ci2 starts bisection 2024-05-12 03:56:59.577114202 +0000 UTC m=+72396.769438867
bisecting fixing commit since 993bed180178156a70afdafe8aaf23a117107352
building syzkaller on cf82cde132b42c09ac539191ca2dfdab5d810c93
ensuring issue is reproducible on original commit 993bed180178156a70afdafe8aaf23a117107352

testing commit 993bed180178156a70afdafe8aaf23a117107352 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 8c50a12ae7d5fe89e772a206837058d475e84e7a642af01b360844c633b9bf34
run #0: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #1: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #2: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #3: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #4: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #5: crashed: BUG: scheduling while atomic in do_task_dead
run #6: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #7: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #8: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #9: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #10: crashed: BUG: scheduling while atomic in do_task_dead
run #11: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #12: crashed: BUG: using smp_processor_id() in preemptible code in rcu_is_watching
run #13: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #14: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #15: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #16: crashed: BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
run #17: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #18: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #19: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
representative crash: BUG: scheduling while atomic in exit_to_user_mode_prepare, types: [ATOMIC_SLEEP]
check whether we can drop unnecessary instrumentation
disabling configs for [LOCKDEP HANG LEAK UBSAN BUG KASAN], they are not needed
testing commit 993bed180178156a70afdafe8aaf23a117107352 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 1523f2cb9b4a26e915584f85f66999d1b0f584c9cb090812c0151f2439138539
run #0: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #1: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #2: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #3: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #4: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #5: crashed: BUG: scheduling while atomic in bit_wait_io
run #6: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #7: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #8: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #9: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
representative crash: BUG: scheduling while atomic in exit_to_user_mode_prepare, types: [ATOMIC_SLEEP]
the bug reproduces without the instrumentation
disabling configs for [LOCKDEP HANG LEAK UBSAN BUG KASAN], they are not needed
kconfig minimization: base=4920 full=6159 leaves diff=242
split chunks (needed=false): <242>
split chunk #0 of len 242 into 5 parts
testing without sub-chunk 1/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP HANG], they are not needed
testing commit 993bed180178156a70afdafe8aaf23a117107352 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 1f18d88c0b930d29646142f1c4909936b903dcce77ab6b88c9a8d7b76aea0b56
run #0: crashed: BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
run #1: crashed: BUG: scheduling while atomic in do_task_dead
run #2: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #3: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #4: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #5: crashed: BUG: scheduling while atomic in do_task_dead
run #6: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #7: crashed: BUG: scheduling while atomic in do_task_dead
run #8: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #9: crashed: BUG: scheduling while atomic in do_task_dead
representative crash: BUG: scheduling while atomic in do_task_dead, types: [ATOMIC_SLEEP]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [BUG KASAN LOCKDEP HANG LEAK UBSAN], they are not needed
testing commit 993bed180178156a70afdafe8aaf23a117107352 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 9ad88e34850517d20f66042c9223f0ca51b0569f9b5e403b98c3e98819d4cccf
run #0: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #1: crashed: BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
run #2: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #3: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #4: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #5: crashed: BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
run #6: OK
run #7: OK
run #8: OK
run #9: OK
representative crash: BUG: scheduling while atomic in exit_to_user_mode_prepare, types: [ATOMIC_SLEEP UNKNOWN]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [BUG KASAN LOCKDEP HANG LEAK UBSAN], they are not needed
testing commit 993bed180178156a70afdafe8aaf23a117107352 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: e7fca2d05e39d2399b010bafc1a8cfc042b9f546b5c54677be4def6d6d1909bf
run #0: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #1: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #2: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #3: crashed: BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
representative crash: BUG: scheduling while atomic in exit_to_user_mode_prepare, types: [ATOMIC_SLEEP UNKNOWN]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [UBSAN BUG KASAN LOCKDEP HANG LEAK], they are not needed
