run_xdp()
recipients (to): ["ast@kernel.org" "john.fastabend@gmail.com" "lorenzo@kernel.org" "toke@redhat.com"]
recipients (cc): []
crash: WARNING in bpf_prog_test_run_xdp
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4064 at include/linux/thread_info.h:230 check_copy_size include/linux/thread_info.h:230 [inline]
WARNING: CPU: 0 PID: 4064 at include/linux/thread_info.h:230 copy_from_user include/linux/uaccess.h:191 [inline]
WARNING: CPU: 0 PID: 4064 at include/linux/thread_info.h:230 bpf_prog_test_run_xdp+0xc74/0x1010 net/bpf/test_run.c:948
Modules linked in:
CPU: 1 PID: 4064 Comm: syz-executor410 Not tainted 5.16.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:check_copy_size include/linux/thread_info.h:230 [inline]
RIP: 0010:copy_from_user include/linux/uaccess.h:191 [inline]
RIP: 0010:bpf_prog_test_run_xdp+0xc74/0x1010 net/bpf/test_run.c:948
Code: 88 ff ff 48 c1 ff 06 4a 8d 1c 06 48 c1 e7 0c 49 81 fa ff ff ff 7f 4c 8d 24 07 0f 86 3f fe ff ff 48 8b 5c 24 48 4c 8b 64 24 50 <0f> 0b 41 bd f2 ff ff ff e9 01 fc ff ff 4c 8d a1 b0 05 00 00 be 04
RSP: 0018:ffffc900026afb48 EFLAGS: 00010292
RAX: ffff888000000000 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000020000000 RDI: 00000000730f9000
RBP: ffff8880770ac000 R08: 0000000000000dc0 R09: ffffffff8c81f917
R10: fffffffffffff0de R11: 0000000000000001 R12: ffffc90001166000
R13: 0000000000000dc0 R14: 00000000fffff0de R15: ffffc900026afde8
FS:  0000555556b12300(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000280 CR3: 0000000070e04000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bpf_prog_test_run kernel/bpf/syscall.c:3357 [inline]
 __sys_bpf+0x1054/0x4410 kernel/bpf/syscall.c:4659
 __do_sys_bpf kernel/bpf/syscall.c:4745 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4743 [inline]
 __x64_sys_bpf+0x70/0xb0 kernel/bpf/syscall.c:4743
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f3c084f1d09
Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe4136b988 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3c084f1d09
RDX: 0000000000000048 RSI: 00000000200013c0 RDI: 000000000000000a
RBP: 00007f3c084b5eb0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3c084b5f40
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>