bisecting fixing commit since 551acdc3c3d2b6bc97f11e31dcf960bc36343bfc
building syzkaller on e2d91b1d0dd8c8b4760986ec8114469246022bb8
testing commit 551acdc3c3d2b6bc97f11e31dcf960bc36343bfc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 43cd815c4cfc3ceab12b430a8df0c94629e4e94154202f7aeb57bc32aafc8e55
run #0: basic kernel testing failed: BUG: program execution failed: executor NUM: exit status NUM
run #1: crashed: WARNING in hci_conn_timeout
run #2: crashed: WARNING in hci_conn_timeout
run #3: crashed: WARNING in corrupted
run #4: crashed: WARNING in hci_conn_timeout
run #5: crashed: WARNING in corrupted
run #6: crashed: WARNING in corrupted
run #7: crashed: WARNING in hci_conn_timeout
run #8: crashed: WARNING in hci_conn_timeout
run #9: crashed: WARNING in corrupted
run #10: crashed: WARNING in corrupted
run #11: crashed: WARNING in hci_conn_timeout
run #12: crashed: WARNING in corrupted
run #13: crashed: WARNING in hci_conn_timeout
run #14: crashed: WARNING in hci_conn_timeout
run #15: crashed: WARNING in hci_conn_timeout
run #16: crashed: WARNING in hci_conn_timeout
run #17: crashed: WARNING in hci_conn_timeout
run #18: crashed: WARNING in corrupted
run #19: crashed: WARNING in hci_conn_timeout
testing current HEAD 559089e0a93d44280ec3ab478830af319c56dbe3
testing commit 559089e0a93d44280ec3ab478830af319c56dbe3
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 59c205c80908fbde30a7f3ee6108a185a69c0b824abdeac25ea9b480138fb85a
run #0: crashed: WARNING in hci_conn_timeout
run #1: crashed: WARNING in hci_conn_timeout
run #2: crashed: WARNING in corrupted
run #3: crashed: WARNING in hci_conn_timeout
run #4: crashed: WARNING in hci_conn_timeout
run #5: crashed: WARNING in corrupted
run #6: crashed: WARNING in hci_conn_timeout
run #7: crashed: WARNING in hci_conn_timeout
run #8: crashed: WARNING in hci_conn_timeout
run #9: crashed: WARNING in hci_conn_timeout
revisions tested: 2, total time: 21m37.276466931s (build: 11m37.14537559s, test: 9m29.123730375s)
the crash still happens on HEAD
commit msg: vmalloc: replace VM_NO_HUGE_VMAP with VM_ALLOW_HUGE_VMAP
crash: WARNING in hci_conn_timeout
------------[ cut here ]------------
WARNING: CPU: 1 PID: 3895 at net/bluetooth/hci_conn.c:573 hci_conn_timeout+0x19a/0x3d0 net/bluetooth/hci_conn.c:573
Modules linked in:
CPU: 0 PID: 3895 Comm: kworker/u5:8 Not tainted 5.18.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: hci5 hci_conn_timeout

RIP: 0010:hci_conn_timeout+0x19a/0x3d0 net/bluetooth/hci_conn.c:573
Code: 31 02 00 00 48 8b 0c c5 00 6a f2 89 4c 89 e2 48 c7 c6 a0 5e f2 89 48 c7 c7 80 19 9f 8c e8 6e d8 2f fc 85 ed 0f 89 c9 fe ff ff <0f> 0b e9 c8 fe ff ff 48 83 c4 08 5b 5d 41 5c c3 4c 89 e7 e8 8e 39
RSP: 0018:ffffc90002b8fd00 EFLAGS: 00010286
RAX: 0000000000000003 RBX: ffff88807cfd0138 RCX: ffffffff87819b76
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88807cfd0010
RBP: 00000000ffffffff R08: 0000000000000000 R09: ffff88807cfd0013
R10: ffffed100f9fa002 R11: 000000000007c079 R12: ffff88807cfd0000
R13: ffff888023073000 R14: ffff88807cfd0138 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc6a089f020 CR3: 0000000021ab5000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 process_one_work+0x841/0x13a0 kernel/workqueue.c:2289
 worker_thread+0x598/0xec0 kernel/workqueue.c:2436