bisecting fixing commit since e28c0d7c92c89016c12a677616668957351e7542
building syzkaller on 1bf9a662c66aa432ff2fe3bf2562578cef626c09
testing commit e28c0d7c92c89016c12a677616668957351e7542 with gcc (GCC) 8.1.0
kernel signature: 0554838d099f25d5327c6e1beafbbfcab7701c4b5c3d6dd238b769a4134d2a5e
run #0: basic kernel testing failed: BUG: sleeping function called from invalid context in sta_info_move_state
run #1: basic kernel testing failed: BUG: sleeping function called from invalid context in sta_info_move_state
run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in ioctl_standard_call
run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in ioctl_standard_call
run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in ioctl_standard_call
run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in ioctl_standard_call
run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in ioctl_standard_call
run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in ioctl_standard_call
run #8: crashed: BUG: unable to handle kernel NULL pointer dereference in ioctl_standard_call
run #9: crashed: BUG: unable to handle kernel NULL pointer dereference in ioctl_standard_call
testing current HEAD 40f78232f97344afbbeb5b0008615f17c4b93466
testing commit 40f78232f97344afbbeb5b0008615f17c4b93466 with gcc (GCC) 8.1.0
kernel signature: 497835e55a0fc35b5e14d01e87643ba03a37f0c2606627ab179a0403020f6be5
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in ioctl_standard_call
revisions tested: 2, total time: 15m8.317602505s (build: 9m8.096203119s, test: 5m21.579592273s)
the crash still happens on HEAD
commit msg: Merge tag 'pci-v5.11-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
crash: BUG: unable to handle kernel NULL pointer dereference in ioctl_standard_call
BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 11f158067 P4D 11f158067 PUD 11f157067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP
CPU: 0 PID: 10255 Comm: syz-executor.0 Not tainted 5.10.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:call_commit_handler net/wireless/wext-core.c:900 [inline]
RIP: 0010:ioctl_standard_call+0x9b/0x120 net/wireless/wext-core.c:1029
Code: 5e c3 4d 89 e8 4c 89 f1 48 89 da 44 89 e6 48 89 ef e8 c9 fb ff ff 83 f8 8d 75 da 49 8b 45 40 a8 01 74 29 49 8b 85 e0 01 00 00 <48> 8b 00 48 8b 00 48 85 c0 74 17 48 83 c4 08 4c 89 ef 31 c9 5b 31
RSP: 0018:ffffc90002c0bdf8 EFLAGS: 00010202
RAX: 0000000000000000 RBX: ffffffff842e91b0 RCX: 0000000000000006
RDX: 0000000000000000 RSI: ffffffff84b589a9 RDI: ffffffff849fd83e
RBP: ffffc90002c0be50 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000005 R12: 0000000000008b04
R13: ffff88811f2f0000 R14: ffffffff83340370 R15: 0000000000000000
FS:  00007fbef033a700(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000011f159000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 wext_ioctl_dispatch net/wireless/wext-core.c:987 [inline]
 wext_handle_ioctl+0x9b/0xf0 net/wireless/wext-core.c:1048
 sock_ioctl+0x1d0/0x360 net/socket.c:1109
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl fs/ioctl.c:739 [inline]
 __x64_sys_ioctl+0x7c/0xb0 fs/ioctl.c:739
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45deb9
Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fbef0339c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000013440 RCX: 000000000045deb9
RDX: 00000000200000c0 RSI: 0000000000008b04 RDI: 0000000000000003
RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007ffe201ccf0f R14: 00007fbef033a9c0 R15: 000000000118bf2c
Modules linked in:
CR2: 0000000000000000
---[ end trace c82fe862b1633451 ]---
RIP: 0010:call_commit_handler net/wireless/wext-core.c:900 [inline]
RIP: 0010:ioctl_standard_call+0x9b/0x120 net/wireless/wext-core.c:1029
Code: 5e c3 4d 89 e8 4c 89 f1 48 89 da 44 89 e6 48 89 ef e8 c9 fb ff ff 83 f8 8d 75 da 49 8b 45 40 a8 01 74 29 49 8b 85 e0 01 00 00 <48> 8b 00 48 8b 00 48 85 c0 74 17 48 83 c4 08 4c 89 ef 31 c9 5b 31
RSP: 0018:ffffc90002c0bdf8 EFLAGS: 00010202
RAX: 0000000000000000 RBX: ffffffff842e91b0 RCX: 0000000000000006
RDX: 0000000000000000 RSI: ffffffff84b589a9 RDI: ffffffff849fd83e
RBP: ffffc90002c0be50 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000005 R12: 0000000000008b04
R13: ffff88811f2f0000 R14: ffffffff83340370 R15: 0000000000000000
FS:  00007fbef033a700(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000011f159000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400