bisecting fixing commit since c0cc271173b2e1c2d8d0ceaef14e4dfa79eefc0d
building syzkaller on a8c6a3f8da30ccf825c6001c81a8adff21829c30
testing commit c0cc271173b2e1c2d8d0ceaef14e4dfa79eefc0d with gcc (GCC) 8.1.0
kernel signature: 4a939cab41a9607c0900402ebb90b387a0f6cb832d5a3d43ff1728293adef594
run #0: crashed: BUG: unable to handle kernel paging request in pm_qos_update_target
run #1: crashed: WARNING in cpu_latency_qos_remove_request
run #2: crashed: WARNING in cpu_latency_qos_remove_request
run #3: crashed: WARNING in cpu_latency_qos_remove_request
run #4: crashed: WARNING in cpu_latency_qos_remove_request
run #5: crashed: WARNING in cpu_latency_qos_remove_request
run #6: crashed: BUG: unable to handle kernel paging request in pm_qos_update_target
run #7: crashed: general protection fault in plist_check_prev_next
run #8: crashed: general protection fault in pm_qos_get_value
run #9: boot failed: can't ssh into the instance
testing current HEAD e99332e7b4cda6e60f5b5916cf9943a79dbef902
testing commit e99332e7b4cda6e60f5b5916cf9943a79dbef902 with gcc (GCC) 8.1.0
kernel signature: 10ca3069c36248e4de3a929b9b9d0db8abac9325a12b64348ed7dab63a35198c
run #0: crashed: WARNING in cpu_latency_qos_remove_request
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
revisions tested: 2, total time: 34m3.357793797s (build: 11m31.853715175s, test: 21m12.803882961s)
the crash still happens on HEAD
commit msg: gcc-10: mark more functions __init to avoid section mismatch warnings
crash: WARNING in cpu_latency_qos_remove_request
------------[ cut here ]------------
cpu_latency_qos_remove_request called for unknown object
WARNING: CPU: 0 PID: 8517 at kernel/power/qos.c:322 cpu_latency_qos_remove_request+0x4e/0x280 kernel/power/qos.c:322
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 8517 Comm: syz-executor.4 Not tainted 5.7.0-rc4-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+0x128/0x182 lib/dump_stack.c:118
 panic+0x22a/0x4e3 kernel/panic.c:221
 __warn.cold.10+0x25/0x26 kernel/panic.c:582
 report_bug+0x1ad/0x270 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:175 [inline]
 do_error_trap+0x123/0x210 arch/x86/kernel/traps.c:267
 do_invalid_op+0x31/0x40 arch/x86/kernel/traps.c:286
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:cpu_latency_qos_remove_request+0x4e/0x280 kernel/power/qos.c:322
Code: c1 ea 03 80 3c 02 00 0f 85 0b 02 00 00 48 81 7b 28 e0 54 da 88 74 1c 48 c7 c6 20 3d 8b 87 48 c7 c7 20 3b 8b 87 e8 6e 40 eb ff <0f> 0b 5b 5d 41 5c 41 5d c3 0f 1f 44 00 00 65 8b 2d 1d 39 af 7e 83
RSP: 0018:ffffc900078efbb0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff88809af12040 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffffff8b8d6160
RBP: ffffc900078efd50 R08: ffffed1015d066a9 R09: ffffed1015d066a9
R10: ffff8880ae833547 R11: ffffed1015d066a8 R12: 1ffff92000f1df85
R13: ffff88809af12000 R14: ffff888091d96a40 R15: 0000000000004112
 snd_pcm_hw_free sound/core/pcm_native.c:827 [inline]
 snd_pcm_common_ioctl+0xb19/0x1c20 sound/core/pcm_native.c:3192
 snd_pcm_ioctl_compat+0x402/0xd20 sound/core/pcm_compat.c:532
 __do_compat_sys_ioctl fs/ioctl.c:865 [inline]
 __se_compat_sys_ioctl fs/ioctl.c:816 [inline]
 __ia32_compat_sys_ioctl+0x1ce/0x220 fs/ioctl.c:816
 do_syscall_32_irqs_on arch/x86/entry/common.c:337 [inline]
 do_fast_syscall_32+0x231/0xba0 arch/x86/entry/common.c:396
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
Kernel Offset: disabled
Rebooting in 86400 seconds..