ci2 starts bisection 2025-11-24 20:12:35.10655904 +0000 UTC m=+30320.662456605 bisecting fixing commit since 911f602c2237b4e5cad1e1f53bfcf6190a37a764 building syzkaller on e2beed91937c0ace342f19a2e9afb67adb3a828a ensuring issue is reproducible on original commit 911f602c2237b4e5cad1e1f53bfcf6190a37a764 testing commit 911f602c2237b4e5cad1e1f53bfcf6190a37a764 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c38c1d418bb61bba534edb0c33e75e3b34a951c0985c623b56b84af1b58e776f 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 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 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 futex_wait_queue_me run #11: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare run #12: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare 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: scheduling while atomic in exit_to_user_mode_prepare 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 [ubsan bug_or_warning kasan locking hang memleak], they are not needed testing commit 911f602c2237b4e5cad1e1f53bfcf6190a37a764 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: af9828df23256941744b55a854e67b8a342bad453b2250861cd3f97996045047 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 futex_wait_queue_me 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 futex_wait_queue_me run #7: crashed: BUG: scheduling while atomic in futex_wait_queue_me 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 [locking hang memleak ubsan bug_or_warning kasan], they are not needed kconfig minimization: base=4788 full=6026 leaves diff=248 split chunks (needed=false): <248> split chunk #0 of len 248 into 5 parts testing without sub-chunk 1/5 disabling configs for [ubsan bug_or_warning kasan locking hang memleak], they are not needed testing commit 911f602c2237b4e5cad1e1f53bfcf6190a37a764 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 83af08db893a9342aeb7f5e0f310febc9804c6310b1967d2cc2a3cfba4f93115 run #0: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare run #1: crashed: BUG: scheduling while atomic in futex_wait_queue_me 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 futex_wait_queue_me 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 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 futex_wait_queue_me representative crash: BUG: scheduling while atomic in exit_to_user_mode_prepare, types: [ATOMIC_SLEEP] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [hang memleak ubsan bug_or_warning kasan locking], they are not needed testing commit 911f602c2237b4e5cad1e1f53bfcf6190a37a764 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: dcc9373a6fe840c3914dc908dff3fff7a5c0a8b896d6c7835080860bf897a020 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 futex_wait_queue_me run #3: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare run #4: crashed: BUG: scheduling while atomic in futex_wait_queue_me 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 futex_wait_queue_me run #8: crashed: BUG: scheduling while atomic in exit_to_user_mode_prepare run #9: crashed: BUG: scheduling while atomic in futex_wait_queue_me representative crash: BUG: scheduling while atomic in exit_to_user_mode_prepare, types: [ATOMIC_SLEEP] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [ubsan bug_or_warning kasan locking hang memleak], they are not needed testing commit 911f602c2237b4e5cad1e1f53bfcf6190a37a764 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cabc27ef149d37cb919c4ad0a33039d877094bbdaa0c5b76c55035852aa0afb4 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 futex_wait_queue_me 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 chunk can be dropped testing without sub-chunk 4/5 disabling configs for [locking hang memleak ubsan bug_or_warning kasan], they are not needed testing commit 911f602c2237b4e5cad1e1f53bfcf6190a37a764 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f480413cf0b665778fdc53bac9a3168739d484d5a8542ae8de860750298f04bb run #0: crashed: BUG: scheduling while atomic in futex_wait_queue_me 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 futex_wait_queue_me 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 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 futex_wait_queue_me representative crash: BUG: scheduling while atomic in futex_wait_queue_me, types: [ATOMIC_SLEEP] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [kasan locking hang memleak ubsan bug_or_warning], they are not needed testing commit 911f602c2237b4e5cad1e1f53bfcf6190a37a764 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 failed building 911f602c2237b4e5cad1e1f53bfcf6190a37a764: net/socket.c:1128: undefined reference to `wext_handle_ioctl' net/socket.c:3397: undefined reference to `compat_wext_handle_ioctl' net/core/net-procfs.c:346: undefined reference to `wext_proc_exit' net/core/net-procfs.c:330: undefined reference to `wext_proc_init' minimized to 48 configs; suspects: [HID_ZEROPLUS USB_NET_CDC_SUBSET USB_NET_CDC_SUBSET_ENABLE 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 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 USB_XHCI_PCI_RENESAS 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 ZEROPLUS_FF] disabling configs for [ubsan bug_or_warning kasan locking hang memleak], they are not needed testing current HEAD 9286af17ed5fa9f8cfcf84d6f1c7076790bfe794 testing commit 9286af17ed5fa9f8cfcf84d6f1c7076790bfe794 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9ee122ce93b8a8486cfc0ad324d0458d7465a19bf14b8fcf18e304a66f9e3db1 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 futex_wait_queue_me 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 futex_wait_queue_me 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] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 1h31m19.628016013s (build: 1h4m31.818941027s, test: 25m33.765548295s) crash still not fixed or there were kernel test errors commit msg: Merge android13-5.10 into android13-5.10-lts crash: BUG: scheduling while atomic in exit_to_user_mode_prepare erofs: (device loop2): mounted with root inode @ nid 36. BUG: scheduling while atomic: syz.2.17/456/0x00000002 Modules linked in: Preemption disabled at: [] kmap_atomic include/linux/highmem.h:156 [inline] [] z_erofs_reload_indexes+0xbd/0x1a0 fs/erofs/zmap.c:148 CPU: 1 PID: 456 Comm: syz.2.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack_lvl+0x5d/0x75 lib/dump_stack.c:118 dump_stack+0x10/0x12 lib/dump_stack.c:135 __schedule_bug.cold+0x83/0xae kernel/sched/core.c:4545 schedule_debug kernel/sched/core.c:4572 [inline] __schedule+0x67f/0x730 kernel/sched/core.c:4700 schedule+0x49/0xe0 kernel/sched/core.c:4884 exit_to_user_mode_loop kernel/entry/common.c:160 [inline] exit_to_user_mode_prepare+0xe0/0x160 kernel/entry/common.c:199 syscall_exit_to_user_mode+0x27/0x160 kernel/entry/common.c:274 do_syscall_64+0x3f/0x50 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f5a0a142ba9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f5a09fb30e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000001 RBX: 00007f5a0a389fa8 RCX: 00007f5a0a142ba9 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f5a0a389fac RBP: 00007f5a0a389fa0 R08: 00007ffc69961080 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007f5a0a38a038 R14: 00007ffc69875780 R15: 00007ffc69875868