FAULT_INJECTION: forcing a failure. name fail_usercopy, interval 1, probability 0, space 0, times 1 CPU: 0 PID: 13611 Comm: syz-executor.7 Not tainted 6.0.0-rc1-next-20220818 #1 BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:1521 in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 13611, name: syz-executor.7 preempt_count: 0, expected: 0 RCU nest depth: 0, expected: 0 no locks held by syz-executor.7/13611. irq event stamp: 506 hardirqs last enabled at (505): [<ffffffff812bd8c8>] __up_console_sem+0x78/0x80 hardirqs last disabled at (506): [<ffffffff84123196>] dump_stack_lvl+0x2e/0xb3 softirqs last enabled at (500): [<ffffffff8116ba5b>] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (489): [<ffffffff8116ba5b>] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 13611 Comm: syz-executor.7 Not tainted 6.0.0-rc1-next-20220818 #1 syz-executor.1: attempt to access beyond end of device loop1: rw=2049, sector=40, nr_sectors = 4 limit=40 Buffer I/O error on dev loop1, logical block 10, lost async page write syz-executor.7[13611] cmdline: /syz-executor.7 exec Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0x8b/0xb3 __might_resched.cold+0x222/0x26b down_read_killable+0x75/0x490 __access_remote_vm+0xac/0x6f0 loop0: detected capacity change from 0 to 40 get_mm_cmdline.part.0+0x214/0x600 get_task_cmdline_kernel+0x1e9/0x230 dump_stack_print_cmdline.part.0+0x82/0x150 dump_stack_print_info+0x185/0x190 dump_stack_lvl+0x7f/0xb3 should_fail.cold+0x5/0xa _copy_from_user+0x2a/0x170 __do_sys_memfd_create+0x103/0x4e0 loop4: detected capacity change from 0 to 40 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fd589a19b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd586f8ef48 EFLAGS: 00000246 ORIG_RAX: 000000000000013f RAX: ffffffffffffffda RBX: 0000000020000040 RCX: 00007fd589a19b19 RDX: 0000000000020000 RSI: 0000000000000000 RDI: 00007fd589a730fb RBP: 0000000000000002 R08: 0000000000010000 R09: ffffffffffffffff R10: 0000000000000002 R11: 0000000000000246 R12: 0000000008100000 R13: 00000000200000c0 R14: 0000000000020000 R15: 0000000020000040 </TASK> syz-executor.5: attempt to access beyond end of device loop5: rw=2049, sector=40, nr_sectors = 4 limit=40 Buffer I/O error on dev loop5, logical block 10, lost async page write syz-executor.7[13611] cmdline: /syz-executor.7 exec Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0x8b/0xb3 should_fail.cold+0x5/0xa _copy_from_user+0x2a/0x170 __do_sys_memfd_create+0x103/0x4e0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fd589a19b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd586f8ef48 EFLAGS: 00000246 ORIG_RAX: 000000000000013f RAX: ffffffffffffffda RBX: 0000000020000040 RCX: 00007fd589a19b19 RDX: 0000000000020000 RSI: 0000000000000000 RDI: 00007fd589a730fb RBP: 0000000000000002 R08: 0000000000010000 R09: ffffffffffffffff R10: 0000000000000002 R11: 0000000000000246 R12: 0000000008100000 R13: 00000000200000c0 R14: 0000000000020000 R15: 0000000020000040 </TASK> loop3: detected capacity change from 0 to 40 loop6: detected capacity change from 0 to 40 loop2: detected capacity change from 0 to 40 syz-executor.0: attempt to access beyond end of device loop0: rw=2049, sector=40, nr_sectors = 4 limit=40 Buffer I/O error on dev loop0, logical block 10, lost async page write syz-executor.6: attempt to access beyond end of device loop6: rw=2049, sector=40, nr_sectors = 4 limit=40 Buffer I/O error on dev loop6, logical block 10, lost async page write loop1: detected capacity change from 0 to 40 loop3: detected capacity change from 0 to 40 syz-executor.3: attempt to access beyond end of device loop3: rw=2049, sector=40, nr_sectors = 4 limit=40 Buffer I/O error on dev loop3, logical block 10, lost async page write