ci2 starts bisection 2026-09-13 16:16:57.553474387 +0000 UTC m=+142080.549766742 bisecting fixing commit since 1b32327554da96311b5979fd4eaa5eff94dd1531 building syzkaller on 81fb92f382d05aa9fb9878696840b9711b38ba20 ensuring issue is reproducible on original commit 1b32327554da96311b5979fd4eaa5eff94dd1531 testing commit 1b32327554da96311b5979fd4eaa5eff94dd1531 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: bac30c9daf21c60e6f6e98d0d6f14100de47845492efc68f4a64e7c1ecc12507 all runs: 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 1b32327554da96311b5979fd4eaa5eff94dd1531 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 7be8c3101ef1de37825e1fdf6b484fb523d0bf2d531e8ecb48c31079bb9e35d7 all runs: 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 [kasan locking hang memleak ubsan bug_or_warning], they are not needed kconfig minimization: base=4788 full=6024 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 [kasan locking hang memleak ubsan bug_or_warning], they are not needed testing commit 1b32327554da96311b5979fd4eaa5eff94dd1531 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 88bd8bc9ee673fa6a27f6fd7ba18544cd579dbc0467c58480e651d61e65dddec all runs: 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 2/5 disabling configs for [memleak ubsan bug_or_warning kasan locking hang], they are not needed testing commit 1b32327554da96311b5979fd4eaa5eff94dd1531 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: b1fdb0468e5609b02c34cc36ec68aaedeb76fbb002b8cc30b74f388a5cb71285 all runs: 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 3/5 disabling configs for [bug_or_warning kasan locking hang memleak ubsan], they are not needed testing commit 1b32327554da96311b5979fd4eaa5eff94dd1531 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: aa50213a2383a1d727ea798a124595efa36fae668eea9302899706f355dbe255 all runs: 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 [memleak ubsan bug_or_warning kasan locking hang], they are not needed testing commit 1b32327554da96311b5979fd4eaa5eff94dd1531 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 4de8df9e76619705266a432a374b088bdb912ad32a27e53c67a7f96d09153694 all runs: 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 5/5 disabling configs for [hang memleak ubsan bug_or_warning kasan locking], they are not needed testing commit 1b32327554da96311b5979fd4eaa5eff94dd1531 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 failed building 1b32327554da96311b5979fd4eaa5eff94dd1531: net/socket.c:1128:(.text+0x817): undefined reference to `wext_handle_ioctl' net/socket.c:3397:(.text+0xa08): undefined reference to `compat_wext_handle_ioctl' net/core/net-procfs.c:346:(.text+0x109): undefined reference to `wext_proc_exit' net/core/net-procfs.c:330:(.text+0x1e4): 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 [hang memleak ubsan bug_or_warning kasan locking], they are not needed testing current HEAD 452567d1985b87b56468536292b8eccd299a6c4b testing commit 452567d1985b87b56468536292b8eccd299a6c4b gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: f6ba662f5a0e764f18c410978c42b0d9c08416d052e21068cb5d49d1dda49b70 all runs: 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: 2h19m8.084490513s (build: 1h8m37.486488711s, test: 57m37.929769975s) crash still not fixed or there were kernel test errors commit msg: Revert "HID: input: read battery capacity from its actual report offset" crash: BUG: scheduling while atomic in exit_to_user_mode_prepare erofs: (device loop2): mounted with root inode @ nid 36. erofs: (device loop2): z_erofs_readpage: failed to read, err [-117] erofs: (device loop2): erofs_readdir: fail to readdir of logical block 144 of nid 36 BUG: scheduling while atomic: syz.2.17/480/0x00000002 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: 0 PID: 480 Comm: syz.2.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 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: 0033:0x7f1b482d5e59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1b48138028 EFLAGS: 00000246 ORIG_RAX: 000000000000004e RAX: ffffffffffffff8b RBX: 00007f1b4854efa0 RCX: 00007f1b482d5e59 RDX: 0000000000000058 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007f1b4836bd6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f1b4854f038 R14: 00007f1b4854efa0 R15: 00007ffd58baa878