ci2 starts bisection 2024-05-25 06:40:26.815835916 +0000 UTC m=+47035.676803841 bisecting fixing commit since ea2937bdd12f6ebc51e6698c5696a1b16507999b building syzkaller on 551587c192ecb4df26fcdab775ed145ee69c07d4 ensuring issue is reproducible on original commit ea2937bdd12f6ebc51e6698c5696a1b16507999b testing commit ea2937bdd12f6ebc51e6698c5696a1b16507999b gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f72382b057c017c0c020c6c3cad43ed40e29631de30a2e562ee528d5b24be87d run #0: crashed: KASAN: use-after-free Read in process_one_work run #1: crashed: KASAN: use-after-free Read in process_one_work run #2: crashed: KASAN: use-after-free Read in move_linked_works run #3: crashed: KASAN: use-after-free Read in worker_thread run #4: crashed: KASAN: use-after-free Read in worker_thread run #5: crashed: KASAN: use-after-free Read in worker_thread run #6: crashed: KASAN: use-after-free Read in process_one_work run #7: crashed: KASAN: use-after-free Read in worker_thread run #8: crashed: KASAN: use-after-free Read in process_one_work run #9: crashed: KASAN: use-after-free Read in worker_thread run #10: crashed: KASAN: use-after-free Read in process_one_work run #11: crashed: KASAN: use-after-free Read in worker_thread run #12: crashed: KASAN: use-after-free Read in process_one_work run #13: crashed: KASAN: use-after-free Read in worker_thread run #14: crashed: KASAN: use-after-free Read in worker_thread run #15: crashed: KASAN: use-after-free Read in process_one_work run #16: crashed: KASAN: use-after-free Read in process_one_work run #17: crashed: KASAN: use-after-free Read in process_one_work run #18: crashed: KASAN: use-after-free Read in worker_thread run #19: crashed: KASAN: use-after-free Read in worker_thread representative crash: KASAN: use-after-free Read in process_one_work, types: [KASAN] check whether we can drop unnecessary instrumentation disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit ea2937bdd12f6ebc51e6698c5696a1b16507999b gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e9919c08dd232de701bc88784792e46facc7a09cfa864f58625867675a062244 run #0: crashed: KASAN: use-after-free Read in process_one_work run #1: crashed: KASAN: use-after-free Read in process_one_work run #2: crashed: KASAN: use-after-free Read in process_one_work run #3: crashed: KASAN: use-after-free Read in process_one_work run #4: crashed: KASAN: use-after-free Read in process_one_work run #5: crashed: KASAN: use-after-free Read in process_one_work run #6: crashed: KASAN: use-after-free Read in worker_thread run #7: crashed: KASAN: use-after-free Read in process_one_work run #8: crashed: KASAN: use-after-free Read in worker_thread run #9: crashed: KASAN: use-after-free Read in worker_thread representative crash: KASAN: use-after-free Read in process_one_work, types: [KASAN] the bug reproduces without the instrumentation disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG LOCKDEP], they are not needed kconfig minimization: base=4920 full=6161 leaves diff=241 split chunks (needed=false): <241> split chunk #0 of len 241 into 5 parts testing without sub-chunk 1/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit ea2937bdd12f6ebc51e6698c5696a1b16507999b gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 85caf551c9e56f5df5e3e154c7d60fa44f0c30d6cfa14c783077df474a141d7e run #0: crashed: KASAN: use-after-free Read in worker_thread run #1: crashed: KASAN: use-after-free Read in worker_thread run #2: crashed: KASAN: use-after-free Read in worker_thread run #3: crashed: KASAN: use-after-free Read in worker_thread run #4: crashed: KASAN: use-after-free Read in worker_thread run #5: crashed: KASAN: use-after-free Read in process_one_work run #6: crashed: KASAN: use-after-free Read in worker_thread run #7: crashed: KASAN: use-after-free Read in