bisecting fixing commit since ab2d1d40a128f4b8f8857ae3ecd312c79b3ff8a1
building syzkaller on 6bdac76629d4d80501671c0c312d6b81411481e7
testing commit ab2d1d40a128f4b8f8857ae3ecd312c79b3ff8a1
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 640d8a6485d1dd49df1c63899f724cbdc56f62ba44030e733b208eb01123c233
all runs: crashed: BUG: using smp_processor_id() in preemptible code in usbnet_skb_return
testing current HEAD e08dd85cc95e42e6a63acb841f01ccff64dd8fa7
testing commit e08dd85cc95e42e6a63acb841f01ccff64dd8fa7
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 570769325b001bd7aadcf7805d09975ad66ad3baf7b35212600bf771af01f12c
all runs: crashed: BUG: using smp_processor_id() in preemptible code in usbnet_skb_return
revisions tested: 2, total time: 27m44.692889333s (build: 13m13.912582891s, test: 13m51.809056604s)
the crash still happens on HEAD
commit msg: ANDROID: fix up abi issue with struct snd_pcm_runtime, again
crash: BUG: using smp_processor_id() in preemptible code in usbnet_skb_return
BUG: using smp_processor_id() in preemptible [00000000] code: dhcpcd/198
caller is debug_smp_processor_id+0x17/0x20 lib/smp_processor_id.c:59
CPU: 0 PID: 198 Comm: dhcpcd Not tainted 5.10.110-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack_lvl+0x81/0xac lib/dump_stack.c:118
 dump_stack+0x10/0x12 lib/dump_stack.c:135
 check_preemption_disabled+0xc4/0xd0 lib/smp_processor_id.c:48
 debug_smp_processor_id+0x17/0x20 lib/smp_processor_id.c:59
 usbnet_skb_return+0x43/0x290 drivers/net/usb/usbnet.c:307
 usbnet_resume_rx+0x34/0x80 drivers/net/usb/usbnet.c:680
 usbnet_change_mtu+0x1d5/0x2a0 drivers/net/usb/usbnet.c:393
 __dev_set_mtu net/core/dev.c:8578 [inline]
 dev_set_mtu_ext+0x28d/0x5d0 net/core/dev.c:8631
 dev_set_mtu+0x97/0x100 net/core/dev.c:8655
 dev_ifsioc+0x441/0x750 net/core/dev_ioctl.c:261
 dev_ioctl+0x146/0x910 net/core/dev_ioctl.c:505
 sock_do_ioctl+0x172/0x240 net/socket.c:1071
 sock_ioctl+0x336/0x600 net/socket.c:1188
 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+0x129/0x1a0 fs/ioctl.c:739
 do_syscall_64+0x32/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fdca5a050e7
Code: 3c 1c e8 1c ff ff ff 85 c0 79 87 49 c7 c4 ff ff ff ff 5b 5d 4c 89 e0 41 5c c3 66 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 61 9d 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffd386cb868 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fdca59176c8 RCX: 00007fdca5a050e7
RDX: 00007ffd386dba58 RSI: 0000000000008922 RDI: 0000000000000012
RBP: 00007ffd386ebc08 R08: 00007ffd386dba18 R09: 00007ffd386db9c8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd386dba58 R14: 0000000000000028 R15: 0000000000008922