BUG: scheduling while atomic: syz-executor.0/30462/0x00000002 Modules linked in: Preemption disabled at: [<8091f5b8>] gsmld_write+0x30/0x90 drivers/tty/n_gsm.c:3410 Kernel panic - not syncing: scheduling while atomic: panic_on_warn set ... CPU: 0 PID: 30462 Comm: syz-executor.0 Not tainted 6.2.0-rc8-syzkaller #0 Hardware name: ARM-Versatile Express Backtrace: [<817aaf48>] (dump_backtrace) from [<817ab03c>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:81d7c8f8 r6:82422a84 r5:60000093 r4:81d8af0c [<817ab024>] (show_stack) from [<817c74d0>] (__dump_stack lib/dump_stack.c:88 [inline]) [<817ab024>] (show_stack) from [<817c74d0>] (dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106) [<817c7488>] (dump_stack_lvl) from [<817c74f4>] (dump_stack+0x18/0x1c lib/dump_stack.c:113) r5:00000000 r4:8264bd14 [<817c74dc>] (dump_stack) from [<817abbe4>] (panic+0x11c/0x360 kernel/panic.c:318) [<817abac8>] (panic) from [<80241600>] (print_tainted+0x0/0xa0 kernel/panic.c:238) r3:8240c488 r2:00000001 r1:81d7f4f0 r0:81d7c8f8 r7:822abfc0 [<8024157c>] (check_panic_on_warn) from [<8027524c>] (__schedule_bug+0x88/0x9c kernel/sched/core.c:5836) [<802751c4>] (__schedule_bug) from [<817ca534>] (schedule_debug kernel/sched/core.c:5865 [inline]) [<802751c4>] (__schedule_bug) from [<817ca534>] (__schedule+0x8fc/0xad8 kernel/sched/core.c:6500) r5:dddd4fc0 r4:00000000 [<817c9c38>] (__schedule) from [<817ca76c>] (schedule+0x5c/0xac kernel/sched/core.c:6682) r10:00000000 r9:00000000 r8:00000000 r7:00000002 r6:82429bc4 r5:8291e780 r4:8291e780 [<817ca710>] (schedule) from [<817d11ac>] (schedule_timeout+0xd0/0x108 kernel/time/timer.c:2143) r5:8291e780 r4:7fffffff [<817d10dc>] (schedule_timeout) from [<817cd4fc>] (___down_common kernel/locking/semaphore.c:225 [inline]) [<817d10dc>] (schedule_timeout) from [<817cd4fc>] (__down_common+0x108/0x2cc kernel/locking/semaphore.c:246) r6:82429bc4 r5:8291e780 r4:7fffffff [<817cd3f4>] (__down_common) from [<817cd6d8>] (__down+0x18/0x1c kernel/locking/semaphore.c:254) r9:84112b40 r8:00000000 r7:a0000013 r6:84daee00 r5:00000000 r4:82429bc4 [<817cd6c0>] (__down) from [<817cd728>] (down+0x4c/0x60 kernel/locking/semaphore.c:63) [<817cd6dc>] (down) from [<802add18>] (console_lock+0x14/0x38 kernel/printk/printk.c:2658) r4:00000000 [<802add04>] (console_lock) from [<80931978>] (do_con_write+0x84/0x2028 drivers/tty/vt/vt.c:2908) [<809318f4>] (do_con_write) from [<8093395c>] (con_write+0x14/0x28 drivers/tty/vt/vt.c:3295) r10:00000000 r9:84112b40 r8:00000000 r7:a0000013 r6:843e9980 r5:84daee00 r4:84daee00 [<80933948>] (con_write) from [<8091f5e4>] (gsmld_write+0x5c/0x90 drivers/tty/n_gsm.c:3413) r5:00000000 r4:84daee00 [<8091f588>] (gsmld_write) from [<80910eb8>] (do_tty_write drivers/tty/tty_io.c:1018 [inline]) [<8091f588>] (gsmld_write) from [<80910eb8>] (file_tty_write.constprop.0+0x13c/0x2bc drivers/tty/tty_io.c:1089) r9:84112b40 r8:eb4f1ef0 r7:00000000 r6:84daee00 r5:00000000 r4:00000000 [<80910d7c>] (file_tty_write.constprop.0) from [<809110e0>] (tty_write+0x14/0x18 drivers/tty/tty_io.c:1110) r10:00004007 r9:8291e780 r8:00000000 r7:eb4f1f68 r6:00000000 r5:84112b40 r4:809110cc [<809110cc>] (tty_write) from [<804b9860>] (call_write_iter include/linux/fs.h:2189 [inline]) [<809110cc>] (tty_write) from [<804b9860>] (new_sync_write fs/read_write.c:491 [inline]) [<809110cc>] (tty_write) from [<804b9860>] (vfs_write+0x2c4/0x3bc fs/read_write.c:584) [<804b959c>] (vfs_write) from [<804b9ac0>] (ksys_write+0x68/0xec fs/read_write.c:637) r10:00000004 r9:8291e780 r8:80200288 r7:00000000 r6:00000000 r5:84112b40 r4:84112b41 [<804b9a58>] (ksys_write) from [<804b9b54>] (__do_sys_write fs/read_write.c:649 [inline]) [<804b9a58>] (ksys_write) from [<804b9b54>] (sys_write+0x10/0x14 fs/read_write.c:646) r7:00000004 r6:0014c2b8 r5:00000000 r4:00000000 [<804b9b44>] (sys_write) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:66) Exception stack(0xeb4f1fa8 to 0xeb4f1ff0) 1fa0: 00000000 00000000 00000003 00000000 00000000 00000000 1fc0: 00000000 00000000 0014c2b8 00000004 7ee363d2 76b0c6d0 7ee36544 76b0c20c 1fe0: 76b0c020 76b0c010 00016fec 0004dfa0 Rebooting in 86400 seconds..