ci2 starts bisection 2024-06-24 21:34:05.19144864 +0000 UTC m=+9593.031934918 bisecting fixing commit since 92432f07d6635531a982c0d4c7ea1274915aac67 building syzkaller on 578f753887693e1375d17cf79dc1c575f6032a5d ensuring issue is reproducible on original commit 92432f07d6635531a982c0d4c7ea1274915aac67 testing commit 92432f07d6635531a982c0d4c7ea1274915aac67 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 915de7289b0c1875f7d6db0d0185c85fd135335d1ca0d83e86429c5d1450addf all runs: crashed: BUG: scheduling while atomic in rcu_boost_kthread representative crash: BUG: scheduling while atomic in rcu_boost_kthread, types: [ATOMIC_SLEEP] check whether we can drop unnecessary instrumentation disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit 92432f07d6635531a982c0d4c7ea1274915aac67 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d98e86a3e03e767ce6853581ce04388c5583981efea051166e9202c04c34207e run #0: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #1: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #2: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #3: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #4: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #5: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #6: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #7: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #8: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #9: OK representative crash: BUG: scheduling while atomic in rcu_boost_kthread, types: [ATOMIC_SLEEP] the bug reproduces without the instrumentation disabling configs for [KASAN LOCKDEP HANG LEAK UBSAN BUG], they are not needed kconfig minimization: base=5179 full=6492 leaves diff=255 split chunks (needed=false): <255> split chunk #0 of len 255 into 5 parts testing without sub-chunk 1/5 disabling configs for [KASAN LOCKDEP HANG LEAK UBSAN BUG], they are not needed testing commit 92432f07d6635531a982c0d4c7ea1274915aac67 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e27aed9e5a9440d4a3df9765d8d40bacafe1f378012fc980a567ecb3b57a2dc3 run #0: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #1: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #2: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #3: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #4: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #5: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #6: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #7: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #8: OK run #9: OK representative crash: BUG: scheduling while atomic in rcu_boost_kthread, types: [ATOMIC_SLEEP] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [KASAN LOCKDEP HANG LEAK UBSAN BUG], they are not needed testing commit 92432f07d6635531a982c0d4c7ea1274915aac67 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a605382fdbe49ee2f4791cb760da1333f014588f46c3e7f7a3af422b17fc19cf run #0: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #1: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #2: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #3: crashed: BUG: scheduling while atomic in rcu_boost_kthread 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 rcu_boost_kthread, types: [ATOMIC_SLEEP] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit 92432f07d6635531a982c0d4c7ea1274915aac67 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d36c1980f6b72bb53aaf1c6161ea892e24f6e42a1ca342caccc2b2402a3127e2 run #0: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #1: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #2: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #3: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #4: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #5: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #6: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #7: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #8: OK run #9: OK run #10: OK run #11: OK 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 rcu_boost_kthread, types: [ATOMIC_SLEEP] 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 92432f07d6635531a982c0d4c7ea1274915aac67 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 068ae9972d931a93f373740965863d4d9e9a45d3074ad768ba6d3f54b3290d32 run #0: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #1: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #2: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #3: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #4: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #5: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #6: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #7: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #8: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #9: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #10: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #11: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #12: crashed: BUG: scheduling while atomic in rcu_boost_kthread 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 rcu_boost_kthread, types: [ATOMIC_SLEEP] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP HANG], they are not needed testing commit 92432f07d6635531a982c0d4c7ea1274915aac67 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building 92432f07d6635531a982c0d4c7ea1274915aac67: net/socket.c:1242: undefined reference to `wext_handle_ioctl' net/socket.c:3437: undefined reference to `compat_wext_handle_ioctl' net/core/net-procfs.c:329: undefined reference to `wext_proc_init' net/core/net-procfs.c:345: undefined reference to `wext_proc_exit' minimized to 51 configs; suspects: [HID_ZEROPLUS USB_NET_DM9601 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_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 V4L2_ASYNC V4L2_FWNODE VIDEO_CAMERA_SENSOR WLAN WLAN_VENDOR_ATH WLAN_VENDOR_ATMEL WLAN_VENDOR_BROADCOM WLAN_VENDOR_INTERSIL WLAN_VENDOR_MARVELL WLAN_VENDOR_MEDIATEK WLAN_VENDOR_MICROCHIP WLAN_VENDOR_PURELIFI WLAN_VENDOR_RALINK WLAN_VENDOR_REALTEK WLAN_VENDOR_RSI WLAN_VENDOR_SILABS WLAN_VENDOR_ZYDAS X86_X32_ABI ZEROPLUS_FF] disabling configs for [KASAN LOCKDEP HANG LEAK UBSAN BUG], they are not needed testing current HEAD a8b3ebe7f90afe0ad0d9a8b0b90f266da06a7007 testing commit a8b3ebe7f90afe0ad0d9a8b0b90f266da06a7007 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b7569e728950f5080a9b285fa08b8c9b0c932a05f44b42aeff851058779c315a run #0: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #1: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #2: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #3: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #4: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #5: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #6: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #7: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #8: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #9: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #10: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #11: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #12: crashed: BUG: scheduling while atomic in rcu_boost_kthread run #13: crashed: BUG: scheduling while atomic in rcu_boost_kthread 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 rcu_boost_kthread, 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: 1h46m13.443368251s (build: 18m4.305034612s, test: 1h25m41.52994309s) crash still not fixed or there were kernel test errors commit msg: ANDROID: 16K: Avoid mmap lock assertions for padding VMAs crash: BUG: scheduling while atomic in rcu_boost_kthread BUG: scheduling while atomic: rcub/0/15/0x00000002 Modules linked in: Preemption disabled at: [] rt_mutex_slowlock_block+0x7f/0x220 kernel/locking/rtmutex.c:1570 CPU: 0 PID: 15 Comm: rcub/0 Not tainted 6.1.78-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x68/0x91 lib/dump_stack.c:106 dump_stack+0x10/0x19 lib/dump_stack.c:113 __schedule_bug+0xcf/0x100 kernel/sched/core.c:5975 schedule_debug kernel/sched/core.c:6002 [inline] __schedule+0x4a9/0x6e0 kernel/sched/core.c:6637 schedule+0x54/0xc0 kernel/sched/core.c:6820 rcu_boost_kthread+0x75/0x300 kernel/rcu/tree_plugin.h:1120 kthread+0xda/0xf0 kernel/kthread.c:386 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306