netdevsim netdevsim0: Direct firmware load for ./file0 failed with error -2 netdevsim netdevsim0: Falling back to sysfs fallback for: ./file0 ================================================================== BUG: KASAN: invalid-access in __list_add_valid+0x10/0x90 lib/list_debug.c:22 Read at addr faff000023971690 by task syz-executor.0/9788 Pointer tag: [fa], memory tag: [fe] CPU: 1 PID: 9788 Comm: syz-executor.0 Not tainted 5.14.0-rc3-syzkaller #0 Hardware name: linux,dummy-virt (DT) Call trace: dump_backtrace+0x0/0x1b0 arch/arm64/kernel/stacktrace.c:76 show_stack+0x18/0x24 arch/arm64/kernel/stacktrace.c:215 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x68/0x84 lib/dump_stack.c:105 print_address_description+0x7c/0x2b4 mm/kasan/report.c:233 __kasan_report mm/kasan/report.c:419 [inline] kasan_report+0x134/0x380 mm/kasan/report.c:436 report_tag_fault arch/arm64/mm/fault.c:330 [inline] do_tag_recovery arch/arm64/mm/fault.c:342 [inline] __do_kernel_fault+0x1a8/0x1dc arch/arm64/mm/fault.c:383 do_bad_area arch/arm64/mm/fault.c:479 [inline] do_tag_check_fault+0x74/0x90 arch/arm64/mm/fault.c:750 do_mem_abort+0x44/0xb4 arch/arm64/mm/fault.c:826 el1_abort+0x40/0x60 arch/arm64/kernel/entry-common.c:243 el1h_64_sync_handler+0xb0/0xd0 arch/arm64/kernel/entry-common.c:318 el1h_64_sync+0x78/0x7c arch/arm64/kernel/entry.S:569 __list_add_valid+0x10/0x90 lib/list_debug.c:22 __list_add include/linux/list.h:67 [inline] list_add include/linux/list.h:86 [inline] fw_load_sysfs_fallback drivers/base/firmware_loader/fallback.c:516 [inline] fw_load_from_user_helper drivers/base/firmware_loader/fallback.c:581 [inline] firmware_fallback_sysfs+0x1a4/0x460 drivers/base/firmware_loader/fallback.c:657 _request_firmware+0x28c/0x510 drivers/base/firmware_loader/main.c:833 request_firmware+0x48/0x70 drivers/base/firmware_loader/main.c:877 devlink_compat_flash_update+0x9c/0x1ec net/core/devlink.c:11226 ethtool_flash_device+0xf8/0x100 net/ethtool/ioctl.c:2072 dev_ethtool+0x590/0x2280 net/ethtool/ioctl.c:2765 dev_ioctl+0x4ec/0x5f0 net/core/dev_ioctl.c:440 sock_do_ioctl+0x114/0x2b0 net/socket.c:1117 sock_ioctl+0x28c/0x4a0 net/socket.c:1221 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:1069 [inline] __se_sys_ioctl fs/ioctl.c:1055 [inline] __arm64_sys_ioctl+0xa8/0xec fs/ioctl.c:1055 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x48/0x114 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x40/0xdc arch/arm64/kernel/syscall.c:145 do_el0_svc+0x78/0x90 arch/arm64/kernel/syscall.c:184 el0_svc+0x2c/0x54 arch/arm64/kernel/entry-common.c:511 el0t_64_sync_handler+0x1a4/0x1b0 arch/arm64/kernel/entry-common.c:527 el0t_64_sync+0x1b4/0x1b8 arch/arm64/kernel/entry.S:574 Allocated by task 9774: kasan_save_stack+0x28/0x60 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc mm/kasan/common.c:513 [inline] ____kasan_kmalloc mm/kasan/common.c:472 [inline] __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:522 kasan_kmalloc include/linux/kasan.h:264 [inline] kmem_cache_alloc_trace include/linux/slab.h:489 [inline] kmalloc include/linux/slab.h:591 [inline] kzalloc include/linux/slab.h:721 [inline] __allocate_fw_priv drivers/base/firmware_loader/main.c:187 [inline] alloc_lookup_fw_priv drivers/base/firmware_loader/main.c:251 [inline] _request_firmware_prepare drivers/base/firmware_loader/main.c:746 [inline] _request_firmware+0x180/0x510 drivers/base/firmware_loader/main.c:808 request_firmware+0x48/0x70 drivers/base/firmware_loader/main.c:877 devlink_compat_flash_update+0x9c/0x1ec net/core/devlink.c:11226 ethtool_flash_device+0xf8/0x100 net/ethtool/ioctl.c:2072 