worker_thread run #8: crashed: KASAN: use-after-free Read in process_one_work run #9: crashed: KASAN: use-after-free Read in process_one_work representative crash: KASAN: use-after-free Read in worker_thread, types: [KASAN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed testing commit ea2937bdd12f6ebc51e6698c5696a1b16507999b gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 26667af3f883e96dfc1e9c11d653c4dc328a89a329570cc312f2fa410bb012c2 run #0: crashed: KASAN: use-after-free Read in worker_thread run #1: crashed: KASAN: use-after-free Read in worker_thread run #2: crashed: KASAN: use-after-free Read in worker_thread run #3: crashed: KASAN: use-after-free Read in process_one_work run #4: crashed: KASAN: use-after-free Read in worker_thread run #5: crashed: KASAN: use-after-free Read in process_one_work run #6: crashed: KASAN: use-after-free Read in process_one_work run #7: crashed: KASAN: use-after-free Read in worker_thread run #8: crashed: KASAN: use-after-free Read in process_one_work run #9: crashed: KASAN: use-after-free Read in process_one_work representative crash: KASAN: use-after-free Read in worker_thread, types: [KASAN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed testing commit ea2937bdd12f6ebc51e6698c5696a1b16507999b gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c34c9c8b50ccccea77e6ca2a3fd2faf1f8f9aa7256661710fae046d385dadac7 run #0: crashed: KASAN: use-after-free Read in process_one_work run #1: crashed: KASAN: use-after-free Read in worker_thread run #2: crashed: KASAN: use-after-free Read in process_one_work run #3: crashed: KASAN: use-after-free Read in worker_thread run #4: crashed: KASAN: use-after-free Read in process_one_work run #5: crashed: KASAN: use-after-free Read in process_one_work run #6: crashed: KASAN: use-after-free Read in worker_thread run #7: crashed: KASAN: use-after-free Read in worker_thread run #8: crashed: KASAN: use-after-free Read in worker_thread run #9: crashed: KASAN: use-after-free Read in process_one_work representative crash: KASAN: use-after-free Read in process_one_work, types: [KASAN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG LOCKDEP], they are not needed testing commit ea2937bdd12f6ebc51e6698c5696a1b16507999b gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2a2403953772e82ae274174c5ec043b000bbe21957a2525824f676804848c0d3 run #0: crashed: KASAN: use-after-free Read in worker_thread run #1: crashed: KASAN: use-after-free Read in worker_thread run #2: crashed: KASAN: use-after-free Read in worker_thread run #3: crashed: KASAN: use-after-free Read in worker_thread run #4: crashed: KASAN: use-after-free Read in process_one_work run #5: crashed: KASAN: use-after-free Read in process_one_work run #6: crashed: KASAN: use-after-free Read in worker_thread run #7: crashed: KASAN: use-after-free Read in process_one_work run #8: crashed: KASAN: use-after-free Read in worker_thread run #9: crashed: KASAN: use-after-free Read in process_one_work representative crash: KASAN: use-after-free Read in worker_thread, types: [KASAN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed testing commit ea2937bdd12f6ebc51e6698c5696a1b16507999b gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 failed building ea2937bdd12f6ebc51e6698c5696a1b16507999b: net/socket.c:1189: undefined reference to `wext_handle_ioctl' net/socket.c:3383: 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 45 configs; suspects: [HID_ZEROPLUS 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 [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing current HEAD 424f92bcbe8fa613ada7aec5ebe4ef434d5e50e4 testing commit 424f92bcbe8fa613ada7aec5ebe4ef434d5e50e4 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5493b215955c63e70d0ebbe38a64e7a3868b4dd7db59def31fa6867b6b111343 run #0: