loop3: detected capacity change from 0 to 256
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 1
CPU: 0 PID: 5903 Comm: syz-executor.4 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: 5903, name: syz-executor.4
preempt_count: 0, expected: 0
RCU nest depth: 0, expected: 0
no locks held by syz-executor.4/5903.
irq event stamp: 576
hardirqs last  enabled at (575): [<ffffffff812bd8c8>] __up_console_sem+0x78/0x80
hardirqs last disabled at (576): [<ffffffff84123196>] dump_stack_lvl+0x2e/0xb3
softirqs last  enabled at (562): [<ffffffff8116ba5b>] __irq_exit_rcu+0x11b/0x180
softirqs last disabled at (555): [<ffffffff8116ba5b>] __irq_exit_rcu+0x11b/0x180
CPU: 0 PID: 5903 Comm: syz-executor.4 Not tainted 6.0.0-rc1-next-20220818 #1
syz-executor.4[5903] cmdline: /syz-executor.4 exec
loop6: detected capacity change from 0 to 256
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
loop2: detected capacity change from 0 to 256
Call Trace:
 <TASK>
 dump_stack_lvl+0x8b/0xb3
 __might_resched.cold+0x222/0x26b
 down_read_killable+0x75/0x490
 __access_remote_vm+0xac/0x6f0
 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
FAT-fs (loop2): invalid media value (0x00)
 dump_stack_lvl+0x7f/0xb3
FAT-fs (loop2): Can't find a valid FAT filesystem
 should_fail.cold+0x5/0xa
FAT-fs (loop6): invalid media value (0x00)
 _copy_from_user+0x2a/0x170
FAT-fs (loop6): Can't find a valid FAT filesystem
 copy_msghdr_from_user+0x89/0x150
 ___sys_recvmsg+0xbc/0x190
 do_recvmmsg+0x25d/0x6e0
 __x64_sys_recvmmsg+0x20f/0x260
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f8da11dfb19
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:00007f8d9e755188 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f8da12f2f60 RCX: 00007f8da11dfb19
RDX: 0000000000000001 RSI: 0000000020007c00 RDI: 0000000000000004
RBP: 00007f8d9e7551d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000040012301 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffeeb1f443f R14: 00007f8d9e755300 R15: 0000000000022000
 </TASK>
FAT-fs (loop3): invalid media value (0x00)
FAT-fs (loop3): Can't find a valid FAT filesystem
loop1: detected capacity change from 0 to 288
syz-executor.4[5903] cmdline: /syz-executor.4 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
 copy_msghdr_from_user+0x89/0x150
 ___sys_recvmsg+0xbc/0x190
 do_recvmmsg+0x25d/0x6e0
 __x64_sys_recvmmsg+0x20f/0x260
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f8da11dfb19
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:00007f8d9e755188 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f8da12f2f60 RCX: 00007f8da11dfb19
RDX: 0000000000000001 RSI: 0000000020007c00 RDI: 0000000000000004
RBP: 00007f8d9e7551d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000040012301 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffeeb1f443f R14: 00007f8d9e755300 R15: 0000000000022000
 </TASK>
loop7: detected capacity change from 0 to 256
FAT-fs (loop7): invalid media value (0x00)
FAT-fs (loop7): Can't find a valid FAT filesystem