0x000000000fff-0x0000000013fe : "" FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 1 CPU: 0 UID: 0 PID: 5336 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 fail_dump lib/fault-inject.c:73 [inline] should_fail_ex+0x412/0x560 lib/fault-inject.c:174 should_failslab+0xa8/0x100 mm/failslab.c:46 slab_pre_alloc_hook mm/slub.c:4522 [inline] slab_alloc_node mm/slub.c:4875 [inline] __kmalloc_cache_noprof+0x88/0x660 mm/slub.c:5410 kmalloc_noprof include/linux/slab.h:950 [inline] kzalloc_noprof include/linux/slab.h:1188 [inline] device_private_init drivers/base/core.c:3536 [inline] device_add+0xbe/0xbb0 drivers/base/core.c:3587 add_mtd_device+0xd2c/0x1750 drivers/mtd/mtdcore.c:801 mtd_add_partition+0x316/0x510 drivers/mtd/mtdpart.c:280 mtdchar_blkpg_ioctl+0x28a/0x2c0 drivers/mtd/mtdchar.c:562 mtdchar_ioctl+0x14f7/0x1bc0 drivers/mtd/mtdchar.c:1218 mtdchar_unlocked_ioctl+0xae/0xd0 drivers/mtd/mtdchar.c:1241 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7efcf279cdd9 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:00007efcf35d2fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007efcf2a15fa0 RCX: 00007efcf279cdd9 RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004 RBP: 00007efcf35d3050 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007efcf2a16038 R14: 00007efcf2a15fa0 R15: 00007ffcce132cc8 ------------[ cut here ]------------ !list_empty(&mtd->part.node) WARNING: drivers/mtd/mtdpart.c:38 at release_mtd_partition+0x78/0x80 drivers/mtd/mtdpart.c:38, CPU#0: syz.0.0/5336 Modules linked in: CPU: 0 UID: 0 PID: 5336 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:release_mtd_partition+0x78/0x80 drivers/mtd/mtdpart.c:38 Code: e8 03 42 80 3c 38 00 74 05 e8 54 4d cc fb 48 8b 7b 38 e8 db 95 c0 fb 48 89 df 5b 41 5e 41 5f e9 ce 95 c0 fb e8 f9 83 5f fb 90 <0f> 0b 90 eb c8 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000e2d74b0 EFLAGS: 00010293 RAX: ffffffff86665cf7 RBX: ffff888000ac4000 RCX: ffff8880367d4a00 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888000ac4000 RBP: 0000000000000001 R08: ffff88803242b56f R09: 1ffff110064856ad R10: dffffc0000000000 R11: ffffed10064856ae R12: 1ffffffff18a63cc R13: dffffc0000000000 R14: ffff888000ac46a8 R15: dffffc0000000000 FS: 00007efcf35d36c0(0000) GS:ffff88808c808000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5eeaad9bf8 CR3: 0000000044f44000 CR4: 0000000000352ef0 Call Trace: mtd_release+0x8f/0xd0 drivers/mtd/mtdcore.c:102 device_release+0xc4/0x1f0 drivers/base/core.c:-1 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x228/0x560 lib/kobject.c:737 add_mtd_device+0xd9c/0x1750 drivers/mtd/mtdcore.c:803 mtd_add_partition+0x316/0x510 drivers/mtd/mtdpart.c:280 mtdchar_blkpg_ioctl+0x28a/0x2c0 drivers/mtd/mtdchar.c:562 mtdchar_ioctl+0x14f7/0x1bc0 drivers/mtd/mtdchar.c:1218 mtdchar_unlocked_ioctl+0xae/0xd0 drivers/mtd/mtdchar.c:1241 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7efcf279cdd9 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:00007efcf35d2fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007efcf2a15fa0 RCX: 00007efcf279cdd9 RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004 RBP: 00007efcf35d3050 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007efcf2a16038 R14: 00007efcf2a15fa0 R15: 00007ffcce132cc8