crashed: KASAN: use-after-free Read in process_one_work run #1: crashed: KASAN: use-after-free Read in worker_thread run #2: crashed: KASAN: use-after-free Read in worker_thread run #3: crashed: KASAN: use-after-free Read in worker_thread run #4: crashed: KASAN: use-after-free Read in process_one_work run #5: crashed: KASAN: use-after-free Read in process_one_work run #6: crashed: KASAN: use-after-free Read in worker_thread run #7: crashed: KASAN: use-after-free Read in worker_thread run #8: crashed: KASAN: use-after-free Read in worker_thread run #9: crashed: KASAN: use-after-free Read in process_one_work representative crash: KASAN: use-after-free Read in process_one_work, types: [KASAN] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 1h3m47.81784658s (build: 19m30.583454532s, test: 42m35.042081613s) crash still not fixed or there were kernel test errors commit msg: Merge branch 'android13-5.15' into branch 'android13-5.15-lts' crash: KASAN: use-after-free Read in process_one_work ================================================================== BUG: KASAN: use-after-free in __list_del_entry_valid+0xf0/0x110 lib/list_debug.c:62 Read of size 8 at addr ffff88810e47cc70 by task kworker/1:0/25 CPU: 1 PID: 25 Comm: kworker/1:0 Not tainted 5.15.149-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Workqueue: mm_percpu_wq vmstat_update Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x38/0x49 lib/dump_stack.c:106 print_address_description.constprop.0+0x24/0x160 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:427 [inline] kasan_report.cold+0x82/0xdb mm/kasan/report.c:444 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309 __list_del_entry_valid+0xf0/0x110 lib/list_debug.c:62 __list_del_entry include/linux/list.h:132 [inline] list_del_init include/linux/list.h:204 [inline] process_one_work+0x3ba/0xec0 kernel/workqueue.c:2269 worker_thread+0x48e/0xdb0 kernel/workqueue.c:2472 kthread+0x324/0x3e0 kernel/kthread.c:337 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 Allocated by task 385: kasan_save_stack+0x26/0x50 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:45 [inline] set_alloc_info mm/kasan/common.c:433 [inline] ____kasan_kmalloc mm/kasan/common.c:512 [inline] ____kasan_kmalloc mm/kasan/common.c:471 [inline] __kasan_kmalloc+0xae/0xe0 mm/kasan/common.c:521 kasan_kmalloc include/linux/kasan.h:227 [inline] __kmalloc+0x2d5/0x4e0 mm/slub.c:4427 __kmalloc_node include/linux/slab.h:469 [inline] kmalloc_node include/linux/slab.h:626 [inline] kvmalloc_node+0xee/0x240 mm/util.c:628 kvmalloc include/linux/mm.h:851 [inline] kvzalloc include/linux/mm.h:859 [inline] alloc_netdev_mqs+0x5e/0xd70 net/core/dev.c:10855 alloc_etherdev_mqs+0x1f/0x30 net/ethernet/eth.c:393 usbnet_probe+0x199/0x24d0 drivers/net/usb/usbnet.c:1694 usb_probe_interface+0x257/0x640 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:516 [inline] really_probe.part.0+0x5c6/0x7b0 drivers/base/dd.c:595 really_probe drivers/base/dd.c:557 [inline] __driver_probe_device+0x1b4/0x320 drivers/base/dd.c:755 driver_probe_device+0x49/0x120 drivers/base/dd.c:785 __device_attach_driver+0x156/0x220 drivers/base/dd.c:907 bus_for_each_drv+0x127/0x1c0 drivers/base/bus.c:427 __device_attach+0x28e/0x490 drivers/base/dd.c:979 device_initial_probe+0xe/0x10 drivers/base/dd.c:1028 bus_probe_device+0x19e/0x240 drivers/base/bus.c:487 device_add+0x9bc/0x1c90 drivers/base/core.c:3404 usb_set_configuration+0x9c9/0x14f0 drivers/usb/core/message.c:2165 usb_generic_driver_probe+0x7d/0xb0 drivers/usb/core/generic.c:238 usb_probe_device+0x9c/0x220 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:516 [inline] really_probe.part.0+0x5c6/0x7b0 drivers/base/dd.c:595 really_probe drivers/base/dd.c:557 [inline] __driver_probe_device+0x1b4/0x320 drivers/base/dd.c:755 driver_probe_device+0x49/0x120 