dev_ethtool+0x590/0x2280 net/ethtool/ioctl.c:2765 dev_ioctl+0x4ec/0x5f0 net/core/dev_ioctl.c:440 sock_do_ioctl+0x114/0x2b0 net/socket.c:1117 sock_ioctl+0x28c/0x4a0 net/socket.c:1221 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:1069 [inline] __se_sys_ioctl fs/ioctl.c:1055 [inline] __arm64_sys_ioctl+0xa8/0xec fs/ioctl.c:1055 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x48/0x114 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x40/0xdc arch/arm64/kernel/syscall.c:145 do_el0_svc+0x78/0x90 arch/arm64/kernel/syscall.c:184 el0_svc+0x2c/0x54 arch/arm64/kernel/entry-common.c:511 el0t_64_sync_handler+0x1a4/0x1b0 arch/arm64/kernel/entry-common.c:527 el0t_64_sync+0x1b4/0x1b8 arch/arm64/kernel/entry.S:574 Freed by task 9774: kasan_save_stack+0x28/0x60 mm/kasan/common.c:38 kasan_set_track+0x28/0x3c mm/kasan/common.c:46 kasan_set_free_info+0x20/0x30 mm/kasan/tags.c:36 ____kasan_slab_free.constprop.0+0x178/0x1e0 mm/kasan/common.c:366 __kasan_slab_free+0x10/0x1c mm/kasan/common.c:374 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1625 [inline] slab_free_freelist_hook+0xc4/0x220 mm/slub.c:1650 slab_free mm/slub.c:3210 [inline] kfree+0x2f4/0x43c mm/slub.c:4262 __free_fw_priv drivers/base/firmware_loader/main.c:283 [inline] kref_put include/linux/kref.h:65 [inline] free_fw_priv+0xe0/0x10c drivers/base/firmware_loader/main.c:290 firmware_free_data drivers/base/firmware_loader/main.c:586 [inline] release_firmware.part.0+0x50/0x74 drivers/base/firmware_loader/main.c:1055 release_firmware drivers/base/firmware_loader/main.c:842 [inline] _request_firmware+0x2c4/0x510 drivers/base/firmware_loader/main.c:841 request_firmware+0x48/0x70 drivers/base/firmware_loader/main.c:877 devlink_compat_flash_update+0x9c/0x1ec net/core/devlink.c:11226 ethtool_flash_device+0xf8/0x100 net/ethtool/ioctl.c:2072 dev_ethtool+0x590/0x2280 net/ethtool/ioctl.c:2765 dev_ioctl+0x4ec/0x5f0 net/core/dev_ioctl.c:440 sock_do_ioctl+0x114/0x2b0 net/socket.c:1117 sock_ioctl+0x28c/0x4a0 net/socket.c:1221 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:1069 [inline] __se_sys_ioctl fs/ioctl.c:1055 [inline] __arm64_sys_ioctl+0xa8/0xec fs/ioctl.c:1055 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x48/0x114 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x40/0xdc arch/arm64/kernel/syscall.c:145 do_el0_svc+0x78/0x90 arch/arm64/kernel/syscall.c:184 el0_svc+0x2c/0x54 arch/arm64/kernel/entry-common.c:511 el0t_64_sync_handler+0x1a4/0x1b0 arch/arm64/kernel/entry-common.c:527 el0t_64_sync+0x1b4/0x1b8 arch/arm64/kernel/entry.S:574 The buggy address belongs to the object at ffff000023971600 which belongs to the cache kmalloc-256 of size 256 The buggy address is located 144 bytes inside of 256-byte region [ffff000023971600, ffff000023971700) The buggy address belongs to the page: page:00000000d2684e54 refcount:1 mapcount:0 mapping:0000000000000000 index:0xfaff000023971600 pfn:0x63970 head:00000000d2684e54 order:1 compound_mapcount:0 flags: 0x1ffc00000010200(slab|head|node=0|zone=0|lastcpupid=0x7ff|kasantag=0x0) raw: 01ffc00000010200 0000000000000000 0000000100000001 f5ff000002801300 raw: faff000023971600 000000008010000f 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff000023971400: f2 f2 f2 f2 f2 f2 f2 f2 f2 f2 fe fe fe fe fe fe ffff000023971500: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe >ffff000023971600: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe ^ ffff000023971700: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe ffff000023971800: f5 f5 f5 f5 f5 f5 f5 f5 f5 fe fe fe fe fe fe fe ==================================================================