ci2 starts bisection 2026-08-25 09:46:12.167241475 +0000 UTC m=+38327.090886928 bisecting fixing commit since 50b3a256e550e98ff6a49d32e77fb67998707961 building syzkaller on de6a700d843f1eae454018bc5041e06c62737db6 ensuring issue is reproducible on original commit 50b3a256e550e98ff6a49d32e77fb67998707961 testing commit 50b3a256e550e98ff6a49d32e77fb67998707961 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 26100d71467ef229835f85109283a2727d20f1e1d4426ac05a5fddaef54998a5 all runs: crashed: BUG: scheduling while atomic in wait_on_page_bit_common representative crash: BUG: scheduling while atomic in wait_on_page_bit_common, types: [ATOMIC_SLEEP] check whether we can drop unnecessary instrumentation disabling configs for [hang memleak ubsan bug_or_warning kasan locking], they are not needed testing commit 50b3a256e550e98ff6a49d32e77fb67998707961 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 5d54335d38619bdd837b61966070a8c4b98bb2f6cb38d5e181012db9da19f5fa all runs: crashed: BUG: scheduling while atomic in wait_on_page_bit_common representative crash: BUG: scheduling while atomic in wait_on_page_bit_common, 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=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 50b3a256e550e98ff6a49d32e77fb67998707961 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: fc06cd3b7528f0a9626f86d957dcf014b6eea6429228cc76323f7d5c454796f8 all runs: crashed: BUG: scheduling while atomic in wait_on_page_bit_common representative crash: BUG: scheduling while atomic in wait_on_page_bit_common, 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 50b3a256e550e98ff6a49d32e77fb67998707961 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 61b4e76e2ac8e5d474738210fd07fdf5e47f1072f98f00edd2604b0f29bcdba0 all runs: crashed: BUG: scheduling while atomic in wait_on_page_bit_common representative crash: BUG: scheduling while atomic in wait_on_page_bit_common, types: [ATOMIC_SLEEP] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [hang memleak ubsan bug_or_warning kasan locking], they are not needed testing commit 50b3a256e550e98ff6a49d32e77fb67998707961 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: a260a819bb11182ae2484c60a39d3ed23ea99ac059714ddd5db821d21406514e all runs: crashed: BUG: scheduling while atomic in wait_on_page_bit_common representative crash: BUG: scheduling while atomic in wait_on_page_bit_common, types: [ATOMIC_SLEEP] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [kasan locking hang memleak ubsan bug_or_warning], they are not needed testing commit 50b3a256e550e98ff6a49d32e77fb67998707961 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: c40a89a0ca555295385bc7e47a1332ba82519b4ecafdfcbfd18bf2484169b424 all runs: crashed: BUG: scheduling while atomic in wait_on_page_bit_common representative crash: BUG: scheduling while atomic in wait_on_page_bit_common, types: [ATOMIC_SLEEP] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [memleak ubsan bug_or_warning kasan locking hang], they are not needed testing commit 50b3a256e550e98ff6a49d32e77fb67998707961 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 failed building 50b3a256e550e98ff6a49d32e77fb67998707961: net/socket.c:1129:(.text+0x817): undefined reference to `wext_handle_ioctl' net/socket.c:3398:(.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 f01343e230a39702e6bab24215cb24d2e9b385d3 testing commit f01343e230a39702e6bab24215cb24d2e9b385d3 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 3345cc017e44d2d89e27ed34444e8d1a43299f2033a52b2fa2fbaf65a76cc1cd all runs: crashed: BUG: scheduling while atomic in wait_on_page_bit_common representative crash: BUG: scheduling while atomic in wait_on_page_bit_common, types: [ATOMIC_SLEEP] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 1h56m32.961047329s (build: 33m56.187751502s, test: 1h6m38.221343603s) 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 wait_on_page_bit_common erofs: (device loop2): z_erofs_readahead: readahead error at page 2 @ nid 89 erofs: (device loop2): z_erofs_get_extent_compressedlen: cannot found CBLKCNT @ lcn 1 of nid 89 erofs: (device loop2): z_erofs_readahead: readahead error at page 1 @ nid 89 BUG: scheduling while atomic: syz.2.17/490/0x00000002 Modules linked in: Preemption disabled at: [] kmap_atomic include/linux/highmem.h:156 [inline] [] z_erofs_reload_indexes+0x12f/0x1a0 fs/erofs/zmap.c:132 CPU: 0 PID: 490 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 io_schedule+0x41/0x70 kernel/sched/core.c:6593 wait_on_page_bit_common+0x117/0x3f0 mm/filemap.c:1282 wait_on_page_bit_killable mm/filemap.c:1350 [inline] wait_on_page_locked_killable include/linux/pagemap.h:679 [inline] generic_file_buffered_read+0x651/0xa10 mm/filemap.c:2284 generic_file_read_iter+0xbd/0x120 mm/filemap.c:2568 call_read_iter include/linux/fs.h:2060 [inline] new_sync_read+0x102/0x180 fs/read_write.c:415 vfs_read+0x12f/0x190 fs/read_write.c:496 ksys_read+0x62/0xe0 fs/read_write.c:634 __do_sys_read fs/read_write.c:644 [inline] __se_sys_read fs/read_write.c:642 [inline] __x64_sys_read+0x15/0x20 fs/read_write.c:642 do_syscall_64+0x32/0x50 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f5acb04ae99 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:00007f5acaeac028 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007f5acb2d2fa0 RCX: 00007f5acb04ae99 RDX: 0000000000002020 RSI: 0000200000000940 RDI: 0000000000000004 RBP: 00007f5acb0e0eaf R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f5acb2d3038 R14: 00007f5acb2d2fa0 R15: 00007ffe3f2ae4f8