drivers/base/dd.c:785 __device_attach_driver+0x156/0x220 drivers/base/dd.c:907 bus_for_each_drv+0x127/0x1c0 drivers/base/bus.c:427 __device_attach+0x28e/0x490 drivers/base/dd.c:979 device_initial_probe+0xe/0x10 drivers/base/dd.c:1028 bus_probe_device+0x19e/0x240 drivers/base/bus.c:487 device_add+0x9bc/0x1c90 drivers/base/core.c:3404 usb_new_device.cold+0x5f9/0xe6b drivers/usb/core/hub.c:2590 hub_port_connect drivers/usb/core/hub.c:5503 [inline] hub_port_connect_change drivers/usb/core/hub.c:5643 [inline] port_event drivers/usb/core/hub.c:5793 [inline] hub_event+0x20e0/0x36b0 drivers/usb/core/hub.c:5875 process_one_work+0x62c/0xec0 kernel/workqueue.c:2325 worker_thread+0x48e/0xdb0 kernel/workqueue.c:2472 kthread+0x324/0x3e0 kernel/kthread.c:337 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 Freed by task 385: kasan_save_stack+0x26/0x50 mm/kasan/common.c:38 kasan_set_track+0x25/0x30 mm/kasan/common.c:45 kasan_set_free_info+0x24/0x40 mm/kasan/generic.c:370 ____kasan_slab_free mm/kasan/common.c:365 [inline] ____kasan_slab_free mm/kasan/common.c:327 [inline] __kasan_slab_free+0x111/0x150 mm/kasan/common.c:373 kasan_slab_free include/linux/kasan.h:193 [inline] slab_free_hook mm/slub.c:1723 [inline] slab_free_freelist_hook+0x94/0x1a0 mm/slub.c:1749 slab_free mm/slub.c:3519 [inline] kfree+0xc2/0x260 mm/slub.c:4579 kvfree+0x25/0x30 mm/util.c:664 netdev_freemem+0x47/0x60 net/core/dev.c:10809 netdev_release+0x68/0x80 net/core/net-sysfs.c:1903 device_release+0x9d/0x1a0 drivers/base/core.c:2240 kobject_cleanup+0xb5/0x180 lib/kobject.c:713 kobject_release lib/kobject.c:744 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x45/0x60 lib/kobject.c:761 put_device+0xe/0x20 drivers/base/core.c:3512 free_netdev+0x30b/0x490 net/core/dev.c:10995 usbnet_disconnect+0x244/0x2d0 drivers/net/usb/usbnet.c:1633 ax88179_disconnect+0x87/0xb0 drivers/net/usb/ax88179_178a.c:534 usb_unbind_interface+0x185/0x7b0 drivers/usb/core/driver.c:458 __device_release_driver+0x5ae/0x700 drivers/base/dd.c:1229 device_release_driver_internal drivers/base/dd.c:1262 [inline] device_release_driver+0x24/0x40 drivers/base/dd.c:1285 bus_remove_device+0x2a9/0x470 drivers/base/bus.c:529 device_del+0x507/0xbd0 drivers/base/core.c:3592 usb_disable_device+0x26d/0x500 drivers/usb/core/message.c:1414 usb_disconnect.cold+0x1e7/0x651 drivers/usb/core/hub.c:2240 hub_port_connect drivers/usb/core/hub.c:5342 [inline] hub_port_connect_change drivers/usb/core/hub.c:5643 [inline] port_event drivers/usb/core/hub.c:5793 [inline] hub_event+0x13a6/0x36b0 drivers/usb/core/hub.c:5875 process_one_work+0x62c/0xec0 kernel/workqueue.c:2325 process_scheduled_works kernel/workqueue.c:2388 [inline] worker_thread+0x5f7/0xdb0 kernel/workqueue.c:2474 kthread+0x324/0x3e0 kernel/kthread.c:337 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 Last potentially related work creation: kasan_save_stack+0x26/0x50 mm/kasan/common.c:38 __kasan_record_aux_stack+0xd8/0xf0 mm/kasan/generic.c:348 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358 insert_work+0x48/0x320 kernel/workqueue.c:1373 __queue_work+0x42b/0xba0 kernel/workqueue.c:1539 queue_work_on+0x4c/0x60 kernel/workqueue.c:1566 queue_work include/linux/workqueue.h:510 [inline] schedule_work include/linux/workqueue.h:571 [inline] usbnet_defer_kevent drivers/net/usb/usbnet.c:471 [inline] usbnet_link_change+0xb1/0x130 drivers/net/usb/usbnet.c:1996 ax88179_reset+0x765/0x9e0 drivers/net/usb/ax88179_178a.c:1694 ax88179_bind+0x36a/0x430 drivers/net/usb/ax88179_178a.c:1342 usbnet_probe+0xbbc/0x24d0 drivers/net/usb/usbnet.c:1746 usb_probe_interface+0x257/0x640 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:516 [inline] really_probe.part.0+0x5c6/0x7b0 drivers/base/dd.c:595 really_probe drivers/base/dd.c:557 [inline] __driver_probe_device+0x1b4/0x320 