ci starts bisection 2023-03-21 14:46:19.113375246 +0000 UTC m=+22827.155268055
bisecting fixing commit since 925cf0457d7e62ce08878ffb789189ac08ca8677
building syzkaller on bcdf85f8bd3fccff5bc9507a589c4847d9b35405
ensuring issue is reproducible on original commit 925cf0457d7e62ce08878ffb789189ac08ca8677

testing commit 925cf0457d7e62ce08878ffb789189ac08ca8677 gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 8753dfcc9914b08f58345fb6897c62f20f1c6165d987acbfd5897330ee324b3e
all runs: crashed: BUG: "hc->tx_t_ipi == NUM" holds (exception!) at net/dccp/ccids/ccid3.c:LINE/ccid3_update_send_interval()
testing current HEAD 17214b70a159c6547df9ae204a6275d983146f6b
testing commit 17214b70a159c6547df9ae204a6275d983146f6b gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: b74b9ddea7cee35aa8d73b8895ac35e5dfe9e61094d4f86ca1cf2e5f54fd55b7
all runs: crashed: BUG: "hc->tx_t_ipi == NUM" holds (exception!) at net/dccp/ccids/ccid3.c:LINE/ccid3_update_send_interval()
revisions tested: 2, total time: 25m37.564814072s (build: 17m55.310519623s, test: 6m56.621582162s)
the crash still happens on HEAD
commit msg: Merge tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fsverity/linux
crash: BUG: "hc->tx_t_ipi == NUM" holds (exception!) at net/dccp/ccids/ccid3.c:LINE/ccid3_update_send_interval()
dccp_xmit_packet: Payload too large (65475) for featneg.
BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval()
CPU: 1 PID: 5596 Comm: syz-executor.0 Not tainted 6.3.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x8e/0xb0 lib/dump_stack.c:106
 ccid3_hc_tx_update_s net/dccp/ccids/ccid3.c:169 [inline]
 ccid3_hc_tx_packet_sent+0xde/0x140 net/dccp/ccids/ccid3.c:353
 ccid_hc_tx_packet_sent net/dccp/ccid.h:175 [inline]
 dccp_xmit_packet+0x28a/0x680 net/dccp/output.c:289
 dccp_write_xmit+0x112/0x190 net/dccp/output.c:366
 dccp_sendmsg+0x79e/0xa40 net/dccp/proto.c:788
 sock_sendmsg_nosec net/socket.c:724 [inline]
 sock_sendmsg+0xc0/0x150 net/socket.c:747
 ____sys_sendmsg+0x5ff/0x8f0 net/socket.c:2501
 ___sys_sendmsg+0xdb/0x160 net/socket.c:2555
 __sys_sendmsg+0xc7/0x160 net/socket.c:2584
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb49308c0f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb493e0d168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fb4931abf80 RCX: 00007fb49308c0f9
RDX: 0000000000000000 RSI: 00000000200004c0 RDI: 0000000000000004
RBP: 00007fb4930e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffb1db088f R14: 00007fb493e0d300 R15: 0000000000022000
 </TASK>
BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval()
CPU: 1 PID: 5596 Comm: syz-executor.0 Not tainted 6.3.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x8e/0xb0 lib/dump_stack.c:106
 ccid3_hc_tx_update_s net/dccp/ccids/ccid3.c:169 [inline]
 ccid3_hc_tx_packet_sent+0xde/0x140 net/dccp/ccids/ccid3.c:353
 ccid_hc_tx_packet_sent net/dccp/ccid.h:175 [inline]
 dccp_xmit_packet+0x28a/0x680 net/dccp/output.c:289
 dccp_write_xmit+0x112/0x190 net/dccp/output.c:366
 dccp_sendmsg+0x79e/0xa40 net/dccp/proto.c:788
 sock_sendmsg_nosec net/socket.c:724 [inline]
 sock_sendmsg+0xc0/0x150 net/socket.c:747
 ____sys_sendmsg+0x5ff/0x8f0 net/socket.c:2501
 ___sys_sendmsg+0xdb/0x160 net/socket.c:2555
 __sys_sendmsg+0xc7/0x160 net/socket.c:2584
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb49308c0f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb493e0d168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fb4931abf80 RCX: 00007fb49308c0f9
RDX: 0000000000000000 RSI: 00000000200004c0 RDI: 0000000000000004
RBP: 00007fb4930e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffb1db088f R14: 00007fb493e0d300 R15: 0000000000022000
 </TASK>
BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval()
CPU: 0 PID: 5596 Comm: syz-executor.0 Not tainted 6.3.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x8e/0xb0 lib/dump_stack.c:106
 ccid3_hc_tx_update_s net/dccp/ccids/ccid3.c:169 [inline]
 ccid3_hc_tx_packet_sent+0xde/0x140 net/dccp/ccids/ccid3.c:353
 ccid_hc_tx_packet_sent net/dccp/ccid.h:175 [inline]
 dccp_xmit_packet+0x28a/0x680 net/dccp/output.c:289
 dccp_write_xmit+0x112/0x190 net/dccp/output.c:366
 dccp_sendmsg+0x79e/0xa40 net/dccp/proto.c:788
 sock_sendmsg_nosec net/socket.c:724 [inline]
 sock_sendmsg+0xc0/0x150 net/socket.c:747
 ____sys_sendmsg+0x5ff/0x8f0 net/socket.c:2501
 ___sys_sendmsg+0xdb/0x160 net/socket.c:2555
 __sys_sendmsg+0xc7/0x160 net/socket.c:2584
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb49308c0f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb493e0d168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fb4931abf80 RCX: 00007fb49308c0f9
RDX: 0000000000000000 RSI: 00000000200004c0 RDI: 0000000000000004
RBP: 00007fb4930e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffb1db088f R14: 00007fb493e0d300 R15: 0000000000022000
 </TASK>
BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval()
CPU: 0 PID: 5596 Comm: syz-executor.0 Not tainted 6.3.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x8e/0xb0 lib/dump_stack.c:106
 ccid3_hc_tx_update_s net/dccp/ccids/ccid3.c:169 [inline]
 ccid3_hc_tx_packet_sent+0xde/0x140 net/dccp/ccids/ccid3.c:353
 ccid_hc_tx_packet_sent net/dccp/ccid.h:175 [inline]
 dccp_xmit_packet+0x28a/0x680 net/dccp/output.c:289
 dccp_write_xmit+0x112/0x190 net/dccp/output.c:366
 dccp_sendmsg+0x79e/0xa40 net/dccp/proto.c:788
 sock_sendmsg_nosec net/socket.c:724 [inline]
 sock_sendmsg+0xc0/0x150 net/socket.c:747
 ____sys_sendmsg+0x5ff/0x8f0 net/socket.c:2501
 ___sys_sendmsg+0xdb/0x160 net/socket.c:2555
 __sys_sendmsg+0xc7/0x160 net/socket.c:2584
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb49308c0f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb493e0d168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fb4931abf80 RCX: 00007fb49308c0f9
RDX: 0000000000000000 RSI: 00000000200004c0 RDI: 0000000000000004
RBP: 00007fb4930e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffb1db088f R14: 00007fb493e0d300 R15: 0000000000022000
 </TASK>