testing commit 993bed180178156a70afdafe8aaf23a117107352 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 5efbbc8d3f0ed578c460c738cb9ab2b47ec79f05643db37376e1fb35cf0bc0aa
run #0: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #1: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #2: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #3: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #4: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #5: crashed: BUG: scheduling while atomic in do_task_dead
run #6: crashed: BUG: scheduling while atomic in do_task_dead
run #7: crashed: BUG: scheduling while atomic in do_task_dead
run #8: crashed: BUG: scheduling while atomic in do_task_dead
run #9: crashed: BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
run #10: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #11: crashed: BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
run #12: crashed: BUG: scheduling while atomic in do_task_dead
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: BUG: scheduling while atomic in exit_to_user_mode_prepare, types: [ATOMIC_SLEEP]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
testing commit 993bed180178156a70afdafe8aaf23a117107352 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
failed building 993bed180178156a70afdafe8aaf23a117107352: net/socket.c:1191: undefined reference to `wext_handle_ioctl'
net/socket.c:3385: undefined reference to `compat_wext_handle_ioctl'
net/core/net-procfs.c:343: undefined reference to `wext_proc_exit'
net/core/net-procfs.c:327: undefined reference to `wext_proc_init'
minimized to 46 configs; suspects: [HID_ZEROPLUS USB_NET_GL620A USB_NET_MCS7830 USB_NET_NET1080 USB_NET_PLUSB USB_NET_RNDIS_HOST USB_NET_SMSC75XX USB_NET_SMSC95XX USB_NET_SR9700 USB_NET_SR9800 USB_NET_ZAURUS USB_OHCI_HCD USB_OHCI_HCD_PCI USB_OHCI_HCD_PLATFORM USB_OTG USB_OTG_FSM USB_PRINTER USB_SERIAL USB_SERIAL_FTDI_SIO USB_SERIAL_GENERIC USB_SERIAL_PL2303 USB_STORAGE_ALAUDA USB_STORAGE_CYPRESS_ATACB USB_STORAGE_DATAFAB USB_STORAGE_FREECOM USB_STORAGE_ISD200 USB_STORAGE_JUMPSHOT USB_STORAGE_KARMA USB_STORAGE_ONETOUCH USB_STORAGE_SDDR09 USB_STORAGE_SDDR55 USB_STORAGE_USBAT USB_TRANCEVIBRATOR USB_U_AUDIO USB_U_ETHER USB_U_SERIAL USB_WDM WLAN WLAN_VENDOR_ATH WLAN_VENDOR_ATMEL WLAN_VENDOR_BROADCOM WLAN_VENDOR_INTERSIL WLAN_VENDOR_MARVELL WLAN_VENDOR_MEDIATEK WLAN_VENDOR_MICROCHIP WLAN_VENDOR_RALINK WLAN_VENDOR_REALTEK WLAN_VENDOR_RSI WLAN_VENDOR_ZYDAS X86_X32 ZEROPLUS_FF]
disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
testing current HEAD 5d96939590c0122be2138255c921e57e3f78b7bd
testing commit 5d96939590c0122be2138255c921e57e3f78b7bd gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 2cfa1659f3edf26351b77fc4875f2e0b3a21ab03d087f75e5f68d357e59c9a59
run #0: crashed: BUG: scheduling while atomic in do_task_dead
run #1: crashed: BUG: scheduling while atomic in do_task_dead
run #2: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #3: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #4: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #5: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #6: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #7: crashed: BUG: scheduling while atomic in bit_wait_io
run #8: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare
run #9: crashed: BUG: scheduling while atomic in do_task_dead
run #10: crashed: BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
run #11: crashed: BUG: scheduling while atomic in do_task_dead
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: BUG: scheduling while atomic in do_task_dead, types: [ATOMIC_SLEEP]
crash still not fixed/happens on the oldest tested release
reproducer is flaky (0.65 repro chance estimate)
revisions tested: 7, total time: 1h10m4.26500143s (build: 12m21.01668142s, test: 56m8.422911712s)
crash still not fixed or there were kernel test errors
commit msg: Revert "hrtimer: Report offline hrtimer enqueue"
crash: BUG: scheduling while atomic in do_task_dead
BUG: scheduling while atomic: syz-executor.4/5349/0x00000002
Modules linked in:
Preemption disabled at:
[<ffffffff811aa1a6>] __up_write kernel/locking/rwsem.c:1402 [inline]
[<ffffffff811aa1a6>] up_write+0x16/0x110 kernel/locking/rwsem.c:1656
CPU: 1 PID: 5349 Comm: syz-executor.4 Not tainted 5.15.149-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x38/0x49 lib/dump_stack.c:106
 dump_stack+0x10/0x12 lib/dump_stack.c:113
 __schedule_bug.cold+0x80/0xab kernel/sched/core.c:5707
 schedule_debug kernel/sched/core.c:5734 [inline]
 __schedule+0x65d/0x730 kernel/sched/core.c:6402
 do_task_dead+0x3f/0x50 kernel/sched/core.c:6530
 do_exit+0x7cb/0xb40 kernel/exit.c:929
 do_group_exit+0x36/0xa0 kernel/exit.c:1000
 get_signal+0xbd/0x960 kernel/signal.c:2896
 arch_do_signal_or_restart+0xee/0x790 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:148 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
 exit_to_user_mode_prepare+0xff/0x150 kernel/entry/common.c:208
 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
 syscall_exit_to_user_mode+0x21/0x40 kernel/entry/common.c:301
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f43bec00da9
Code: Unable to access opcode bytes at RIP 0x7f43bec00d7f.
RSP: 002b:00007f43be782178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f43bed2ef88 RCX: 00007f43bec00da9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f43bed2ef88
RBP: 00007f43bed2ef80 R08: 00007f43be7826c0 R09: 00007f43be7826c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f43bed2ef8c
R13: 000000000000000b R14: 00007fffda841040 R15: 00007fffda841128
 </TASK>