drivers/base/dd.c:755 driver_probe_device+0x49/0x120 drivers/base/dd.c:785 __device_attach_driver+0x156/0x220 drivers/base/dd.c:907 bus_for_each_drv+0x127/0x1c0 drivers/base/bus.c:427 __device_attach+0x28e/0x490 drivers/base/dd.c:979 device_initial_probe+0xe/0x10 drivers/base/dd.c:1028 bus_probe_device+0x19e/0x240 drivers/base/bus.c:487 device_add+0x9bc/0x1c90 drivers/base/core.c:3404 usb_set_configuration+0x9c9/0x14f0 drivers/usb/core/message.c:2165 usb_generic_driver_probe+0x7d/0xb0 drivers/usb/core/generic.c:238 usb_probe_device+0x9c/0x220 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:516 [inline] really_probe.part.0+0x5c6/0x7b0 drivers/base/dd.c:595 really_probe drivers/base/dd.c:557 [inline] __driver_probe_device+0x1b4/0x320 drivers/base/dd.c:755 driver_probe_device+0x49/0x120 drivers/base/dd.c:785 __device_attach_driver+0x156/0x220 drivers/base/dd.c:907 bus_for_each_drv+0x127/0x1c0 drivers/base/bus.c:427 __device_attach+0x28e/0x490 drivers/base/dd.c:979 device_initial_probe+0xe/0x10 drivers/base/dd.c:1028 bus_probe_device+0x19e/0x240 drivers/base/bus.c:487 device_add+0x9bc/0x1c90 drivers/base/core.c:3404 usb_new_device.cold+0x5f9/0xe6b drivers/usb/core/hub.c:2590 hub_port_connect drivers/usb/core/hub.c:5503 [inline] hub_port_connect_change drivers/usb/core/hub.c:5643 [inline] port_event drivers/usb/core/hub.c:5793 [inline] hub_event+0x20e0/0x36b0 drivers/usb/core/hub.c:5875 process_one_work+0x62c/0xec0 kernel/workqueue.c:2325 worker_thread+0x48e/0xdb0 kernel/workqueue.c:2472 kthread+0x324/0x3e0 kernel/kthread.c:337 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 The buggy address belongs to the object at ffff88810e47c000 which belongs to the cache kmalloc-4k of size 4096 The buggy address is located 3184 bytes inside of 4096-byte region [ffff88810e47c000, ffff88810e47d000) The buggy address belongs to the page: page:ffffea0004391e00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10e478 head:ffffea0004391e00 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x4000000000010200(slab|head|zone=1) raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043380 raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 107, ts 3814633563, free_ts 0 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook mm/page_alloc.c:2604 [inline] prep_new_page+0x1a2/0x310 mm/page_alloc.c:2610 get_page_from_freelist+0x1ce2/0x30a0 mm/page_alloc.c:4484 __alloc_pages+0x2d1/0x2620 mm/page_alloc.c:5776 __alloc_pages_node include/linux/gfp.h:591 [inline] alloc_pages_node include/linux/gfp.h:605 [inline] alloc_pages include/linux/gfp.h:618 [inline] alloc_slab_page mm/slub.c:1793 [inline] allocate_slab+0x39d/0x530 mm/slub.c:1932 new_slab mm/slub.c:1995 [inline] ___slab_alloc.constprop.0+0x3ca/0x890 mm/slub.c:3028 __slab_alloc.constprop.0+0x42/0x80 mm/slub.c:3115 slab_alloc_node mm/slub.c:3206 [inline] slab_alloc mm/slub.c:3248 [inline] kmem_cache_alloc_trace+0x456/0x490 mm/slub.c:3265 kmalloc include/linux/slab.h:603 [inline] kzalloc include/linux/slab.h:733 [inline] kernfs_iop_get_link fs/kernfs/symlink.c:136 [inline] kernfs_iop_get_link+0x5d/0x620 fs/kernfs/symlink.c:127 vfs_readlink+0x1ae/0x430 fs/namei.c:5081 do_readlinkat+0x1fd/0x2b0 fs/stat.c:454 __do_sys_readlink fs/stat.c:475 [inline] __se_sys_readlink fs/stat.c:472 [inline] __x64_sys_readlink+0x73/0xb0 fs/stat.c:472 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb page_owner free stack trace missing Memory state around the buggy address: ffff88810e47cb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88810e47cb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88810e47cc00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88810e47cc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88810e47cd00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================